question: public static final void fillCircleFromStartToEnd ( GL2 gl , double sx , double sy , double ex , double ey ) { double w = Math . abs ( sx - ex ) ; double h = Math . abs ( sy - ey ) ; RenderUtilities . fillCircleFromTopLeft ( gl , sx , sy , w , h ) ; }
target:  Fills the given circle starting from the top left and ending at the bottom right. <p/> This method will use the minimum of the width and height for the diameter of the circle.  The width and height are computed from the start and end positions. <p/> This method is useful for filling a circle within a bounding box.