/**
* 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.color.rgb;
import ca.eandb.jmist.framework.Function1;
import ca.eandb.jmist.framework.Random;
import ca.eandb.jmist.framework.Raster;
import ca.eandb.jmist.framework.color.Color;
import ca.eandb.jmist.framework.color.ColorModel;
import ca.eandb.jmist.framework.color.ColorUtil;
import ca.eandb.jmist.framework.color.DoubleRaster;
import ca.eandb.jmist.framework.color.RGB;
import ca.eandb.jmist.framework.color.Spectrum;
import ca.eandb.jmist.framework.color.WavelengthPacket;
/**
* A three channel <code>ColorModel</code>.
* @author Brad
*/
public final class RGBColorModel extends ColorModel {
/** Serialization version ID. */
private static final long serialVersionUID = 5180023685340681958L;
/** The single <code>RGBColorModel</code> instance. */
private static final RGBColorModel instance = new RGBColorModel();
/** The names of the channels for this <code>ColorModel</code>. */
private static final String[] CHANNEL_NAMES = { "R", "G", "B" };
/**
* Creates a new <code>RGBColorModel</code>.
* This constructor is private because this class is a singleton.
*/
private RGBColorModel() {
/* nothing to do. */
}
/**
* Gets the single <code>RGBColorModel</code> instance.
* @return The single <code>RGBColorModel</code> instance.
*/
public static RGBColorModel getInstance() {
return instance;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#fromRGB(double, double, double)
*/
@Override
public Spectrum fromRGB(double r, double g, double b) {
return new RGBColor(r, g, b);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#fromXYZ(double, double, double)
*/
@Override
public Spectrum fromXYZ(double x, double y, double z) {
RGB rgb = ColorUtil.convertXYZ2RGB(x, y, z);
return fromRGB(rgb.r(), rgb.g(), rgb.b());
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#getBlack()
*/
@Override
public Spectrum getBlack() {
return RGBColor.BLACK;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#getGray(double)
*/
@Override
public Spectrum getGray(double value) {
return new RGBColor(value, value, value);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#getUnit()
*/
@Override
public Spectrum getWhite() {
return RGBColor.WHITE;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#getContinuous(ca.eandb.jmist.framework.Function1)
*/
@Override
public Spectrum getContinuous(Function1 spectrum) {
return new RGBColor(spectrum.evaluate(650e-9), spectrum.evaluate(550e-9), spectrum.evaluate(450e-9));
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#fromChannels(double[], ca.eandb.jmist.framework.color.WavelengthPacket)
*/
public Color fromArray(double[] values, WavelengthPacket lambda) {
if (values.length < 3) {
throw new IllegalArgumentException("values.length < 3");
}
return new RGBColor(values[0], values[1], values[2]);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#getBlack(ca.eandb.jmist.framework.color.WavelengthPacket)
*/
@Override
public Color getBlack(WavelengthPacket lambda) {
return RGBColor.BLACK;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#getGray(double, ca.eandb.jmist.framework.color.WavelengthPacket)
*/
@Override
public Color getGray(double value, WavelengthPacket lambda) {
return new RGBColor(value, value, value);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#getWhite(ca.eandb.jmist.framework.color.WavelengthPacket)
*/
@Override
public Color getWhite(WavelengthPacket lambda) {
return RGBColor.WHITE;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#sample(ca.eandb.jmist.framework.Random)
*/
@Override
public Color sample(Random random) {
return RGBColor.WHITE;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#getNumBands()
*/
@Override
public int getNumChannels() {
return 3;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#createRaster(int, int)
*/
@Override
public Raster createRaster(int width, int height) {
return new DoubleRaster(width, height, 3) {
private static final long serialVersionUID = -2721143490321662390L;
protected Color getPixel(double[] raster, int index) {
return new RGBColor(raster[index], raster[index + 1], raster[index + 2]);
}
};
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.ColorModel#getChannelName(int)
*/
public String getChannelName(int channel) {
if (channel < 0 || channel >= 3) {
throw new IllegalArgumentException("Invalid channel");
}
return CHANNEL_NAMES[channel];
}
}