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用openGL实现用黑白相间的棋盘图案填充多边形

2015-04-08 19:52 288 查看 
#include<gl/glut.h>
#include<windows.h>
int n=0;
float a0=200,b0=200,a1=400,b1=200,a2=400,b2=400,a3=200,b3=400;
int winWidth=600,winHeight=500;

void Initial(void)
{
glClearColor(1.0f,1.0f,1.0f,1.0f);
}

void ChangeSize(int w,int h)
{  winWidth=600,winHeight=550;
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0.0,winWidth,0.0,winHeight);
}

void Display()
{
glColor3f(0.0f,0.0f,0.0f);
GLubyte fly[]=
{   0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,
0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,
0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,
0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,
0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,
0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,
0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,
0x00,0x00,0xff,0xff,0x00,0x00,0xff,0xff,
0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,
0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,
0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,
0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,
0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,
0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,
0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,
0xff,0xff,0x00,0x00,0xff,0xff,0x00,0x00,
};
glEnable(GL_POLYGON_STIPPLE);
glPolygonStipple(fly);
glRectf(5,5,800,800);
glutSwapBuffers();
}
int main(int argc,char *argv[])
{  glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB);
glutInitWindowSize(400,300);
glutInitWindowPosition(100,100);
glutCreateWindow("用黑白相间的棋盘图案填充多边形");
glutDisplayFunc(Display);
glutReshapeFunc(ChangeSize);
Initial();
glutMainLoop();
return 0;
}


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参考了别人的代码，刚接触这个东西，感觉函数名真多。。。尤其是vc++6.0没有智能感知，写的真累。
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