/**
* Java Modular Image Synthesis Toolkit (JMIST)
* Copyright (C) 2008-2013 Bradley W. Kimmel
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package ca.eandb.jmist.framework.path;
import ca.eandb.jmist.framework.ScatteredRay;
import ca.eandb.jmist.framework.color.Color;
import ca.eandb.jmist.math.AffineMatrix3;
import ca.eandb.jmist.math.HPoint3;
import ca.eandb.jmist.math.Vector3;
/**
* A <code>PathNode</code> that has had an affine transformation applied to it.
* @author Brad Kimmel
*/
public abstract class TransformedPathNode extends AbstractPathNode {
protected final PathNode inner;
protected final AffineMatrix3 localToWorld;
protected final AffineMatrix3 worldToLocal;
public TransformedPathNode(PathNode inner, AffineMatrix3 localToWorld, AffineMatrix3 worldToLocal) {
super(inner.getPathInfo(), inner.getRU(), inner.getRV(), inner.getRJ());
this.inner = inner;
this.localToWorld = localToWorld;
this.worldToLocal = worldToLocal;
}
public TransformedPathNode(PathNode inner, AffineMatrix3 worldToLocal) {
this(inner, worldToLocal, worldToLocal.inverse());
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#getCosine(ca.eandb.jmist.math.Vector3)
*/
public double getCosine(Vector3 v) {
v = worldToLocal.times(v);
return inner.getCosine(v);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#getCumulativeWeight()
*/
public Color getCumulativeWeight() {
return inner.getCumulativeWeight();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#getDepth()
*/
public int getDepth() {
return inner.getDepth();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#getGeometricFactor()
*/
public double getGeometricFactor() {
return inner.getGeometricFactor();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#getPDF()
*/
public double getPDF() {
return inner.getPDF();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#getParent()
*/
public PathNode getParent() {
return inner.getParent();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#getPosition()
*/
public HPoint3 getPosition() {
return localToWorld.times(inner.getPosition());
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#isOnLightPath()
*/
public boolean isOnLightPath() {
return inner.isOnLightPath();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#isSpecular()
*/
public boolean isSpecular() {
return inner.isSpecular();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#sample(ca.eandb.jmist.framework.Random)
*/
public ScatteredRay sample(double ru, double rv, double rj) {
ScatteredRay sr = inner.sample(ru, rv, rj);
return sr != null ? sr.transform(localToWorld) : null;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.path.PathNode#scatter(ca.eandb.jmist.math.Vector3)
*/
public Color scatter(Vector3 v) {
v = worldToLocal.times(v);
return inner.scatter(v);
}
}