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[3.2] Add C# XML documentation to core C# math types

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Aaron Franke 2020-07-21 20:10:35 -04:00
parent 3ab5183ffa
commit e10a1e078f
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13 changed files with 2605 additions and 230 deletions
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234
modules/mono/glue/GodotSharp/GodotSharp/Core/AABB.cs
View file

@ -14,6 +14,10 @@ using real_t = System.Single;
namespace Godot
{
/// <summary>
/// Axis-Aligned Bounding Box. AABB consists of a position, a size, and
/// several utility functions. It is typically used for fast overlap tests.
/// </summary>
[Serializable]
[StructLayout(LayoutKind.Sequential)]
public struct AABB : IEquatable<AABB>
@ -21,24 +25,55 @@ namespace Godot
private Vector3 _position;
private Vector3 _size;
/// <summary>
/// Beginning corner. Typically has values lower than End.
/// </summary>
/// <value>Directly uses a private field.</value>
public Vector3 Position
{
get { return _position; }
set { _position = value; }
}
/// <summary>
/// Size from Position to End. Typically all components are positive.
/// If the size is negative, you can use <see cref="Abs"/> to fix it.
/// </summary>
/// <value>Directly uses a private field.</value>
public Vector3 Size
{
get { return _size; }
set { _size = value; }
}
/// <summary>
/// Ending corner. This is calculated as <see cref="Position"/> plus
/// <see cref="Size"/>. Setting this value will change the size.
/// </summary>
/// <value>Getting is equivalent to `value = Position + Size`, setting is equivalent to `Size = value - Position`.</value>
public Vector3 End
{
get { return _position + _size; }
set { _size = value - _position; }
}
/// <summary>
/// Returns an AABB with equivalent position and size, modified so that
/// the most-negative corner is the origin and the size is positive.
/// </summary>
/// <returns>The modified AABB.</returns>
public AABB Abs()
{
Vector3 end = End;
Vector3 topLeft = new Vector3(Mathf.Min(_position.x, end.x), Mathf.Min(_position.y, end.y), Mathf.Min(_position.z, end.z));
return new AABB(topLeft, _size.Abs());
}
/// <summary>
/// Returns true if this AABB completely encloses another one.
/// </summary>
/// <param name="with">The other AABB that may be enclosed.</param>
/// <returns>A bool for whether or not this AABB encloses `b`.</returns>
public bool Encloses(AABB with)
{
Vector3 src_min = _position;
@ -54,33 +89,59 @@ namespace Godot
src_max.z > dst_max.z;
}
/// <summary>
/// Returns this AABB expanded to include a given point.
/// </summary>
/// <param name="point">The point to include.</param>
/// <returns>The expanded AABB.</returns>
public AABB Expand(Vector3 point)
{
Vector3 begin = _position;
Vector3 end = _position + _size;
if (point.x < begin.x)
{
begin.x = point.x;
}
if (point.y < begin.y)
{
begin.y = point.y;
}
if (point.z < begin.z)
{
begin.z = point.z;
}
if (point.x > end.x)
{
end.x = point.x;
}
if (point.y > end.y)
{
end.y = point.y;
}
if (point.z > end.z)
{
end.z = point.z;
}
return new AABB(begin, end - begin);
}
/// <summary>
/// Returns the area of the AABB.
/// </summary>
/// <returns>The area.</returns>
public real_t GetArea()
{
return _size.x * _size.y * _size.z;
}
/// <summary>
/// Gets the position of one of the 8 endpoints of the AABB.
/// </summary>
/// <param name="idx">Which endpoint to get.</param>
/// <returns>An endpoint of the AABB.</returns>
public Vector3 GetEndpoint(int idx)
{
switch (idx)
@ -106,6 +167,10 @@ namespace Godot
}
}
/// <summary>
/// Returns the normalized longest axis of the AABB.
/// </summary>
/// <returns>A vector representing the normalized longest axis of the AABB.</returns>
public Vector3 GetLongestAxis()
{
var axis = new Vector3(1f, 0f, 0f);
@ -125,6 +190,10 @@ namespace Godot
return axis;
}
/// <summary>
/// Returns the <see cref="Vector3.Axis"/> index of the longest axis of the AABB.
/// </summary>
/// <returns>A <see cref="Vector3.Axis"/> index for which axis is longest.</returns>
public Vector3.Axis GetLongestAxisIndex()
{
var axis = Vector3.Axis.X;
@ -144,6 +213,10 @@ namespace Godot
return axis;
}
/// <summary>
/// Returns the scalar length of the longest axis of the AABB.
/// </summary>
/// <returns>The scalar length of the longest axis of the AABB.</returns>
public real_t GetLongestAxisSize()
{
real_t max_size = _size.x;
@ -157,6 +230,10 @@ namespace Godot
return max_size;
}
/// <summary>
/// Returns the normalized shortest axis of the AABB.
/// </summary>
/// <returns>A vector representing the normalized shortest axis of the AABB.</returns>
public Vector3 GetShortestAxis()
{
var axis = new Vector3(1f, 0f, 0f);
@ -176,6 +253,10 @@ namespace Godot
return axis;
}
/// <summary>
/// Returns the <see cref="Vector3.Axis"/> index of the shortest axis of the AABB.
/// </summary>
/// <returns>A <see cref="Vector3.Axis"/> index for which axis is shortest.</returns>
public Vector3.Axis GetShortestAxisIndex()
{
var axis = Vector3.Axis.X;
@ -195,6 +276,10 @@ namespace Godot
return axis;
}
/// <summary>
/// Returns the scalar length of the shortest axis of the AABB.
/// </summary>
/// <returns>The scalar length of the shortest axis of the AABB.</returns>
public real_t GetShortestAxisSize()
{
real_t max_size = _size.x;
@ -208,6 +293,12 @@ namespace Godot
return max_size;
}
/// <summary>
/// Returns the support point in a given direction.
/// This is useful for collision detection algorithms.
/// </summary>
/// <param name="dir">The direction to find support for.</param>
/// <returns>A vector representing the support.</returns>
public Vector3 GetSupport(Vector3 dir)
{
Vector3 half_extents = _size * 0.5f;
@ -219,6 +310,11 @@ namespace Godot
dir.z > 0f ? -half_extents.z : half_extents.z);
}
/// <summary>
/// Returns a copy of the AABB grown a given amount of units towards all the sides.
/// </summary>
/// <param name="by">The amount to grow by.</param>
/// <returns>The grown AABB.</returns>
public AABB Grow(real_t by)
{
var res = this;
@ -233,16 +329,29 @@ namespace Godot
return res;
}
/// <summary>
/// Returns true if the AABB is flat or empty, or false otherwise.
/// </summary>
/// <returns>A bool for whether or not the AABB has area.</returns>
public bool HasNoArea()
{
return _size.x <= 0f || _size.y <= 0f || _size.z <= 0f;
}
/// <summary>
/// Returns true if the AABB has no surface (no size), or false otherwise.
/// </summary>
/// <returns>A bool for whether or not the AABB has area.</returns>
public bool HasNoSurface()
{
return _size.x <= 0f && _size.y <= 0f && _size.z <= 0f;
}
/// <summary>
/// Returns true if the AABB contains a point, or false otherwise.
/// </summary>
/// <param name="point">The point to check.</param>
/// <returns>A bool for whether or not the AABB contains `point`.</returns>
public bool HasPoint(Vector3 point)
{
if (point.x < _position.x)
@ -261,6 +370,11 @@ namespace Godot
return true;
}
/// <summary>
/// Returns the intersection of this AABB and `b`.
/// </summary>
/// <param name="with">The other AABB.</param>
/// <returns>The clipped AABB.</returns>
public AABB Intersection(AABB with)
{
Vector3 src_min = _position;
@ -297,24 +411,57 @@ namespace Godot
return new AABB(min, max - min);
}
public bool Intersects(AABB with)
/// <summary>
/// Returns true if the AABB overlaps with `b`
/// (i.e. they have at least one point in common).
///
/// If `includeBorders` is true, they will also be considered overlapping
/// if their borders touch, even without intersection.
/// </summary>
/// <param name="with">The other AABB to check for intersections with.</param>
/// <param name="includeBorders">Whether or not to consider borders.</param>
/// <returns>A bool for whether or not they are intersecting.</returns>
public bool Intersects(AABB with, bool includeBorders = false)
{
if (_position.x >= with._position.x + with._size.x)
return false;
if (_position.x + _size.x <= with._position.x)
return false;
if (_position.y >= with._position.y + with._size.y)
return false;
if (_position.y + _size.y <= with._position.y)
return false;
if (_position.z >= with._position.z + with._size.z)
return false;
if (_position.z + _size.z <= with._position.z)
return false;
if (includeBorders)
{
if (_position.x > with._position.x + with._size.x)
return false;
if (_position.x + _size.x < with._position.x)
return false;
if (_position.y > with._position.y + with._size.y)
return false;
if (_position.y + _size.y < with._position.y)
return false;
if (_position.z > with._position.z + with._size.z)
return false;
if (_position.z + _size.z < with._position.z)
return false;
}
else
{
if (_position.x >= with._position.x + with._size.x)
return false;
if (_position.x + _size.x <= with._position.x)
return false;
if (_position.y >= with._position.y + with._size.y)
return false;
if (_position.y + _size.y <= with._position.y)
return false;
if (_position.z >= with._position.z + with._size.z)
return false;
if (_position.z + _size.z <= with._position.z)
return false;
}
return true;
}
/// <summary>
/// Returns true if the AABB is on both sides of `plane`.
/// </summary>
/// <param name="plane">The plane to check for intersection.</param>
/// <returns>A bool for whether or not the AABB intersects the plane.</returns>
public bool IntersectsPlane(Plane plane)
{
Vector3[] points =
@ -335,14 +482,24 @@ namespace Godot
for (int i = 0; i < 8; i++)
{
if (plane.DistanceTo(points[i]) > 0)
{
over = true;
}
else
{
under = true;
}
}
return under && over;
}
/// <summary>
/// Returns true if the AABB intersects the line segment between `from` and `to`.
/// </summary>
/// <param name="from">The start of the line segment.</param>
/// <param name="to">The end of the line segment.</param>
/// <returns>A bool for whether or not the AABB intersects the line segment.</returns>
public bool IntersectsSegment(Vector3 from, Vector3 to)
{
real_t min = 0f;
@ -359,7 +516,9 @@ namespace Godot
if (segFrom < segTo)
{
if (segFrom > boxEnd || segTo < boxBegin)
{
return false;
}
real_t length = segTo - segFrom;
cmin = segFrom < boxBegin ? (boxBegin - segFrom) / length : 0f;
@ -368,7 +527,9 @@ namespace Godot
else
{
if (segTo > boxEnd || segFrom < boxBegin)
{
return false;
}
real_t length = segTo - segFrom;
cmin = segFrom > boxEnd ? (boxEnd - segFrom) / length : 0f;
@ -381,14 +542,23 @@ namespace Godot
}
if (cmax < max)
{
max = cmax;
}
if (max < min)
{
return false;
}
}
return true;
}
/// <summary>
/// Returns a larger AABB that contains this AABB and `b`.
/// </summary>
/// <param name="with">The other AABB.</param>
/// <returns>The merged AABB.</returns>
public AABB Merge(AABB with)
{
Vector3 beg1 = _position;
@ -411,22 +581,52 @@ namespace Godot
return new AABB(min, max - min);
}
// Constructors
/// <summary>
/// Constructs an AABB from a position and size.
/// </summary>
/// <param name="position">The position.</param>
/// <param name="size">The size, typically positive.</param>
public AABB(Vector3 position, Vector3 size)
{
_position = position;
_size = size;
}
/// <summary>
/// Constructs an AABB from a position, width, height, and depth.
/// </summary>
/// <param name="position">The position.</param>
/// <param name="width">The width, typically positive.</param>
/// <param name="height">The height, typically positive.</param>
/// <param name="depth">The depth, typically positive.</param>
public AABB(Vector3 position, real_t width, real_t height, real_t depth)
{
_position = position;
_size = new Vector3(width, height, depth);
}
/// <summary>
/// Constructs an AABB from x, y, z, and size.
/// </summary>
/// <param name="x">The position's X coordinate.</param>
/// <param name="y">The position's Y coordinate.</param>
/// <param name="z">The position's Z coordinate.</param>
/// <param name="size">The size, typically positive.</param>
public AABB(real_t x, real_t y, real_t z, Vector3 size)
{
_position = new Vector3(x, y, z);
_size = size;
}
/// <summary>
/// Constructs an AABB from x, y, z, width, height, and depth.
/// </summary>
/// <param name="x">The position's X coordinate.</param>
/// <param name="y">The position's Y coordinate.</param>
/// <param name="z">The position's Z coordinate.</param>
/// <param name="width">The width, typically positive.</param>
/// <param name="height">The height, typically positive.</param>
/// <param name="depth">The depth, typically positive.</param>
public AABB(real_t x, real_t y, real_t z, real_t width, real_t height, real_t depth)
{
_position = new Vector3(x, y, z);
@ -458,6 +658,12 @@ namespace Godot
return _position == other._position && _size == other._size;
}
/// <summary>
/// Returns true if this AABB and `other` are approximately equal, by running
/// <see cref="Vector3.IsEqualApprox(Vector3)"/> on each component.
/// </summary>
/// <param name="other">The other AABB to compare.</param>
/// <returns>Whether or not the AABBs are approximately equal.</returns>
public bool IsEqualApprox(AABB other)
{
return _position.IsEqualApprox(other._position) && _size.IsEqualApprox(other._size);

