/*glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 15.0); */
gluPerspective(65.0, (GLfloat) width / (GLfloat) height, 0.1, 20.0);
glMatrixMode(GL_MODELVIEW);
/*glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 15.0); */
gluPerspective(65.0, (GLfloat) width / (GLfloat) height, 0.1, 20.0);
glMatrixMode(GL_MODELVIEW);