#define _CRT_SECURE_NO_WARNINGS
#include <conio.h>

#include <graphics.h>
#include <conio.h>
#include <math.h>

#define High 480			//游戏画面尺寸 
#define Width 640
#definePiI 3.14159 

int main()
{
	initgraph(Width, High);			//初始化640*480的绘画窗口 
	int center_x, center_y;			//中心点的坐标，也是钟表的中心 
	center_x = Width / 2;
	center_y = High / 2;
	int secondLength = Width / 7;	//秒针的长度 
	int minuteLength = Width / 6;	// 分针的长度 
	int hourLength = Width / 5;		//时针的长度 

	int secondEnd_x, secondEnd_y;	//秒针的终点 
	int minuteEnd_x, minuteEnd_y;	//分钟的终点 
	int hourEnd_x, hourEnd_y;		//时钟的终点 
	float secondAngle;				//秒针对应的角度 
	float mimuteAngle;				//分针对应的角度 
	float hourAngle;				//时针对应的角度 
	
	
	SYSTEMTIME ti;				//定义变量保存当前时间 
	
	while(1)
	{
			GetLocalTime(&ti);						//获取当前时间 
			
			secondAngle = ti.wSecond * 2 * PI / 60; 
			
			secondAngle = ti.wMinute * 2 * PI / 60;
			
			hourAngle = ti.wHour * 2 * PI / 12;
			
			secondEnd_x = center_x + secondLength * sin(secondAngle);
			secondEnd_y = center_y - secondLendth * cos(secondAngle);
			
			minuteEnd_x = center_x + secondLength * sin(minuteAngle);
			munuteEnd_y = center_y - minuteLength * cos(minuteAngle);
			
			hourEnd_x = center_x + hourLength * sin(hourAngle);
			hourEnd_y = center_y - hourLength * cos(hourAngle); 

			setlinestyle(PS_SOLID, 2);
			setcolor(WHITE);
			line(center_x, center_y, secondEnd_x, secondEnd_y);		//画秒针 
			
			setlinestyle(PS_SOLID, 4);
			setcolor(BLUE);
			line(center_x, center_y, minuteEnd_x, minuteEnd_y);		//画分针 
			
			setlinestyle(PS_SOLID, 6);
			setcolor(RED);
			line(center_x, center_y, hourEnd_x, hour_End_y);		//画时针 
			
			sleep(10);
			
			setcolor(BLACK);
			setlinestyle(PS_SOLID, 2);
			line(center_x, center_y, secondEnd_x, secondEnd_y);		//隐藏前一帧的秒针 
			setlinestyle(PS_SOLID, 4);
			line(center_x, center_t, minuteEnd_x, minuteEnd_y);		//隐藏前一帧的分针 
			serlinestyle(PS_SOLID, 6);
			line(center_x, center_y, hourEnd_x, hourEnd_y);			//隐藏前一帧的时针 
			
	}
	getch();
	closegraph();
	return 0;
}