started implementing intersection functions and the main renderer data

[cyberay] / src / geom.h

diff --git a/src/geom.h b/src/geom.h
new file mode 100644 (file)
index 0000000..86a6d23
--- /dev/null
+++ b/src/geom.h
@@ -0,0 +1,44 @@
+#ifndef GEOM_H_
+#define GEOM_H_
+
+#include <cgmath/cgmath.h>
+#include "rt.h"
+
+struct vertex {
+       cgm_vec3 pos;
+       cgm_vec3 norm;
+       cgm_vec2 tex;
+};
+
+struct triangle {
+       struct vertex v[3];
+       cgm_vec3 norm;
+       struct material *mtl;
+};
+
+struct aabox {
+       cgm_vec3 p, r;
+};
+
+struct bvhnode {
+       struct aabox aabb;
+
+       struct triangle **faces;
+       int num_faces, max_faces;
+
+       struct bvhnode *sub;
+       int num_sub;
+};
+
+struct rayhit {
+       float t;
+       struct vertex v;
+       cgm_ray ray;
+       struct material *mtl;
+};
+
+int ray_triangle(cgm_ray *ray, struct triangle *tri, float tmax, struct rayhit *hit);
+int ray_aabox_any(cgm_ray *ray, struct aabox *box, float tmax);
+int ray_bvhnode(cgm_ray *ray, struct bvhnode *bn, float tmax, struct rayhit *hit);
+
+#endif /* GEOM_H_ */