411 REFERENCE · Wikibooks
OpenGL Programming/Intermediate/TessellatingPolygons
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
#include <GL/glut.h>
void init(){
glClearColor(0,0,0,0);
glMatrixMode(GL_PROJECTION);
gluOrtho2D(0,100,0,200);
}
void Display(){
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_TRIANGLE_FAN);
glColor3f(1,0,0);
glVertex2f(0,0.5);
glVertex2f(-0.4,0);
glVertex2f(0.4,0);
glColor3f(0,1,0);
glVertex2f(0,-0.5);
glEnd();
glFlush();
}
int main(int argc, char **argv){
glutInit(& argc, argv);
glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);
glutInitWindowSize(500,500);
glutInitWindowPosition(200,200);
glutCreateWindow("line");
glutDisplayFunc(Display);
init();
glutMainLoop();
return 0;
}