public RoundURectRenderer(RectangleDoubleUnit rect, FloatRectCorners radii, float tens)
 {
     rectangle = rect;
     corners   = radii;
     tension   = tens;
 }
 public RoundURectRenderer(RectangleDoubleUnit rect, FloatRectCorners radii, float tens)
 {
     rectangle = rect;
     corners = radii;
     tension = tens;
 }