301
modules/mono/glue/GodotSharp/GodotSharp/Core/Basis.cs
View file

@ -8,6 +8,20 @@ using real_t = System.Single;
namespace Godot
{
/// <summary>
/// 3×3 matrix used for 3D rotation and scale.
/// Almost always used as an orthogonal basis for a Transform.
///
/// Contains 3 vector fields X, Y and Z as its columns, which are typically
/// interpreted as the local basis vectors of a 3D transformation. For such use,
/// it is composed of a scaling and a rotation matrix, in that order (M = R.S).
///
/// Can also be accessed as array of 3D vectors. These vectors are normally
/// orthogonal to each other, but are not necessarily normalized (due to scaling).
///
/// For more information, read this documentation article:
/// https://docs.godotengine.org/en/latest/tutorials/math/matrices_and_transforms.html
/// </summary>
[Serializable]
[StructLayout(LayoutKind.Sequential)]
public struct Basis : IEquatable<Basis>
@ -15,9 +29,9 @@ namespace Godot
// NOTE: x, y and z are public-only. Use Column0, Column1 and Column2 internally.
/// <summary>
/// Returns the basis matrix’s x vector.
/// This is equivalent to <see cref="Column0"/>.
/// The basis matrix's X vector (column 0).
/// </summary>
/// <value>Equivalent to <see cref="Column0"/> and array index `[0]`.</value>
public Vector3 x
{
get => Column0;
@ -25,9 +39,9 @@ namespace Godot
}
/// <summary>
/// Returns the basis matrix’s y vector.
/// This is equivalent to <see cref="Column1"/>.
/// The basis matrix's Y vector (column 1).
/// </summary>
/// <value>Equivalent to <see cref="Column1"/> and array index `[1]`.</value>
public Vector3 y
{
get => Column1;
@ -35,19 +49,40 @@ namespace Godot
}
/// <summary>
/// Returns the basis matrix’s z vector.
/// This is equivalent to <see cref="Column2"/>.
/// The basis matrix's Z vector (column 2).
/// </summary>
/// <value>Equivalent to <see cref="Column2"/> and array index `[2]`.</value>
public Vector3 z
{
get => Column2;
set => Column2 = value;
}
/// <summary>
/// Row 0 of the basis matrix. Shows which vectors contribute
/// to the X direction. Rows are not very useful for user code,
/// but are more efficient for some internal calculations.
/// </summary>
public Vector3 Row0;
/// <summary>
/// Row 1 of the basis matrix. Shows which vectors contribute
/// to the Y direction. Rows are not very useful for user code,
/// but are more efficient for some internal calculations.
/// </summary>
public Vector3 Row1;
/// <summary>
/// Row 2 of the basis matrix. Shows which vectors contribute
/// to the Z direction. Rows are not very useful for user code,
/// but are more efficient for some internal calculations.
/// </summary>
public Vector3 Row2;
/// <summary>
/// Column 0 of the basis matrix (the X vector).
/// </summary>
/// <value>Equivalent to <see cref="x"/> and array index `[0]`.</value>
public Vector3 Column0
{
get => new Vector3(Row0.x, Row1.x, Row2.x);
@ -58,6 +93,11 @@ namespace Godot
this.Row2.x = value.z;
}
}
/// <summary>
/// Column 1 of the basis matrix (the Y vector).
/// </summary>
/// <value>Equivalent to <see cref="y"/> and array index `[1]`.</value>
public Vector3 Column1
{
get => new Vector3(Row0.y, Row1.y, Row2.y);
@ -68,6 +108,11 @@ namespace Godot
this.Row2.y = value.z;
}
}
/// <summary>
/// Column 2 of the basis matrix (the Z vector).
/// </summary>
/// <value>Equivalent to <see cref="z"/> and array index `[2]`.</value>
public Vector3 Column2
{
get => new Vector3(Row0.z, Row1.z, Row2.z);
@ -79,6 +124,10 @@ namespace Godot
}
}
/// <summary>
/// The scale of this basis.
/// </summary>
/// <value>Equivalent to the lengths of each column vector, but negative if the determinant is negative.</value>
public Vector3 Scale
{
get
@ -86,11 +135,18 @@ namespace Godot
real_t detSign = Mathf.Sign(Determinant());
return detSign * new Vector3
(
new Vector3(this.Row0[0], this.Row1[0], this.Row2[0]).Length(),
new Vector3(this.Row0[1], this.Row1[1], this.Row2[1]).Length(),
new Vector3(this.Row0[2], this.Row1[2], this.Row2[2]).Length()
Column0.Length(),
Column1.Length(),
Column2.Length()
);
}
set
{
value /= Scale; // Value becomes what's called "delta_scale" in core.
Column0 *= value.x;
Column1 *= value.y;
Column2 *= value.z;
}
}
/// <summary>
@ -157,8 +213,9 @@ namespace Godot
real_t det = orthonormalizedBasis.Determinant();
if (det < 0)
{
// Ensure that the determinant is 1, such that result is a proper rotation matrix which can be represented by Euler angles.
orthonormalizedBasis = orthonormalizedBasis.Scaled(Vector3.NegOne);
// Ensure that the determinant is 1, such that result is a proper
// rotation matrix which can be represented by Euler angles.
orthonormalizedBasis = orthonormalizedBasis.Scaled(-Vector3.One);
}
return orthonormalizedBasis.Quat();
@ -182,6 +239,15 @@ namespace Godot
Row2 = new Vector3(0, 0, diagonal.z);
}
/// <summary>
/// Returns the determinant of the basis matrix. If the basis is
/// uniformly scaled, its determinant is the square of the scale.
///
/// A negative determinant means the basis has a negative scale.
/// A zero determinant means the basis isn't invertible,
/// and is usually considered invalid.
/// </summary>
/// <returns>The determinant of the basis matrix.</returns>
public real_t Determinant()
{
real_t cofac00 = Row1[1] * Row2[2] - Row1[2] * Row2[1];
@ -191,6 +257,16 @@ namespace Godot
return Row0[0] * cofac00 + Row0[1] * cofac10 + Row0[2] * cofac20;
}
/// <summary>
/// Returns the basis's rotation in the form of Euler angles
/// (in the YXZ convention: when *decomposing*, first Z, then X, and Y last).
/// The returned vector contains the rotation angles in
/// the format (X angle, Y angle, Z angle).
///
/// Consider using the <see cref="Basis.Quat()"/> method instead, which
/// returns a <see cref="Godot.Quat"/> quaternion instead of Euler angles.
/// </summary>
/// <returns>A Vector3 representing the basis rotation in Euler angles.</returns>
public Vector3 GetEuler()
{
Basis m = Orthonormalized();
@ -223,6 +299,12 @@ namespace Godot
return euler;
}
/// <summary>
/// Get rows by index. Rows are not very useful for user code,
/// but are more efficient for some internal calculations.
/// </summary>
/// <param name="index">Which row.</param>
/// <returns>One of `Row0`, `Row1`, or `Row2`.</returns>
public Vector3 GetRow(int index)
{
switch (index)
@ -238,6 +320,12 @@ namespace Godot
}
}
/// <summary>
/// Sets rows by index. Rows are not very useful for user code,
/// but are more efficient for some internal calculations.
/// </summary>
/// <param name="index">Which row.</param>
/// <param name="value">The vector to set the row to.</param>
public void SetRow(int index, Vector3 value)
{
switch (index)
@ -256,22 +344,49 @@ namespace Godot
}
}
/// <summary>
/// Deprecated, please use the array operator instead.
/// </summary>
/// <param name="index">Which column.</param>
/// <returns>One of `Column0`, `Column1`, or `Column2`.</returns>
[Obsolete("GetColumn is deprecated. Use the array operator instead.")]
public Vector3 GetColumn(int index)
{
return this[index];
}
/// <summary>
/// Deprecated, please use the array operator instead.
/// </summary>
/// <param name="index">Which column.</param>
/// <param name="value">The vector to set the column to.</param>
[Obsolete("SetColumn is deprecated. Use the array operator instead.")]
public void SetColumn(int index, Vector3 value)
{
this[index] = value;
}
[Obsolete("GetAxis is deprecated. Use GetColumn instead.")]
/// <summary>
/// Deprecated, please use the array operator instead.
/// </summary>
/// <param name="axis">Which column.</param>
/// <returns>One of `Column0`, `Column1`, or `Column2`.</returns>
[Obsolete("GetAxis is deprecated. Use the array operator instead.")]
public Vector3 GetAxis(int axis)
{
return new Vector3(this.Row0[axis], this.Row1[axis], this.Row2[axis]);
}
/// <summary>
/// This function considers a discretization of rotations into
/// 24 points on unit sphere, lying along the vectors (x, y, z) with
/// each component being either -1, 0, or 1, and returns the index
/// of the point best representing the orientation of the object.
/// It is mainly used by the <see cref="GridMap"/> editor.
///
/// For further details, refer to the Godot source code.
/// </summary>
/// <returns>The orthogonal index.</returns>
public int GetOrthogonalIndex()
{
var orth = this;
@ -285,11 +400,17 @@ namespace Godot
real_t v = row[j];
if (v > 0.5f)
{
v = 1.0f;
}
else if (v < -0.5f)
{
v = -1.0f;
}
else
{
v = 0f;
}
row[j] = v;
@ -300,12 +421,18 @@ namespace Godot
for (int i = 0; i < 24; i++)
{
if (orth == _orthoBases[i])
{
return i;
}
}
return 0;
}
/// <summary>
/// Returns the inverse of the matrix.
/// </summary>
/// <returns>The inverse matrix.</returns>
public Basis Inverse()
{
real_t cofac00 = Row1[1] * Row2[2] - Row1[2] * Row2[1];
@ -315,7 +442,9 @@ namespace Godot
real_t det = Row0[0] * cofac00 + Row0[1] * cofac10 + Row0[2] * cofac20;
if (det == 0)
{
throw new InvalidOperationException("Matrix determinant is zero and cannot be inverted.");
}
real_t detInv = 1.0f / det;
@ -334,11 +463,17 @@ namespace Godot
);
}
/// <summary>
/// Returns the orthonormalized version of the basis matrix (useful to
/// call occasionally to avoid rounding errors for orthogonal matrices).
/// This performs a Gram-Schmidt orthonormalization on the basis of the matrix.
/// </summary>
/// <returns>An orthonormalized basis matrix.</returns>
public Basis Orthonormalized()
{
Vector3 column0 = GetColumn(0);
Vector3 column1 = GetColumn(1);
Vector3 column2 = GetColumn(2);
Vector3 column0 = this[0];
Vector3 column1 = this[1];
Vector3 column2 = this[2];
column0.Normalize();
column1 = column1 - column0 * column0.Dot(column1);
@ -349,48 +484,86 @@ namespace Godot
return new Basis(column0, column1, column2);
}
/// <summary>
/// Introduce an additional rotation around the given `axis`
/// by `phi` (in radians). The axis must be a normalized vector.
/// </summary>
/// <param name="axis">The axis to rotate around. Must be normalized.</param>
/// <param name="phi">The angle to rotate, in radians.</param>
/// <returns>The rotated basis matrix.</returns>
public Basis Rotated(Vector3 axis, real_t phi)
{
return new Basis(axis, phi) * this;
}
/// <summary>
/// Introduce an additional scaling specified by the given 3D scaling factor.
/// </summary>
/// <param name="scale">The scale to introduce.</param>
/// <returns>The scaled basis matrix.</returns>
public Basis Scaled(Vector3 scale)
{
var b = this;
Basis b = this;
b.Row0 *= scale.x;
b.Row1 *= scale.y;
b.Row2 *= scale.z;
return b;
}
public Basis Slerp(Basis target, real_t t)
/// <summary>
/// Assuming that the matrix is a proper rotation matrix, slerp performs
/// a spherical-linear interpolation with another rotation matrix.
/// </summary>
/// <param name="target">The destination basis for interpolation.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting basis matrix of the interpolation.</returns>
public Basis Slerp(Basis target, real_t weight)
{
var from = new Quat(this);
var to = new Quat(target);
Quat from = new Quat(this);
Quat to = new Quat(target);
var b = new Basis(from.Slerp(to, t));
b.Row0 *= Mathf.Lerp(Row0.Length(), target.Row0.Length(), t);
b.Row1 *= Mathf.Lerp(Row1.Length(), target.Row1.Length(), t);
b.Row2 *= Mathf.Lerp(Row2.Length(), target.Row2.Length(), t);
Basis b = new Basis(from.Slerp(to, weight));
b.Row0 *= Mathf.Lerp(Row0.Length(), target.Row0.Length(), weight);
b.Row1 *= Mathf.Lerp(Row1.Length(), target.Row1.Length(), weight);
b.Row2 *= Mathf.Lerp(Row2.Length(), target.Row2.Length(), weight);
return b;
}
/// <summary>
/// Transposed dot product with the X axis of the matrix.
/// </summary>
/// <param name="with">A vector to calculate the dot product with.</param>
/// <returns>The resulting dot product.</returns>
public real_t Tdotx(Vector3 with)
{
return this.Row0[0] * with[0] + this.Row1[0] * with[1] + this.Row2[0] * with[2];
}
/// <summary>
/// Transposed dot product with the Y axis of the matrix.
/// </summary>
/// <param name="with">A vector to calculate the dot product with.</param>
/// <returns>The resulting dot product.</returns>
public real_t Tdoty(Vector3 with)
{
return this.Row0[1] * with[0] + this.Row1[1] * with[1] + this.Row2[1] * with[2];
}
/// <summary>
/// Transposed dot product with the Z axis of the matrix.
/// </summary>
/// <param name="with">A vector to calculate the dot product with.</param>
/// <returns>The resulting dot product.</returns>
public real_t Tdotz(Vector3 with)
{
return this.Row0[2] * with[0] + this.Row1[2] * with[1] + this.Row2[2] * with[2];
}
/// <summary>
/// Returns the transposed version of the basis matrix.
/// </summary>
/// <returns>The transposed basis matrix.</returns>
public Basis Transposed()
{
var tr = this;
@ -410,6 +583,11 @@ namespace Godot
return tr;
}
/// <summary>
/// Returns a vector transformed (multiplied) by the basis matrix.
/// </summary>
/// <param name="v">A vector to transform.</param>
/// <returns>The transfomed vector.</returns>
public Vector3 Xform(Vector3 v)
{
return new Vector3
@ -420,6 +598,14 @@ namespace Godot
);
}
/// <summary>
/// Returns a vector transformed (multiplied) by the transposed basis matrix.
///
/// Note: This results in a multiplication by the inverse of the
/// basis matrix only if it represents a rotation-reflection.
/// </summary>
/// <param name="v">A vector to inversely transform.</param>
/// <returns>The inversely transfomed vector.</returns>
public Vector3 XformInv(Vector3 v)
{
return new Vector3
@ -430,6 +616,12 @@ namespace Godot
);
}
/// <summary>
/// Returns the basis's rotation in the form of a quaternion.
/// See <see cref="GetEuler()"/> if you need Euler angles, but keep in
/// mind that quaternions should generally be preferred to Euler angles.
/// </summary>
/// <returns>A <see cref="Godot.Quat"/> representing the basis's rotation.</returns>
public Quat Quat()
{
real_t trace = Row0[0] + Row1[1] + Row2[2];
@ -514,11 +706,33 @@ namespace Godot
private static readonly Basis _flipY = new Basis(1, 0, 0, 0, -1, 0, 0, 0, 1);
private static readonly Basis _flipZ = new Basis(1, 0, 0, 0, 1, 0, 0, 0, -1);
/// <summary>
/// The identity basis, with no rotation or scaling applied.
/// This is used as a replacement for `Basis()` in GDScript.
/// Do not use `new Basis()` with no arguments in C#, because it sets all values to zero.
/// </summary>
/// <value>Equivalent to `new Basis(Vector3.Right, Vector3.Up, Vector3.Back)`.</value>
public static Basis Identity { get { return _identity; } }
/// <summary>
/// The basis that will flip something along the X axis when used in a transformation.
/// </summary>
/// <value>Equivalent to `new Basis(Vector3.Left, Vector3.Up, Vector3.Back)`.</value>
public static Basis FlipX { get { return _flipX; } }
/// <summary>
/// The basis that will flip something along the Y axis when used in a transformation.
/// </summary>
/// <value>Equivalent to `new Basis(Vector3.Right, Vector3.Down, Vector3.Back)`.</value>
public static Basis FlipY { get { return _flipY; } }
/// <summary>
/// The basis that will flip something along the Z axis when used in a transformation.
/// </summary>
/// <value>Equivalent to `new Basis(Vector3.Right, Vector3.Up, Vector3.Forward)`.</value>
public static Basis FlipZ { get { return _flipZ; } }
/// <summary>
/// Constructs a pure rotation basis matrix from the given quaternion.
/// </summary>
/// <param name="quat">The quaternion to create the basis from.</param>
public Basis(Quat quat)
{
real_t s = 2.0f / quat.LengthSquared;
@ -541,26 +755,41 @@ namespace Godot
Row2 = new Vector3(xz - wy, yz + wx, 1.0f - (xx + yy));
}
public Basis(Vector3 euler)
/// <summary>
/// Constructs a pure rotation basis matrix from the given Euler angles
/// (in the YXZ convention: when *composing*, first Y, then X, and Z last),
/// given in the vector format as (X angle, Y angle, Z angle).
///
/// Consider using the <see cref="Basis(Quat)"/> constructor instead, which
/// uses a <see cref="Godot.Quat"/> quaternion instead of Euler angles.
/// </summary>
/// <param name="eulerYXZ">The Euler angles to create the basis from.</param>
public Basis(Vector3 eulerYXZ)
{
real_t c;
real_t s;
c = Mathf.Cos(euler.x);
s = Mathf.Sin(euler.x);
c = Mathf.Cos(eulerYXZ.x);
s = Mathf.Sin(eulerYXZ.x);
var xmat = new Basis(1, 0, 0, 0, c, -s, 0, s, c);
c = Mathf.Cos(euler.y);
s = Mathf.Sin(euler.y);
c = Mathf.Cos(eulerYXZ.y);
s = Mathf.Sin(eulerYXZ.y);
var ymat = new Basis(c, 0, s, 0, 1, 0, -s, 0, c);
c = Mathf.Cos(euler.z);
s = Mathf.Sin(euler.z);
c = Mathf.Cos(eulerYXZ.z);
s = Mathf.Sin(eulerYXZ.z);
var zmat = new Basis(c, -s, 0, s, c, 0, 0, 0, 1);
this = ymat * xmat * zmat;
}
/// <summary>
/// Constructs a pure rotation basis matrix, rotated around the given `axis`
/// by `phi` (in radians). The axis must be a normalized vector.
/// </summary>
/// <param name="axis">The axis to rotate around. Must be normalized.</param>
/// <param name="phi">The angle to rotate, in radians.</param>
public Basis(Vector3 axis, real_t phi)
{
Vector3 axisSq = new Vector3(axis.x * axis.x, axis.y * axis.y, axis.z * axis.z);
@ -588,6 +817,12 @@ namespace Godot
Row2.y = xyzt + zyxs;
}
/// <summary>
/// Constructs a basis matrix from 3 axis vectors (matrix columns).
/// </summary>
/// <param name="column0">The X vector, or Column0.</param>
/// <param name="column1">The Y vector, or Column1.</param>
/// <param name="column2">The Z vector, or Column2.</param>
public Basis(Vector3 column0, Vector3 column1, Vector3 column2)
{
Row0 = new Vector3(column0.x, column1.x, column2.x);
@ -643,6 +878,12 @@ namespace Godot
return Row0.Equals(other.Row0) && Row1.Equals(other.Row1) && Row2.Equals(other.Row2);
}
/// <summary>
/// Returns true if this basis and `other` are approximately equal, by running
/// <see cref="Vector3.IsEqualApprox(Vector3)"/> on each component.
/// </summary>
/// <param name="other">The other basis to compare.</param>
/// <returns>Whether or not the matrices are approximately equal.</returns>
public bool IsEqualApprox(Basis other)
{
return Row0.IsEqualApprox(other.Row0) && Row1.IsEqualApprox(other.Row1) && Row2.IsEqualApprox(other.Row2);

