+void csg_reset_xform(csg_object *o);
+void csg_translate(csg_object *o, float x, float y, float z);
+void csg_rotate(csg_object *o, float angle, float x, float y, float z);
+void csg_scale(csg_object *o, float x, float y, float z);
+void csg_lookat(csg_object *o, float x, float y, float z, float tx, float ty, float tz, float ux, float uy, float uz);
+