gistfile1.txt

-(void)setupView:(GLView*)view
{
	
	
	const GLfloat zNear = -0.01, zFar = 1000.0, fieldOfView = 45.0; 
	GLfloat size; 
	glEnable(GL_DEPTH_TEST);
	glMatrixMode(GL_PROJECTION); 
	size = zNear * tanf(DEGREES_TO_RADIANS(fieldOfView) / 2.0); 
	CGRect rect = view.bounds; 
	//glFrustumf(-size, size, -size / (rect.size.width / rect.size.height), size / 
	//		   (rect.size.width / rect.size.height), zNear, zFar); 
	glViewport(0, 0, rect.size.width, rect.size.height);  
	[self gluPerspective:45.0 :rect.size.width/rect.size.height :-1.01 :1000.0];
	//glMatrixMode(GL_MODELVIEW);
	
	//glLoadIdentity(); 
}


- (void)gluPerspective:(double)fovy :(double)aspect :(double)zNear :(double)zFar
{

	// Start in projection mode.
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	double xmin, xmax, ymin, ymax;
	ymax = zNear * tan(fovy * M_PI / 360.0);
	ymin = -ymax;
	xmin = ymin * aspect;
	xmax = ymax * aspect;
	glFrustumf(xmin, xmax, ymin, ymax, zNear, zFar);
}