#include "stdafx.h"
#include <gl/glut.h>
void myInit(void)
{
glClearColor(0.2, 0.2, 0.2, 0.0);//设置背景颜色为白;
glColor3f(0.0f, 0.0f, 0.0f);//设置绘图颜色为黑;
glPointSize(1.0);//设置点大小;
glLineWidth(1.0);//设置线宽;
glMatrixMode(GL_PROJECTION);//选择合适的矩阵;
glLoadIdentity();
gluOrtho2D(0.0, 500.0, 0.0, 500.0);//设置窗口大小;
}
void drawChessBoard(void)
{
glClear(GL_COLOR_BUFFER_BIT);//清屏;
glColor3f(0.6, 0.6, 0.6);
glRecti(0.0,0.0,100.0,100.0);
glRecti(0.0, 200.0, 100.0, 300.0);
glRecti(0.0, 400.0, 100.0, 500.0);
glRecti(100.0, 100.0, 200.0, 200.0);
glRecti(100.0, 300.0, 200.0, 400.0);
glRecti(200.0, 0.0, 300.0, 100.0);
glRecti(200.0, 200.0, 300.0, 300.0);
glRecti(200.0, 400.0, 300.0, 500.0);
glRecti(300.0, 100.0, 400.0, 200.0);
glRecti(300.0, 300.0, 400.0, 400.0);
glRecti(400, 0, 500, 100);
glRecti(400, 200, 500, 300);
glRecti(400, 400, 500, 500);
glFlush();
}
int main(int argc,char* argv[])
{
glutInit(&argc, argv);//初始化工具包;
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);//设置显示模式;
glutInitWindowPosition(100, 100);//设置窗口在屏幕上的位置;
glutInitWindowSize(500, 500);//设置窗口大小;
glutCreateWindow("棋盘");//打开屏幕窗口;
glutDisplayFunc(drawChessBoard);//注册重画函数;
myInit();
glutMainLoop();//进入永久循环;
}