276
modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs
View file

@ -3,15 +3,44 @@ using System.Runtime.InteropServices;
namespace Godot
{
/// <summary>
/// A color represented by red, green, blue, and alpha (RGBA) components.
/// The alpha component is often used for transparency.
/// Values are in floating-point and usually range from 0 to 1.
/// Some properties (such as CanvasItem.modulate) may accept values
/// greater than 1 (overbright or HDR colors).
///
/// If you want to supply values in a range of 0 to 255, you should use
/// <see cref="Color8"/> and the `r8`/`g8`/`b8`/`a8` properties.
/// </summary>
[Serializable]
[StructLayout(LayoutKind.Sequential)]
public struct Color : IEquatable<Color>
{
/// <summary>
/// The color's red component, typically on the range of 0 to 1.
/// </summary>
public float r;
/// <summary>
/// The color's green component, typically on the range of 0 to 1.
/// </summary>
public float g;
/// <summary>
/// The color's blue component, typically on the range of 0 to 1.
/// </summary>
public float b;
/// <summary>
/// The color's alpha (transparency) component, typically on the range of 0 to 1.
/// </summary>
public float a;
/// <summary>
/// Wrapper for <see cref="r"/> that uses the range 0 to 255 instead of 0 to 1.
/// </summary>
/// <value>Getting is equivalent to multiplying by 255 and rounding. Setting is equivalent to dividing by 255.</value>
public int r8
{
get
@ -24,6 +53,10 @@ namespace Godot
}
}
/// <summary>
/// Wrapper for <see cref="g"/> that uses the range 0 to 255 instead of 0 to 1.
/// </summary>
/// <value>Getting is equivalent to multiplying by 255 and rounding. Setting is equivalent to dividing by 255.</value>
public int g8
{
get
@ -36,6 +69,10 @@ namespace Godot
}
}
/// <summary>
/// Wrapper for <see cref="b"/> that uses the range 0 to 255 instead of 0 to 1.
/// </summary>
/// <value>Getting is equivalent to multiplying by 255 and rounding. Setting is equivalent to dividing by 255.</value>
public int b8
{
get
@ -48,6 +85,10 @@ namespace Godot
}
}
/// <summary>
/// Wrapper for <see cref="a"/> that uses the range 0 to 255 instead of 0 to 1.
/// </summary>
/// <value>Getting is equivalent to multiplying by 255 and rounding. Setting is equivalent to dividing by 255.</value>
public int a8
{
get
@ -60,6 +101,10 @@ namespace Godot
}
}
/// <summary>
/// The HSV hue of this color, on the range 0 to 1.
/// </summary>
/// <value>Getting is a long process, refer to the source code for details. Setting uses <see cref="FromHsv"/>.</value>
public float h
{
get
@ -70,21 +115,31 @@ namespace Godot
float delta = max - min;
if (delta == 0)
{
return 0;
}
float h;
if (r == max)
{
h = (g - b) / delta; // Between yellow & magenta
}
else if (g == max)
{
h = 2 + (b - r) / delta; // Between cyan & yellow
}
else
{
h = 4 + (r - g) / delta; // Between magenta & cyan
}
h /= 6.0f;
if (h < 0)
{
h += 1.0f;
}
return h;
}
@ -94,6 +149,10 @@ namespace Godot
}
}
/// <summary>
/// The HSV saturation of this color, on the range 0 to 1.
/// </summary>
/// <value>Getting is equivalent to the ratio between the min and max RGB value. Setting uses <see cref="FromHsv"/>.</value>
public float s
{
get
@ -103,7 +162,7 @@ namespace Godot
float delta = max - min;
return max != 0 ? delta / max : 0;
return max == 0 ? 0 : delta / max;
}
set
{
@ -111,6 +170,10 @@ namespace Godot
}
}
/// <summary>
/// The HSV value (brightness) of this color, on the range 0 to 1.
/// </summary>
/// <value>Getting is equivalent to using `Max()` on the RGB components. Setting uses <see cref="FromHsv"/>.</value>
public float v
{
get
@ -123,6 +186,14 @@ namespace Godot
}
}
/// <summary>
/// Returns a color according to the standardized name, with the
/// specified alpha value. Supported color names are the same as
/// the constants defined in <see cref="Colors"/>.
/// </summary>
/// <param name="name">The name of the color.</param>
/// <param name="alpha">The alpha (transparency) component represented on the range of 0 to 1. Default: 1.</param>
/// <returns>The constructed color.</returns>
public static Color ColorN(string name, float alpha = 1f)
{
name = name.Replace(" ", String.Empty);
@ -142,6 +213,10 @@ namespace Godot
return color;
}
/// <summary>
/// Access color components using their index.
/// </summary>
/// <value>`[0]` is equivalent to `.r`, `[1]` is equivalent to `.g`, `[2]` is equivalent to `.b`, `[3]` is equivalent to `.a`.</value>
public float this[int index]
{
get
@ -182,6 +257,13 @@ namespace Godot
}
}
/// <summary>
/// Converts a color to HSV values. This is equivalent to using each of
/// the `h`/`s`/`v` properties, but much more efficient.
/// </summary>
/// <param name="hue">Output parameter for the HSV hue.</param>
/// <param name="saturation">Output parameter for the HSV saturation.</param>
/// <param name="value">Output parameter for the HSV value.</param>
public void ToHsv(out float hue, out float saturation, out float value)
{
float max = (float)Mathf.Max(r, Mathf.Max(g, b));
@ -212,6 +294,16 @@ namespace Godot
value = max;
}
/// <summary>
/// Constructs a color from an HSV profile, with values on the
/// range of 0 to 1. This is equivalent to using each of
/// the `h`/`s`/`v` properties, but much more efficient.
/// </summary>
/// <param name="hue">The HSV hue, typically on the range of 0 to 1.</param>
/// <param name="saturation">The HSV saturation, typically on the range of 0 to 1.</param>
/// <param name="value">The HSV value (brightness), typically on the range of 0 to 1.</param>
/// <param name="alpha">The alpha (transparency) value, typically on the range of 0 to 1.</param>
/// <returns>The constructed color.</returns>
public static Color FromHsv(float hue, float saturation, float value, float alpha = 1.0f)
{
if (saturation == 0)
@ -249,6 +341,13 @@ namespace Godot
}
}
/// <summary>
/// Returns a new color resulting from blending this color over another.
/// If the color is opaque, the result is also opaque.
/// The second color may have a range of alpha values.
/// </summary>
/// <param name="over">The color to blend over.</param>
/// <returns>This color blended over `over`.</returns>
public Color Blend(Color over)
{
Color res;
@ -268,6 +367,10 @@ namespace Godot
return res;
}
/// <summary>
/// Returns the most contrasting color.
/// </summary>
/// <returns>The most contrasting color</returns>
public Color Contrasted()
{
return new Color(
@ -278,6 +381,12 @@ namespace Godot
);
}
/// <summary>
/// Returns a new color resulting from making this color darker
/// by the specified ratio (on the range of 0 to 1).
/// </summary>
/// <param name="amount">The ratio to darken by.</param>
/// <returns>The darkened color.</returns>
public Color Darkened(float amount)
{
Color res = this;
@ -287,6 +396,10 @@ namespace Godot
return res;
}
/// <summary>
/// Returns the inverted color: `(1 - r, 1 - g, 1 - b, a)`.
/// </summary>
/// <returns>The inverted color.</returns>
public Color Inverted()
{
return new Color(
@ -297,6 +410,12 @@ namespace Godot
);
}
/// <summary>
/// Returns a new color resulting from making this color lighter
/// by the specified ratio (on the range of 0 to 1).
/// </summary>
/// <param name="amount">The ratio to lighten by.</param>
/// <returns>The darkened color.</returns>
public Color Lightened(float amount)
{
Color res = this;
@ -306,18 +425,48 @@ namespace Godot
return res;
}
public Color LinearInterpolate(Color c, float t)
/// <summary>
/// Returns the result of the linear interpolation between
/// this color and `to` by amount `weight`.
/// </summary>
/// <param name="to">The destination color for interpolation.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting color of the interpolation.</returns>
public Color LinearInterpolate(Color to, float weight)
{
var res = this;
res.r += t * (c.r - r);
res.g += t * (c.g - g);
res.b += t * (c.b - b);
res.a += t * (c.a - a);
return res;
return new Color
(
Mathf.Lerp(r, to.r, weight),
Mathf.Lerp(g, to.g, weight),
Mathf.Lerp(b, to.b, weight),
Mathf.Lerp(a, to.a, weight)
);
}
/// <summary>
/// Returns the result of the linear interpolation between
/// this color and `to` by color amount `weight`.
/// </summary>
/// <param name="to">The destination color for interpolation.</param>
/// <param name="weight">A color with components on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting color of the interpolation.</returns>
public Color LinearInterpolate(Color to, Color weight)
{
return new Color
(
Mathf.Lerp(r, to.r, weight.r),
Mathf.Lerp(g, to.g, weight.g),
Mathf.Lerp(b, to.b, weight.b),
Mathf.Lerp(a, to.a, weight.a)
);
}
/// <summary>
/// Returns the color's 32-bit integer in ABGR format
/// (each byte represents a component of the ABGR profile).
/// ABGR is the reversed version of the default format.
/// </summary>
/// <returns>An int representing this color in ABGR32 format.</returns>
public int ToAbgr32()
{
int c = (byte)Math.Round(a * 255);
@ -331,6 +480,12 @@ namespace Godot
return c;
}
/// <summary>
/// Returns the color's 64-bit integer in ABGR format
/// (each byte represents a component of the ABGR profile).
/// ABGR is the reversed version of the default format.
/// </summary>
/// <returns>An int representing this color in ABGR64 format.</returns>
public long ToAbgr64()
{
long c = (ushort)Math.Round(a * 65535);
@ -344,6 +499,12 @@ namespace Godot
return c;
}
/// <summary>
/// Returns the color's 32-bit integer in ARGB format
/// (each byte represents a component of the ARGB profile).
/// ARGB is more compatible with DirectX, but not used much in Godot.
/// </summary>
/// <returns>An int representing this color in ARGB32 format.</returns>
public int ToArgb32()
{
int c = (byte)Math.Round(a * 255);
@ -357,6 +518,12 @@ namespace Godot
return c;
}
/// <summary>
/// Returns the color's 64-bit integer in ARGB format
/// (each word represents a component of the ARGB profile).
/// ARGB is more compatible with DirectX, but not used much in Godot.
/// </summary>
/// <returns>A long representing this color in ARGB64 format.</returns>
public long ToArgb64()
{
long c = (ushort)Math.Round(a * 65535);
@ -370,6 +537,12 @@ namespace Godot
return c;
}
/// <summary>
/// Returns the color's 32-bit integer in RGBA format
/// (each byte represents a component of the RGBA profile).
/// RGBA is Godot's default and recommended format.
/// </summary>
/// <returns>An int representing this color in RGBA32 format.</returns>
public int ToRgba32()
{
int c = (byte)Math.Round(r * 255);
@ -383,6 +556,12 @@ namespace Godot
return c;
}
/// <summary>
/// Returns the color's 64-bit integer in RGBA format
/// (each word represents a component of the RGBA profile).
/// RGBA is Godot's default and recommended format.
/// </summary>
/// <returns>A long representing this color in RGBA64 format.</returns>
public long ToRgba64()
{
long c = (ushort)Math.Round(r * 65535);
@ -396,6 +575,11 @@ namespace Godot
return c;
}
/// <summary>
/// Returns the color's HTML hexadecimal color string in RGBA format.
/// </summary>
/// <param name="includeAlpha">Whether or not to include alpha. If false, the color is RGB instead of RGBA.</param>
/// <returns>A string for the HTML hexadecimal representation of this color.</returns>
public string ToHtml(bool includeAlpha = true)
{
var txt = string.Empty;
@ -410,7 +594,13 @@ namespace Godot
return txt;
}
// Constructors
/// <summary>
/// Constructs a color from RGBA values on the range of 0 to 1.
/// </summary>
/// <param name="r">The color's red component, typically on the range of 0 to 1.</param>
/// <param name="g">The color's green component, typically on the range of 0 to 1.</param>
/// <param name="b">The color's blue component, typically on the range of 0 to 1.</param>
/// <param name="a">The color's alpha (transparency) value, typically on the range of 0 to 1. Default: 1.</param>
public Color(float r, float g, float b, float a = 1.0f)
{
this.r = r;
@ -419,6 +609,24 @@ namespace Godot
this.a = a;
}
/// <summary>
/// Constructs a color from an existing color and an alpha value.
/// </summary>
/// <param name="c">The color to construct from. Only its RGB values are used.</param>
/// <param name="a">The color's alpha (transparency) value, typically on the range of 0 to 1. Default: 1.</param>
public Color(Color c, float a = 1.0f)
{
r = c.r;
g = c.g;
b = c.b;
this.a = a;
}
/// <summary>
/// Constructs a color from a 32-bit integer
/// (each byte represents a component of the RGBA profile).
/// </summary>
/// <param name="rgba">The int representing the color.</param>
public Color(int rgba)
{
a = (rgba & 0xFF) / 255.0f;
@ -430,6 +638,11 @@ namespace Godot
r = (rgba & 0xFF) / 255.0f;
}
/// <summary>
/// Constructs a color from a 64-bit integer
/// (each word represents a component of the RGBA profile).
/// </summary>
/// <param name="rgba">The long representing the color.</param>
public Color(long rgba)
{
a = (rgba & 0xFFFF) / 65535.0f;
@ -470,9 +683,13 @@ namespace Godot
}
if (i == 0)
{
ig += v * 16;
}
else
{
ig += v;
}
}
return ig;
@ -490,9 +707,13 @@ namespace Godot
int lv = v & 0xF;
if (lv < 10)
{
c = (char)('0' + lv);
}
else
{
c = (char)('a' + lv - 10);
}
v >>= 4;
ret = c + ret;
@ -504,10 +725,14 @@ namespace Godot
internal static bool HtmlIsValid(string color)
{
if (color.Length == 0)
{
return false;
}
if (color[0] == '#')
{
color = color.Substring(1, color.Length - 1);
}
bool alpha;
@ -526,7 +751,9 @@ namespace Godot
if (alpha)
{
if (ParseCol8(color, 0) < 0)
{
return false;
}
}
int from = alpha ? 2 : 0;
@ -541,11 +768,24 @@ namespace Godot
return true;
}
/// <summary>
/// Returns a color constructed from integer red, green, blue, and alpha channels.
/// Each channel should have 8 bits of information ranging from 0 to 255.
/// </summary>
/// <param name="r8">The red component represented on the range of 0 to 255.</param>
/// <param name="g8">The green component represented on the range of 0 to 255.</param>
/// <param name="b8">The blue component represented on the range of 0 to 255.</param>
/// <param name="a8">The alpha (transparency) component represented on the range of 0 to 255.</param>
/// <returns>The constructed color.</returns>
public static Color Color8(byte r8, byte g8, byte b8, byte a8 = 255)
{
return new Color(r8 / 255f, g8 / 255f, b8 / 255f, a8 / 255f);
}
/// <summary>
/// Constructs a color from the HTML hexadecimal color string in RGBA format.
/// </summary>
/// <param name="rgba">A string for the HTML hexadecimal representation of this color.</param>
public Color(string rgba)
{
if (rgba.Length == 0)
@ -690,13 +930,13 @@ namespace Godot
if (Mathf.IsEqualApprox(left.g, right.g))
{
if (Mathf.IsEqualApprox(left.b, right.b))
{
return left.a < right.a;
}
return left.b < right.b;
}
return left.g < right.g;
}
return left.r < right.r;
}
@ -707,13 +947,13 @@ namespace Godot
if (Mathf.IsEqualApprox(left.g, right.g))
{
if (Mathf.IsEqualApprox(left.b, right.b))
{
return left.a > right.a;
}
return left.b > right.b;
}
return left.g > right.g;
}
return left.r > right.r;
}
@ -732,6 +972,12 @@ namespace Godot
return r == other.r && g == other.g && b == other.b && a == other.a;
}
/// <summary>
/// Returns true if this color and `other` are approximately equal, by running
/// <see cref="Godot.Mathf.IsEqualApprox(float, float)"/> on each component.
/// </summary>
/// <param name="other">The other color to compare.</param>
/// <returns>Whether or not the colors are approximately equal.</returns>
public bool IsEqualApprox(Color other)
{
return Mathf.IsEqualApprox(r, other.r) && Mathf.IsEqualApprox(g, other.g) && Mathf.IsEqualApprox(b, other.b) && Mathf.IsEqualApprox(a, other.a);

4
modules/mono/glue/GodotSharp/GodotSharp/Core/Colors.cs
View file

@ -3,6 +3,10 @@ using System.Collections.Generic;
namespace Godot
{
/// <summary>
/// This class contains color constants created from standardized color names.
/// The standardized color set is based on the X11 and .NET color names.
/// </summary>
public static class Colors
{
// Color names and values are derived from core/color_names.inc

329
modules/mono/glue/GodotSharp/GodotSharp/Core/Mathf.cs
View file

@ -11,79 +11,185 @@ namespace Godot
{
// Define constants with Decimal precision and cast down to double or float.
/// <summary>
/// The circle constant, the circumference of the unit circle in radians.
/// </summary>
public const real_t Tau = (real_t) 6.2831853071795864769252867666M; // 6.2831855f and 6.28318530717959
/// <summary>
/// Constant that represents how many times the diameter of a circle
/// fits around its perimeter. This is equivalent to `Mathf.Tau / 2`.
/// </summary>
public const real_t Pi = (real_t) 3.1415926535897932384626433833M; // 3.1415927f and 3.14159265358979
/// <summary>
/// Positive infinity. For negative infinity, use `-Mathf.Inf`.
/// </summary>
public const real_t Inf = real_t.PositiveInfinity;
/// <summary>
/// "Not a Number", an invalid value. `NaN` has special properties, including
/// that it is not equal to itself. It is output by some invalid operations,
/// such as dividing zero by zero.
/// </summary>
public const real_t NaN = real_t.NaN;
private const real_t Deg2RadConst = (real_t) 0.0174532925199432957692369077M; // 0.0174532924f and 0.0174532925199433
private const real_t Rad2DegConst = (real_t) 57.295779513082320876798154814M; // 57.29578f and 57.2957795130823
/// <summary>
/// Returns the absolute value of `s` (i.e. positive value).
/// </summary>
/// <param name="s">The input number.</param>
/// <returns>The absolute value of `s`.</returns>
public static int Abs(int s)
{
return Math.Abs(s);
}
/// <summary>
/// Returns the absolute value of `s` (i.e. positive value).
/// </summary>
/// <param name="s">The input number.</param>
/// <returns>The absolute value of `s`.</returns>
public static real_t Abs(real_t s)
{
return Math.Abs(s);
}
/// <summary>
/// Returns the arc cosine of `s` in radians. Use to get the angle of cosine s.
/// </summary>
/// <param name="s">The input cosine value. Must be on the range of -1.0 to 1.0.</param>
/// <returns>An angle that would result in the given cosine value. On the range `0` to `Tau/2`.</returns>
public static real_t Acos(real_t s)
{
return (real_t)Math.Acos(s);
}
/// <summary>
/// Returns the arc sine of `s` in radians. Use to get the angle of sine s.
/// </summary>
/// <param name="s">The input sine value. Must be on the range of -1.0 to 1.0.</param>
/// <returns>An angle that would result in the given sine value. On the range `-Tau/4` to `Tau/4`.</returns>
public static real_t Asin(real_t s)
{
return (real_t)Math.Asin(s);
}
/// <summary>
/// Returns the arc tangent of `s` in radians. Use to get the angle of tangent s.
///
/// The method cannot know in which quadrant the angle should fall.
/// See <see cref="Atan2(real_t, real_t)"/> if you have both `y` and `x`.
/// </summary>
/// <param name="s">The input tangent value.</param>
/// <returns>An angle that would result in the given tangent value. On the range `-Tau/4` to `Tau/4`.</returns>
public static real_t Atan(real_t s)
{
return (real_t)Math.Atan(s);
}
/// <summary>
/// Returns the arc tangent of `y` and `x` in radians. Use to get the angle
/// of the tangent of `y/x`. To compute the value, the method takes into
/// account the sign of both arguments in order to determine the quadrant.
///
/// Important note: The Y coordinate comes first, by convention.
/// </summary>
/// <param name="y">The Y coordinate of the point to find the angle to.</param>
/// <param name="x">The X coordinate of the point to find the angle to.</param>
/// <returns>An angle that would result in the given tangent value. On the range `-Tau/2` to `Tau/2`.</returns>
public static real_t Atan2(real_t y, real_t x)
{
return (real_t)Math.Atan2(y, x);
}
/// <summary>
/// Converts a 2D point expressed in the cartesian coordinate
/// system (X and Y axis) to the polar coordinate system
/// (a distance from the origin and an angle).
/// </summary>
/// <param name="x">The input X coordinate.</param>
/// <param name="y">The input Y coordinate.</param>
/// <returns>A <see cref="Vector2"/> with X representing the distance and Y representing the angle.</returns>
public static Vector2 Cartesian2Polar(real_t x, real_t y)
{
return new Vector2(Sqrt(x * x + y * y), Atan2(y, x));
}
/// <summary>
/// Rounds `s` upward (towards positive infinity).
/// </summary>
/// <param name="s">The number to ceil.</param>
/// <returns>The smallest whole number that is not less than `s`.</returns>
public static real_t Ceil(real_t s)
{
return (real_t)Math.Ceiling(s);
}
/// <summary>
/// Clamps a `value` so that it is not less than `min` and not more than `max`.
/// </summary>
/// <param name="value">The value to clamp.</param>
/// <param name="min">The minimum allowed value.</param>
/// <param name="max">The maximum allowed value.</param>
/// <returns>The clamped value.</returns>
public static int Clamp(int value, int min, int max)
{
return value < min ? min : value > max ? max : value;
}
/// <summary>
/// Clamps a `value` so that it is not less than `min` and not more than `max`.
/// </summary>
/// <param name="value">The value to clamp.</param>
/// <param name="min">The minimum allowed value.</param>
/// <param name="max">The maximum allowed value.</param>
/// <returns>The clamped value.</returns>
public static real_t Clamp(real_t value, real_t min, real_t max)
{
return value < min ? min : value > max ? max : value;
}
/// <summary>
/// Returns the cosine of angle `s` in radians.
/// </summary>
/// <param name="s">The angle in radians.</param>
/// <returns>The cosine of that angle.</returns>
public static real_t Cos(real_t s)
{
return (real_t)Math.Cos(s);
}
/// <summary>
/// Returns the hyperbolic cosine of angle `s` in radians.
/// </summary>
/// <param name="s">The angle in radians.</param>
/// <returns>The hyperbolic cosine of that angle.</returns>
public static real_t Cosh(real_t s)
{
return (real_t)Math.Cosh(s);
}
/// <summary>
/// Converts an angle expressed in degrees to radians.
/// </summary>
/// <param name="deg">An angle expressed in degrees.</param>
/// <returns>The same angle expressed in radians.</returns>
public static real_t Deg2Rad(real_t deg)
{
return deg * Deg2RadConst;
}
/// <summary>
/// Easing function, based on exponent. The curve values are:
/// `0` is constant, `1` is linear, `0` to `1` is ease-in, `1` or more is ease-out.
/// Negative values are in-out/out-in.
/// </summary>
/// <param name="s">The value to ease.</param>
/// <param name="curve">`0` is constant, `1` is linear, `0` to `1` is ease-in, `1` or more is ease-out.</param>
/// <returns>The eased value.</returns>
public static real_t Ease(real_t s, real_t curve)
{
if (s < 0f)
@ -118,21 +224,47 @@ namespace Godot
return 0f;
}
/// <summary>
/// The natural exponential function. It raises the mathematical
/// constant `e` to the power of `s` and returns it.
/// </summary>
/// <param name="s">The exponent to raise `e` to.</param>
/// <returns>`e` raised to the power of `s`.</returns>
public static real_t Exp(real_t s)
{
return (real_t)Math.Exp(s);
}
/// <summary>
/// Rounds `s` downward (towards negative infinity).
/// </summary>
/// <param name="s">The number to floor.</param>
/// <returns>The largest whole number that is not more than `s`.</returns>
public static real_t Floor(real_t s)
{
return (real_t)Math.Floor(s);
}
/// <summary>
/// Returns a normalized value considering the given range.
/// This is the opposite of <see cref="Lerp(real_t, real_t, real_t)"/>.
/// </summary>
/// <param name="from">The interpolated value.</param>
/// <param name="to">The destination value for interpolation.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting value of the inverse interpolation.</returns>
public static real_t InverseLerp(real_t from, real_t to, real_t weight)
{
return (weight - from) / (to - from);
}
/// <summary>
/// Returns true if `a` and `b` are approximately equal to each other.
/// The comparison is done using a tolerance calculation with <see cref="Epsilon"/>.
/// </summary>
/// <param name="a">One of the values.</param>
/// <param name="b">The other value.</param>
/// <returns>A bool for whether or not the two values are approximately equal.</returns>
public static bool IsEqualApprox(real_t a, real_t b)
{
// Check for exact equality first, required to handle "infinity" values.
@ -149,26 +281,62 @@ namespace Godot
return Abs(a - b) < tolerance;
}
/// <summary>
/// Returns whether `s` is an infinity value (either positive infinity or negative infinity).
/// </summary>
/// <param name="s">The value to check.</param>
/// <returns>A bool for whether or not the value is an infinity value.</returns>
public static bool IsInf(real_t s)
{
return real_t.IsInfinity(s);
}
/// <summary>
/// Returns whether `s` is a `NaN` ("Not a Number" or invalid) value.
/// </summary>
/// <param name="s">The value to check.</param>
/// <returns>A bool for whether or not the value is a `NaN` value.</returns>
public static bool IsNaN(real_t s)
{
return real_t.IsNaN(s);
}
/// <summary>
/// Returns true if `s` is approximately zero.
/// The comparison is done using a tolerance calculation with <see cref="Epsilon"/>.
///
/// This method is faster than using <see cref="IsEqualApprox(real_t, real_t)"/> with one value as zero.
/// </summary>
/// <param name="s">The value to check.</param>
/// <returns>A bool for whether or not the value is nearly zero.</returns>
public static bool IsZeroApprox(real_t s)
{
return Abs(s) < Epsilon;
}
/// <summary>
/// Linearly interpolates between two values by a normalized value.
/// This is the opposite <see cref="InverseLerp(real_t, real_t, real_t)"/>.
/// </summary>
/// <param name="from">The start value for interpolation.</param>
/// <param name="to">The destination value for interpolation.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting value of the interpolation.</returns>
public static real_t Lerp(real_t from, real_t to, real_t weight)
{
return from + (to - from) * weight;
}
/// <summary>
/// Linearly interpolates between two angles (in radians) by a normalized value.
///
/// Similar to <see cref="Lerp(real_t, real_t, real_t)"/>,
/// but interpolates correctly when the angles wrap around <see cref="Tau"/>.
/// </summary>
/// <param name="from">The start angle for interpolation.</param>
/// <param name="to">The destination angle for interpolation.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting angle of the interpolation.</returns>
public static real_t LerpAngle(real_t from, real_t to, real_t weight)
{
real_t difference = (to - from) % Mathf.Tau;
@ -176,36 +344,81 @@ namespace Godot
return from + distance * weight;
}
/// <summary>
/// Natural logarithm. The amount of time needed to reach a certain level of continuous growth.
///
/// Note: This is not the same as the "log" function on most calculators, which uses a base 10 logarithm.
/// </summary>
/// <param name="s">The input value.</param>
/// <returns>The natural log of `s`.</returns>
public static real_t Log(real_t s)
{
return (real_t)Math.Log(s);
}
/// <summary>
/// Returns the maximum of two values.
/// </summary>
/// <param name="a">One of the values.</param>
/// <param name="b">The other value.</param>
/// <returns>Whichever of the two values is higher.</returns>
public static int Max(int a, int b)
{
return a > b ? a : b;
}
/// <summary>
/// Returns the maximum of two values.
/// </summary>
/// <param name="a">One of the values.</param>
/// <param name="b">The other value.</param>
/// <returns>Whichever of the two values is higher.</returns>
public static real_t Max(real_t a, real_t b)
{
return a > b ? a : b;
}
/// <summary>
/// Returns the minimum of two values.
/// </summary>
/// <param name="a">One of the values.</param>
/// <param name="b">The other value.</param>
/// <returns>Whichever of the two values is lower.</returns>
public static int Min(int a, int b)
{
return a < b ? a : b;
}
/// <summary>
/// Returns the minimum of two values.
/// </summary>
/// <param name="a">One of the values.</param>
/// <param name="b">The other value.</param>
/// <returns>Whichever of the two values is lower.</returns>
public static real_t Min(real_t a, real_t b)
{
return a < b ? a : b;
}
/// <summary>
/// Moves `from` toward `to` by the `delta` value.
///
/// Use a negative delta value to move away.
/// </summary>
/// <param name="from">The start value.</param>
/// <param name="to">The value to move towards.</param>
/// <param name="delta">The amount to move by.</param>
/// <returns>The value after moving.</returns>
public static real_t MoveToward(real_t from, real_t to, real_t delta)
{
return Abs(to - from) <= delta ? to : from + Sign(to - from) * delta;
}
/// <summary>
/// Returns the nearest larger power of 2 for the integer `value`.
/// </summary>
/// <param name="value">The input value.</param>
/// <returns>The nearest larger power of 2.</returns>
public static int NearestPo2(int value)
{
value--;
@ -218,14 +431,25 @@ namespace Godot
return value;
}
/// <summary>
/// Converts a 2D point expressed in the polar coordinate
/// system (a distance from the origin `r` and an angle `th`)
/// to the cartesian coordinate system (X and Y axis).
/// </summary>
/// <param name="r">The distance from the origin.</param>
/// <param name="th">The angle of the point.</param>
/// <returns>A <see cref="Vector2"/> representing the cartesian coordinate.</returns>
public static Vector2 Polar2Cartesian(real_t r, real_t th)
{
return new Vector2(r * Cos(th), r * Sin(th));
}
/// <summary>
/// Performs a canonical Modulus operation, where the output is on the range [0, b).
/// Performs a canonical Modulus operation, where the output is on the range `[0, b)`.
/// </summary>
/// <param name="a">The dividend, the primary input.</param>
/// <param name="b">The divisor. The output is on the range `[0, b)`.</param>
/// <returns>The resulting output.</returns>
public static int PosMod(int a, int b)
{
int c = a % b;
@ -237,8 +461,11 @@ namespace Godot
}
/// <summary>
/// Performs a canonical Modulus operation, where the output is on the range [0, b).
/// Performs a canonical Modulus operation, where the output is on the range `[0, b)`.
/// </summary>
/// <param name="a">The dividend, the primary input.</param>
/// <param name="b">The divisor. The output is on the range `[0, b)`.</param>
/// <returns>The resulting output.</returns>
public static real_t PosMod(real_t a, real_t b)
{
real_t c = a % b;
@ -249,43 +476,89 @@ namespace Godot
return c;
}
/// <summary>
/// Returns the result of `x` raised to the power of `y`.
/// </summary>
/// <param name="x">The base.</param>
/// <param name="y">The exponent.</param>
/// <returns>`x` raised to the power of `y`.</returns>
public static real_t Pow(real_t x, real_t y)
{
return (real_t)Math.Pow(x, y);
}
/// <summary>
/// Converts an angle expressed in radians to degrees.
/// </summary>
/// <param name="rad">An angle expressed in radians.</param>
/// <returns>The same angle expressed in degrees.</returns>
public static real_t Rad2Deg(real_t rad)
{
return rad * Rad2DegConst;
}
/// <summary>
/// Rounds `s` to the nearest whole number,
/// with halfway cases rounded towards the nearest multiple of two.
/// </summary>
/// <param name="s">The number to round.</param>
/// <returns>The rounded number.</returns>
public static real_t Round(real_t s)
{
return (real_t)Math.Round(s);
}
/// <summary>
/// Returns the sign of `s`: `-1` or `1`. Returns `0` if `s` is `0`.
/// </summary>
/// <param name="s">The input number.</param>
/// <returns>One of three possible values: `1`, `-1`, or `0`.</returns>
public static int Sign(int s)
{
if (s == 0) return 0;
return s < 0 ? -1 : 1;
}
/// <summary>
/// Returns the sign of `s`: `-1` or `1`. Returns `0` if `s` is `0`.
/// </summary>
/// <param name="s">The input number.</param>
/// <returns>One of three possible values: `1`, `-1`, or `0`.</returns>
public static int Sign(real_t s)
{
if (s == 0) return 0;
return s < 0 ? -1 : 1;
}
/// <summary>
/// Returns the sine of angle `s` in radians.
/// </summary>
/// <param name="s">The angle in radians.</param>
/// <returns>The sine of that angle.</returns>
public static real_t Sin(real_t s)
{
return (real_t)Math.Sin(s);
}
/// <summary>
/// Returns the hyperbolic sine of angle `s` in radians.
/// </summary>
/// <param name="s">The angle in radians.</param>
/// <returns>The hyperbolic sine of that angle.</returns>
public static real_t Sinh(real_t s)
{
return (real_t)Math.Sinh(s);
}
/// <summary>
/// Returns a number smoothly interpolated between `from` and `to`,
/// based on the `weight`. Similar to <see cref="Lerp(real_t, real_t, real_t)"/>,
/// but interpolates faster at the beginning and slower at the end.
/// </summary>
/// <param name="from">The start value for interpolation.</param>
/// <param name="to">The destination value for interpolation.</param>
/// <param name="weight">A value representing the amount of interpolation.</param>
/// <returns>The resulting value of the interpolation.</returns>
public static real_t SmoothStep(real_t from, real_t to, real_t weight)
{
if (IsEqualApprox(from, to))
@ -296,11 +569,25 @@ namespace Godot
return x * x * (3 - 2 * x);
}
/// <summary>
/// Returns the square root of `s`, where `s` is a non-negative number.
///
/// If you need negative inputs, use `System.Numerics.Complex`.
/// </summary>
/// <param name="s">The input number. Must not be negative.</param>
/// <returns>The square root of `s`.</returns>
public static real_t Sqrt(real_t s)
{
return (real_t)Math.Sqrt(s);
}
/// <summary>
/// Returns the position of the first non-zero digit, after the
/// decimal point. Note that the maximum return value is 10,
/// which is a design decision in the implementation.
/// </summary>
/// <param name="step">The input value.</param>
/// <returns>The position of the first non-zero digit.</returns>
public static int StepDecimals(real_t step)
{
double[] sd = new double[] {
@ -326,32 +613,68 @@ namespace Godot
return 0;
}
/// <summary>
/// Snaps float value `s` to a given `step`.
/// This can also be used to round a floating point
/// number to an arbitrary number of decimals.
/// </summary>
/// <param name="s">The value to stepify.</param>
/// <param name="step">The step size to snap to.</param>
/// <returns></returns>
public static real_t Stepify(real_t s, real_t step)
{
if (step != 0f)
{
s = Floor(s / step + 0.5f) * step;
return Floor(s / step + 0.5f) * step;
}
return s;
}
/// <summary>
/// Returns the tangent of angle `s` in radians.
/// </summary>
/// <param name="s">The angle in radians.</param>
/// <returns>The tangent of that angle.</returns>
public static real_t Tan(real_t s)
{
return (real_t)Math.Tan(s);
}
/// <summary>
/// Returns the hyperbolic tangent of angle `s` in radians.
/// </summary>
/// <param name="s">The angle in radians.</param>
/// <returns>The hyperbolic tangent of that angle.</returns>
public static real_t Tanh(real_t s)
{
return (real_t)Math.Tanh(s);
}
/// <summary>
/// Wraps `value` between `min` and `max`. Usable for creating loop-alike
/// behavior or infinite surfaces. If `min` is `0`, this is equivalent
/// to <see cref="PosMod(int, int)"/>, so prefer using that instead.
/// </summary>
/// <param name="value">The value to wrap.</param>
/// <param name="min">The minimum allowed value and lower bound of the range.</param>
/// <param name="max">The maximum allowed value and upper bound of the range.</param>
/// <returns>The wrapped value.</returns>
public static int Wrap(int value, int min, int max)
{
int range = max - min;
return range == 0 ? min : min + ((value - min) % range + range) % range;
}
/// <summary>
/// Wraps `value` between `min` and `max`. Usable for creating loop-alike
/// behavior or infinite surfaces. If `min` is `0`, this is equivalent
/// to <see cref="PosMod(real_t, real_t)"/>, so prefer using that instead.
/// </summary>
/// <param name="value">The value to wrap.</param>
/// <param name="min">The minimum allowed value and lower bound of the range.</param>
/// <param name="max">The maximum allowed value and upper bound of the range.</param>
/// <returns>The wrapped value.</returns>
public static real_t Wrap(real_t value, real_t min, real_t max)
{
real_t range = max - min;

