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[Core] Transform2D add set_scale and fix set_rotation

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Note: These are still not exposed to GDScript
This commit is contained in:
Aaron Franke 2019-02-12 12:55:46 -05:00
parent f97eb6d881
commit 06df7b0963
3 changed files with 13 additions and 4 deletions
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4
core/math/basis.cpp
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@ -258,7 +258,7 @@ Vector3 Basis::get_scale_abs() const {
}
Vector3 Basis::get_scale_local() const {
real_t det_sign = determinant() > 0 ? 1 : -1;
real_t det_sign = SGN(determinant());
return det_sign * Vector3(elements[0].length(), elements[1].length(), elements[2].length());
}
@ -284,7 +284,7 @@ Vector3 Basis::get_scale() const {
// matrix elements.
//
// The rotation part of this decomposition is returned by get_rotation* functions.
real_t det_sign = determinant() > 0 ? 1 : -1;
real_t det_sign = SGN(determinant());
return det_sign * Vector3(
Vector3(elements[0][0], elements[1][0], elements[2][0]).length(),
Vector3(elements[0][1], elements[1][1], elements[2][1]).length(),

12
core/math/transform_2d.cpp
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@ -80,13 +80,14 @@ real_t Transform2D::get_rotation() const {
}
void Transform2D::set_rotation(real_t p_rot) {
Size2 scale = get_scale();
real_t cr = Math::cos(p_rot);
real_t sr = Math::sin(p_rot);
elements[0][0] = cr;
elements[0][1] = sr;
elements[1][0] = -sr;
elements[1][1] = cr;
set_scale(scale);
}
Transform2D::Transform2D(real_t p_rot, const Vector2 &p_pos) {
@ -101,10 +102,17 @@ Transform2D::Transform2D(real_t p_rot, const Vector2 &p_pos) {
}
Size2 Transform2D::get_scale() const {
real_t det_sign = basis_determinant() > 0 ? 1 : -1;
real_t det_sign = SGN(basis_determinant());
return Size2(elements[0].length(), det_sign * elements[1].length());
}
void Transform2D::set_scale(Size2 &p_scale) {
elements[0].normalize();
elements[1].normalize();
elements[0] *= p_scale.x;
elements[1] *= p_scale.y;
}
void Transform2D::scale(const Size2 &p_scale) {
scale_basis(p_scale);
elements[2] *= p_scale;

1
core/math/transform_2d.h
View file

@ -81,6 +81,7 @@ struct Transform2D {
real_t basis_determinant() const;
Size2 get_scale() const;
void set_scale(Size2 &p_scale);
_FORCE_INLINE_ const Vector2 &get_origin() const { return elements[2]; }
_FORCE_INLINE_ void set_origin(const Vector2 &p_origin) { elements[2] = p_origin; }