ray: libize raytracer core, introduces src/libs

This is the first step of breaking out all the core rendering stuffs
into reusable libraries and making modules purely compositional,
consumers of various included rendering/effects libraries.

Expect multiple modules leveraging libray for a variety of scenes and
such.  Also expect compositions mixing the various libraries for more
interesting visuals.

1 files changed, 0 insertions, 154 deletions

diff --git a/src/modules/ray/ray_3f.h b/src/modules/ray/ray_3f.h
deleted file mode 100644
index 2c04a5a..0000000
--- a/src/modules/ray/ray_3f.h
+++ /dev/null
@@ -1,154 +0,0 @@
-#ifndef _RAY_3F_H
-#define _RAY_3F_H
-
-#include <math.h>
-
-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(const ray_3f_t *a, const 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(const ray_3f_t *a, const 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(const 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(const ray_3f_t *a, const 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(const 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(const 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(const ray_3f_t *a, const 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(const 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(const ray_3f_t *v)
-{
-	return ray_3f_mult_scalar(v, 1.0f / ray_3f_length(v));
-}
-
-
-/* return the distance between two arbitrary points */
-static inline float ray_3f_distance(const ray_3f_t *a, const ray_3f_t *b)
-{
-	ray_3f_t	delta = ray_3f_sub(a, b);
-
-	return ray_3f_length(&delta);
-}
-
-
-/* return the cross product of two unit vectors */
-static inline ray_3f_t ray_3f_cross(const ray_3f_t *a, const 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(const ray_3f_t *a, const 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(const ray_3f_t *a, const ray_3f_t *b, float alpha)
-{
-	ray_3f_t	lerp;
-
-	lerp = ray_3f_lerp(a, b, alpha);
-
-	return ray_3f_normalize(&lerp);
-}
-
-#endif