49
modules/mono/glue/GodotSharp/GodotSharp/Core/MathfEx.cs
View file

@ -12,40 +12,89 @@ namespace Godot
{
// Define constants with Decimal precision and cast down to double or float.
/// <summary>
/// The natural number `e`.
/// </summary>
public const real_t E = (real_t) 2.7182818284590452353602874714M; // 2.7182817f and 2.718281828459045
/// <summary>
/// The square root of 2.
/// </summary>
public const real_t Sqrt2 = (real_t) 1.4142135623730950488016887242M; // 1.4142136f and 1.414213562373095
/// <summary>
/// A very small number used for float comparison with error tolerance.
/// 1e-06 with single-precision floats, but 1e-14 if `REAL_T_IS_DOUBLE`.
/// </summary>
#if REAL_T_IS_DOUBLE
public const real_t Epsilon = 1e-14; // Epsilon size should depend on the precision used.
#else
public const real_t Epsilon = 1e-06f;
#endif
/// <summary>
/// Returns the amount of digits after the decimal place.
/// </summary>
/// <param name="s">The input value.</param>
/// <returns>The amount of digits.</returns>
public static int DecimalCount(real_t s)
{
return DecimalCount((decimal)s);
}
/// <summary>
/// Returns the amount of digits after the decimal place.
/// </summary>
/// <param name="s">The input <see cref="System.Decimal"/> value.</param>
/// <returns>The amount of digits.</returns>
public static int DecimalCount(decimal s)
{
return BitConverter.GetBytes(decimal.GetBits(s)[3])[2];
}
/// <summary>
/// Rounds `s` upward (towards positive infinity).
///
/// This is the same as <see cref="Ceil(real_t)"/>, but returns an `int`.
/// </summary>
/// <param name="s">The number to ceil.</param>
/// <returns>The smallest whole number that is not less than `s`.</returns>
public static int CeilToInt(real_t s)
{
return (int)Math.Ceiling(s);
}
/// <summary>
/// Rounds `s` downward (towards negative infinity).
///
/// This is the same as <see cref="Floor(real_t)"/>, but returns an `int`.
/// </summary>
/// <param name="s">The number to floor.</param>
/// <returns>The largest whole number that is not more than `s`.</returns>
public static int FloorToInt(real_t s)
{
return (int)Math.Floor(s);
}
/// <summary>
///
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static int RoundToInt(real_t s)
{
return (int)Math.Round(s);
}
/// <summary>
/// Returns true if `a` and `b` are approximately equal to each other.
/// The comparison is done using the provided tolerance value.
/// If you want the tolerance to be calculated for you, use <see cref="IsEqualApprox(real_t, real_t)"/>.
/// </summary>
/// <param name="a">One of the values.</param>
/// <param name="b">The other value.</param>
/// <param name="tolerance">The pre-calculated tolerance value.</param>
/// <returns>A bool for whether or not the two values are equal.</returns>
public static bool IsEqualApprox(real_t a, real_t b, real_t tolerance)
{
// Check for exact equality first, required to handle "infinity" values.

149
modules/mono/glue/GodotSharp/GodotSharp/Core/Plane.cs
View file

@ -8,18 +8,33 @@ using real_t = System.Single;
namespace Godot
{
/// <summary>
/// Plane represents a normalized plane equation.
/// "Over" or "Above" the plane is considered the side of
/// the plane towards where the normal is pointing.
/// </summary>
[Serializable]
[StructLayout(LayoutKind.Sequential)]
public struct Plane : IEquatable<Plane>
{
private Vector3 _normal;
/// <summary>
/// The normal of the plane, which must be normalized.
/// In the scalar equation of the plane `ax + by + cz = d`, this is
/// the vector `(a, b, c)`, where `d` is the <see cref="D"/> property.
/// </summary>
/// <value>Equivalent to `x`, `y`, and `z`.</value>
public Vector3 Normal
{
get { return _normal; }
set { _normal = value; }
}
/// <summary>
/// The X component of the plane's normal vector.
/// </summary>
/// <value>Equivalent to <see cref="Normal"/>'s X value.</value>
public real_t x
{
get
@ -32,6 +47,10 @@ namespace Godot
}
}
/// <summary>
/// The Y component of the plane's normal vector.
/// </summary>
/// <value>Equivalent to <see cref="Normal"/>'s Y value.</value>
public real_t y
{
get
@ -44,6 +63,10 @@ namespace Godot
}
}
/// <summary>
/// The Z component of the plane's normal vector.
/// </summary>
/// <value>Equivalent to <see cref="Normal"/>'s Z value.</value>
public real_t z
{
get
@ -56,38 +79,82 @@ namespace Godot
}
}
/// <summary>
/// The distance from the origin to the plane (in the direction of
/// <see cref="Normal"/>). This value is typically non-negative.
/// In the scalar equation of the plane `ax + by + cz = d`,
/// this is `d`, while the `(a, b, c)` coordinates are represented
/// by the <see cref="Normal"/> property.
/// </summary>
/// <value>The plane's distance from the origin.</value>
public real_t D { get; set; }
/// <summary>
/// The center of the plane, the point where the normal line intersects the plane.
/// </summary>
/// <value>Equivalent to <see cref="Normal"/> multiplied by `D`.</value>
public Vector3 Center
{
get
{
return _normal * D;
}
set
{
_normal = value.Normalized();
D = value.Length();
}
}
/// <summary>
/// Returns the shortest distance from this plane to the position `point`.
/// </summary>
/// <param name="point">The position to use for the calcualtion.</param>
/// <returns>The shortest distance.</returns>
public real_t DistanceTo(Vector3 point)
{
return _normal.Dot(point) - D;
}
/// <summary>
/// The center of the plane, the point where the normal line intersects the plane.
/// Deprecated, use the Center property instead.
/// </summary>
/// <returns>Equivalent to <see cref="Normal"/> multiplied by `D`.</returns>
[Obsolete("GetAnyPoint is deprecated. Use the Center property instead.")]
public Vector3 GetAnyPoint()
{
return _normal * D;
}
/// <summary>
/// Returns true if point is inside the plane.
/// Comparison uses a custom minimum epsilon threshold.
/// </summary>
/// <param name="point">The point to check.</param>
/// <param name="epsilon">The tolerance threshold.</param>
/// <returns>A bool for whether or not the plane has the point.</returns>
public bool HasPoint(Vector3 point, real_t epsilon = Mathf.Epsilon)
{
real_t dist = _normal.Dot(point) - D;
return Mathf.Abs(dist) <= epsilon;
}
/// <summary>
/// Returns the intersection point of the three planes: `b`, `c`,
/// and this plane. If no intersection is found, `null` is returned.
/// </summary>
/// <param name="b">One of the three planes to use in the calculation.</param>
/// <param name="c">One of the three planes to use in the calculation.</param>
/// <returns>The intersection, or `null` if none is found.</returns>
public Vector3? Intersect3(Plane b, Plane c)
{
real_t denom = _normal.Cross(b._normal).Dot(c._normal);
if (Mathf.IsZeroApprox(denom))
{
return null;
}
Vector3 result = b._normal.Cross(c._normal) * D +
c._normal.Cross(_normal) * b.D +
@ -96,54 +163,94 @@ namespace Godot
return result / denom;
}
/// <summary>
/// Returns the intersection point of a ray consisting of the
/// position `from` and the direction normal `dir` with this plane.
/// If no intersection is found, `null` is returned.
/// </summary>
/// <param name="from">The start of the ray.</param>
/// <param name="dir">The direction of the ray, normalized.</param>
/// <returns>The intersection, or `null` if none is found.</returns>
public Vector3? IntersectRay(Vector3 from, Vector3 dir)
{
real_t den = _normal.Dot(dir);
if (Mathf.IsZeroApprox(den))
{
return null;
}
real_t dist = (_normal.Dot(from) - D) / den;
// This is a ray, before the emitting pos (from) does not exist
if (dist > Mathf.Epsilon)
{
return null;
}
return from + dir * -dist;
}
/// <summary>
/// Returns the intersection point of a line segment from
/// position `begin` to position `end` with this plane.
/// If no intersection is found, `null` is returned.
/// </summary>
/// <param name="begin">The start of the line segment.</param>
/// <param name="end">The end of the line segment.</param>
/// <returns>The intersection, or `null` if none is found.</returns>
public Vector3? IntersectSegment(Vector3 begin, Vector3 end)
{
Vector3 segment = begin - end;
real_t den = _normal.Dot(segment);
if (Mathf.IsZeroApprox(den))
{
return null;
}
real_t dist = (_normal.Dot(begin) - D) / den;
// Only allow dist to be in the range of 0 to 1, with tolerance.
if (dist < -Mathf.Epsilon || dist > 1.0f + Mathf.Epsilon)
{
return null;
}
return begin + segment * -dist;
}
/// <summary>
/// Returns true if `point` is located above the plane.
/// </summary>
/// <param name="point">The point to check.</param>
/// <returns>A bool for whether or not the point is above the plane.</returns>
public bool IsPointOver(Vector3 point)
{
return _normal.Dot(point) > D;
}
/// <summary>
/// Returns the plane scaled to unit length.
/// </summary>
/// <returns>A normalized version of the plane.</returns>
public Plane Normalized()
{
real_t len = _normal.Length();
if (len == 0)
{
return new Plane(0, 0, 0, 0);
}
return new Plane(_normal / len, D / len);
}
/// <summary>
/// Returns the orthogonal projection of `point` into the plane.
/// </summary>
/// <param name="point">The point to project.</param>
/// <returns>The projected point.</returns>
public Vector3 Project(Vector3 point)
{
return point - _normal * DistanceTo(point);
@ -154,22 +261,56 @@ namespace Godot
private static readonly Plane _planeXZ = new Plane(0, 1, 0, 0);
private static readonly Plane _planeXY = new Plane(0, 0, 1, 0);
/// <summary>
/// A plane that extends in the Y and Z axes (normal vector points +X).
/// </summary>
/// <value>Equivalent to `new Plane(1, 0, 0, 0)`.</value>
public static Plane PlaneYZ { get { return _planeYZ; } }
/// <summary>
/// A plane that extends in the X and Z axes (normal vector points +Y).
/// </summary>
/// <value>Equivalent to `new Plane(0, 1, 0, 0)`.</value>
public static Plane PlaneXZ { get { return _planeXZ; } }
/// <summary>
/// A plane that extends in the X and Y axes (normal vector points +Z).
/// </summary>
/// <value>Equivalent to `new Plane(0, 0, 1, 0)`.</value>
public static Plane PlaneXY { get { return _planeXY; } }
// Constructors
/// <summary>
/// Constructs a plane from four values. `a`, `b` and `c` become the
/// components of the resulting plane's <see cref="Normal"/> vector.
/// `d` becomes the plane's distance from the origin.
/// </summary>
/// <param name="a">The X component of the plane's normal vector.</param>
/// <param name="b">The Y component of the plane's normal vector.</param>
/// <param name="c">The Z component of the plane's normal vector.</param>
/// <param name="d">The plane's distance from the origin. This value is typically non-negative.</param>
public Plane(real_t a, real_t b, real_t c, real_t d)
{
_normal = new Vector3(a, b, c);
this.D = d;
}
/// <summary>
/// Constructs a plane from a normal vector and the plane's distance to the origin.
/// </summary>
/// <param name="normal">The normal of the plane, must be normalized.</param>
/// <param name="d">The plane's distance from the origin. This value is typically non-negative.</param>
public Plane(Vector3 normal, real_t d)
{
this._normal = normal;
this.D = d;
}
/// <summary>
/// Constructs a plane from the three points, given in clockwise order.
/// </summary>
/// <param name="v1">The first point.</param>
/// <param name="v2">The second point.</param>
/// <param name="v3">The third point.</param>
public Plane(Vector3 v1, Vector3 v2, Vector3 v3)
{
_normal = (v1 - v3).Cross(v1 - v2);
@ -207,6 +348,12 @@ namespace Godot
return _normal == other._normal && D == other.D;
}
/// <summary>
/// Returns true if this plane and `other` are approximately equal, by running
/// <see cref="Mathf.IsEqualApprox(real_t, real_t)"/> on each component.
/// </summary>
/// <param name="other">The other plane to compare.</param>
/// <returns>Whether or not the planes are approximately equal.</returns>
public bool IsEqualApprox(Plane other)
{
return _normal.IsEqualApprox(other._normal) && Mathf.IsEqualApprox(D, other.D);

