ForcedDirectionRatingFunction.java

/* -*- tab-width: 4 -*-
 *
 * Electric(tm) VLSI Design System
 *
 * File: ForcedDirectionRatingFunction.java
 * Written by: Dennis Appelt, Sven Janko (Team 2)
 *
 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
 *
 * Electric(tm) is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * Electric(tm) is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Electric(tm); see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, Mass 02111-1307, USA.
 */
package com.sun.electric.tool.routing.experimentalLeeMoore3;

import java.awt.geom.Rectangle2D;

import com.sun.electric.database.topology.RTNode;

public class ForcedDirectionRatingFunction implements RatingFunction {
	public void doRating(Gridpoint curPoint,
			Gridpoint prevPoint, double xFinish, double yFinish,
			 RTNode blockings, Rectangle2D cellBounds) {
		
		double currentDistX = Math.abs(xFinish - 
				curPoint.getX());
		double currentDistY = Math.abs(yFinish - 
				curPoint.getY());
		
		double prevDistX = Math.abs(xFinish - 
				prevPoint.getX());
		double prevDistY = Math.abs(yFinish - 
				prevPoint.getY());
		
		if (currentDistX > prevDistX || currentDistY > prevDistY)
			curPoint.getRating().setDirection(prevPoint.getRating().getDirection() + 1);
	}
}