1 files changed, 74 insertions, 0 deletions
diff --git a/src/modules/ray/ray_object.c b/src/modules/ray/ray_object.c
new file mode 100644
index 0000000..4c5ccaf
--- /dev/null
+++ b/src/modules/ray/ray_object.c
@@ -0,0 +1,74 @@
+#include <assert.h>
+
+#include "ray_object.h"
+#include "ray_object_light.h"
+#include "ray_object_plane.h"
+#include "ray_object_point.h"
+#include "ray_object_sphere.h"
+#include "ray_ray.h"
+#include "ray_surface.h"
+
+
+/* Determine if a ray intersects object.
+ * If the object is intersected, store where along the ray the intersection occurs in res_distance.
+ */
+int ray_object_intersects_ray(ray_object_t *object, ray_ray_t *ray, float *res_distance)
+{
+	switch (object->type) {
+	case RAY_OBJECT_TYPE_SPHERE:
+		return ray_object_sphere_intersects_ray(&object->sphere, ray, res_distance);
+
+	case RAY_OBJECT_TYPE_POINT:
+		return ray_object_point_intersects_ray(&object->point, ray, res_distance);
+
+	case RAY_OBJECT_TYPE_PLANE:
+		return ray_object_plane_intersects_ray(&object->plane, ray, res_distance);
+
+	case RAY_OBJECT_TYPE_LIGHT:
+		return ray_object_light_intersects_ray(&object->light, ray, res_distance);
+	default:
+		assert(0);
+	}
+}
+
+
+/* Return the surface normal of object @ point */
+ray_3f_t ray_object_normal(ray_object_t *object, ray_3f_t *point)
+{
+	switch (object->type) {
+	case RAY_OBJECT_TYPE_SPHERE:
+		return ray_object_sphere_normal(&object->sphere, point);
+
+	case RAY_OBJECT_TYPE_POINT:
+		return ray_object_point_normal(&object->point, point);
+
+	case RAY_OBJECT_TYPE_PLANE:
+		return ray_object_plane_normal(&object->plane, point);
+
+	case RAY_OBJECT_TYPE_LIGHT:
+		return ray_object_light_normal(&object->light, point);
+	default:
+		assert(0);
+	}
+}
+
+
+/* Return the surface of object @ point */
+ray_surface_t ray_object_surface(ray_object_t *object, ray_3f_t *point)
+{
+	switch (object->type) {
+	case RAY_OBJECT_TYPE_SPHERE:
+		return ray_object_sphere_surface(&object->sphere, point);
+
+	case RAY_OBJECT_TYPE_POINT:
+		return ray_object_point_surface(&object->point, point);
+
+	case RAY_OBJECT_TYPE_PLANE:
+		return ray_object_plane_surface(&object->plane, point);
+
+	case RAY_OBJECT_TYPE_LIGHT:
+		return ray_object_light_surface(&object->light, point);
+	default:
+		assert(0);
+	}
+}