/**
* 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.geometry;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.Collection;
import ca.eandb.jmist.framework.SceneElement;
import ca.eandb.jmist.math.Box3;
import ca.eandb.jmist.math.Sphere;
/**
* A <code>SceneElement</code> that is the intersection of its component
* geometries.
* @author Brad Kimmel
*/
public final class IntersectionGeometry extends ConstructiveSolidGeometry {
/**
* Serialization version ID.
*/
private static final long serialVersionUID = -91390515433295892L;
/* (non-Javadoc)
* @see ca.eandb.jmist.packages.ConstructiveSolidGeometry#isInside(int, java.util.BitSet)
*/
@Override
protected boolean isInside(int nArgs, BitSet args) {
return args.nextClearBit(0) >= nArgs;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Bounded3#boundingBox()
*/
@Override
public Box3 boundingBox() {
Collection<Box3> boxes = new ArrayList<Box3>();
for (SceneElement geometry : this.children()) {
boxes.add(geometry.boundingBox());
}
return Box3.intersection(boxes);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Bounded3#boundingSphere()
*/
@Override
public Sphere boundingSphere() {
Box3 boundingBox = this.boundingBox();
return new Sphere(boundingBox.center(), boundingBox.diagonal() / 2.0);
}
}