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 CIE 1931 color space, also 021 * known as XYZ color space. 022 * 023 * <p>Contains the constant values for black, white, red, 024 * green, and blue.</p> 025 * 026 * @see <a href="https://en.wikipedia.org/wiki/CIE_1931_color_space">https://en.wikipedia.org/wiki/CIE_1931_color_space</a> 027 * @since 1.0-alpha1 028 */ 029public final class ColorXyz { 030 031 /** 032 * A constant for color black. Color components are: 033 * <pre> 034 * X: 0 035 * Y: 0 036 * Z: 0 037 * </pre> 038 */ 039 public static final ColorXyz BLACK = new ColorXyz(0, 0, 0); 040 041 /** 042 * A constant for color white. Color components are: 043 * <pre> 044 * X: 95.05 045 * Y: 100.00 046 * Z: 108.90 047 * </pre> 048 */ 049 public static final ColorXyz WHITE = new ColorXyz(95.05, 100, 108.9); 050 051 /** 052 * A constant for color red. Color components are: 053 * <pre> 054 * X: 41.24 055 * Y: 21.26 056 * Z: 1.93 057 * </pre> 058 */ 059 public static final ColorXyz RED = new ColorXyz(41.24, 21.26, 1.93); 060 061 /** 062 * A constant for color green. Color components are: 063 * <pre> 064 * X: 35.76 065 * Y: 71.52 066 * Z: 11.92 067 * </pre> 068 */ 069 public static final ColorXyz GREEN = new ColorXyz(35.76, 71.52, 11.92); 070 071 /** 072 * A constant for color blue. Color components are: 073 * <pre> 074 * X: 18.05 075 * Y: 7.22 076 * Z: 95.05 077 * </pre> 078 */ 079 public static final ColorXyz BLUE = new ColorXyz(18.05, 7.22, 95.05); 080 081 public final double X; 082 public final double Y; 083 public final double Z; 084 085 public ColorXyz(final double X, final double Y, final double Z) { 086 this.X = X; 087 this.Y = Y; 088 this.Z = Z; 089 } 090 091 @Override 092 public String toString() { 093 return "{X: " + X + ", Y: " + Y + ", Z: " + Z + "}"; 094 } 095 096 @Override 097 public boolean equals(final Object o) { 098 if (this == o) { 099 return true; 100 } 101 if (o == null || getClass() != o.getClass()) { 102 return false; 103 } 104 105 final ColorXyz colorXyz = (ColorXyz) o; 106 if (Double.compare(colorXyz.X, X) != 0) { 107 return false; 108 } 109 if (Double.compare(colorXyz.Y, Y) != 0) { 110 return false; 111 } 112 if (Double.compare(colorXyz.Z, Z) != 0) { 113 return false; 114 } 115 116 return true; 117 } 118 119 @Override 120 public int hashCode() { 121 int result; 122 long temp; 123 temp = Double.doubleToLongBits(X); 124 result = (int) (temp ^ (temp >>> 32)); 125 temp = Double.doubleToLongBits(Y); 126 result = 31 * result + (int) (temp ^ (temp >>> 32)); 127 temp = Double.doubleToLongBits(Z); 128 result = 31 * result + (int) (temp ^ (temp >>> 32)); 129 return result; 130 } 131}