void demo_draw(void);
-void demo_keyboard(int key, int state);
+void demo_keyboard(int key, int press);
/* defined in main_*.c */
*/
void swap_buffers(void *pixels);
+/* call each frame to get 3D viewing spherical coordinates */
+void mouse_orbit_update(float *theta, float *phi, float *dist);
+
#endif /* DEMO_H_ */