#ifndef _STD_HEADER_
#define	_STD_HEADER_

// shared functions
extern void display();
extern void reshape(int,int);
extern void mouseEvent(int button, int state, int x, int y);
extern void mouseActiveMotion(int x, int y);
extern void mousePassiveMotion(int x, int y);

// shared global variables
extern int g_nDepth;

#endif  // _STD_HEADER_