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/*
* TouchGraph LLC. Apache-Style Software License
*
*
* Copyright (c) 2001-2002 Alexander Shapiro. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by
* TouchGraph LLC (http://www.touchgraph.com/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "TouchGraph" or "TouchGraph LLC" must not be used to endorse
* or promote products derived from this software without prior written
* permission. For written permission, please contact
* alex@touchgraph.com
*
* 5. Products derived from this software may not be called "TouchGraph",
* nor may "TouchGraph" appear in their name, without prior written
* permission of alex@touchgraph.com.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL TOUCHGRAPH OR ITS CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
*/
package com.touchgraph.graphlayout;
import java.util.Vector;
/** TGLensSet: A collection of lenses, where each lens is a function that
* warps 2D space.
*
* @author Alexander Shapiro
* @version 1.22-jre1.1 $Id: TGLensSet.java,v 1.1 2002/09/19 15:58:08 ldornbusch Exp $
*/
public class TGLensSet {
Vector lenses=new Vector();
public void addLens( TGAbstractLens l ) {
lenses.addElement(l);
}
public void applyLens( TGPoint2D p ) {
if (lenses.isEmpty()) return;
//else
for (int i=0; i<lenses.size(); i++) {
((TGAbstractLens)lenses.elementAt(i)).applyLens(p);
}
}
public void undoLens( TGPoint2D p ) {
if (lenses.isEmpty()) return;
//else
for (int i=lenses.size()-1; i>=0; i--) {
((TGAbstractLens) lenses.elementAt(i)).undoLens(p);
}
}
/** Convert draw position to real position. */
public TGPoint2D convRealToDraw( TGPoint2D p ) {
TGPoint2D newp = new TGPoint2D(p);
applyLens(newp);
return newp;
}
/** Convert draw position to real position. */
public TGPoint2D convRealToDraw( double x, double y ) {
TGPoint2D newp = new TGPoint2D(x,y);
applyLens(newp);
return newp;
}
/** Convert real position to draw position. */
public TGPoint2D convDrawToReal( TGPoint2D p ) {
TGPoint2D newp = new TGPoint2D(p);
undoLens(newp);
return newp;
}
/** Convert real position to draw position. */
public TGPoint2D convDrawToReal(double x, double y) {
TGPoint2D newp = new TGPoint2D(x, y);
undoLens(newp);
return newp;
}
} // end com.touchgraph.graphlayout.TGLensSet
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