almost there

[csgray] / src / geom.h

diff --git a/src/geom.h b/src/geom.h
new file mode 100644 (file)
index 0000000..7405fa3
--- /dev/null
+++ b/src/geom.h
@@ -0,0 +1,36 @@
+#ifndef GEOM_H_
+#define GEOM_H_
+
+#include "csgray.h"
+#include "csgimpl.h"
+
+struct ray {
+       float x, y, z;
+       float dx, dy, dz;
+};
+
+struct hit {
+       float t;
+       float x, y, z;
+       float nx, ny, nz;
+       csg_object *o;
+
+       struct hit *next;
+};
+
+struct hit *alloc_hit(void);
+void free_hit(struct hit *hit);
+void free_hit_list(struct hit *hit);
+
+struct hit *ray_intersect(struct ray *ray, csg_object *o);
+
+struct hit *ray_sphere(struct ray *ray, csg_object *o);
+struct hit *ray_cylinder(struct ray *ray, csg_object *o);
+struct hit *ray_plane(struct ray *ray, csg_object *o);
+struct hit *ray_csg_un(struct ray *ray, csg_object *o);
+struct hit *ray_csg_isect(struct ray *ray, csg_object *o);
+struct hit *ray_csg_sub(struct ray *ray, csg_object *o);
+
+void xform_ray(struct ray *ray, float *mat);
+
+#endif /* GEOM_H_ */