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 */
030package org.openimaj.image.contour;
031
032import java.util.ArrayList;
033import java.util.List;
034
035import org.openimaj.image.MBFImage;
036import org.openimaj.image.colour.RGBColour;
037import org.openimaj.image.renderer.MBFImageRenderer;
038
039/**
040 * {@link MBFImageRenderer} for drawing {@link Contour}s.
041 * 
042 * @author Sina Samnagooei (ss@ecs.soton.ac.uk)
043 * 
044 */
045public class ContourRenderer extends MBFImageRenderer {
046
047        /**
048         * Construct with the given target image.
049         * 
050         * @param targetImage
051         *            the target image
052         */
053        public ContourRenderer(MBFImage targetImage) {
054                super(targetImage);
055        }
056
057        /**
058         * Utility function to quickly draw the contour to the image.
059         * 
060         * @param imgC
061         *            the target image
062         * @param root
063         *            the contour
064         * @return the target image
065         */
066        public static MBFImage drawContours(MBFImage imgC, Contour root) {
067                new ContourRenderer(imgC).drawContours(root);
068                return imgC;
069        }
070
071        /**
072         * Draw the given contour.
073         * 
074         * @param root
075         *            the contour.
076         */
077        public void drawContours(Contour root) {
078                final List<Contour> toDraw = new ArrayList<Contour>();
079                toDraw.add(root);
080                while (!toDraw.isEmpty()) {
081                        final Contour next = toDraw.remove(toDraw.size() - 1);
082                        Float[] c = null;
083                        switch (next.type) {
084                        case HOLE:
085                                c = RGBColour.BLUE;
086                                break;
087                        case OUTER:
088                                c = RGBColour.RED;
089                                break;
090                        }
091                        this.drawShape(next, 3, c);
092
093                        toDraw.addAll(next.children);
094                }
095        }
096}