private void setReferencePoints(BendpointRequest request) {
		PointList points = getConnection().getPoints();
		int bpIndex = -1;
		List bendPoints = (List) getConnection().getRoutingConstraint();
		Point bp = ((Bendpoint) bendPoints.get(request.getIndex()))
				.getLocation();

		int smallestDistance = -1;

		for (int i = 0; i < points.size(); i++) {
			if (smallestDistance == -1
					|| points.getPoint(i).getDistance2(bp) < smallestDistance) {
				bpIndex = i;
				smallestDistance = points.getPoint(i).getDistance2(bp);
				if (smallestDistance == 0)
					break;
			}
		}

		points.getPoint(ref1, bpIndex - 1);
		getConnection().translateToAbsolute(ref1);
		points.getPoint(ref2, bpIndex + 1);
		getConnection().translateToAbsolute(ref2);
	}

public int getDistance2(Point pt) {
	long i = pt.x - x;
	long j = pt.y - y;
	long result = i * i + j * j;
	if (result > Integer.MAX_VALUE)
		return Integer.MAX_VALUE;
	return (int)result;
}