画正方体

最新推荐文章于 2023-01-03 21:34:15 发布

jena_wy

最新推荐文章于 2023-01-03 21:34:15 发布

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CC 4.0 BY-SA版权

分类专栏： Opengl

本文链接：https://blog.youkuaiyun.com/wyyy2088511/article/details/78425192

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本文提供了一个使用OpenGL和GLUT库进行三维线条绘制的示例程序。通过定义一系列顶点来绘制一个三维对象的轮廓，展示了如何利用GL_LINES进行基本图形的构建。此外，还介绍了如何设置窗口和渲染循环。

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#include <gl/glut.h>
#pragma comment(lib,"glut.lib")
#include<math.h>

void draw()
{
   glClear(GL_COLOR_BUFFER_BIT);
   glBegin(GL_LINES);
   //正面
   glVertex3d(0,0,0);
   glVertex3d(0,0.5,0);

   glVertex3d(0,0.5,0);
   glVertex3d(0.5,0.5,0);

   glVertex3d(0.5,0.5,0);
   glVertex3d(0.5,0,0);

   glVertex3d(0,0,0);
   glVertex3d(0.5,0,0);

   //上面
   glVertex3d(0,0.5,0);
   glVertex3d(0,0.5,-0.5);

   glVertex3d(0,0.5,-0.5);
   glVertex3d(0.5,0.5,-0.5);

   glVertex3d(0.5,0.5,-0.5);
   glVertex3d(0.5,0.5,0);

   //左面
   glVertex3d(0,0,0);
   glVertex3d(0,0,-0.5);

   glVertex3d(0,0,-0.5);
   glVertex3d(0,0.5,-0.5);

   //右面
   glVertex3d(0.5,0,0);
   glVertex3d(0.5,0,-0.5);

   glVertex3d(0.5,0,-0.5);
   glVertex3d(0.5,0.5,-0.5);

   //下面
   glVertex3d(0,0,-0.5);
   glVertex3d(0.5,0,-0.5);

   glEnd();

}

void displayFunc()
{
   glClear(GL_COLOR_BUFFER_BIT);
    glColor3f(1.0,1.0,1.0);
    glRotated(-10,1,0,0);
    glRotated(30,0,1,0);
    draw();
    glFlush();
}

int main(int argc,char* argv[])
{
    glutInit(&argc,argv);
   glutInitDisplayMode(GLUT_RGB);
    glutInitWindowPosition(100,100);
    glutInitWindowSize(500,500);
    glutCreateWindow("Test");

    glutDisplayFunc(displayFunc);
    glutMainLoop();
}