2019独角兽企业重金招聘Python工程师标准>>> 
# include
# include
/* 初始化材料属性、光源属性、光照模型，打开深度缓冲区 */
void init ( void )
{
GLfloat mat_specular [ ] = { 1.0, 1.0, 1.0, 1.0 };
GLfloat mat_shininess [ ] = { 50.0 };
GLfloat light_position [ ] = { 1.0, 1.0, 1.0, 0.0 };
glClearColor ( 0.0, 0.0, 0.0, 0.0 );
glShadeModel ( GL_SMOOTH );
glMaterialfv ( GL_FRONT, GL_SPECULAR, mat_specular);
glMaterialfv ( GL_FRONT, GL_SHININESS, mat_shininess);
glLightfv ( GL_LIGHT0, GL_POSITION, light_position);
glEnable (GL_LIGHTING);
glEnable (GL_LIGHT0);
glEnable (GL_DEPTH_TEST);
}
/*调用GLUT函数，绘制一个球*/
void display ( void )
{
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glutSolidSphere (1.0, 40, 50);
glFlush ();
}
/* 定义GLUT的reshape函数，w、h分别是当前窗口的宽和高*/
void reshape (int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ( );
if (w <= h)
glOrtho (-1.5, 1.5, -1.5 * ( GLfloat ) h / ( GLfloat ) w, 1.5 * ( GLfloat ) h / ( GLfloat ) w, -10.0, 10.0 );
else
glOrtho (-1.5 * ( GLfloat ) w / ( GLfloat ) h, 1.5 * ( GLfloat ) w / ( GLfloat ) h, -1.5, 1.5, -10.0, 10.0);
glMatrixMode ( GL_MODELVIEW );
glLoadIdentity ( ) ;
}
/* 定义对键盘的响应函数 */
void keyboard ( unsigned char key, int x, int y)
{
/*按Esc键退出*/
switch (key)
{
case 27:
exit ( 0 );
break;
}
}
int main(int argc, char** argv)
{
/* GLUT环境初始化*/
glutInit (&argc, argv);
/* 显示模式初始化 */
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
/* 定义窗口大小 */
glutInitWindowSize (300, 300);
/* 定义窗口位置 */
glutInitWindowPosition (100, 100);
/* 显示窗口，窗口标题为执行函数名 */
glutCreateWindow ( argv [ 0 ] );
/* 调用OpenGL初始化函数 */
init ( );
/* 注册OpenGL绘图函数 */
glutDisplayFunc ( display );
/* 注册窗口大小改变时的响应函数 */
glutReshapeFunc ( reshape );
/* 注册键盘响应函数 */
glutKeyboardFunc ( keyboard );
/* 进入GLUT消息循环，开始执行程序 */
glutMainLoop( );
return 0;
}
编译
gcc samplegl.c -o samplegl -lGL -lGLU -lglut
运行：
./samplegl