230
modules/mono/glue/GodotSharp/GodotSharp/Core/Quat.cs
View file

@ -8,15 +8,51 @@ using real_t = System.Single;
namespace Godot
{
/// <summary>
/// A unit quaternion used for representing 3D rotations.
/// Quaternions need to be normalized to be used for rotation.
///
/// It is similar to Basis, which implements matrix representation of
/// rotations, and can be parametrized using both an axis-angle pair
/// or Euler angles. Basis stores rotation, scale, and shearing,
/// while Quat only stores rotation.
///
/// Due to its compactness and the way it is stored in memory, certain
/// operations (obtaining axis-angle and performing SLERP, in particular)
/// are more efficient and robust against floating-point errors.
/// </summary>
[Serializable]
[StructLayout(LayoutKind.Sequential)]
public struct Quat : IEquatable<Quat>
{
/// <summary>
/// X component of the quaternion (imaginary `i` axis part).
/// Quaternion components should usually not be manipulated directly.
/// </summary>
public real_t x;
/// <summary>
/// Y component of the quaternion (imaginary `j` axis part).
/// Quaternion components should usually not be manipulated directly.
/// </summary>
public real_t y;
/// <summary>
/// Z component of the quaternion (imaginary `k` axis part).
/// Quaternion components should usually not be manipulated directly.
/// </summary>
public real_t z;
/// <summary>
/// W component of the quaternion (real part).
/// Quaternion components should usually not be manipulated directly.
/// </summary>
public real_t w;
/// <summary>
/// Access quaternion components using their index.
/// </summary>
/// <value>`[0]` is equivalent to `.x`, `[1]` is equivalent to `.y`, `[2]` is equivalent to `.z`, `[3]` is equivalent to `.w`.</value>
public real_t this[int index]
{
get
@ -57,16 +93,35 @@ namespace Godot
}
}
/// <summary>
/// Returns the length (magnitude) of the quaternion.
/// </summary>
/// <value>Equivalent to `Mathf.Sqrt(LengthSquared)`.</value>
public real_t Length
{
get { return Mathf.Sqrt(LengthSquared); }
}
/// <summary>
/// Returns the squared length (squared magnitude) of the quaternion.
/// This method runs faster than <see cref="Length"/>, so prefer it if
/// you need to compare quaternions or need the squared length for some formula.
/// </summary>
/// <value>Equivalent to `Dot(this)`.</value>
public real_t LengthSquared
{
get { return Dot(this); }
}
/// <summary>
/// Performs a cubic spherical interpolation between quaternions `preA`,
/// this vector, `b`, and `postB`, by the given amount `t`.
/// </summary>
/// <param name="b">The destination quaternion.</param>
/// <param name="preA">A quaternion before this quaternion.</param>
/// <param name="postB">A quaternion after `b`.</param>
/// <param name="t">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The interpolated quaternion.</returns>
public Quat CubicSlerp(Quat b, Quat preA, Quat postB, real_t t)
{
real_t t2 = (1.0f - t) * t * 2f;
@ -75,30 +130,63 @@ namespace Godot
return sp.Slerpni(sq, t2);
}
/// <summary>
/// Returns the dot product of two quaternions.
/// </summary>
/// <param name="b">The other quaternion.</param>
/// <returns>The dot product.</returns>
public real_t Dot(Quat b)
{
return x * b.x + y * b.y + z * b.z + w * b.w;
}
/// <summary>
/// Returns Euler angles (in the YXZ convention: when decomposing,
/// first Z, then X, and Y last) corresponding to the rotation
/// represented by the unit quaternion. Returned vector contains
/// the rotation angles in the format (X angle, Y angle, Z angle).
/// </summary>
/// <returns>The Euler angle representation of this quaternion.</returns>
public Vector3 GetEuler()
{
#if DEBUG
if (!IsNormalized())
{
throw new InvalidOperationException("Quat is not normalized");
}
#endif
var basis = new Basis(this);
return basis.GetEuler();
}
/// <summary>
/// Returns the inverse of the quaternion.
/// </summary>
/// <returns>The inverse quaternion.</returns>
public Quat Inverse()
{
#if DEBUG
if (!IsNormalized())
{
throw new InvalidOperationException("Quat is not normalized");
}
#endif
return new Quat(-x, -y, -z, w);
}
/// <summary>
/// Returns whether the quaternion is normalized or not.
/// </summary>
/// <returns>A bool for whether the quaternion is normalized or not.</returns>
public bool IsNormalized()
{
return Mathf.Abs(LengthSquared - 1) <= Mathf.Epsilon;
}
/// <summary>
/// Returns a copy of the quaternion, normalized to unit length.
/// </summary>
/// <returns>The normalized quaternion.</returns>
public Quat Normalized()
{
return this / Length;
@ -131,56 +219,69 @@ namespace Godot
this = new Quat(eulerYXZ);
}
public Quat Slerp(Quat b, real_t t)
/// <summary>
/// Returns the result of the spherical linear interpolation between
/// this quaternion and `to` by amount `weight`.
///
/// Note: Both quaternions must be normalized.
/// </summary>
/// <param name="to">The destination quaternion for interpolation. Must be normalized.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting quaternion of the interpolation.</returns>
public Quat Slerp(Quat to, real_t weight)
{
#if DEBUG
if (!IsNormalized())
{
throw new InvalidOperationException("Quat is not normalized");
if (!b.IsNormalized())
throw new ArgumentException("Argument is not normalized", nameof(b));
}
if (!to.IsNormalized())
{
throw new ArgumentException("Argument is not normalized", nameof(to));
}
#endif
// Calculate cosine
real_t cosom = x * b.x + y * b.y + z * b.z + w * b.w;
// Calculate cosine.
real_t cosom = x * to.x + y * to.y + z * to.z + w * to.w;
var to1 = new Quat();
// Adjust signs if necessary
// Adjust signs if necessary.
if (cosom < 0.0)
{
cosom = -cosom;
to1.x = -b.x;
to1.y = -b.y;
to1.z = -b.z;
to1.w = -b.w;
to1.x = -to.x;
to1.y = -to.y;
to1.z = -to.z;
to1.w = -to.w;
}
else
{
to1.x = b.x;
to1.y = b.y;
to1.z = b.z;
to1.w = b.w;
to1.x = to.x;
to1.y = to.y;
to1.z = to.z;
to1.w = to.w;
}
real_t sinom, scale0, scale1;
// Calculate coefficients
// Calculate coefficients.
if (1.0 - cosom > Mathf.Epsilon)
{
// Standard case (Slerp)
// Standard case (Slerp).
real_t omega = Mathf.Acos(cosom);
sinom = Mathf.Sin(omega);
scale0 = Mathf.Sin((1.0f - t) * omega) / sinom;
scale1 = Mathf.Sin(t * omega) / sinom;
scale0 = Mathf.Sin((1.0f - weight) * omega) / sinom;
scale1 = Mathf.Sin(weight * omega) / sinom;
}
else
{
// Quaternions are very close so we can do a linear interpolation
scale0 = 1.0f - t;
scale1 = t;
// Quaternions are very close so we can do a linear interpolation.
scale0 = 1.0f - weight;
scale1 = weight;
}
// Calculate final values
// Calculate final values.
return new Quat
(
scale0 * x + scale1 * to1.x,
@ -190,9 +291,17 @@ namespace Godot
);
}
public Quat Slerpni(Quat b, real_t t)
/// <summary>
/// Returns the result of the spherical linear interpolation between
/// this quaternion and `to` by amount `weight`, but without
/// checking if the rotation path is not bigger than 90 degrees.
/// </summary>
/// <param name="to">The destination quaternion for interpolation. Must be normalized.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting quaternion of the interpolation.</returns>
public Quat Slerpni(Quat to, real_t weight)
{
real_t dot = Dot(b);
real_t dot = Dot(to);
if (Mathf.Abs(dot) > 0.9999f)
{
@ -201,33 +310,54 @@ namespace Godot
real_t theta = Mathf.Acos(dot);
real_t sinT = 1.0f / Mathf.Sin(theta);
real_t newFactor = Mathf.Sin(t * theta) * sinT;
real_t invFactor = Mathf.Sin((1.0f - t) * theta) * sinT;
real_t newFactor = Mathf.Sin(weight * theta) * sinT;
real_t invFactor = Mathf.Sin((1.0f - weight) * theta) * sinT;
return new Quat
(
invFactor * x + newFactor * b.x,
invFactor * y + newFactor * b.y,
invFactor * z + newFactor * b.z,
invFactor * w + newFactor * b.w
invFactor * x + newFactor * to.x,
invFactor * y + newFactor * to.y,
invFactor * z + newFactor * to.z,
invFactor * w + newFactor * to.w
);
}
/// <summary>
/// Returns a vector transformed (multiplied) by this quaternion.
/// </summary>
/// <param name="v">A vector to transform.</param>
/// <returns>The transfomed vector.</returns>
public Vector3 Xform(Vector3 v)
{
#if DEBUG
if (!IsNormalized())
{
throw new InvalidOperationException("Quat is not normalized");
}
#endif
var u = new Vector3(x, y, z);
Vector3 uv = u.Cross(v);
return v + ((uv * w) + u.Cross(uv)) * 2;
}
// Static Readonly Properties
public static Quat Identity { get; } = new Quat(0f, 0f, 0f, 1f);
// Constants
private static readonly Quat _identity = new Quat(0, 0, 0, 1);
// Constructors
/// <summary>
/// The identity quaternion, representing no rotation.
/// Equivalent to an identity <see cref="Basis"/> matrix. If a vector is transformed by
/// an identity quaternion, it will not change.
/// </summary>
/// <value>Equivalent to `new Quat(0, 0, 0, 1)`.</value>
public static Quat Identity { get { return _identity; } }
/// <summary>
/// Constructs a quaternion defined by the given values.
/// </summary>
/// <param name="x">X component of the quaternion (imaginary `i` axis part).</param>
/// <param name="y">Y component of the quaternion (imaginary `j` axis part).</param>
/// <param name="z">Z component of the quaternion (imaginary `k` axis part).</param>
/// <param name="w">W component of the quaternion (real part).</param>
public Quat(real_t x, real_t y, real_t z, real_t w)
{
this.x = x;
@ -236,21 +366,31 @@ namespace Godot
this.w = w;
}
public bool IsNormalized()
{
return Mathf.Abs(LengthSquared - 1) <= Mathf.Epsilon;
}
/// <summary>
/// Constructs a quaternion from the given quaternion.
/// </summary>
/// <param name="q">The existing quaternion.</param>
public Quat(Quat q)
{
this = q;
}
/// <summary>
/// Constructs a quaternion from the given <see cref="Basis"/>.
/// </summary>
/// <param name="basis">The basis to construct from.</param>
public Quat(Basis basis)
{
this = basis.Quat();
}
/// <summary>
/// Constructs a quaternion that will perform a rotation specified by
/// Euler angles (in the YXZ convention: when decomposing,
/// first Z, then X, and Y last),
/// given in the vector format as (X angle, Y angle, Z angle).
/// </summary>
/// <param name="eulerYXZ"></param>
public Quat(Vector3 eulerYXZ)
{
real_t half_a1 = eulerYXZ.y * 0.5f;
@ -274,11 +414,19 @@ namespace Godot
w = sin_a1 * sin_a2 * sin_a3 + cos_a1 * cos_a2 * cos_a3;
}
/// <summary>
/// Constructs a quaternion that will rotate around the given axis
/// by the specified angle. The axis must be a normalized vector.
/// </summary>
/// <param name="axis">The axis to rotate around. Must be normalized.</param>
/// <param name="angle">The angle to rotate, in radians.</param>
public Quat(Vector3 axis, real_t angle)
{
#if DEBUG
if (!axis.IsNormalized())
{
throw new ArgumentException("Argument is not normalized", nameof(axis));
}
#endif
real_t d = axis.Length();
@ -391,6 +539,12 @@ namespace Godot
return x == other.x && y == other.y && z == other.z && w == other.w;
}
/// <summary>
/// Returns true if this quaternion and `other` are approximately equal, by running
/// <see cref="Mathf.IsEqualApprox(real_t, real_t)"/> on each component.
/// </summary>
/// <param name="other">The other quaternion to compare.</param>
/// <returns>Whether or not the quaternions are approximately equal.</returns>
public bool IsEqualApprox(Quat other)
{
return Mathf.IsEqualApprox(x, other.x) && Mathf.IsEqualApprox(y, other.y) && Mathf.IsEqualApprox(z, other.z) && Mathf.IsEqualApprox(w, other.w);

183
modules/mono/glue/GodotSharp/GodotSharp/Core/Rect2.cs
View file

@ -8,6 +8,10 @@ using real_t = System.Single;
namespace Godot
{
/// <summary>
/// 2D axis-aligned bounding box. Rect2 consists of a position, a size, and
/// several utility functions. It is typically used for fast overlap tests.
/// </summary>
[Serializable]
[StructLayout(LayoutKind.Sequential)]
public struct Rect2 : IEquatable<Rect2>
@ -15,29 +19,52 @@ namespace Godot
private Vector2 _position;
private Vector2 _size;
/// <summary>
/// Beginning corner. Typically has values lower than End.
/// </summary>
/// <value>Directly uses a private field.</value>
public Vector2 Position
{
get { return _position; }
set { _position = value; }
}
/// <summary>
/// Size from Position to End. Typically all components are positive.
/// If the size is negative, you can use <see cref="Abs"/> to fix it.
/// </summary>
/// <value>Directly uses a private field.</value>
public Vector2 Size
{
get { return _size; }
set { _size = value; }
}
/// <summary>
/// Ending corner. This is calculated as <see cref="Position"/> plus
/// <see cref="Size"/>. Setting this value will change the size.
/// </summary>
/// <value>Getting is equivalent to `value = Position + Size`, setting is equivalent to `Size = value - Position`.</value>
public Vector2 End
{
get { return _position + _size; }
set { _size = value - _position; }
}
/// <summary>
/// The area of this rect.
/// </summary>
/// <value>Equivalent to <see cref="GetArea()"/>.</value>
public real_t Area
{
get { return GetArea(); }
}
/// <summary>
/// Returns a Rect2 with equivalent position and size, modified so that
/// the top-left corner is the origin and width and height are positive.
/// </summary>
/// <returns>The modified rect.</returns>
public Rect2 Abs()
{
Vector2 end = End;
@ -45,12 +72,19 @@ namespace Godot
return new Rect2(topLeft, _size.Abs());
}
/// <summary>
/// Returns the intersection of this Rect2 and `b`.
/// </summary>
/// <param name="b">The other rect.</param>
/// <returns>The clipped rect.</returns>
public Rect2 Clip(Rect2 b)
{
var newRect = b;
if (!Intersects(newRect))
{
return new Rect2();
}
newRect._position.x = Mathf.Max(b._position.x, _position.x);
newRect._position.y = Mathf.Max(b._position.y, _position.y);
@ -64,6 +98,11 @@ namespace Godot
return newRect;
}
/// <summary>
/// Returns true if this Rect2 completely encloses another one.
/// </summary>
/// <param name="b">The other rect that may be enclosed.</param>
/// <returns>A bool for whether or not this rect encloses `b`.</returns>
public bool Encloses(Rect2 b)
{
return b._position.x >= _position.x && b._position.y >= _position.y &&
@ -71,6 +110,11 @@ namespace Godot
b._position.y + b._size.y < _position.y + _size.y;
}
/// <summary>
/// Returns this Rect2 expanded to include a given point.
/// </summary>
/// <param name="to">The point to include.</param>
/// <returns>The expanded rect.</returns>
public Rect2 Expand(Vector2 to)
{
var expanded = this;
@ -79,14 +123,22 @@ namespace Godot
Vector2 end = expanded._position + expanded._size;
if (to.x < begin.x)
{
begin.x = to.x;
}
if (to.y < begin.y)
{
begin.y = to.y;
}
if (to.x > end.x)
{
end.x = to.x;
}
if (to.y > end.y)
{
end.y = to.y;
}
expanded._position = begin;
expanded._size = end - begin;
@ -94,11 +146,20 @@ namespace Godot
return expanded;
}
/// <summary>
/// Returns the area of the Rect2.
/// </summary>
/// <returns>The area.</returns>
public real_t GetArea()
{
return _size.x * _size.y;
}
/// <summary>
/// Returns a copy of the Rect2 grown a given amount of units towards all the sides.
/// </summary>
/// <param name="by">The amount to grow by.</param>
/// <returns>The grown rect.</returns>
public Rect2 Grow(real_t by)
{
var g = this;
@ -111,6 +172,14 @@ namespace Godot
return g;
}
/// <summary>
/// Returns a copy of the Rect2 grown a given amount of units towards each direction individually.
/// </summary>
/// <param name="left">The amount to grow by on the left.</param>
/// <param name="top">The amount to grow by on the top.</param>
/// <param name="right">The amount to grow by on the right.</param>
/// <param name="bottom">The amount to grow by on the bottom.</param>
/// <returns>The grown rect.</returns>
public Rect2 GrowIndividual(real_t left, real_t top, real_t right, real_t bottom)
{
var g = this;
@ -123,6 +192,12 @@ namespace Godot
return g;
}
/// <summary>
/// Returns a copy of the Rect2 grown a given amount of units towards the <see cref="Margin"/> direction.
/// </summary>
/// <param name="margin">The direction to grow in.</param>
/// <param name="by">The amount to grow by.</param>
/// <returns>The grown rect.</returns>
public Rect2 GrowMargin(Margin margin, real_t by)
{
var g = this;
@ -135,11 +210,20 @@ namespace Godot
return g;
}
/// <summary>
/// Returns true if the Rect2 is flat or empty, or false otherwise.
/// </summary>
/// <returns>A bool for whether or not the rect has area.</returns>
public bool HasNoArea()
{
return _size.x <= 0 || _size.y <= 0;
}
/// <summary>
/// Returns true if the Rect2 contains a point, or false otherwise.
/// </summary>
/// <param name="point">The point to check.</param>
/// <returns>A bool for whether or not the rect contains `point`.</returns>
public bool HasPoint(Vector2 point)
{
if (point.x < _position.x)
@ -155,20 +239,65 @@ namespace Godot
return true;
}
public bool Intersects(Rect2 b)
/// <summary>
/// Returns true if the Rect2 overlaps with `b`
/// (i.e. they have at least one point in common).
///
/// If `includeBorders` is true, they will also be considered overlapping
/// if their borders touch, even without intersection.
/// </summary>
/// <param name="b">The other rect to check for intersections with.</param>
/// <param name="includeBorders">Whether or not to consider borders.</param>
/// <returns>A bool for whether or not they are intersecting.</returns>
public bool Intersects(Rect2 b, bool includeBorders = false)
{
if (_position.x >= b._position.x + b._size.x)
return false;
if (_position.x + _size.x <= b._position.x)
return false;
if (_position.y >= b._position.y + b._size.y)
return false;
if (_position.y + _size.y <= b._position.y)
return false;
if (includeBorders)
{
if (_position.x > b._position.x + b._size.x)
{
return false;
}
if (_position.x + _size.x < b._position.x)
{
return false;
}
if (_position.y > b._position.y + b._size.y)
{
return false;
}
if (_position.y + _size.y < b._position.y)
{
return false;
}
}
else
{
if (_position.x >= b._position.x + b._size.x)
{
return false;
}
if (_position.x + _size.x <= b._position.x)
{
return false;
}
if (_position.y >= b._position.y + b._size.y)
{
return false;
}
if (_position.y + _size.y <= b._position.y)
{
return false;
}
}
return true;
}
/// <summary>
/// Returns a larger Rect2 that contains this Rect2 and `b`.
/// </summary>
/// <param name="b">The other rect.</param>
/// <returns>The merged rect.</returns>
public Rect2 Merge(Rect2 b)
{
Rect2 newRect;
@ -179,27 +308,53 @@ namespace Godot
newRect._size.x = Mathf.Max(b._position.x + b._size.x, _position.x + _size.x);
newRect._size.y = Mathf.Max(b._position.y + b._size.y, _position.y + _size.y);
newRect._size = newRect._size - newRect._position; // Make relative again
newRect._size -= newRect._position; // Make relative again
return newRect;
}
// Constructors
/// <summary>
/// Constructs a Rect2 from a position and size.
/// </summary>
/// <param name="position">The position.</param>
/// <param name="size">The size.</param>
public Rect2(Vector2 position, Vector2 size)
{
_position = position;
_size = size;
}
/// <summary>
/// Constructs a Rect2 from a position, width, and height.
/// </summary>
/// <param name="position">The position.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
public Rect2(Vector2 position, real_t width, real_t height)
{
_position = position;
_size = new Vector2(width, height);
}
/// <summary>
/// Constructs a Rect2 from x, y, and size.
/// </summary>
/// <param name="x">The position's X coordinate.</param>
/// <param name="y">The position's Y coordinate.</param>
/// <param name="size">The size.</param>
public Rect2(real_t x, real_t y, Vector2 size)
{
_position = new Vector2(x, y);
_size = size;
}
/// <summary>
/// Constructs a Rect2 from x, y, width, and height.
/// </summary>
/// <param name="x">The position's X coordinate.</param>
/// <param name="y">The position's Y coordinate.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
public Rect2(real_t x, real_t y, real_t width, real_t height)
{
_position = new Vector2(x, y);
@ -231,6 +386,12 @@ namespace Godot
return _position.Equals(other._position) && _size.Equals(other._size);
}
/// <summary>
/// Returns true if this rect and `other` are approximately equal, by running
/// <see cref="Vector2.IsEqualApprox(Vector2)"/> on each component.
/// </summary>
/// <param name="other">The other rect to compare.</param>
/// <returns>Whether or not the rects are approximately equal.</returns>
public bool IsEqualApprox(Rect2 other)
{
return _position.IsEqualApprox(other._position) && _size.IsEqualApprox(other.Size);

