Method makeXorYArray

ij/src/main/java/ij/gui/PointRoi.java:208–218

Creates a one-element array with a coordinate; if 'imp' is non-null converts from a screen coordinate to an image (offscreen) coordinate. The array can be used for adding to an existing point selection

(double value, ImagePlus imp, boolean isY)

	 *  converts from a screen coordinate to an image (offscreen) coordinate.
	 *  The array can be used for adding to an existing point selection */
	static float[] makeXorYArray(double value, ImagePlus imp, boolean isY) {
		if (imp != null) {
			ImageCanvas canvas = imp.getCanvas();
			if (canvas != null) {			//offset 0.5 converts from area to pixel center coordinates
				value = (isY ? canvas.offScreenYD((int)value) :canvas.offScreenXD((int)value)) - 0.5;
				if (!magnificationForSubPixel(canvas.getMagnification()))
					value = Math.round(value);
			}
		}
		return new float[] {(float)value};
	}

	void handleMouseMove(int ox, int oy) {
	}