public override void OnRender(Media.DrawingContext dc)
{
/// Make room for cases when strokes are thick.
int x = _renderWidth / 2 + Stroke.Thickness - 1;
int y = _renderHeight / 2 + Stroke.Thickness - 1;
int w = _renderWidth / 2 - (Stroke.Thickness - 1) * 2;
int h = _renderHeight / 2 - (Stroke.Thickness - 1) * 2;
dc.DrawEllipse(Fill, Stroke, x, y, w, h);
}
