ColorCieLch.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.imaging.color;
/**
* Represents a color in the CIELCH color space.
*
* <p>
* Contains the constant values for black, white, red, green, and blue.
* </p>
*
* @see <a href=
* "https://en.wikipedia.org/wiki/CIELUV#Cylindrical_representation_(CIELCH)">https://en.wikipedia.org/wiki/CIELUV#Cylindrical_representation_(CIELCH)</a>
* @since 1.0-alpha1
*/
public final class ColorCieLch {
/**
* A constant for color black. Color components are:
*
* <pre>
* L: 0
* c: 0
* h: 0
* </pre>
*/
public static final ColorCieLch BLACK = new ColorCieLch(0, 0, 0);
/**
* A constant for color white. Color components are:
*
* <pre>
* L: 100
* c: 0
* h: 297
* </pre>
*/
public static final ColorCieLch WHITE = new ColorCieLch(100, 0, 297);
/**
* A constant for color red. Color components are:
*
* <pre>
* L: 53
* c: 80
* h: 67
* </pre>
*/
public static final ColorCieLch RED = new ColorCieLch(53, 80, 67);
/**
* A constant for color green. Color components are:
*
* <pre>
* L: 88
* c: -86
* h: 83
* </pre>
*/
public static final ColorCieLch GREEN = new ColorCieLch(88, -86, 83);
/**
* A constant for color blue. Color components are:
*
* <pre>
* L: 32
* c: 79
* h: -108
* </pre>
*/
public static final ColorCieLch BLUE = new ColorCieLch(32, 79, -108);
public final double l;
public final double c;
public final double h;
public ColorCieLch(final double l, final double c, final double h) {
this.l = l;
this.c = c;
this.h = h;
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final ColorCieLch that = (ColorCieLch) o;
if (Double.compare(that.c, c) != 0) {
return false;
}
if (Double.compare(that.h, h) != 0) {
return false;
}
if (Double.compare(that.l, l) != 0) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result;
long temp;
temp = Double.doubleToLongBits(l);
result = (int) (temp ^ temp >>> 32);
temp = Double.doubleToLongBits(c);
result = 31 * result + (int) (temp ^ temp >>> 32);
temp = Double.doubleToLongBits(h);
return 31 * result + (int) (temp ^ temp >>> 32);
}
@Override
public String toString() {
return "{L: " + l + ", C: " + c + ", h: " + h + "}";
}
}