* @param rect rectangle to mask
* @param bInside if true, interior is masked; if false, exterior.
*/
public RgbMaskPoly(Rect rect, boolean bInside) {
this.points = new Point[4];
this.points[0] = new Point(rect.getLeft(), rect.getTop());
this.points[1] = new Point(rect.getRight(), rect.getTop());
this.points[2] = new Point(rect.getRight(), rect.getBottom());
this.points[3] = new Point(rect.getLeft(), rect.getBottom());
this.bInside = bInside;
}