init by DELTRON

1

glMatrixMode(GL_PROJECTION);     glLoadIdentity();     gluOrtho2D(0, WINDOW_X, 0, WINDOW_Y);     // for the demonstration set the origin to the middle of the window     glTranslatef(WINDOW_X/2,WINDOW_Y/2,0);     // invert the y axis so that down is positive     glScalef(1, -1, 1);     glMatrixMode(GL_MODELVIEW);     glLoadIdentity();