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 * http://www.apache.org/licenses/LICENSE-2.0 009 * Unless required by applicable law or agreed to in writing, software 010 * distributed under the License is distributed on an "AS IS" BASIS, 011 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 * See the License for the specific language governing permissions and 013 * limitations under the License. 014 */ 015package org.apache.commons.imaging.color; 016 017/** 018 * Represents a color in the DIN99 color space, a derivation of the CIE LAB color space. 019 * 020 * @see <a href="de.wikipedia.org/wiki/DIN99-Farbraum">de.wikipedia.org/wiki/DIN99-Farbraum</a> 021 * @see <a href= 022 * "https://pdfs.semanticscholar.org/647b/20bda458133ff2b883041746bc8cb75527fc.pdf">Comparison of the metrics between the CIELAB and the DIN99 uniform 023 * color spaces</a> 024 * @see <a href="https://www.researchgate.net/publication/229891006_Uniform_colour_spaces_based_on_the_DIN99_colour-difference_formula">DIN99b P.284: 025 * Uniform_colour_spaces_based_on_the_DIN99_colour-difference_formula</a> 026 * @since 1.0-alpha3 027 */ 028public final class ColorDin99Lab { 029 030 public final double L99; 031 032 public final double a99; 033 034 public final double b99; 035 036 public ColorDin99Lab(final double L99, final double a99, final double b99) { 037 this.L99 = L99; 038 this.a99 = a99; 039 this.b99 = b99; 040 } 041 042 @Override 043 public String toString() { 044 return "{L: " + L99 + ", a: " + a99 + ", b: " + b99 + "}"; 045 } 046 047 @Override 048 public boolean equals(final Object o) { 049 if (this == o) { 050 return true; 051 } 052 if (o == null || getClass() != o.getClass()) { 053 return false; 054 } 055 056 final ColorDin99Lab that = (ColorDin99Lab) o; 057 if (Double.compare(that.L99, L99) != 0) { 058 return false; 059 } 060 if (Double.compare(that.a99, a99) != 0) { 061 return false; 062 } 063 if (Double.compare(that.b99, b99) != 0) { 064 return false; 065 } 066 067 return true; 068 } 069 070 @Override 071 public int hashCode() { 072 int result; 073 long temp; 074 temp = Double.doubleToLongBits(L99); 075 result = (int) (temp ^ temp >>> 32); 076 temp = Double.doubleToLongBits(a99); 077 result = 31 * result + (int) (temp ^ temp >>> 32); 078 temp = Double.doubleToLongBits(b99); 079 result = 31 * result + (int) (temp ^ temp >>> 32); 080 return result; 081 } 082}