/**
* 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.luminance;
import ca.eandb.jmist.framework.color.CIEXYZ;
import ca.eandb.jmist.framework.color.Color;
import ca.eandb.jmist.framework.color.ColorModel;
import ca.eandb.jmist.framework.color.RGB;
import ca.eandb.jmist.framework.color.Spectrum;
import ca.eandb.jmist.framework.color.WavelengthPacket;
import ca.eandb.jmist.math.MathUtil;
/**
* @author Brad
*
*/
/* package */ final class LuminanceColor implements Color, Spectrum {
/** Serialization version ID. */
private static final long serialVersionUID = -7982563437549789288L;
public static final LuminanceColor BLACK = new LuminanceColor(0.0);
public static final LuminanceColor WHITE = new LuminanceColor(1.0);
private final double value;
private final LuminanceWavelengthPacket lambda;
public LuminanceColor(double value) {
this(value, null);
}
public LuminanceColor(double value, LuminanceWavelengthPacket lambda) {
this.value = value;
this.lambda = lambda;
}
public LuminanceColor(double value, double wavelength) {
this(value, new LuminanceWavelengthPacket(wavelength));
}
private LuminanceColor create(double value, Color compat) {
return new LuminanceColor(value,
(lambda == compat.getWavelengthPacket()) ? lambda : null);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#abs()
*/
public Color abs() {
return new LuminanceColor(Math.abs(value), lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#clamp(double)
*/
public Color clamp(double max) {
return new LuminanceColor(Math.min(value, max), lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#clamp(double, double)
*/
public Color clamp(double min, double max) {
return new LuminanceColor(MathUtil.clamp(value, min, max), lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#disperse(int)
*/
public Color disperse(int channel) {
return this;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#divide(ca.eandb.jmist.framework.color.Color)
*/
public Color divide(Color other) {
return divide((LuminanceColor) other);
}
public LuminanceColor divide(LuminanceColor other) {
return create(value / other.value, other);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#divide(double)
*/
public Color divide(double c) {
return new LuminanceColor(value / c, lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#exp()
*/
public Color exp() {
return new LuminanceColor(Math.exp(value), lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#getColorModel()
*/
public ColorModel getColorModel() {
return LuminanceColorModel.getInstance();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#getValue(int)
*/
public double getValue(int channel) {
if (channel != 0) {
throw new IndexOutOfBoundsException();
}
return value;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#getWavelengthPacket()
*/
public WavelengthPacket getWavelengthPacket() {
return lambda;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#invert()
*/
public Color invert() {
return new LuminanceColor(1.0 / value, lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#luminance()
*/
public double luminance() {
return value;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#minus(ca.eandb.jmist.framework.color.Color)
*/
public Color minus(Color other) {
return minus((LuminanceColor) other);
}
public LuminanceColor minus(LuminanceColor other) {
return create(value - other.value, other);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#negative()
*/
public Color negative() {
return new LuminanceColor(-value, lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#plus(ca.eandb.jmist.framework.color.Color)
*/
public Color plus(Color other) {
return plus((LuminanceColor) other);
}
public LuminanceColor plus(LuminanceColor other) {
return create(value + other.value, other);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#pow(ca.eandb.jmist.framework.color.Color)
*/
public Color pow(Color other) {
return pow((LuminanceColor) other);
}
public LuminanceColor pow(LuminanceColor other) {
return create(Math.pow(value, other.value), other);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#pow(double)
*/
public Color pow(double e) {
return new LuminanceColor(Math.pow(value, e), lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#sqrt()
*/
public Color sqrt() {
return new LuminanceColor(Math.sqrt(value), lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#times(ca.eandb.jmist.framework.color.Color)
*/
public Color times(Color other) {
return times((LuminanceColor) other);
}
public LuminanceColor times(LuminanceColor other) {
return create(value * other.value, other);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#times(double)
*/
public Color times(double c) {
return new LuminanceColor(value * c, lambda);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#toArray()
*/
public double[] toArray() {
return new double[]{ value };
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#toRGB()
*/
public RGB toRGB() {
return new RGB(value, value, value);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Color#toXYZ()
*/
public CIEXYZ toXYZ() {
return new CIEXYZ(value, value, value);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.color.Spectrum#sample(ca.eandb.jmist.framework.color.WavelengthPacket)
*/
public Color sample(WavelengthPacket lambda) {
return sample((LuminanceWavelengthPacket) lambda);
}
public LuminanceColor sample(LuminanceWavelengthPacket lambda) {
return new LuminanceColor(value, lambda);
}
}