001/*
002Copyright 2006 Jerry Huxtable
003
004Licensed under the Apache License, Version 2.0 (the "License");
005you may not use this file except in compliance with the License.
006You may obtain a copy of the License at
007
008   http://www.apache.org/licenses/LICENSE-2.0
009
010Unless required by applicable law or agreed to in writing, software
011distributed under the License is distributed on an "AS IS" BASIS,
012WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013See the License for the specific language governing permissions and
014limitations under the License.
015*/
016
017package com.jhlabs.image;
018
019/**
020 * A colormap with the colors of the spectrum.
021 */
022public class SpectrumColormap implements Colormap {
023        
024        /**
025         * Construct a spcetrum color map.
026         */
027        public SpectrumColormap() {
028        }
029
030        /**
031         * Convert a value in the range 0..1 to an RGB color.
032         * @param v a value in the range 0..1
033         * @return an RGB color
034         */
035        public int getColor(float v) {
036                return Spectrum.wavelengthToRGB(380+400*ImageMath.clamp(v, 0, 1.0f));
037        }
038        
039}