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  • OpenGL_线性房子

    #include "stdafx.h"

    #include <GL/glut.h>

    void myInit(void)

    {  

    glClearColor(1.0, 1.0, 1.0, 0.0);      //设置背景颜色为亮白;  

    glColor3f(0.0f, 0.0f, 0.0f);       //设置绘图颜色为黑白;  

    glPointSize(1.0);          //设置点大小;  

    glLineWidth(2.0);          //设置线宽;  

    glMatrixMode(GL_PROJECTION);       //设置合适的矩阵;  

    glLoadIdentity();  

    gluOrtho2D(0.0, 640.0, 0.0, 480.0);      //建立一个坐标系; }

    void hardwireHouse(void)

    {  

    glClear(GL_COLOR_BUFFER_BIT);       //清屏;  

    glBegin(GL_LINE_LOOP);         //顶点首尾连续;  

    glVertex2i(40, 40);  

    glVertex2i(40, 90);  

    glVertex2i(70, 120);  

    glVertex2i(100, 90);  

    glVertex2i(100, 40);  

    glEnd();  

    glBegin(GL_LINE_STRIP);         //顶点首尾不连续;  

    glVertex2i(50, 100);  

    glVertex2i(50, 120);  

    glVertex2i(60, 120);  

    glVertex2i(60, 110);  

    glEnd();  

    glBegin(GL_LINE_STRIP);         //顶点首尾不连续;  

    glVertex2i(50, 40);  

    glVertex2i(50, 70);  

    glVertex2i(60, 70);  

    glVertex2i(60, 40);  

    glEnd();  

    glBegin(GL_LINE_LOOP);         //顶点首尾连续;  

    glVertex2i(80, 70);  

    glVertex2i(80, 80);  

    glVertex2i(90, 80);  

    glVertex2i(90, 70);  

    glEnd();

    glFlush();

    }

    int main(int argc, char *argv[])

    {  

    glutInit(&argc, argv);          //初始工具包;  

    glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);    //设置显示模式;  

    glutInitWindowPosition(100, 100);       //设置窗口在屏幕上的位置;  

    glutInitWindowSize(600, 600);        //设置窗口大小;  

    glutCreateWindow("线性房子");        //打开屏幕窗口;  

    glutDisplayFunc(hardwireHouse);        //注册重画函数;  

    myInit();  

    glutMainLoop();            //进入永久循环;

    }

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  • 原文地址:https://www.cnblogs.com/Alip/p/5085506.html
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