Method indexAt

ij/src/main/java/ij/gui/Overlay.java:132–139

Returns the index of the last ROI that contains the point (x,y) or null if no ROI contains the point.

(int x, int y)

    /** Returns the index of the last ROI that contains the point (x,y)
    	or null if no ROI contains the point. */
    public int indexAt(int x, int y) {
     	Roi[] rois = toArray();
		for (int i=rois.length-1; i>=0; i--) {
			if (contains(rois[i],x,y))
				return i;
		}
		return -1;
    }
    
	private boolean contains(Roi roi, int x, int y) {
		if (roi==null) return false;