熟悉OpenGL的填充属性函数并能使用其属性函数按照给定的属性填充图形。
【注】主要代码如下：
#include<windows.h>
#include<GL/gl.h>
#include<GL/glu.h>
#include<GL/glut.h>
void display(void)
{
GLubyte fly[] = { //第二个矩形点画模式的mask值
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00,
0x03, 0x80, 0x01, 0xC0, 0x06, 0xC0, 0x03,0x60,
0x04, 0x60, 0x06, 0x20, 0x04, 0x30, 0x0C,0x20,
0x04, 0x18, 0x18, 0x20, 0x04, 0x0C, 0x30,0x20,
0x04, 0x06, 0x60, 0x20, 0x44, 0x03, 0xC0,0x22,
0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80,0x22,
0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80,0x22,
0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80,0x22,
0x66, 0x01, 0x80, 0x66, 0x33, 0x01, 0x80,0xCC,
0x19, 0x81, 0x81, 0x98, 0x0C, 0xC1, 0x83,0x30,
0x07, 0xe1, 0x87, 0xe0, 0x03, 0x3f, 0xfc,0xc0,
0x03, 0x31, 0x8c, 0xc0, 0x03, 0x33, 0xcc,0xc0,
0x06, 0x64, 0x26, 0x60, 0x0c, 0xcc, 0x33,0x30,
0x18, 0xcc, 0x33, 0x18, 0x10, 0xc4, 0x23,0x08,
0x10, 0x63, 0xC6, 0x08, 0x10, 0x30, 0x0c,0x08,
0x10, 0x18, 0x18, 0x08, 0x10, 0x00, 0x00,0x08
};
GLubyte halftone[] = { //第三个矩形点画模式的mask值
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55,
0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55,0x55
};
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1.0, 1.0, 1.0);
glRectf(25.0, 25.0, 125.0, 125.0);
glEnable(GL_POLYGON_STIPPLE);
glPolygonStipple (fly);
glRectf(125.0, 25.0, 225.0, 125.0);
glPolygonStipple (halftone);
glRectf(225.0, 25.0, 325.0, 125.0);
glDisable(GL_POLYGON_STIPPLE);
glFlush ();
}
void myinit (void)
{
glClearColor (0.0, 0.0, 0.0, 1.0);
glMatrixMode(GL_PROJECTION); // Set projection parameters.
gluOrtho2D (0.0, 400.0, 0.0, 150.0);
//glShadeModel (GL_FLAT);
}
int main(int argc, char**argv)
{
glutInitDisplayMode(GLUT_SINGLE |GLUT_RGBA);
glutInit (&argc, argv);
//glutInitPosition
glutInitWindowPosition(0, 0);
glutInitWindowSize (350, 150);
glutCreateWindow ("An Example OpenGLProgram");
//glutInitWindow (argv[0]);
myinit();
glutDisplayFunc(display);
glutMainLoop();
}
