149 lines
4.5 KiB
C++
149 lines
4.5 KiB
C++
// This code is in the public domain -- castanyo@yahoo.es
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#pragma once
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#ifndef NV_MATH_VECTOR_H
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#define NV_MATH_VECTOR_H
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#include "nvmath.h"
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namespace nv
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{
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class NVMATH_CLASS Vector2
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{
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public:
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typedef Vector2 const & Arg;
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Vector2();
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explicit Vector2(float f);
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Vector2(float x, float y);
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Vector2(Vector2::Arg v);
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//template <typename T> explicit Vector2(const T & v) : x(v.x), y(v.y) {}
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//template <typename T> operator T() const { return T(x, y); }
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const Vector2 & operator=(Vector2::Arg v);
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const float * ptr() const;
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void set(float x, float y);
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Vector2 operator-() const;
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void operator+=(Vector2::Arg v);
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void operator-=(Vector2::Arg v);
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void operator*=(float s);
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void operator*=(Vector2::Arg v);
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friend bool operator==(Vector2::Arg a, Vector2::Arg b);
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friend bool operator!=(Vector2::Arg a, Vector2::Arg b);
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union {
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struct {
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float x, y;
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};
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float component[2];
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};
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};
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class NVMATH_CLASS Vector3
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{
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public:
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typedef Vector3 const & Arg;
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Vector3();
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explicit Vector3(float x);
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//explicit Vector3(int x) : x(float(x)), y(float(x)), z(float(x)) {}
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Vector3(float x, float y, float z);
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Vector3(Vector2::Arg v, float z);
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Vector3(Vector3::Arg v);
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//template <typename T> explicit Vector3(const T & v) : x(v.x), y(v.y), z(v.z) {}
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//template <typename T> operator T() const { return T(x, y, z); }
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const Vector3 & operator=(Vector3::Arg v);
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Vector2 xy() const;
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const float * ptr() const;
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void set(float x, float y, float z);
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Vector3 operator-() const;
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void operator+=(Vector3::Arg v);
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void operator-=(Vector3::Arg v);
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void operator*=(float s);
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void operator/=(float s);
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void operator*=(Vector3::Arg v);
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void operator/=(Vector3::Arg v);
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friend bool operator==(Vector3::Arg a, Vector3::Arg b);
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friend bool operator!=(Vector3::Arg a, Vector3::Arg b);
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union {
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struct {
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float x, y, z;
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};
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float component[3];
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};
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};
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class NVMATH_CLASS Vector4
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{
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public:
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typedef Vector4 const & Arg;
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Vector4();
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explicit Vector4(float x);
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Vector4(float x, float y, float z, float w);
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Vector4(Vector2::Arg v, float z, float w);
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Vector4(Vector2::Arg v, Vector2::Arg u);
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Vector4(Vector3::Arg v, float w);
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Vector4(Vector4::Arg v);
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// Vector4(const Quaternion & v);
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//template <typename T> explicit Vector4(const T & v) : x(v.x), y(v.y), z(v.z), w(v.w) {}
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//template <typename T> operator T() const { return T(x, y, z, w); }
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const Vector4 & operator=(Vector4::Arg v);
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Vector2 xy() const;
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Vector2 zw() const;
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Vector3 xyz() const;
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const float * ptr() const;
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void set(float x, float y, float z, float w);
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Vector4 operator-() const;
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void operator+=(Vector4::Arg v);
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void operator-=(Vector4::Arg v);
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void operator*=(float s);
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void operator/=(float s);
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void operator*=(Vector4::Arg v);
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void operator/=(Vector4::Arg v);
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friend bool operator==(Vector4::Arg a, Vector4::Arg b);
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friend bool operator!=(Vector4::Arg a, Vector4::Arg b);
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union {
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struct {
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float x, y, z, w;
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};
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float component[4];
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};
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};
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} // nv namespace
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// If we had these functions, they would be ambiguous, the compiler would not know which one to pick:
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//template <typename T> Vector2 to(const T & v) { return Vector2(v.x, v.y); }
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//template <typename T> Vector3 to(const T & v) { return Vector3(v.x, v.y, v.z); }
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//template <typename T> Vector4 to(const T & v) { return Vector4(v.x, v.y, v.z, v.z); }
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// We could use a cast operator so that we could infer the expected type, but that doesn't work the same way in all compilers and produces horrible error messages.
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// Instead we simply have explicit casts:
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template <typename T> T to(const nv::Vector2 & v) { NV_COMPILER_CHECK(sizeof(T) == sizeof(nv::Vector2)); return T(v.x, v.y); }
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template <typename T> T to(const nv::Vector3 & v) { NV_COMPILER_CHECK(sizeof(T) == sizeof(nv::Vector3)); return T(v.x, v.y, v.z); }
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template <typename T> T to(const nv::Vector4 & v) { NV_COMPILER_CHECK(sizeof(T) == sizeof(nv::Vector4)); return T(v.x, v.y, v.z, v.w); }
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#endif // NV_MATH_VECTOR_H
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