001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.imaging.color; 018 019/** 020 * Represents a color in the CIELCH color space. 021 * 022 * <p> 023 * Contains the constant values for black, white, red, 024 * green, and blue. 025 * </p> 026 * 027 * @see <a href= 028 * "https://en.wikipedia.org/wiki/CIELUV#Cylindrical_representation_(CIELCH)">https://en.wikipedia.org/wiki/CIELUV#Cylindrical_representation_(CIELCH)</a> 029 * @since 1.0-alpha1 030 */ 031public final class ColorCieLch { 032 033 /** 034 * A constant for color black. Color components are: 035 * <pre> 036 * L: 0 037 * c: 0 038 * h: 0 039 * </pre> 040 */ 041 public static final ColorCieLch BLACK = new ColorCieLch(0, 0, 0); 042 043 /** 044 * A constant for color white. Color components are: 045 * <pre> 046 * L: 100 047 * c: 0 048 * h: 297 049 * </pre> 050 */ 051 public static final ColorCieLch WHITE = new ColorCieLch(100, 0, 297); 052 053 /** 054 * A constant for color red. Color components are: 055 * <pre> 056 * L: 53 057 * c: 80 058 * h: 67 059 * </pre> 060 */ 061 public static final ColorCieLch RED = new ColorCieLch(53, 80, 67); 062 063 /** 064 * A constant for color green. Color components are: 065 * <pre> 066 * L: 88 067 * c: -86 068 * h: 83 069 * </pre> 070 */ 071 public static final ColorCieLch GREEN = new ColorCieLch(88, -86, 83); 072 073 /** 074 * A constant for color blue. Color components are: 075 * <pre> 076 * L: 32 077 * c: 79 078 * h: -108 079 * </pre> 080 */ 081 public static final ColorCieLch BLUE = new ColorCieLch(32, 79, -108); 082 083 public final double L; 084 public final double C; 085 public final double h; 086 087 public ColorCieLch(final double L, final double C, final double h) { 088 this.L = L; 089 this.C = C; 090 this.h = h; 091 } 092 093 @Override 094 public String toString() { 095 return "{L: " + L + ", C: " + C + ", h: " + h + "}"; 096 } 097 098 @Override 099 public boolean equals(final Object o) { 100 if (this == o) { 101 return true; 102 } 103 if (o == null || getClass() != o.getClass()) { 104 return false; 105 } 106 107 final ColorCieLch that = (ColorCieLch) o; 108 if (Double.compare(that.C, C) != 0) { 109 return false; 110 } 111 if (Double.compare(that.h, h) != 0) { 112 return false; 113 } 114 if (Double.compare(that.L, L) != 0) { 115 return false; 116 } 117 118 return true; 119 } 120 121 @Override 122 public int hashCode() { 123 int result; 124 long temp; 125 temp = Double.doubleToLongBits(L); 126 result = (int) (temp ^ (temp >>> 32)); 127 temp = Double.doubleToLongBits(C); 128 result = 31 * result + (int) (temp ^ (temp >>> 32)); 129 temp = Double.doubleToLongBits(h); 130 result = 31 * result + (int) (temp ^ (temp >>> 32)); 131 return result; 132 } 133}