opengl学习记录1——矩形绘制
1 #include <windows.h> 2 #include <gl/GL.h> 3 #include <gl/GLU.h> 4 #include <glut.h> 5 6 #pragma comment( lib, "glut.lib" ) 7 8 void display() 9 { 10 glClear( GL_COLOR_BUFFER_BIT ); 11 12 glColor3f( 1.0, 1.0, 1.0 ); 13 glBegin( GL_POLYGON ); 14 glVertex3f( 0.25, 0.25, 0.0 ); 15 glVertex3f( 0.75, 0.25, 0.0 ); 16 glVertex3f( 0.75, 0.75, 0.0 ); 17 glVertex3f( 0.25, 0.75, 0.0 ); 18 glEnd(); 19 20 glFlush(); 21 } 22 23 void init() 24 { 25 glMatrixMode( GL_PROJECTION ); 26 glLoadIdentity(); 27 glOrtho( 0.0, 1.0, 0.0, 1.0, -1.0, 1.0 ); 28 } 29 30 int gl001_main( int argc, char **argv ) 31 { 32 glutInit( &argc, argv ); 33 //glutInitDisplayMode( GLUT_SINGLE | GLUT_RGB ); 34 //glutInitWindowSize( 250, 250 ); 35 //glutInitWindowPosition( 100, 100 ); 36 glutCreateWindow( "Hello " ); 37 init(); 38 glutDisplayFunc( display ); 39 glutMainLoop(); 40 return 0; 41 }
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