001/** 002 * Copyright (c) 2011, The University of Southampton and the individual contributors. 003 * All rights reserved. 004 * 005 * Redistribution and use in source and binary forms, with or without modification, 006 * are permitted provided that the following conditions are met: 007 * 008 * * Redistributions of source code must retain the above copyright notice, 009 * this list of conditions and the following disclaimer. 010 * 011 * * Redistributions in binary form must reproduce the above copyright notice, 012 * this list of conditions and the following disclaimer in the documentation 013 * and/or other materials provided with the distribution. 014 * 015 * * Neither the name of the University of Southampton nor the names of its 016 * contributors may be used to endorse or promote products derived from this 017 * software without specific prior written permission. 018 * 019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 029 */ 030/** 031 * 032 */ 033package org.openimaj.demos.sandbox.image; 034 035import org.openimaj.image.DisplayUtilities; 036import org.openimaj.image.MBFImage; 037import org.openimaj.image.colour.Transforms; 038 039/** 040 * Displays an HSL swatch 041 * 042 * @author David Dupplaw (dpd@ecs.soton.ac.uk) 043 * @created 7 Jun 2013 044 */ 045public class HSLSwatches 046{ 047 /** 048 * Main method. 049 * @param args command-line args (unused) 050 */ 051 public static void main( final String[] args ) 052 { 053 // Create an image to fill 054 final MBFImage swatchS1 = new MBFImage( 800, 800, 3 ); 055 056 // Loop over the image 057 for( int y = 0; y < swatchS1.getHeight(); y++ ) { 058 for( int x = 0; x < swatchS1.getWidth(); x++ ) { 059 // Set the HSL coordinates 060 final float[] hsl = new float[3]; 061 hsl[0] = x / (float)swatchS1.getWidth(); 062 hsl[1] = 1f; 063 hsl[2] = 1 - (y / (float)swatchS1.getHeight()); 064 065 // Convert to RGB 066 final float[] rgb = new float[3]; 067 Transforms.HSL_TO_RGB( hsl, rgb ); 068 069 // Set the pixel in the RGB image 070 swatchS1.setPixel( x, y, new Float[]{ rgb[0], rgb[1], rgb[2] } ); 071 } 072 } 073 074 // Display the image 075 DisplayUtilities.display( swatchS1 ); 076 } 077}