142
modules/mono/glue/GodotSharp/GodotSharp/Core/Transform.cs
View file

@ -8,11 +8,28 @@ using real_t = System.Single;
namespace Godot
{
/// <summary>
/// 3×4 matrix (3 rows, 4 columns) used for 3D linear transformations.
/// It can represent transformations such as translation, rotation, or scaling.
/// It consists of a <see cref="Basis"/> (first 3 columns) and a
/// <see cref="Vector3"/> for the origin (last column).
///
/// For more information, read this documentation article:
/// https://docs.godotengine.org/en/latest/tutorials/math/matrices_and_transforms.html
/// </summary>
[Serializable]
[StructLayout(LayoutKind.Sequential)]
public struct Transform : IEquatable<Transform>
{
/// <summary>
/// The <see cref="Basis"/> of this transform. Contains the X, Y, and Z basis
/// vectors (columns 0 to 2) and is responsible for rotation and scale.
/// </summary>
public Basis basis;
/// <summary>
/// The origin vector (column 3, the fourth column). Equivalent to array index `[3]`.
/// </summary>
public Vector3 origin;
/// <summary>
@ -85,13 +102,24 @@ namespace Godot
}
}
/// <summary>
/// Returns the inverse of the transform, under the assumption that
/// the transformation is composed of rotation, scaling, and translation.
/// </summary>
/// <returns>The inverse transformation matrix.</returns>
public Transform AffineInverse()
{
Basis basisInv = basis.Inverse();
return new Transform(basisInv, basisInv.Xform(-origin));
}
public Transform InterpolateWith(Transform transform, real_t c)
/// <summary>
/// Interpolates this transform to the other `transform` by `weight`.
/// </summary>
/// <param name="transform">The other transform.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The interpolated transform.</returns>
public Transform InterpolateWith(Transform transform, real_t weight)
{
/* not sure if very "efficient" but good enough? */
@ -104,18 +132,37 @@ namespace Godot
Vector3 destinationLocation = transform.origin;
var interpolated = new Transform();
interpolated.basis.SetQuatScale(sourceRotation.Slerp(destinationRotation, c).Normalized(), sourceScale.LinearInterpolate(destinationScale, c));
interpolated.origin = sourceLocation.LinearInterpolate(destinationLocation, c);
interpolated.basis.SetQuatScale(sourceRotation.Slerp(destinationRotation, weight).Normalized(), sourceScale.LinearInterpolate(destinationScale, weight));
interpolated.origin = sourceLocation.LinearInterpolate(destinationLocation, weight);
return interpolated;
}
/// <summary>
/// Returns the inverse of the transform, under the assumption that
/// the transformation is composed of rotation and translation
/// (no scaling, use <see cref="AffineInverse"/> for transforms with scaling).
/// </summary>
/// <returns>The inverse matrix.</returns>
public Transform Inverse()
{
Basis basisTr = basis.Transposed();
return new Transform(basisTr, basisTr.Xform(-origin));
}
/// <summary>
/// Returns a copy of the transform rotated such that its
/// -Z axis (forward) points towards the target position.
///
/// The transform will first be rotated around the given up vector,
/// and then fully aligned to the target by a further rotation around
/// an axis perpendicular to both the target and up vectors.
///
/// Operations take place in global space.
/// </summary>
/// <param name="target">The object to look at.</param>
/// <param name="up">The relative up direction</param>
/// <returns>The resulting transform.</returns>
public Transform LookingAt(Vector3 target, Vector3 up)
{
var t = this;
@ -123,16 +170,33 @@ namespace Godot
return t;
}
/// <summary>
/// Returns the transform with the basis orthogonal (90 degrees),
/// and normalized axis vectors (scale of 1 or -1).
/// </summary>
/// <returns>The orthonormalized transform.</returns>
public Transform Orthonormalized()
{
return new Transform(basis.Orthonormalized(), origin);
}
/// <summary>
/// Rotates the transform around the given `axis` by `phi` (in radians),
/// using matrix multiplication. The axis must be a normalized vector.
/// </summary>
/// <param name="axis">The axis to rotate around. Must be normalized.</param>
/// <param name="phi">The angle to rotate, in radians.</param>
/// <returns>The rotated transformation matrix.</returns>
public Transform Rotated(Vector3 axis, real_t phi)
{
return new Transform(new Basis(axis, phi), new Vector3()) * this;
}
/// <summary>
/// Scales the transform by the given 3D scaling factor, using matrix multiplication.
/// </summary>
/// <param name="scale">The scale to introduce.</param>
/// <returns>The scaled transformation matrix.</returns>
public Transform Scaled(Vector3 scale)
{
return new Transform(basis.Scaled(scale), origin * scale);
@ -161,16 +225,30 @@ namespace Godot
origin = eye;
}
public Transform Translated(Vector3 ofs)
/// <summary>
/// Translates the transform by the given `offset`,
/// relative to the transform's basis vectors.
///
/// Unlike <see cref="Rotated"/> and <see cref="Scaled"/>,
/// this does not use matrix multiplication.
/// </summary>
/// <param name="offset">The offset to translate by.</param>
/// <returns>The translated matrix.</returns>
public Transform Translated(Vector3 offset)
{
return new Transform(basis, new Vector3
(
origin[0] += basis.Row0.Dot(ofs),
origin[1] += basis.Row1.Dot(ofs),
origin[2] += basis.Row2.Dot(ofs)
origin[0] += basis.Row0.Dot(offset),
origin[1] += basis.Row1.Dot(offset),
origin[2] += basis.Row2.Dot(offset)
));
}
/// <summary>
/// Returns a vector transformed (multiplied) by this transformation matrix.
/// </summary>
/// <param name="v">A vector to transform.</param>
/// <returns>The transfomed vector.</returns>
public Vector3 Xform(Vector3 v)
{
return new Vector3
@ -181,6 +259,14 @@ namespace Godot
);
}
/// <summary>
/// Returns a vector transformed (multiplied) by the transposed transformation matrix.
///
/// Note: This results in a multiplication by the inverse of the
/// transformation matrix only if it represents a rotation-reflection.
/// </summary>
/// <param name="v">A vector to inversely transform.</param>
/// <returns>The inversely transfomed vector.</returns>
public Vector3 XformInv(Vector3 v)
{
Vector3 vInv = v - origin;
@ -199,24 +285,58 @@ namespace Godot
private static readonly Transform _flipY = new Transform(new Basis(1, 0, 0, 0, -1, 0, 0, 0, 1), Vector3.Zero);
private static readonly Transform _flipZ = new Transform(new Basis(1, 0, 0, 0, 1, 0, 0, 0, -1), Vector3.Zero);
/// <summary>
/// The identity transform, with no translation, rotation, or scaling applied.
/// This is used as a replacement for `Transform()` in GDScript.
/// Do not use `new Transform()` with no arguments in C#, because it sets all values to zero.
/// </summary>
/// <value>Equivalent to `new Transform(Vector3.Right, Vector3.Up, Vector3.Back, Vector3.Zero)`.</value>
public static Transform Identity { get { return _identity; } }
/// <summary>
/// The transform that will flip something along the X axis.
/// </summary>
/// <value>Equivalent to `new Transform(Vector3.Left, Vector3.Up, Vector3.Back, Vector3.Zero)`.</value>
public static Transform FlipX { get { return _flipX; } }
/// <summary>
/// The transform that will flip something along the Y axis.
/// </summary>
/// <value>Equivalent to `new Transform(Vector3.Right, Vector3.Down, Vector3.Back, Vector3.Zero)`.</value>
public static Transform FlipY { get { return _flipY; } }
/// <summary>
/// The transform that will flip something along the Z axis.
/// </summary>
/// <value>Equivalent to `new Transform(Vector3.Right, Vector3.Up, Vector3.Forward, Vector3.Zero)`.</value>
public static Transform FlipZ { get { return _flipZ; } }
// Constructors
/// <summary>
/// Constructs a transformation matrix from 4 vectors (matrix columns).
/// </summary>
/// <param name="column0">The X vector, or column index 0.</param>
/// <param name="column1">The Y vector, or column index 1.</param>
/// <param name="column2">The Z vector, or column index 2.</param>
/// <param name="origin">The origin vector, or column index 3.</param>
public Transform(Vector3 column0, Vector3 column1, Vector3 column2, Vector3 origin)
{
basis = new Basis(column0, column1, column2);
this.origin = origin;
}
/// <summary>
/// Constructs a transformation matrix from the given quaternion and origin vector.
/// </summary>
/// <param name="quat">The <see cref="Godot.Quat"/> to create the basis from.</param>
/// <param name="origin">The origin vector, or column index 3.</param>
public Transform(Quat quat, Vector3 origin)
{
basis = new Basis(quat);
this.origin = origin;
}
/// <summary>
/// Constructs a transformation matrix from the given basis and origin vector.
/// </summary>
/// <param name="basis">The <see cref="Godot.Basis"/> to create the basis from.</param>
/// <param name="origin">The origin vector, or column index 3.</param>
public Transform(Basis basis, Vector3 origin)
{
this.basis = basis;
@ -255,6 +375,12 @@ namespace Godot
return basis.Equals(other.basis) && origin.Equals(other.origin);
}
/// <summary>
/// Returns true if this transform and `other` are approximately equal, by running
/// <see cref="Vector3.IsEqualApprox(Vector3)"/> on each component.
/// </summary>
/// <param name="other">The other transform to compare.</param>
/// <returns>Whether or not the matrices are approximately equal.</returns>
public bool IsEqualApprox(Transform other)
{
return basis.IsEqualApprox(other.basis) && origin.IsEqualApprox(other.origin);

180
modules/mono/glue/GodotSharp/GodotSharp/Core/Transform2D.cs
View file

@ -8,25 +8,44 @@ using real_t = System.Single;
namespace Godot
{
/// <summary>
/// 2×3 matrix (2 rows, 3 columns) used for 2D linear transformations.
/// It can represent transformations such as translation, rotation, or scaling.
/// It consists of a three <see cref="Vector2"/> values: x, y, and the origin.
///
/// For more information, read this documentation article:
/// https://docs.godotengine.org/en/latest/tutorials/math/matrices_and_transforms.html
/// </summary>
[Serializable]
[StructLayout(LayoutKind.Sequential)]
public struct Transform2D : IEquatable<Transform2D>
{
/// <summary>
/// The basis matrix's X vector (column 0). Equivalent to array index `[0]`.
/// </summary>
/// <value></value>
public Vector2 x;
/// <summary>
/// The basis matrix's Y vector (column 1). Equivalent to array index `[1]`.
/// </summary>
public Vector2 y;
/// <summary>
/// The origin vector (column 2, the third column). Equivalent to array index `[2]`.
/// The origin vector represents translation.
/// </summary>
public Vector2 origin;
/// <summary>
/// The rotation of this transformation matrix.
/// </summary>
/// <value>Getting is equivalent to calling <see cref="Mathf.Atan2(real_t, real_t)"/> with the values of <see cref="x"/>.</value>
public real_t Rotation
{
get
{
real_t det = BasisDeterminant();
Transform2D t = Orthonormalized();
if (det < 0)
{
t.ScaleBasis(new Vector2(1, -1));
}
return Mathf.Atan2(t.x.y, t.x.x);
return Mathf.Atan2(x.y, x.x);
}
set
{
@ -38,6 +57,10 @@ namespace Godot
}
}
/// <summary>
/// The scale of this transformation matrix.
/// </summary>
/// <value>Equivalent to the lengths of each column vector, but Y is negative if the determinant is negative.</value>
public Vector2 Scale
{
get
@ -47,8 +70,7 @@ namespace Godot
}
set
{
x = x.Normalized();
y = y.Normalized();
value /= Scale; // Value becomes what's called "delta_scale" in core.
x *= value.x;
y *= value.y;
}
@ -112,6 +134,11 @@ namespace Godot
}
}
/// <summary>
/// Returns the inverse of the transform, under the assumption that
/// the transformation is composed of rotation, scaling, and translation.
/// </summary>
/// <returns>The inverse transformation matrix.</returns>
public Transform2D AffineInverse()
{
real_t det = BasisDeterminant();
@ -135,28 +162,58 @@ namespace Godot
return inv;
}
/// <summary>
/// Returns the determinant of the basis matrix. If the basis is
/// uniformly scaled, its determinant is the square of the scale.
///
/// A negative determinant means the Y scale is negative.
/// A zero determinant means the basis isn't invertible,
/// and is usually considered invalid.
/// </summary>
/// <returns>The determinant of the basis matrix.</returns>
private real_t BasisDeterminant()
{
return x.x * y.y - x.y * y.x;
}
/// <summary>
/// Returns a vector transformed (multiplied) by the basis matrix.
/// This method does not account for translation (the origin vector).
/// </summary>
/// <param name="v">A vector to transform.</param>
/// <returns>The transfomed vector.</returns>
public Vector2 BasisXform(Vector2 v)
{
return new Vector2(Tdotx(v), Tdoty(v));
}
/// <summary>
/// Returns a vector transformed (multiplied) by the inverse basis matrix.
/// This method does not account for translation (the origin vector).
///
/// Note: This results in a multiplication by the inverse of the
/// basis matrix only if it represents a rotation-reflection.
/// </summary>
/// <param name="v">A vector to inversely transform.</param>
/// <returns>The inversely transfomed vector.</returns>
public Vector2 BasisXformInv(Vector2 v)
{
return new Vector2(x.Dot(v), y.Dot(v));
}
public Transform2D InterpolateWith(Transform2D m, real_t c)
/// <summary>
/// Interpolates this transform to the other `transform` by `weight`.
/// </summary>
/// <param name="transform">The other transform.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The interpolated transform.</returns>
public Transform2D InterpolateWith(Transform2D transform, real_t weight)
{
real_t r1 = Rotation;
real_t r2 = m.Rotation;
real_t r2 = transform.Rotation;
Vector2 s1 = Scale;
Vector2 s2 = m.Scale;
Vector2 s2 = transform.Scale;
// Slerp rotation
var v1 = new Vector2(Mathf.Cos(r1), Mathf.Sin(r1));
@ -172,28 +229,34 @@ namespace Godot
if (dot > 0.9995f)
{
// Linearly interpolate to avoid numerical precision issues
v = v1.LinearInterpolate(v2, c).Normalized();
v = v1.LinearInterpolate(v2, weight).Normalized();
}
else
{
real_t angle = c * Mathf.Acos(dot);
real_t angle = weight * Mathf.Acos(dot);
Vector2 v3 = (v2 - v1 * dot).Normalized();
v = v1 * Mathf.Cos(angle) + v3 * Mathf.Sin(angle);
}
// Extract parameters
Vector2 p1 = origin;
Vector2 p2 = m.origin;
Vector2 p2 = transform.origin;
// Construct matrix
var res = new Transform2D(Mathf.Atan2(v.y, v.x), p1.LinearInterpolate(p2, c));
Vector2 scale = s1.LinearInterpolate(s2, c);
var res = new Transform2D(Mathf.Atan2(v.y, v.x), p1.LinearInterpolate(p2, weight));
Vector2 scale = s1.LinearInterpolate(s2, weight);
res.x *= scale;
res.y *= scale;
return res;
}
/// <summary>
/// Returns the inverse of the transform, under the assumption that
/// the transformation is composed of rotation and translation
/// (no scaling, use <see cref="AffineInverse"/> for transforms with scaling).
/// </summary>
/// <returns>The inverse matrix.</returns>
public Transform2D Inverse()
{
var inv = this;
@ -208,6 +271,11 @@ namespace Godot
return inv;
}
/// <summary>
/// Returns the transform with the basis orthogonal (90 degrees),
/// and normalized axis vectors (scale of 1 or -1).
/// </summary>
/// <returns>The orthonormalized transform.</returns>
public Transform2D Orthonormalized()
{
var on = this;
@ -225,11 +293,21 @@ namespace Godot
return on;
}
/// <summary>
/// Rotates the transform by `phi` (in radians), using matrix multiplication.
/// </summary>
/// <param name="phi">The angle to rotate, in radians.</param>
/// <returns>The rotated transformation matrix.</returns>
public Transform2D Rotated(real_t phi)
{
return this * new Transform2D(phi, new Vector2());
}
/// <summary>
/// Scales the transform by the given scaling factor, using matrix multiplication.
/// </summary>
/// <param name="scale">The scale to introduce.</param>
/// <returns>The scaled transformation matrix.</returns>
public Transform2D Scaled(Vector2 scale)
{
var copy = this;
@ -257,6 +335,15 @@ namespace Godot
return this[0, 1] * with[0] + this[1, 1] * with[1];
}
/// <summary>
/// Translates the transform by the given `offset`,
/// relative to the transform's basis vectors.
///
/// Unlike <see cref="Rotated"/> and <see cref="Scaled"/>,
/// this does not use matrix multiplication.
/// </summary>
/// <param name="offset">The offset to translate by.</param>
/// <returns>The translated matrix.</returns>
public Transform2D Translated(Vector2 offset)
{
var copy = this;
@ -264,11 +351,21 @@ namespace Godot
return copy;
}
/// <summary>
/// Returns a vector transformed (multiplied) by this transformation matrix.
/// </summary>
/// <param name="v">A vector to transform.</param>
/// <returns>The transfomed vector.</returns>
public Vector2 Xform(Vector2 v)
{
return new Vector2(Tdotx(v), Tdoty(v)) + origin;
}
/// <summary>
/// Returns a vector transformed (multiplied) by the inverse transformation matrix.
/// </summary>
/// <param name="v">A vector to inversely transform.</param>
/// <returns>The inversely transfomed vector.</returns>
public Vector2 XformInv(Vector2 v)
{
Vector2 vInv = v - origin;
@ -280,11 +377,30 @@ namespace Godot
private static readonly Transform2D _flipX = new Transform2D(-1, 0, 0, 1, 0, 0);
private static readonly Transform2D _flipY = new Transform2D(1, 0, 0, -1, 0, 0);
public static Transform2D Identity => _identity;
public static Transform2D FlipX => _flipX;
public static Transform2D FlipY => _flipY;
/// <summary>
/// The identity transform, with no translation, rotation, or scaling applied.
/// This is used as a replacement for `Transform2D()` in GDScript.
/// Do not use `new Transform2D()` with no arguments in C#, because it sets all values to zero.
/// </summary>
/// <value>Equivalent to `new Transform2D(Vector2.Right, Vector2.Down, Vector2.Zero)`.</value>
public static Transform2D Identity { get { return _identity; } }
/// <summary>
/// The transform that will flip something along the X axis.
/// </summary>
/// <value>Equivalent to `new Transform2D(Vector2.Left, Vector2.Down, Vector2.Zero)`.</value>
public static Transform2D FlipX { get { return _flipX; } }
/// <summary>
/// The transform that will flip something along the Y axis.
/// </summary>
/// <value>Equivalent to `new Transform2D(Vector2.Right, Vector2.Up, Vector2.Zero)`.</value>
public static Transform2D FlipY { get { return _flipY; } }
// Constructors
/// <summary>
/// Constructs a transformation matrix from 3 vectors (matrix columns).
/// </summary>
/// <param name="xAxis">The X vector, or column index 0.</param>
/// <param name="yAxis">The Y vector, or column index 1.</param>
/// <param name="originPos">The origin vector, or column index 2.</param>
public Transform2D(Vector2 xAxis, Vector2 yAxis, Vector2 originPos)
{
x = xAxis;
@ -292,7 +408,16 @@ namespace Godot
origin = originPos;
}
// Arguments are named such that xy is equal to calling x.y
/// <summary>
/// Constructs a transformation matrix from the given components.
/// Arguments are named such that xy is equal to calling x.y
/// </summary>
/// <param name="xx">The X component of the X column vector, accessed via `t.x.x` or `[0][0]`</param>
/// <param name="xy">The Y component of the X column vector, accessed via `t.x.y` or `[0][1]`</param>
/// <param name="yx">The X component of the Y column vector, accessed via `t.y.x` or `[1][0]`</param>
/// <param name="yy">The Y component of the Y column vector, accessed via `t.y.y` or `[1][1]`</param>
/// <param name="ox">The X component of the origin vector, accessed via `t.origin.x` or `[2][0]`</param>
/// <param name="oy">The Y component of the origin vector, accessed via `t.origin.y` or `[2][1]`</param>
public Transform2D(real_t xx, real_t xy, real_t yx, real_t yy, real_t ox, real_t oy)
{
x = new Vector2(xx, xy);
@ -300,6 +425,11 @@ namespace Godot
origin = new Vector2(ox, oy);
}
/// <summary>
/// Constructs a transformation matrix from a rotation value and origin vector.
/// </summary>
/// <param name="rot">The rotation of the new transform, in radians.</param>
/// <param name="pos">The origin vector, or column index 2.</param>
public Transform2D(real_t rot, Vector2 pos)
{
x.x = y.y = Mathf.Cos(rot);
@ -345,6 +475,12 @@ namespace Godot
return x.Equals(other.x) && y.Equals(other.y) && origin.Equals(other.origin);
}
/// <summary>
/// Returns true if this transform and `other` are approximately equal, by running
/// <see cref="Vector2.IsEqualApprox(Vector2)"/> on each component.
/// </summary>
/// <param name="other">The other transform to compare.</param>
/// <returns>Whether or not the matrices are approximately equal.</returns>
public bool IsEqualApprox(Transform2D other)
{
return x.IsEqualApprox(other.x) && y.IsEqualApprox(other.y) && origin.IsEqualApprox(other.origin);

