public void StopAnimating()
{
if (!IsAnimating)
return;
displayLink.Invalidate ();
displayLink = null;
DestroyFrameBuffer ();
IsAnimating = false;
}
public void StartAnimating()
{
if (IsAnimating)
return;
OpenTKHelper.InitilizeRenderTargets (Size.Width, Size.Height);
CreateFrameBuffer ();
OpenTKHelper.InitilizeRenderSettings ();
displayLink = UIScreen.MainScreen.CreateDisplayLink (this, new MonoTouch.ObjCRuntime.Selector ("drawFrame"));
displayLink.FrameInterval = frameInterval;
displayLink.AddToRunLoop (NSRunLoop.Current, NSRunLoop.NSDefaultRunLoopMode);
IsAnimating = true;
}