private static RectangleF GetSceneBounds(Adt adt, float padding)
{
return new RectangleF
{
Top = adt.Bounds.Maximum.Y + padding,
Right = adt.Bounds.Maximum.X + padding,
Bottom = adt.Bounds.Minimum.Y - padding,
Left = adt.Bounds.Minimum.X - padding,
};
}