371
modules/mono/glue/GodotSharp/GodotSharp/Core/Vector2.cs
View file

@ -21,15 +21,29 @@ namespace Godot
[StructLayout(LayoutKind.Sequential)]
public struct Vector2 : IEquatable<Vector2>
{
/// <summary>
/// Enumerated index values for the axes.
/// Returned by <see cref="MaxAxis"/> and <see cref="MinAxis"/>.
/// </summary>
public enum Axis
{
X = 0,
Y
}
/// <summary>
/// The vector's X component. Also accessible by using the index position `[0]`.
/// </summary>
public real_t x;
/// <summary>
/// The vector's Y component. Also accessible by using the index position `[1]`.
/// </summary>
public real_t y;
/// <summary>
/// Access vector components using their index.
/// </summary>
/// <value>`[0]` is equivalent to `.x`, `[1]` is equivalent to `.y`.</value>
public real_t this[int index]
{
get
@ -76,46 +90,80 @@ namespace Godot
}
}
public real_t Cross(Vector2 b)
{
return x * b.y - y * b.x;
}
/// <summary>
/// Returns a new vector with all components in absolute values (i.e. positive).
/// </summary>
/// <returns>A vector with <see cref="Mathf.Abs(real_t)"/> called on each component.</returns>
public Vector2 Abs()
{
return new Vector2(Mathf.Abs(x), Mathf.Abs(y));
}
/// <summary>
/// Returns this vector's angle with respect to the X axis, or (1, 0) vector, in radians.
///
/// Equivalent to the result of <see cref="Mathf.Atan2(real_t, real_t)"/> when
/// called with the vector's `y` and `x` as parameters: `Mathf.Atan2(v.y, v.x)`.
/// </summary>
/// <returns>The angle of this vector, in radians.</returns>
public real_t Angle()
{
return Mathf.Atan2(y, x);
}
/// <summary>
/// Returns the angle to the given vector, in radians.
/// </summary>
/// <param name="to">The other vector to compare this vector to.</param>
/// <returns>The angle between the two vectors, in radians.</returns>
public real_t AngleTo(Vector2 to)
{
return Mathf.Atan2(Cross(to), Dot(to));
}
/// <summary>
/// Returns the angle between the line connecting the two points and the X axis, in radians.
/// </summary>
/// <param name="to">The other vector to compare this vector to.</param>
/// <returns>The angle between the two vectors, in radians.</returns>
public real_t AngleToPoint(Vector2 to)
{
return Mathf.Atan2(y - to.y, x - to.x);
}
/// <summary>
/// Returns the aspect ratio of this vector, the ratio of `x` to `y`.
/// </summary>
/// <returns>The `x` component divided by the `y` component.</returns>
public real_t Aspect()
{
return x / y;
}
public Vector2 Bounce(Vector2 n)
/// <summary>
/// Returns the vector "bounced off" from a plane defined by the given normal.
/// </summary>
/// <param name="normal">The normal vector defining the plane to bounce off. Must be normalized.</param>
/// <returns>The bounced vector.</returns>
public Vector2 Bounce(Vector2 normal)
{
return -Reflect(n);
return -Reflect(normal);
}
/// <summary>
/// Returns a new vector with all components rounded up (towards positive infinity).
/// </summary>
/// <returns>A vector with <see cref="Mathf.Ceil"/> called on each component.</returns>
public Vector2 Ceil()
{
return new Vector2(Mathf.Ceil(x), Mathf.Ceil(y));
}
/// <summary>
/// Returns the vector with a maximum length by limiting its length to `length`.
/// </summary>
/// <param name="length">The length to limit to.</param>
/// <returns>The vector with its length limited.</returns>
public Vector2 Clamped(real_t length)
{
var v = this;
@ -130,12 +178,30 @@ namespace Godot
return v;
}
/// <summary>
/// Returns the cross product of this vector and `b`.
/// </summary>
/// <param name="b">The other vector.</param>
/// <returns>The cross product value.</returns>
public real_t Cross(Vector2 b)
{
return x * b.y - y * b.x;
}
/// <summary>
/// Performs a cubic interpolation between vectors `preA`, this vector, `b`, and `postB`, by the given amount `t`.
/// </summary>
/// <param name="b">The destination vector.</param>
/// <param name="preA">A vector before this vector.</param>
/// <param name="postB">A vector after `b`.</param>
/// <param name="t">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The interpolated vector.</returns>
public Vector2 CubicInterpolate(Vector2 b, Vector2 preA, Vector2 postB, real_t t)
{
var p0 = preA;
var p1 = this;
var p2 = b;
var p3 = postB;
Vector2 p0 = preA;
Vector2 p1 = this;
Vector2 p2 = b;
Vector2 p3 = postB;
real_t t2 = t * t;
real_t t3 = t2 * t;
@ -146,56 +212,153 @@ namespace Godot
(-p0 + 3.0f * p1 - 3.0f * p2 + p3) * t3);
}
/// <summary>
/// Returns the normalized vector pointing from this vector to `b`.
/// </summary>
/// <param name="b">The other vector to point towards.</param>
/// <returns>The direction from this vector to `b`.</returns>
public Vector2 DirectionTo(Vector2 b)
{
return new Vector2(b.x - x, b.y - y).Normalized();
}
/// <summary>
/// Returns the squared distance between this vector and `to`.
/// This method runs faster than <see cref="DistanceTo"/>, so prefer it if
/// you need to compare vectors or need the squared distance for some formula.
/// </summary>
/// <param name="to">The other vector to use.</param>
/// <returns>The squared distance between the two vectors.</returns>
public real_t DistanceSquaredTo(Vector2 to)
{
return (x - to.x) * (x - to.x) + (y - to.y) * (y - to.y);
}
/// <summary>
/// Returns the distance between this vector and `to`.
/// </summary>
/// <param name="to">The other vector to use.</param>
/// <returns>The distance between the two vectors.</returns>
public real_t DistanceTo(Vector2 to)
{
return Mathf.Sqrt((x - to.x) * (x - to.x) + (y - to.y) * (y - to.y));
}
/// <summary>
/// Returns the dot product of this vector and `with`.
/// </summary>
/// <param name="with">The other vector to use.</param>
/// <returns>The dot product of the two vectors.</returns>
public real_t Dot(Vector2 with)
{
return x * with.x + y * with.y;
}
/// <summary>
/// Returns a new vector with all components rounded down (towards negative infinity).
/// </summary>
/// <returns>A vector with <see cref="Mathf.Floor"/> called on each component.</returns>
public Vector2 Floor()
{
return new Vector2(Mathf.Floor(x), Mathf.Floor(y));
}
/// <summary>
/// Returns the inverse of this vector. This is the same as `new Vector2(1 / v.x, 1 / v.y)`.
/// </summary>
/// <returns>The inverse of this vector.</returns>
public Vector2 Inverse()
{
return new Vector2(1 / x, 1 / y);
}
/// <summary>
/// Returns true if the vector is normalized, and false otherwise.
/// </summary>
/// <returns>A bool indicating whether or not the vector is normalized.</returns>
public bool IsNormalized()
{
return Mathf.Abs(LengthSquared() - 1.0f) < Mathf.Epsilon;
}
/// <summary>
/// Returns the length (magnitude) of this vector.
/// </summary>
/// <returns>The length of this vector.</returns>
public real_t Length()
{
return Mathf.Sqrt(x * x + y * y);
}
/// <summary>
/// Returns the squared length (squared magnitude) of this vector.
/// This method runs faster than <see cref="Length"/>, so prefer it if
/// you need to compare vectors or need the squared length for some formula.
/// </summary>
/// <returns>The squared length of this vector.</returns>
public real_t LengthSquared()
{
return x * x + y * y;
}
public Vector2 LinearInterpolate(Vector2 b, real_t t)
/// <summary>
/// Returns the result of the linear interpolation between
/// this vector and `to` by amount `weight`.
/// </summary>
/// <param name="to">The destination vector for interpolation.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting vector of the interpolation.</returns>
public Vector2 LinearInterpolate(Vector2 to, real_t weight)
{
var res = this;
res.x += t * (b.x - x);
res.y += t * (b.y - y);
return res;
return new Vector2
(
Mathf.Lerp(x, to.x, weight),
Mathf.Lerp(y, to.y, weight)
);
}
/// <summary>
/// Returns the result of the linear interpolation between
/// this vector and `to` by the vector amount `weight`.
/// </summary>
/// <param name="to">The destination vector for interpolation.</param>
/// <param name="weight">A vector with components on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting vector of the interpolation.</returns>
public Vector2 LinearInterpolate(Vector2 to, Vector2 weight)
{
return new Vector2
(
Mathf.Lerp(x, to.x, weight.x),
Mathf.Lerp(y, to.y, weight.y)
);
}
/// <summary>
/// Returns the axis of the vector's largest value. See <see cref="Axis"/>.
/// If both components are equal, this method returns <see cref="Axis.X"/>.
/// </summary>
/// <returns>The index of the largest axis.</returns>
public Axis MaxAxis()
{
return x < y ? Axis.Y : Axis.X;
}
/// <summary>
/// Returns the axis of the vector's smallest value. See <see cref="Axis"/>.
/// If both components are equal, this method returns <see cref="Axis.Y"/>.
/// </summary>
/// <returns>The index of the smallest axis.</returns>
public Axis MinAxis()
{
return x < y ? Axis.X : Axis.Y;
}
/// <summary>
/// Moves this vector toward `to` by the fixed `delta` amount.
/// </summary>
/// <param name="to">The vector to move towards.</param>
/// <param name="delta">The amount to move towards by.</param>
/// <returns>The resulting vector.</returns>
public Vector2 MoveToward(Vector2 to, real_t delta)
{
var v = this;
@ -204,6 +367,10 @@ namespace Godot
return len <= delta || len < Mathf.Epsilon ? to : v + vd / len * delta;
}
/// <summary>
/// Returns the vector scaled to unit length. Equivalent to `v / v.Length()`.
/// </summary>
/// <returns>A normalized version of the vector.</returns>
public Vector2 Normalized()
{
var v = this;
@ -211,6 +378,21 @@ namespace Godot
return v;
}
/// <summary>
/// Returns a perpendicular vector rotated 90 degrees counter-clockwise
/// compared to the original, with the same length.
/// </summary>
/// <returns>The perpendicular vector.</returns>
public Vector2 Perpendicular()
{
return new Vector2(y, -x);
}
/// <summary>
/// Returns a vector composed of the <see cref="Mathf.PosMod(real_t, real_t)"/> of this vector's components and `mod`.
/// </summary>
/// <param name="mod">A value representing the divisor of the operation.</param>
/// <returns>A vector with each component <see cref="Mathf.PosMod(real_t, real_t)"/> by `mod`.</returns>
public Vector2 PosMod(real_t mod)
{
Vector2 v;
@ -219,6 +401,11 @@ namespace Godot
return v;
}
/// <summary>
/// Returns a vector composed of the <see cref="Mathf.PosMod(real_t, real_t)"/> of this vector's components and `modv`'s components.
/// </summary>
/// <param name="modv">A vector representing the divisors of the operation.</param>
/// <returns>A vector with each component <see cref="Mathf.PosMod(real_t, real_t)"/> by `modv`'s components.</returns>
public Vector2 PosMod(Vector2 modv)
{
Vector2 v;
@ -227,22 +414,48 @@ namespace Godot
return v;
}
/// <summary>
/// Returns this vector projected onto another vector.
/// </summary>
/// <param name="onNormal">The vector to project onto.</param>
/// <returns>The projected vector.</returns>
public Vector2 Project(Vector2 onNormal)
{
return onNormal * (Dot(onNormal) / onNormal.LengthSquared());
}
public Vector2 Reflect(Vector2 n)
/// <summary>
/// Returns this vector reflected from a plane defined by the given `normal`.
/// </summary>
/// <param name="normal">The normal vector defining the plane to reflect from. Must be normalized.</param>
/// <returns>The reflected vector.</returns>
public Vector2 Reflect(Vector2 normal)
{
return 2.0f * n * Dot(n) - this;
#if DEBUG
if (!normal.IsNormalized())
{
throw new ArgumentException("Argument is not normalized", nameof(normal));
}
#endif
return 2 * Dot(normal) * normal - this;
}
/// <summary>
/// Rotates this vector by `phi` radians.
/// </summary>
/// <param name="phi">The angle to rotate by, in radians.</param>
/// <returns>The rotated vector.</returns>
public Vector2 Rotated(real_t phi)
{
real_t rads = Angle() + phi;
return new Vector2(Mathf.Cos(rads), Mathf.Sin(rads)) * Length();
}
/// <summary>
/// Returns this vector with all components rounded to the nearest integer,
/// with halfway cases rounded towards the nearest multiple of two.
/// </summary>
/// <returns>The rounded vector.</returns>
public Vector2 Round()
{
return new Vector2(Mathf.Round(x), Mathf.Round(y));
@ -261,6 +474,12 @@ namespace Godot
y = v.y;
}
/// <summary>
/// Returns a vector with each component set to one or negative one, depending
/// on the signs of this vector's components, or zero if the component is zero,
/// by calling <see cref="Mathf.Sign(real_t)"/> on each component.
/// </summary>
/// <returns>A vector with all components as either `1`, `-1`, or `0`.</returns>
public Vector2 Sign()
{
Vector2 v;
@ -269,22 +488,57 @@ namespace Godot
return v;
}
public Vector2 Slerp(Vector2 b, real_t t)
/// <summary>
/// Returns the result of the spherical linear interpolation between
/// this vector and `to` by amount `weight`.
///
/// Note: Both vectors must be normalized.
/// </summary>
/// <param name="to">The destination vector for interpolation. Must be normalized.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting vector of the interpolation.</returns>
public Vector2 Slerp(Vector2 to, real_t weight)
{
real_t theta = AngleTo(b);
return Rotated(theta * t);
#if DEBUG
if (!IsNormalized())
{
throw new InvalidOperationException("Vector2.Slerp: From vector is not normalized.");
}
if (!to.IsNormalized())
{
throw new InvalidOperationException("Vector2.Slerp: `to` is not normalized.");
}
#endif
return Rotated(AngleTo(to) * weight);
}
public Vector2 Slide(Vector2 n)
/// <summary>
/// Returns this vector slid along a plane defined by the given normal.
/// </summary>
/// <param name="normal">The normal vector defining the plane to slide on.</param>
/// <returns>The slid vector.</returns>
public Vector2 Slide(Vector2 normal)
{
return this - n * Dot(n);
return this - normal * Dot(normal);
}
public Vector2 Snapped(Vector2 by)
/// <summary>
/// Returns this vector with each component snapped to the nearest multiple of `step`.
/// This can also be used to round to an arbitrary number of decimals.
/// </summary>
/// <param name="step">A vector value representing the step size to snap to.</param>
/// <returns>The snapped vector.</returns>
public Vector2 Snapped(Vector2 step)
{
return new Vector2(Mathf.Stepify(x, by.x), Mathf.Stepify(y, by.y));
return new Vector2(Mathf.Stepify(x, step.x), Mathf.Stepify(y, step.y));
}
/// <summary>
/// Returns a perpendicular vector rotated 90 degrees counter-clockwise
/// compared to the original, with the same length.
/// Deprecated, will be replaced by <see cref="Perpendicular"/> in 4.0.
/// </summary>
/// <returns>The perpendicular vector.</returns>
public Vector2 Tangent()
{
return new Vector2(y, -x);
@ -301,22 +555,63 @@ namespace Godot
private static readonly Vector2 _right = new Vector2(1, 0);
private static readonly Vector2 _left = new Vector2(-1, 0);
/// <summary>
/// Zero vector, a vector with all components set to `0`.
/// </summary>
/// <value>Equivalent to `new Vector2(0, 0)`</value>
public static Vector2 Zero { get { return _zero; } }
/// <summary>
/// Deprecated, please use a negative sign with <see cref="One"/> instead.
/// </summary>
/// <value>Equivalent to `new Vector2(-1, -1)`</value>
public static Vector2 NegOne { get { return _negOne; } }
/// <summary>
/// One vector, a vector with all components set to `1`.
/// </summary>
/// <value>Equivalent to `new Vector2(1, 1)`</value>
public static Vector2 One { get { return _one; } }
/// <summary>
/// Infinity vector, a vector with all components set to `Mathf.Inf`.
/// </summary>
/// <value>Equivalent to `new Vector2(Mathf.Inf, Mathf.Inf)`</value>
public static Vector2 Inf { get { return _inf; } }
/// <summary>
/// Up unit vector. Y is down in 2D, so this vector points -Y.
/// </summary>
/// <value>Equivalent to `new Vector2(0, -1)`</value>
public static Vector2 Up { get { return _up; } }
/// <summary>
/// Down unit vector. Y is down in 2D, so this vector points +Y.
/// </summary>
/// <value>Equivalent to `new Vector2(0, 1)`</value>
public static Vector2 Down { get { return _down; } }
/// <summary>
/// Right unit vector. Represents the direction of right.
/// </summary>
/// <value>Equivalent to `new Vector2(1, 0)`</value>
public static Vector2 Right { get { return _right; } }
/// <summary>
/// Left unit vector. Represents the direction of left.
/// </summary>
/// <value>Equivalent to `new Vector2(-1, 0)`</value>
public static Vector2 Left { get { return _left; } }
// Constructors
/// <summary>
/// Constructs a new <see cref="Vector2"/> with the given components.
/// </summary>
/// <param name="x">The vector's X component.</param>
/// <param name="y">The vector's Y component.</param>
public Vector2(real_t x, real_t y)
{
this.x = x;
this.y = y;
}
/// <summary>
/// Constructs a new <see cref="Vector2"/> from an existing <see cref="Vector2"/>.
/// </summary>
/// <param name="v">The existing <see cref="Vector2"/>.</param>
public Vector2(Vector2 v)
{
x = v.x;
@ -365,18 +660,18 @@ namespace Godot
return left;
}
public static Vector2 operator /(Vector2 vec, real_t scale)
public static Vector2 operator /(Vector2 vec, real_t divisor)
{
vec.x /= scale;
vec.y /= scale;
vec.x /= divisor;
vec.y /= divisor;
return vec;
}
public static Vector2 operator /(Vector2 left, Vector2 right)
public static Vector2 operator /(Vector2 vec, Vector2 divisorv)
{
left.x /= right.x;
left.y /= right.y;
return left;
vec.x /= divisorv.x;
vec.y /= divisorv.y;
return vec;
}
public static Vector2 operator %(Vector2 vec, real_t divisor)
@ -458,6 +753,12 @@ namespace Godot
return x == other.x && y == other.y;
}
/// <summary>
/// Returns true if this vector and `other` are approximately equal, by running
/// <see cref="Mathf.IsEqualApprox(real_t, real_t)"/> on each component.
/// </summary>
/// <param name="other">The other vector to compare.</param>
/// <returns>Whether or not the vectors are approximately equal.</returns>
public bool IsEqualApprox(Vector2 other)
{
return Mathf.IsEqualApprox(x, other.x) && Mathf.IsEqualApprox(y, other.y);

