[游戏开发]C++ “左圆右方”动画

#include <iostream>
#include <graphics.h>
DWORD WINAPI drawCircle(LPVOID lpParam) 
{
	double pi = 3.1415926;
	for (int i = 0; i < 800; i++) 
	{
		int x = 200 + 100 * cos(i * pi / 400);
		int y = 200 + 100 * sin(i * pi / 400);
		putpixel(x, y, RED);
		Sleep(10);
	}
	return 0;
}

DWORD WINAPI drawRectangle(LPVOID lpParam)
{
	int x, y;
	for (int i = 0; i < 800; i++) 
	{
		if (i < 200) 
		{
			x = 500 + i;
			y = 100;
		}
		else if (i < 400) 
		{
			x = 700;
			y = 100 + (i - 200);
		}
		else if (i < 600) 
		{
			x = 700 - (i - 400);
			y = 300;
		}
		else 
		{
			x = 500;
			y = 300 - (i - 600);
		}
		putpixel(x, y, RED);
		Sleep(10);
	}
	return 0;
}

int main() 
{
	initgraph(800, 400);
	HANDLE hThread[2];
	hThread[0] = CreateThread(NULL, 0, drawCircle, NULL, 0, NULL);
	hThread[1] = CreateThread(NULL, 0, drawRectangle, NULL, 0, NULL);
	WaitForMultipleObjects(2, hThread, TRUE, INFINITE); 	//等待子线程运行 
	system("pause");
	closegraph();          // 关闭绘图窗口
	return 0;
}

（*需要下载相关动画插件EasyX）?