code: public void invertRoundRect(final Rectangle2D pRectangle, int pArcW, int pArcH) {
          invertShape(toRoundRect(pRectangle, pArcW, pArcH));
      }
docs: InvertRoundRect(r,int,int) // reverses the color of all pixels in the rect
  
  @param pRectangle the rectangle to invert
  @param pArcW      width of the oval defining the rounded corner.
  @param pArcH      height of the oval defining the rounded corner.