001/* =========================================================== 002 * Orson Charts : a 3D chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C)opyright 2013-2022, by David Gilbert. All rights reserved. 006 * 007 * https://github.com/jfree/orson-charts 008 * 009 * This program is free software: you can redistribute it and/or modify 010 * it under the terms of the GNU General Public License as published by 011 * the Free Software Foundation, either version 3 of the License, or 012 * (at your option) any later version. 013 * 014 * This program is distributed in the hope that it will be useful, 015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 017 * GNU General Public License for more details. 018 * 019 * You should have received a copy of the GNU General Public License 020 * along with this program. If not, see <http://www.gnu.org/licenses/>. 021 * 022 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 023 * Other names may be trademarks of their respective owners.] 024 * 025 * If you do not wish to be bound by the terms of the GPL, an alternative 026 * commercial license can be purchased. For details, please see visit the 027 * Orson Charts home page: 028 * 029 * http://www.object-refinery.com/orsoncharts/index.html 030 * 031 */ 032 033package org.jfree.chart3d.renderer; 034 035import java.awt.Color; 036import org.jfree.chart3d.data.Range; 037 038/** 039 * A color scale converts a data value into a color according to some 040 * predefined color scale. 041 * 042 * @since 1.1 043 */ 044public interface ColorScale { 045 046 /** 047 * Returns the range over which the scale is defined. 048 * 049 * @return The range (never {@code null}). 050 */ 051 Range getRange(); 052 053 /** 054 * Returns the color on the scale that corresponds to the specified 055 * value. 056 * 057 * @param value the value. 058 * 059 * @return The color (never {@code null}). 060 */ 061 Color valueToColor(double value); 062 063}