nuclear@15: #ifndef VMATH_H_
nuclear@15: #define VMATH_H_
nuclear@15: 
nuclear@21: #include <math.h>
nuclear@26: #include "fixedp.h"
nuclear@21: 
nuclear@21: #ifndef M_PI
nuclear@21: #define M_PI	3.1415926536
nuclear@21: #endif
nuclear@21: 
nuclear@15: typedef struct {
nuclear@15: 	float x, y, z, w;
nuclear@15: } vec4_t;
nuclear@15: 
nuclear@15: typedef struct {
nuclear@15: 	float x, y, z;
nuclear@15: } vec3_t;
nuclear@15: 
nuclear@15: typedef struct {
nuclear@15: 	float x, y;
nuclear@15: } vec2_t;
nuclear@15: 
nuclear@25: typedef struct {
nuclear@25: 	fixed x, y, z, w;
nuclear@25: } vec4x_t;
nuclear@25: 
nuclear@25: typedef struct {
nuclear@25: 	fixed x, y, z;
nuclear@25: } vec3x_t;
nuclear@25: 
nuclear@25: typedef struct {
nuclear@25: 	fixed x, y;
nuclear@25: } vec2x_t;
nuclear@25: 
nuclear@28: typedef struct {
nuclear@28: 	vec3_t origin, dir;
nuclear@28: } ray3_t;
nuclear@28: 
nuclear@28: #define vec3_dot(a, b)	((a).x * (b).x + (a).y * (b).y + (a).z * (b).z)
nuclear@28: 
nuclear@28: #define vec2_lerp(res, a, b, t) \
nuclear@28: 	do { \
nuclear@28: 		(res).x = (a).x + ((b).x - (a).x) * (t); \
nuclear@28: 		(res).y = (a).y + ((b).y - (a).y) * (t); \
nuclear@28: 	} while(0)
nuclear@28: 
nuclear@28: #define vec3_lerp(res, a, b, t) \
nuclear@28: 	do { \
nuclear@28: 		(res).x = (a).x + ((b).x - (a).x) * (t); \
nuclear@28: 		(res).y = (a).y + ((b).y - (a).y) * (t); \
nuclear@28: 		(res).z = (a).z + ((b).z - (a).z) * (t); \
nuclear@28: 	} while(0)
nuclear@28: 
nuclear@28: #define ray3_point(res, ray, t) \
nuclear@28: 	do { \
nuclear@28: 		(res).x = (ray).origin.x + (ray).dir.x * (t); \
nuclear@28: 		(res).y = (ray).origin.y + (ray).dir.y * (t); \
nuclear@28: 		(res).z = (ray).origin.z + (ray).dir.z * (t); \
nuclear@28: 	} while(0)
nuclear@25: 
nuclear@25: #define vec2_to_fixed2(v, f) \
nuclear@25: 	do { \
nuclear@28: 		(f).x = fixedf((v).x); \
nuclear@28: 		(f).y = fixedf((v).y); \
nuclear@25: 	} while(0)
nuclear@25: 
nuclear@25: #define vec3_to_fixed3(v, f) \
nuclear@25: 	do { \
nuclear@28: 		(f).x = fixedf((v).x); \
nuclear@28: 		(f).y = fixedf((v).y); \
nuclear@28: 		(f).z = fixedf((v).z); \
nuclear@25: 	} while(0)
nuclear@25: 
nuclear@25: #define vec4_to_fixed4(v, f) \
nuclear@25: 	do { \
nuclear@28: 		(f).x = fixedf((v).x); \
nuclear@28: 		(f).y = fixedf((v).y); \
nuclear@28: 		(f).z = fixedf((v).z); \
nuclear@28: 		(f).w = fixedf((v).w); \
nuclear@25: 	} while(0)
nuclear@25: 
nuclear@25: 
nuclear@25: #define fixed2_to_vec2(f, v) \
nuclear@25: 	do { \
nuclear@28: 		(v).x = fixed_float((f).x); \
nuclear@28: 		(v).y = fixed_float((f).y); \
nuclear@25: 	} while(0)
nuclear@25: 
nuclear@25: #define fixed3_to_vec3(f, v) \
nuclear@25: 	do { \
nuclear@28: 		(v).x = fixed_float((f).x); \
nuclear@28: 		(v).y = fixed_float((f).y); \
nuclear@28: 		(v).z = fixed_float((f).z); \
nuclear@25: 	} while(0)
nuclear@25: 
nuclear@25: #define fixed4_to_vec4(f, v) \
nuclear@25: 	do { \
nuclear@28: 		(v).x = fixed_float((f).x); \
nuclear@28: 		(v).y = fixed_float((f).y); \
nuclear@28: 		(v).z = fixed_float((f).z); \
nuclear@28: 		(v).w = fixed_float((f).w); \
nuclear@25: 	} while(0)
nuclear@25: 
nuclear@15: 
nuclear@15: #endif	/* VMATH_H_ */