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_object_sphere.h | 65 ----------------------------------------- 1 file changed, 65 deletions(-) delete mode 100644 modules/ray/ray_object_sphere.h (limited to 'modules/ray/ray_object_sphere.h') diff --git a/modules/ray/ray_object_sphere.h b/modules/ray/ray_object_sphere.h deleted file mode 100644 index 85b3d93..0000000 --- a/modules/ray/ray_object_sphere.h +++ /dev/null @@ -1,65 +0,0 @@ -#ifndef _RAY_OBJECT_SPHERE_H -#define _RAY_OBJECT_SPHERE_H - -#include -#include - -#include "ray_3f.h" -#include "ray_color.h" -#include "ray_object_type.h" -#include "ray_ray.h" -#include "ray_surface.h" - - -typedef struct ray_object_sphere_t { - ray_object_type_t type; - ray_surface_t surface; - ray_3f_t center; - float radius; -} ray_object_sphere_t; - - -static inline int ray_object_sphere_intersects_ray(ray_object_sphere_t *sphere, ray_ray_t *ray, float *res_distance) -{ - ray_3f_t v = ray_3f_sub(&ray->origin, &sphere->center); - float b = ray_3f_dot(&v, &ray->direction); - float disc = (sphere->radius * sphere->radius) - ray_3f_dot(&v, &v) + (b * b); - - if (disc > 0) { - float i1, i2; - - disc = sqrtf(disc); - - i1 = b - disc; - i2 = b + disc; - - if (i2 > 0 && i1 > 0) { - *res_distance = i1; - return 1; - } - } - - return 0; -} - - -/* return the normal of the surface at the specified point */ -static inline ray_3f_t ray_object_sphere_normal(ray_object_sphere_t *sphere, ray_3f_t *point) -{ - ray_3f_t normal; - - normal = ray_3f_sub(point, &sphere->center); - normal = ray_3f_div_scalar(&normal, sphere->radius); /* normalize without the sqrt() */ - - return normal; -} - - -/* return the surface of the sphere @ point */ -static inline ray_surface_t ray_object_sphere_surface(ray_object_sphere_t *sphere, ray_3f_t *point) -{ - /* uniform solids for now... */ - return sphere->surface; -} - -#endif -- cgit v1.2.1