private void UpdateViewMatrix( )
{
viewMatrix = Matrix4x4.CreateLookAt(
new Vector3( xCamera, yCamera, zCamera ),
new Vector3( xLookAt, yLookAt, zLookAt ) );
worldRendererControl.ViewMatrix = viewMatrix;
viewMatrixControl.SetMatrix( viewMatrix );
targetTransformationMatrixControl.SetMatrix( viewMatrix * transformationMatrix );
UpdateProjectedPoints( );
EstimatePose( );
}