387
modules/mono/glue/GodotSharp/GodotSharp/Core/Vector3.cs
View file

@ -21,6 +21,10 @@ namespace Godot
[StructLayout(LayoutKind.Sequential)]
public struct Vector3 : IEquatable<Vector3>
{
/// <summary>
/// Enumerated index values for the axes.
/// Returned by <see cref="MaxAxis"/> and <see cref="MinAxis"/>.
/// </summary>
public enum Axis
{
X = 0,
@ -28,10 +32,23 @@ namespace Godot
Z
}
/// <summary>
/// The vector's X component. Also accessible by using the index position `[0]`.
/// </summary>
public real_t x;
/// <summary>
/// The vector's Y component. Also accessible by using the index position `[1]`.
/// </summary>
public real_t y;
/// <summary>
/// The vector's Z component. Also accessible by using the index position `[2]`.
/// </summary>
public real_t z;
/// <summary>
/// Access vector components using their index.
/// </summary>
/// <value>`[0]` is equivalent to `.x`, `[1]` is equivalent to `.y`, `[2]` is equivalent to `.z`.</value>
public real_t this[int index]
{
get
@ -84,26 +101,49 @@ namespace Godot
}
}
/// <summary>
/// Returns a new vector with all components in absolute values (i.e. positive).
/// </summary>
/// <returns>A vector with <see cref="Mathf.Abs(real_t)"/> called on each component.</returns>
public Vector3 Abs()
{
return new Vector3(Mathf.Abs(x), Mathf.Abs(y), Mathf.Abs(z));
}
/// <summary>
/// Returns the minimum angle to the given vector, in radians.
/// </summary>
/// <param name="to">The other vector to compare this vector to.</param>
/// <returns>The angle between the two vectors, in radians.</returns>
public real_t AngleTo(Vector3 to)
{
return Mathf.Atan2(Cross(to).Length(), Dot(to));
}
public Vector3 Bounce(Vector3 n)
/// <summary>
/// Returns this vector "bounced off" from a plane defined by the given normal.
/// </summary>
/// <param name="normal">The normal vector defining the plane to bounce off. Must be normalized.</param>
/// <returns>The bounced vector.</returns>
public Vector3 Bounce(Vector3 normal)
{
return -Reflect(n);
return -Reflect(normal);
}
/// <summary>
/// Returns a new vector with all components rounded up (towards positive infinity).
/// </summary>
/// <returns>A vector with <see cref="Mathf.Ceil"/> called on each component.</returns>
public Vector3 Ceil()
{
return new Vector3(Mathf.Ceil(x), Mathf.Ceil(y), Mathf.Ceil(z));
}
/// <summary>
/// Returns the cross product of this vector and `b`.
/// </summary>
/// <param name="b">The other vector.</param>
/// <returns>The cross product vector.</returns>
public Vector3 Cross(Vector3 b)
{
return new Vector3
@ -114,12 +154,21 @@ namespace Godot
);
}
/// <summary>
/// Performs a cubic interpolation between vectors `preA`, this vector,
/// `b`, and `postB`, by the given amount `t`.
/// </summary>
/// <param name="b">The destination vector.</param>
/// <param name="preA">A vector before this vector.</param>
/// <param name="postB">A vector after `b`.</param>
/// <param name="t">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The interpolated vector.</returns>
public Vector3 CubicInterpolate(Vector3 b, Vector3 preA, Vector3 postB, real_t t)
{
var p0 = preA;
var p1 = this;
var p2 = b;
var p3 = postB;
Vector3 p0 = preA;
Vector3 p1 = this;
Vector3 p2 = b;
Vector3 p3 = postB;
real_t t2 = t * t;
real_t t3 = t2 * t;
@ -131,41 +180,79 @@ namespace Godot
);
}
/// <summary>
/// Returns the normalized vector pointing from this vector to `b`.
/// </summary>
/// <param name="b">The other vector to point towards.</param>
/// <returns>The direction from this vector to `b`.</returns>
public Vector3 DirectionTo(Vector3 b)
{
return new Vector3(b.x - x, b.y - y, b.z - z).Normalized();
}
/// <summary>
/// Returns the squared distance between this vector and `b`.
/// This method runs faster than <see cref="DistanceTo"/>, so prefer it if
/// you need to compare vectors or need the squared distance for some formula.
/// </summary>
/// <param name="b">The other vector to use.</param>
/// <returns>The squared distance between the two vectors.</returns>
public real_t DistanceSquaredTo(Vector3 b)
{
return (b - this).LengthSquared();
}
/// <summary>
/// Returns the distance between this vector and `b`.
/// </summary>
/// <param name="b">The other vector to use.</param>
/// <returns>The distance between the two vectors.</returns>
public real_t DistanceTo(Vector3 b)
{
return (b - this).Length();
}
/// <summary>
/// Returns the dot product of this vector and `b`.
/// </summary>
/// <param name="b">The other vector to use.</param>
/// <returns>The dot product of the two vectors.</returns>
public real_t Dot(Vector3 b)
{
return x * b.x + y * b.y + z * b.z;
}
/// <summary>
/// Returns a new vector with all components rounded down (towards negative infinity).
/// </summary>
/// <returns>A vector with <see cref="Mathf.Floor"/> called on each component.</returns>
public Vector3 Floor()
{
return new Vector3(Mathf.Floor(x), Mathf.Floor(y), Mathf.Floor(z));
}
/// <summary>
/// Returns the inverse of this vector. This is the same as `new Vector3(1 / v.x, 1 / v.y, 1 / v.z)`.
/// </summary>
/// <returns>The inverse of this vector.</returns>
public Vector3 Inverse()
{
return new Vector3(1.0f / x, 1.0f / y, 1.0f / z);
return new Vector3(1 / x, 1 / y, 1 / z);
}
/// <summary>
/// Returns true if the vector is normalized, and false otherwise.
/// </summary>
/// <returns>A bool indicating whether or not the vector is normalized.</returns>
public bool IsNormalized()
{
return Mathf.Abs(LengthSquared() - 1.0f) < Mathf.Epsilon;
}
/// <summary>
/// Returns the length (magnitude) of this vector.
/// </summary>
/// <returns>The length of this vector.</returns>
public real_t Length()
{
real_t x2 = x * x;
@ -175,6 +262,12 @@ namespace Godot
return Mathf.Sqrt(x2 + y2 + z2);
}
/// <summary>
/// Returns the squared length (squared magnitude) of this vector.
/// This method runs faster than <see cref="Length"/>, so prefer it if
/// you need to compare vectors or need the squared length for some formula.
/// </summary>
/// <returns>The squared length of this vector.</returns>
public real_t LengthSquared()
{
real_t x2 = x * x;
@ -184,16 +277,66 @@ namespace Godot
return x2 + y2 + z2;
}
public Vector3 LinearInterpolate(Vector3 b, real_t t)
/// <summary>
/// Returns the result of the linear interpolation between
/// this vector and `to` by amount `weight`.
/// </summary>
/// <param name="to">The destination vector for interpolation.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting vector of the interpolation.</returns>
public Vector3 LinearInterpolate(Vector3 to, real_t weight)
{
return new Vector3
(
x + t * (b.x - x),
y + t * (b.y - y),
z + t * (b.z - z)
Mathf.Lerp(x, to.x, weight),
Mathf.Lerp(y, to.y, weight),
Mathf.Lerp(z, to.z, weight)
);
}
/// <summary>
/// Returns the result of the linear interpolation between
/// this vector and `to` by the vector amount `weight`.
/// </summary>
/// <param name="to">The destination vector for interpolation.</param>
/// <param name="weight">A vector with components on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting vector of the interpolation.</returns>
public Vector3 LinearInterpolate(Vector3 to, Vector3 weight)
{
return new Vector3
(
Mathf.Lerp(x, to.x, weight.x),
Mathf.Lerp(y, to.y, weight.y),
Mathf.Lerp(z, to.z, weight.z)
);
}
/// <summary>
/// Returns the axis of the vector's largest value. See <see cref="Axis"/>.
/// If all components are equal, this method returns <see cref="Axis.X"/>.
/// </summary>
/// <returns>The index of the largest axis.</returns>
public Axis MaxAxis()
{
return x < y ? (y < z ? Axis.Z : Axis.Y) : (x < z ? Axis.Z : Axis.X);
}
/// <summary>
/// Returns the axis of the vector's smallest value. See <see cref="Axis"/>.
/// If all components are equal, this method returns <see cref="Axis.Z"/>.
/// </summary>
/// <returns>The index of the smallest axis.</returns>
public Axis MinAxis()
{
return x < y ? (x < z ? Axis.X : Axis.Z) : (y < z ? Axis.Y : Axis.Z);
}
/// <summary>
/// Moves this vector toward `to` by the fixed `delta` amount.
/// </summary>
/// <param name="to">The vector to move towards.</param>
/// <param name="delta">The amount to move towards by.</param>
/// <returns>The resulting vector.</returns>
public Vector3 MoveToward(Vector3 to, real_t delta)
{
var v = this;
@ -202,16 +345,10 @@ namespace Godot
return len <= delta || len < Mathf.Epsilon ? to : v + vd / len * delta;
}
public Axis MaxAxis()
{
return x < y ? (y < z ? Axis.Z : Axis.Y) : (x < z ? Axis.Z : Axis.X);
}
public Axis MinAxis()
{
return x < y ? (x < z ? Axis.X : Axis.Z) : (y < z ? Axis.Y : Axis.Z);
}
/// <summary>
/// Returns the vector scaled to unit length. Equivalent to `v / v.Length()`.
/// </summary>
/// <returns>A normalized version of the vector.</returns>
public Vector3 Normalized()
{
var v = this;
@ -219,6 +356,11 @@ namespace Godot
return v;
}
/// <summary>
/// Returns the outer product with `b`.
/// </summary>
/// <param name="b">The other vector.</param>
/// <returns>A <see cref="Basis"/> representing the outer product matrix.</returns>
public Basis Outer(Vector3 b)
{
return new Basis(
@ -228,6 +370,11 @@ namespace Godot
);
}
/// <summary>
/// Returns a vector composed of the <see cref="Mathf.PosMod(real_t, real_t)"/> of this vector's components and `mod`.
/// </summary>
/// <param name="mod">A value representing the divisor of the operation.</param>
/// <returns>A vector with each component <see cref="Mathf.PosMod(real_t, real_t)"/> by `mod`.</returns>
public Vector3 PosMod(real_t mod)
{
Vector3 v;
@ -237,6 +384,11 @@ namespace Godot
return v;
}
/// <summary>
/// Returns a vector composed of the <see cref="Mathf.PosMod(real_t, real_t)"/> of this vector's components and `modv`'s components.
/// </summary>
/// <param name="modv">A vector representing the divisors of the operation.</param>
/// <returns>A vector with each component <see cref="Mathf.PosMod(real_t, real_t)"/> by `modv`'s components.</returns>
public Vector3 PosMod(Vector3 modv)
{
Vector3 v;
@ -246,30 +398,60 @@ namespace Godot
return v;
}
/// <summary>
/// Returns this vector projected onto another vector `b`.
/// </summary>
/// <param name="onNormal">The vector to project onto.</param>
/// <returns>The projected vector.</returns>
public Vector3 Project(Vector3 onNormal)
{
return onNormal * (Dot(onNormal) / onNormal.LengthSquared());
}
public Vector3 Reflect(Vector3 n)
/// <summary>
/// Returns this vector reflected from a plane defined by the given `normal`.
/// </summary>
/// <param name="normal">The normal vector defining the plane to reflect from. Must be normalized.</param>
/// <returns>The reflected vector.</returns>
public Vector3 Reflect(Vector3 normal)
{
#if DEBUG
if (!n.IsNormalized())
throw new ArgumentException("Argument is not normalized", nameof(n));
if (!normal.IsNormalized())
{
throw new ArgumentException("Argument is not normalized", nameof(normal));
}
#endif
return 2.0f * n * Dot(n) - this;
return 2.0f * Dot(normal) * normal - this;
}
/// <summary>
/// Rotates this vector around a given `axis` vector by `phi` radians.
/// The `axis` vector must be a normalized vector.
/// </summary>
/// <param name="axis">The vector to rotate around. Must be normalized.</param>
/// <param name="phi">The angle to rotate by, in radians.</param>
/// <returns>The rotated vector.</returns>
public Vector3 Rotated(Vector3 axis, real_t phi)
{
#if DEBUG
if (!axis.IsNormalized())
{
throw new ArgumentException("Argument is not normalized", nameof(axis));
}
#endif
return new Basis(axis, phi).Xform(this);
}
/// <summary>
/// Returns this vector with all components rounded to the nearest integer,
/// with halfway cases rounded towards the nearest multiple of two.
/// </summary>
/// <returns>The rounded vector.</returns>
public Vector3 Round()
{
return new Vector3(Mathf.Round(x), Mathf.Round(y), Mathf.Round(z));
}
public Vector3 Rotated(Vector3 axis, real_t phi)
{
return new Basis(axis, phi).Xform(this);
}
[Obsolete("Set is deprecated. Use the Vector3(" + nameof(real_t) + ", " + nameof(real_t) + ", " + nameof(real_t) + ") constructor instead.", error: true)]
public void Set(real_t x, real_t y, real_t z)
{
@ -285,6 +467,12 @@ namespace Godot
z = v.z;
}
/// <summary>
/// Returns a vector with each component set to one or negative one, depending
/// on the signs of this vector's components, or zero if the component is zero,
/// by calling <see cref="Mathf.Sign(real_t)"/> on each component.
/// </summary>
/// <returns>A vector with all components as either `1`, `-1`, or `0`.</returns>
public Vector3 Sign()
{
Vector3 v;
@ -294,37 +482,70 @@ namespace Godot
return v;
}
public Vector3 Slerp(Vector3 b, real_t t)
/// <summary>
/// Returns the result of the spherical linear interpolation between
/// this vector and `to` by amount `weight`.
///
/// Note: Both vectors must be normalized.
/// </summary>
/// <param name="to">The destination vector for interpolation. Must be normalized.</param>
/// <param name="weight">A value on the range of 0.0 to 1.0, representing the amount of interpolation.</param>
/// <returns>The resulting vector of the interpolation.</returns>
public Vector3 Slerp(Vector3 to, real_t weight)
{
#if DEBUG
if (!IsNormalized())
throw new InvalidOperationException("Vector3 is not normalized");
{
throw new InvalidOperationException("Vector3.Slerp: From vector is not normalized.");
}
if (!to.IsNormalized())
{
throw new InvalidOperationException("Vector3.Slerp: `to` is not normalized.");
}
#endif
real_t theta = AngleTo(b);
return Rotated(Cross(b), theta * t);
real_t theta = AngleTo(to);
return Rotated(Cross(to), theta * weight);
}
public Vector3 Slide(Vector3 n)
/// <summary>
/// Returns this vector slid along a plane defined by the given normal.
/// </summary>
/// <param name="normal">The normal vector defining the plane to slide on.</param>
/// <returns>The slid vector.</returns>
public Vector3 Slide(Vector3 normal)
{
return this - n * Dot(n);
return this - normal * Dot(normal);
}
public Vector3 Snapped(Vector3 by)
/// <summary>
/// Returns this vector with each component snapped to the nearest multiple of `step`.
/// This can also be used to round to an arbitrary number of decimals.
/// </summary>
/// <param name="step">A vector value representing the step size to snap to.</param>
/// <returns>The snapped vector.</returns>
public Vector3 Snapped(Vector3 step)
{
return new Vector3
(
Mathf.Stepify(x, by.x),
Mathf.Stepify(y, by.y),
Mathf.Stepify(z, by.z)
Mathf.Stepify(x, step.x),
Mathf.Stepify(y, step.y),
Mathf.Stepify(z, step.z)
);
}
/// <summary>
/// Returns a diagonal matrix with the vector as main diagonal.
///
/// This is equivalent to a Basis with no rotation or shearing and
/// this vector's components set as the scale.
/// </summary>
/// <returns>A Basis with the vector as its main diagonal.</returns>
public Basis ToDiagonalMatrix()
{
return new Basis(
x, 0f, 0f,
0f, y, 0f,
0f, 0f, z
x, 0, 0,
0, y, 0,
0, 0, z
);
}
@ -341,25 +562,79 @@ namespace Godot
private static readonly Vector3 _forward = new Vector3(0, 0, -1);
private static readonly Vector3 _back = new Vector3(0, 0, 1);
/// <summary>
/// Zero vector, a vector with all components set to `0`.
/// </summary>
/// <value>Equivalent to `new Vector3(0, 0, 0)`</value>
public static Vector3 Zero { get { return _zero; } }
/// <summary>
/// One vector, a vector with all components set to `1`.
/// </summary>
/// <value>Equivalent to `new Vector3(1, 1, 1)`</value>
public static Vector3 One { get { return _one; } }
/// <summary>
/// Deprecated, please use a negative sign with <see cref="One"/> instead.
/// </summary>
/// <value>Equivalent to `new Vector3(-1, -1, -1)`</value>
public static Vector3 NegOne { get { return _negOne; } }
/// <summary>
/// Infinity vector, a vector with all components set to `Mathf.Inf`.
/// </summary>
/// <value>Equivalent to `new Vector3(Mathf.Inf, Mathf.Inf, Mathf.Inf)`</value>
public static Vector3 Inf { get { return _inf; } }
/// <summary>
/// Up unit vector.
/// </summary>
/// <value>Equivalent to `new Vector3(0, 1, 0)`</value>
public static Vector3 Up { get { return _up; } }
/// <summary>
/// Down unit vector.
/// </summary>
/// <value>Equivalent to `new Vector3(0, -1, 0)`</value>
public static Vector3 Down { get { return _down; } }
/// <summary>
/// Right unit vector. Represents the local direction of right,
/// and the global direction of east.
/// </summary>
/// <value>Equivalent to `new Vector3(1, 0, 0)`</value>
public static Vector3 Right { get { return _right; } }
/// <summary>
/// Left unit vector. Represents the local direction of left,
/// and the global direction of west.
/// </summary>
/// <value>Equivalent to `new Vector3(-1, 0, 0)`</value>
public static Vector3 Left { get { return _left; } }
/// <summary>
/// Forward unit vector. Represents the local direction of forward,
/// and the global direction of north.
/// </summary>
/// <value>Equivalent to `new Vector3(0, 0, -1)`</value>
public static Vector3 Forward { get { return _forward; } }
/// <summary>
/// Back unit vector. Represents the local direction of back,
/// and the global direction of south.
/// </summary>
/// <value>Equivalent to `new Vector3(0, 0, 1)`</value>
public static Vector3 Back { get { return _back; } }
// Constructors
/// <summary>
/// Constructs a new <see cref="Vector3"/> with the given components.
/// </summary>
/// <param name="x">The vector's X component.</param>
/// <param name="y">The vector's Y component.</param>
/// <param name="z">The vector's Z component.</param>
public Vector3(real_t x, real_t y, real_t z)
{
this.x = x;
this.y = y;
this.z = z;
}
/// <summary>
/// Constructs a new <see cref="Vector3"/> from an existing <see cref="Vector3"/>.
/// </summary>
/// <param name="v">The existing <see cref="Vector3"/>.</param>
public Vector3(Vector3 v)
{
x = v.x;
@ -415,20 +690,20 @@ namespace Godot
return left;
}
public static Vector3 operator /(Vector3 vec, real_t scale)
public static Vector3 operator /(Vector3 vec, real_t divisor)
{
vec.x /= scale;
vec.y /= scale;
vec.z /= scale;
vec.x /= divisor;
vec.y /= divisor;
vec.z /= divisor;
return vec;
}
public static Vector3 operator /(Vector3 left, Vector3 right)
public static Vector3 operator /(Vector3 vec, Vector3 divisorv)
{
left.x /= right.x;
left.y /= right.y;
left.z /= right.z;
return left;
vec.x /= divisorv.x;
vec.y /= divisorv.y;
vec.z /= divisorv.z;
return vec;
}
public static Vector3 operator %(Vector3 vec, real_t divisor)
@ -520,6 +795,12 @@ namespace Godot
return x == other.x && y == other.y && z == other.z;
}
/// <summary>
/// Returns true if this vector and `other` are approximately equal, by running
/// <see cref="Mathf.IsEqualApprox(real_t, real_t)"/> on each component.
/// </summary>
/// <param name="other">The other vector to compare.</param>
/// <returns>Whether or not the vectors are approximately equal.</returns>
public bool IsEqualApprox(Vector3 other)
{
return Mathf.IsEqualApprox(x, other.x) && Mathf.IsEqualApprox(y, other.y) && Mathf.IsEqualApprox(z, other.z);