/**
* 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.shader;
import ca.eandb.jmist.framework.Material;
import ca.eandb.jmist.framework.Shader;
import ca.eandb.jmist.framework.ShadingContext;
import ca.eandb.jmist.framework.color.Color;
import ca.eandb.jmist.framework.color.WavelengthPacket;
/**
* @author brad
*
*/
public final class EmissionShader implements Shader {
/**
* Serialization version ID.
*/
private static final long serialVersionUID = 8510365491868392853L;
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Shader#shade(ca.eandb.jmist.framework.ShadingContext)
*/
public Color shade(ShadingContext sc) {
WavelengthPacket lambda = sc.getWavelengthPacket();
Material mat = sc.getMaterial();
if (mat.isEmissive()) {
return mat.emission(sc, sc.getIncident().opposite(), lambda);
} else {
return sc.getColorModel().getBlack(lambda);
}
}
}