From 524db0cf19648e3c7c78d3e73103b7a0bdcd6bfc Mon Sep 17 00:00:00 2001 From: Vito Caputo Date: Wed, 18 Jan 2017 17:14:52 -0800 Subject: *: move source into src/ subdir Restoring some organizational sanity since adopting autotools. --- modules/ray/ray_3f.h | 161 --------------------------------------------------- 1 file changed, 161 deletions(-) delete mode 100644 modules/ray/ray_3f.h (limited to 'modules/ray/ray_3f.h') diff --git a/modules/ray/ray_3f.h b/modules/ray/ray_3f.h deleted file mode 100644 index 8408abb..0000000 --- a/modules/ray/ray_3f.h +++ /dev/null @@ -1,161 +0,0 @@ -#ifndef _RAY_3F_H -#define _RAY_3F_H - -#include - -typedef struct ray_3f_t { - float x, y, z; -} ray_3f_t; - - -/* return the result of (a + b) */ -static inline ray_3f_t ray_3f_add(ray_3f_t *a, ray_3f_t *b) -{ - ray_3f_t res = { - .x = a->x + b->x, - .y = a->y + b->y, - .z = a->z + b->z, - }; - - return res; -} - - -/* return the result of (a - b) */ -static inline ray_3f_t ray_3f_sub(ray_3f_t *a, ray_3f_t *b) -{ - ray_3f_t res = { - .x = a->x - b->x, - .y = a->y - b->y, - .z = a->z - b->z, - }; - - return res; -} - - -/* return the result of (-v) */ -static inline ray_3f_t ray_3f_negate(ray_3f_t *v) -{ - ray_3f_t res = { - .x = -v->x, - .y = -v->y, - .z = -v->z, - }; - - return res; -} - - -/* return the result of (a * b) */ -static inline ray_3f_t ray_3f_mult(ray_3f_t *a, ray_3f_t *b) -{ - ray_3f_t res = { - .x = a->x * b->x, - .y = a->y * b->y, - .z = a->z * b->z, - }; - - return res; -} - - -/* return the result of (v * scalar) */ -static inline ray_3f_t ray_3f_mult_scalar(ray_3f_t *v, float scalar) -{ - ray_3f_t res = { - .x = v->x * scalar, - .y = v->y * scalar, - .z = v->z * scalar, - }; - - return res; -} - - -/* return the result of (uv / scalar) */ -static inline ray_3f_t ray_3f_div_scalar(ray_3f_t *v, float scalar) -{ - ray_3f_t res = { - .x = v->x / scalar, - .y = v->y / scalar, - .z = v->z / scalar, - }; - - return res; -} - - -/* return the result of (a . b) */ -static inline float ray_3f_dot(ray_3f_t *a, ray_3f_t *b) -{ - return a->x * b->x + a->y * b->y + a->z * b->z; -} - - -/* return the length of the supplied vector */ -static inline float ray_3f_length(ray_3f_t *v) -{ - return sqrtf(ray_3f_dot(v, v)); -} - - -/* return the normalized form of the supplied vector */ -static inline ray_3f_t ray_3f_normalize(ray_3f_t *v) -{ - ray_3f_t nv; - float f; - - f = 1.0f / ray_3f_length(v); - - nv.x = f * v->x; - nv.y = f * v->y; - nv.z = f * v->z; - - return nv; -} - - -/* return the distance between two arbitrary points */ -static inline float ray_3f_distance(ray_3f_t *a, ray_3f_t *b) -{ - return sqrtf(powf(a->x - b->x, 2) + powf(a->y - b->y, 2) + powf(a->z - b->z, 2)); -} - - -/* return the cross product of two unit vectors */ -static inline ray_3f_t ray_3f_cross(ray_3f_t *a, ray_3f_t *b) -{ - ray_3f_t product; - - product.x = a->y * b->z - a->z * b->y; - product.y = a->z * b->x - a->x * b->z; - product.z = a->x * b->y - a->y * b->x; - - return product; -} - - -/* return the linearly interpolated vector between the two vectors at point alpha (0-1.0) */ -static inline ray_3f_t ray_3f_lerp(ray_3f_t *a, ray_3f_t *b, float alpha) -{ - ray_3f_t lerp_a, lerp_b; - - lerp_a = ray_3f_mult_scalar(a, 1.0f - alpha); - lerp_b = ray_3f_mult_scalar(b, alpha); - - return ray_3f_add(&lerp_a, &lerp_b); -} - - -/* return the normalized linearly interpolated vector between the two vectors at point alpha (0-1.0) */ -static inline ray_3f_t ray_3f_nlerp(ray_3f_t *a, ray_3f_t *b, float alpha) -{ - ray_3f_t lerp; - - lerp = ray_3f_lerp(a, b, alpha); - - return ray_3f_normalize(&lerp); -} - -#endif -- cgit v1.2.3