1 files changed, 121 insertions, 0 deletions
diff --git a/src/libs/ray/ray_render_object.h b/src/libs/ray/ray_render_object.h
new file mode 100644
index 0000000..1136eee
--- /dev/null
+++ b/src/libs/ray/ray_render_object.h
@@ -0,0 +1,121 @@
+#ifndef _RAY_RENDER_OBJECT_H
+#define _RAY_RENDER_OBJECT_H
+
+#include <assert.h>
+
+#include "ray_camera.h"
+#include "ray_object.h"
+#include "ray_object_type.h"
+#include "ray_render_object_plane.h"
+#include "ray_render_object_point.h"
+#include "ray_render_object_sphere.h"
+#include "ray_ray.h"
+#include "ray_surface.h"
+
+typedef union ray_render_object_t {
+	ray_object_type_t		type;
+	ray_render_object_sphere_t	sphere;
+	ray_render_object_point_t	point;
+	ray_render_object_plane_t	plane;
+} ray_render_object_t;
+
+
+
+/* Prepare an object for rendering.
+ * If the object has any pre-calculating to do, this is where it happens.
+ * The pre-calculated stuff is object-resident under a _prepared struct member.
+ */
+static inline ray_render_object_t ray_render_object_prepare(const ray_object_t *object, const ray_camera_t *camera)
+{
+	ray_render_object_t	prepared = { .type = object->type };
+
+	switch (object->type) {
+	case RAY_OBJECT_TYPE_SPHERE:
+		prepared.sphere = ray_render_object_sphere_prepare(&object->sphere, camera);
+		break;
+
+	case RAY_OBJECT_TYPE_POINT:
+		prepared.point = ray_render_object_point_prepare(&object->point, camera);
+		break;
+
+	case RAY_OBJECT_TYPE_PLANE:
+		prepared.plane = ray_render_object_plane_prepare(&object->plane, camera);
+		break;
+
+	case RAY_OBJECT_TYPE_LIGHT:
+		/* TODO */
+		break;
+
+	default:
+		assert(0);
+	}
+
+	return prepared;
+}
+
+
+/* Determine if a ray intersects object.
+ * If the object is intersected, store where along the ray the intersection occurs in res_distance.
+ */
+static inline int ray_render_object_intersects_ray(ray_render_object_t *object, unsigned depth, ray_ray_t *ray, float *res_distance)
+{
+	switch (object->type) {
+	case RAY_OBJECT_TYPE_SPHERE:
+		return ray_render_object_sphere_intersects_ray(&object->sphere, depth, ray, res_distance);
+
+	case RAY_OBJECT_TYPE_POINT:
+		return ray_render_object_point_intersects_ray(&object->point, depth, ray, res_distance);
+
+	case RAY_OBJECT_TYPE_PLANE:
+		return ray_render_object_plane_intersects_ray(&object->plane, depth, ray, res_distance);
+
+	case RAY_OBJECT_TYPE_LIGHT:
+		/* TODO */
+	default:
+		assert(0);
+	}
+}
+
+
+/* Return the surface normal of object @ point */
+static inline ray_3f_t ray_render_object_normal(ray_render_object_t *object, ray_3f_t *point)
+{
+	switch (object->type) {
+	case RAY_OBJECT_TYPE_SPHERE:
+		return ray_render_object_sphere_normal(&object->sphere, point);
+
+	case RAY_OBJECT_TYPE_POINT:
+		return ray_render_object_point_normal(&object->point, point);
+
+	case RAY_OBJECT_TYPE_PLANE:
+		return ray_render_object_plane_normal(&object->plane, point);
+
+	case RAY_OBJECT_TYPE_LIGHT:
+		/* TODO */
+	default:
+		assert(0);
+	}
+}
+
+
+/* Return the surface of object @ point */
+static inline ray_surface_t ray_render_object_surface(ray_render_object_t *object, ray_3f_t *point)
+{
+	switch (object->type) {
+	case RAY_OBJECT_TYPE_SPHERE:
+		return ray_render_object_sphere_surface(&object->sphere, point);
+
+	case RAY_OBJECT_TYPE_POINT:
+		return ray_render_object_point_surface(&object->point, point);
+
+	case RAY_OBJECT_TYPE_PLANE:
+		return ray_render_object_plane_surface(&object->plane, point);
+
+	case RAY_OBJECT_TYPE_LIGHT:
+		/* TODO */
+	default:
+		assert(0);
+	}
+}
+
+#endif