1 /**
2 * Copyright (c) 2011, The University of Southampton and the individual contributors.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * * Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 *
11 * * Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * * Neither the name of the University of Southampton nor the names of its
16 * contributors may be used to endorse or promote products derived from this
17 * software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30 package org.openimaj.image.contour;
31
32 import java.util.ArrayList;
33 import java.util.List;
34
35 import org.openimaj.image.MBFImage;
36 import org.openimaj.image.colour.RGBColour;
37 import org.openimaj.image.renderer.MBFImageRenderer;
38
39 /**
40 * {@link MBFImageRenderer} for drawing {@link Contour}s.
41 *
42 * @author Sina Samnagooei (ss@ecs.soton.ac.uk)
43 *
44 */
45 public class ContourRenderer extends MBFImageRenderer {
46
47 /**
48 * Construct with the given target image.
49 *
50 * @param targetImage
51 * the target image
52 */
53 public ContourRenderer(MBFImage targetImage) {
54 super(targetImage);
55 }
56
57 /**
58 * Utility function to quickly draw the contour to the image.
59 *
60 * @param imgC
61 * the target image
62 * @param root
63 * the contour
64 * @return the target image
65 */
66 public static MBFImage drawContours(MBFImage imgC, Contour root) {
67 new ContourRenderer(imgC).drawContours(root);
68 return imgC;
69 }
70
71 /**
72 * Draw the given contour.
73 *
74 * @param root
75 * the contour.
76 */
77 public void drawContours(Contour root) {
78 final List<Contour> toDraw = new ArrayList<Contour>();
79 toDraw.add(root);
80 while (!toDraw.isEmpty()) {
81 final Contour next = toDraw.remove(toDraw.size() - 1);
82 Float[] c = null;
83 switch (next.type) {
84 case HOLE:
85 c = RGBColour.BLUE;
86 break;
87 case OUTER:
88 c = RGBColour.RED;
89 break;
90 }
91 this.drawShape(next, 3, c);
92
93 toDraw.addAll(next.children);
94 }
95 }
96 }