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.demos.video.utils; 031 032import java.awt.event.MouseEvent; 033import java.awt.event.MouseListener; 034 035import org.openimaj.image.MBFImage; 036import org.openimaj.image.colour.RGBColour; 037import org.openimaj.image.renderer.MBFImageRenderer; 038import org.openimaj.math.geometry.point.Point2d; 039import org.openimaj.math.geometry.point.Point2dImpl; 040import org.openimaj.math.geometry.shape.Polygon; 041 042/** 043 * {@link MouseListener} that allows users to click 044 * a series of points in an image representing the vertices 045 * of a {@link Polygon}. 046 * 047 * @author Sina Samangooei (ss@ecs.soton.ac.uk) 048 * 049 */ 050public class PolygonDrawingListener implements MouseListener { 051 private Polygon polygon; 052 053 /** 054 * Default constructor 055 */ 056 public PolygonDrawingListener() { 057 this.polygon = new Polygon(); 058 } 059 060 /** 061 * Reset the polygon. 062 */ 063 public void reset() { 064 this.polygon = new Polygon(); 065 } 066 067 @Override 068 public void mouseClicked(MouseEvent arg0) { 069 070 } 071 072 @Override 073 public void mouseEntered(MouseEvent arg0) {} 074 075 @Override 076 public void mouseExited(MouseEvent arg0) {} 077 078 @Override 079 public void mousePressed(MouseEvent arg0) { 080 this.polygon.getVertices().add(new Point2dImpl(arg0.getX(),arg0.getY())); 081 } 082 083 @Override 084 public void mouseReleased(MouseEvent arg0) {} 085 086 /** 087 * @return the polygon created by the user 088 */ 089 public Polygon getPolygon() { 090 return this.polygon; 091 } 092 093 /** 094 * Draw the polygon onto an image. 095 * @param image the image to draw on. 096 */ 097 public void drawPoints(MBFImage image) { 098 Polygon p = getPolygon(); 099 MBFImageRenderer renderer = image.createRenderer(); 100 101 if(p.getVertices().size() > 2) { 102 renderer.drawPolygon(p, 3,RGBColour.RED); 103 } 104 105 for(Point2d point : p.getVertices()) { 106 renderer.drawPoint(point, RGBColour.BLUE, 5); 107 } 108 } 109}