code: boolean sanityCheckCornerOrder( int numLines, GrowQueue_I32 corners ) {
  		int contourAnchor0 = corners.get(anchor0);
  		int previous = 0;
  		for (int i = 1; i < numLines; i++) {
  			int contourIndex = corners.get(CircularIndex.addOffset(anchor0, i, corners.size()));
  			int pixelsFromAnchor0 = CircularIndex.distanceP(contourAnchor0, contourIndex, contour.size());
  
  			if (pixelsFromAnchor0 < previous) {
  				return false;
  			} else {
  				previous = pixelsFromAnchor0;
  			}
  		}
  		return true;
  	}
docs: All the corners should be in increasing order from the first anchor.