nuclear@0: #ifndef GMATH_VEC_H_
nuclear@0: #define GMATH_VEC_H_
nuclear@0: 
nuclear@0: #include <math.h>
nuclear@5: #include "swizzle.h"
nuclear@0: 
nuclear@2: namespace gph {
nuclear@0: 
nuclear@5: #define GPH_SWIZZLE2(T, a, b)		inline Vector2 a##b() const;
nuclear@5: #define GPH_SWIZZLE3(T, a, b, c)	inline Vector3 a##b##c() const;
nuclear@5: #define GPH_SWIZZLE4(T, a, b, c, d)	inline Vector4 a##b##c##d() const;
nuclear@5: 
nuclear@5: class Vector3;
nuclear@3: class Vector4;
nuclear@4: class Matrix4x4;
nuclear@3: 
nuclear@5: class Vector2 {
nuclear@5: public:
nuclear@5: 	float x, y;
nuclear@5: 
nuclear@5: 	Vector2() : x(0), y(0) {}
nuclear@5: 	Vector2(float x_, float y_) : x(x_), y(y_) {}
nuclear@5: 	Vector2(const Vector3 &v);
nuclear@5: 
nuclear@5: 	inline void normalize();
nuclear@5: 	inline float &operator[] (int idx);
nuclear@5: 	inline const float &operator[] (int idx) const;
nuclear@5: 
nuclear@5: 	GPH_VEC2_SWIZZLE
nuclear@5: };
nuclear@5: 
nuclear@2: class Vector3 {
nuclear@0: public:
nuclear@0: 	float x, y, z;
nuclear@0: 
nuclear@2: 	Vector3() : x(0), y(0), z(0) {}
nuclear@2: 	Vector3(float x_, float y_, float z_) : x(x_), y(y_), z(z_) {}
nuclear@3: 	Vector3(const Vector4 &v);
nuclear@0: 
nuclear@4: 	inline void normalize();
nuclear@4: 	inline float &operator[] (int idx);
nuclear@4: 	inline const float &operator[] (int idx) const;
nuclear@5: 
nuclear@5: 	GPH_VEC3_SWIZZLE
nuclear@0: };
nuclear@0: 
nuclear@3: 
nuclear@3: class Vector4 {
nuclear@3: public:
nuclear@3: 	float x, y, z, w;
nuclear@3: 
nuclear@3: 	Vector4() : x(0), y(0), z(0), w(0) {}
nuclear@3: 	Vector4(float x_, float y_, float z_, float w_) : x(x_), y(y_), z(z_), w(w_) {}
nuclear@3: 	Vector4(const Vector3 &v);
nuclear@3: 
nuclear@4: 	inline void normalize();
nuclear@4: 	inline float &operator[] (int idx);
nuclear@4: 	inline const float &operator[] (int idx) const;
nuclear@5: 
nuclear@5: 	GPH_VEC4_SWIZZLE
nuclear@3: };
nuclear@3: 
nuclear@3: // ---- Vector3 functions ----
nuclear@4: inline Vector3 operator +(const Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 operator -(const Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 operator *(const Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 operator /(const Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 operator *(const Vector3 &v, float s);
nuclear@4: inline Vector3 operator *(float s, const Vector3 &v);
nuclear@4: inline Vector3 operator /(const Vector3 &v, float s);
nuclear@4: inline Vector3 operator /(float s, const Vector3 &v);
nuclear@4: inline Vector3 &operator +=(Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 &operator -=(Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 &operator *=(Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 &operator /=(Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 &operator *=(Vector3 &v, float s);
nuclear@4: inline Vector3 &operator /=(Vector3 &v, float s);
nuclear@3: 
nuclear@4: Vector3 operator *(const Vector3 &v, const Matrix4x4 &m);
nuclear@4: Vector3 operator *(const Matrix4x4 &m, const Vector3 &v);
nuclear@0: 
nuclear@4: inline bool operator ==(const Vector3 &a, const Vector3 &b);
nuclear@4: inline bool operator !=(const Vector3 &a, const Vector3 &b);
nuclear@0: 
nuclear@4: inline float dot(const Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 cross(const Vector3 &a, const Vector3 &b);
nuclear@4: inline float length(const Vector3 &v);
nuclear@4: inline float length_sq(const Vector3 &v);
nuclear@4: inline Vector3 normalize(const Vector3 &v);
nuclear@0: 
nuclear@4: inline Vector3 reflect(const Vector3 &v, const Vector3 &n);
nuclear@4: inline Vector3 refract(const Vector3 &v, const Vector3 &n, float ior);
nuclear@4: inline Vector3 refract(const Vector3 &v, const Vector3 &n, float from_ior, float to_ior);
nuclear@0: 
nuclear@4: inline Vector3 distance(const Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 distance_sq(const Vector3 &a, const Vector3 &b);
nuclear@4: inline Vector3 faceforward(const Vector3 &n, const Vector3 &vi, const Vector3 &ng);
nuclear@0: 
nuclear@0: }
nuclear@0: 
nuclear@0: #endif	/* GMATH_VEC_H_ */