Method offScreenXD

ij/src/main/java/ij/gui/Roi.java:2476–2482

Converts image canvas screen x coordinates to floating-point offscreen image pixel coordinates, depending on whether this roi uses the line or area convention for coordinates.

(int sx)

	 *  coordinates, depending on whether this roi uses the line or area convention
	 *  for coordinates. */
	protected double offScreenXD(int sx) {
		if (ic == null) return sx;
		double offScreenValue = ic.offScreenXD(sx);
		if (useLineSubpixelConvention())
			offScreenValue -= 0.5;
		return offScreenValue;
	}

	/** Converts image canvas screen y coordinates to floating-point offscreen image pixel
	 *  coordinates, depending on whether this roi uses the line or area convention