/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: J3DKeyCollision.java
* Written by Gilda Garreton, Sun Microsystems.
*
* Copyright (c) 2005, 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.plugins.j3d;
import javax.media.j3d.*;
/** Inspired in example found in Daniel Selman's book "Java 3D Programming"
* For more information about the original example, contact Daniel Selman: daniel@selman.org
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* @author Gilda Garreton
* @version 0.1
*/
public class J3DKeyCollision extends J3DKeyBehavior
{
private View3DWindow collisionChecker;
public J3DKeyCollision(TransformGroup tg, View3DWindow collisionDetector)
{
super(tg);
tGroup = tg;
transform = new Transform3D( );
collisionChecker = collisionDetector;
}
/**
* Method to apply given transformation
* @return true if there was no collision
*/
protected boolean updateTransform(boolean force)
{
boolean collision = false;
if (!force)
collision = collisionChecker.isCollision(transform);
if( collision == false )
tGroup.setTransform(transform);
return !collision;
}
}