private static double normalize( double value ) {
		return Math.floor( value + 0.25 ) + 0.25;
	}
Scales a rectangle in the same way as the JRE does in
sun.java2d.pipe.PixelToParallelogramConverter.fillRectangle(),
which is used by Graphics.fillRect().
flatlaf-core/src/main/java/com/formdev/flatlaf/util/HiDPIUtils.java