event.c

图形学分形演示程序

#include "gui/gui.h"
#include "src/tricera.h"
#include <unistd.h>
void init_math();

void Event_loop()
{
	XEvent event1;
	struct timeval timeout;
	float i,x=1.2,z=1.2,n=.4;

      timeout.tv_usec = 10000;
      timeout.tv_sec = 0;

	init_math();
	tricera (x,0,z);
	while(1)
	{
		XNextEvent(dpy,&event1);
			switch(event1.type)
			{
				case Expose:
					if (time_interval(1,10000))
						draw_buffer (0,0,DW,DH);
				break;

				case MotionNotify:
					if (time_interval(2,10000))
					{
						i = (DH/2-(float)event1.xmotion.y)/DH*2 ;
							x = x+n*i;
					 	i = (DW/2-(float)event1.xmotion.x)/DW*2 ;
							z = z+n*i;
							while (x>6.284) x=x-6.284;
							while (x<0) x=6.284+x;
							while (z>6.284) z=z-6.284;
							while (z<0) z=6.284+z;
						tricera (x,0,z);
					}

				case ClientMessage:
					if (event1.xclient.data.l[0] == delWin) return;
				break;

				default:
				break;
			}
		select(0,NULL,NULL,NULL,&timeout);
	}
}