public void ZoomFocusTo(IRenderer renderer, bool maintainScale = true)
{
if (!renderer.Element.IsLoaded)
{
DispatcherEx.WaitForRender();
}
Point pt1 = renderer.Element.TranslatePoint(new Point(), this);
Point pt2 = renderer.Element.TranslatePoint((Point)renderer.Element.RenderSize, this);
Rect bound = new Rect(pt1, pt2);
Vector blank = (Vector)this.ZoomPanel.RenderSize - (Vector)bound.Size;
blank.X /= 2 * (maintainScale ? this.ZoomPanel.Scale : 1);
blank.Y /= 2 * (maintainScale ? this.ZoomPanel.Scale : 1);
bound.Inflate(blank.X, blank.Y);
this.ZoomPanel.ZoomFit(bound, true);
}