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= "https://pdfs.semanticscholar.org/647b/20bda458133ff2b883041746bc8cb75527fc.pdf">Comparison of the metrics between the CIELAB and the DIN99 022 * uniform color spaces</a> 023 * @see <a href="https://www.researchgate.net/publication/229891006_Uniform_colour_spaces_based_on_the_DIN99_colour-difference_formula">DIN99b P.284: 024 * Uniform_colour_spaces_based_on_the_DIN99_colour-difference_formula</a> 025 * @since 1.0-alpha3 026 */ 027public final class ColorDin99Lab { 028 029 public final double l99; 030 031 public final double a99; 032 033 public final double b99; 034 035 public ColorDin99Lab(final double l99, final double a99, final double b99) { 036 this.l99 = l99; 037 this.a99 = a99; 038 this.b99 = b99; 039 } 040 041 @Override 042 public boolean equals(final Object o) { 043 if (this == o) { 044 return true; 045 } 046 if (o == null || getClass() != o.getClass()) { 047 return false; 048 } 049 050 final ColorDin99Lab that = (ColorDin99Lab) o; 051 if (Double.compare(that.l99, l99) != 0) { 052 return false; 053 } 054 if (Double.compare(that.a99, a99) != 0) { 055 return false; 056 } 057 if (Double.compare(that.b99, b99) != 0) { 058 return false; 059 } 060 061 return true; 062 } 063 064 @Override 065 public int hashCode() { 066 int result; 067 long temp; 068 temp = Double.doubleToLongBits(l99); 069 result = (int) (temp ^ temp >>> 32); 070 temp = Double.doubleToLongBits(a99); 071 result = 31 * result + (int) (temp ^ temp >>> 32); 072 temp = Double.doubleToLongBits(b99); 073 return 31 * result + (int) (temp ^ temp >>> 32); 074 } 075 076 @Override 077 public String toString() { 078 return "{l: " + l99 + ", a: " + a99 + ", b: " + b99 + "}"; 079 } 080}