public void SetCameraOrbit(Vector3 lookFrom, Vector3 lookAt, float fovRadY, float tiltRad)
{
UseFpsCamera = false;
AutoRotate = false;
Camera = new CameraOrbit(fovRadY);
_cameraTo = lookAt;
Camera.LookAt(lookFrom, lookAt, tiltRad);
Camera.SetLens(AspectRatio);
//Camera.UpdateViewMatrix();
PrepareCamera(Camera);
IsDirty = true;
_cameraIgnoreNext = true;
}