clock.c

这是过去自己编写的一个初级Dos程序

/*clock.c*/
#include<math.h>
#include<dos.h>
#include<graphics.h>
#define CENTERX 320
#define CENTERY 175
#define CLICK 100
#define CLICKDELAY 30


int Mrk_1[8]={-5,-160,5,-160,5,-130,-5,-130, };
int Mrk_2[8]={-5,-160,5,-160,2,-130,-2-130, };

int MiHand[8]={-3,-100,3,-120,4, 10,-4,10};

int HourHand[8]={-3,-80,3,-80,4, 10,-4,10};

int SecHand[8]={-2,-150,2,-150,3, 10,-3,10};



void DrawPoly(int *data,int angle,int color)
{
	int usedata[8];
	float sinang,cosang;
	int i;
	sinang=sin((float)angle/180*3.14);
	cosang=cos((float)angle/180*3.14);
	for(i=0;i<8;i+=2)
	{
		usedata[i]  =CENTERX+ cosang*data[i]-sinang*data[i+1]+.5;
		usedata[i+1]=CENTERY+sinang*data[i]+cosang*data[i+1]+.5;
	}
	setfillstyle(SOLID_FILL,color);
	fillpoly(4,usedata);
}


void DrawClock(struct time *cutime)
{
	int ang;
	float hourrate,minrate,secrate;

	setbkcolor(BLUE);
	cleardevice();
	setcolor(WHITE);


	for(ang=0;ang<360;ang+=90)
	{
		DrawPoly(Mrk_1,ang,WHITE);
		DrawPoly(Mrk_2,ang+30,WHITE);
		DrawPoly(Mrk_2,ang+60,WHITE);
	}
	secrate=(float)cutime->ti_sec/60;
	minrate=((float)cutime->ti_min+secrate)/60;
	hourrate=(((float)cutime->ti_hour)+minrate)/12;
	ang=hourrate*360;
	DrawPoly(HourHand,ang,YELLOW);
	ang=minrate*360;
	DrawPoly(MiHand,ang, GREEN);
	ang=secrate*360;
	DrawPoly(SecHand,ang, RED);
}
clock()
{
	int gdriver=EGA,
	gmode=EGAHI;
	int curpage;
	struct time curtime ,newtime ;
	initgraph(&gdriver,&gmode,"c:\\tc");
	setbkcolor(BLUE);
	cleardevice();
	gettime(&curtime);
	curpage=0;
	DrawClock(&curtime);
	while(1)
	{
		if(kbhit())
			break;
		gettime(&newtime);
		if(newtime.ti_sec!=curtime.ti_sec)
		{
			if(curpage==0)
				curpage=1;
			else
				curpage=0;
			curtime=newtime;

			setactivepage(curpage);

			DrawClock(&curtime);

			setvisualpage(curpage);
		}
	}
	closegraph();
}