svn-gvsig-desktop / trunk / libraries / libTopology / src-test / org / gvsig / topology / GeometrySnapperTest.java @ 16396
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1 | 13577 | azabala | /*
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2 | * Created on 05-sep-2007
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3 | *
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4 | * gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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5 | *
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6 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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7 | *
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8 | * This program is free software; you can redistribute it and/or
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9 | * modify it under the terms of the GNU General Public License
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10 | * as published by the Free Software Foundation; either version 2
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11 | * of the License, or (at your option) any later version.
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12 | *
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13 | * This program is distributed in the hope that it will be useful,
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 | * GNU General Public License for more details.
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17 | *
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18 | * You should have received a copy of the GNU General Public License
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19 | * along with this program; if not, write to the Free Software
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20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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21 | *
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22 | * For more information, contact:
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23 | *
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24 | * Generalitat Valenciana
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25 | * Conselleria d'Infraestructures i Transport
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26 | * Av. Blasco Ib??ez, 50
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27 | * 46010 VALENCIA
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28 | * SPAIN
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29 | *
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30 | * +34 963862235
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31 | * gvsig@gva.es
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32 | * www.gvsig.gva.es
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33 | *
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34 | * or
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35 | *
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36 | * IVER T.I. S.A
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37 | * Salamanca 50
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38 | * 46005 Valencia
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39 | * Spain
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40 | *
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41 | * +34 963163400
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42 | * dac@iver.es
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43 | */
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44 | /* CVS MESSAGES:
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45 | *
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46 | * $Id$
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47 | 14152 | azabala | * $Log: GeometrySnapperTest.java,v $
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48 | * Revision 1.2 2007/09/10 14:42:13 azabala
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49 | 13577 | azabala | * *** empty log message ***
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50 | *
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51 | 13602 | azabala | * Revision 1.1 2007/09/06 16:32:02 azabala
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52 | * *** empty log message ***
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53 | 13577 | azabala | *
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54 | 13602 | azabala | *
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55 | 13577 | azabala | */
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56 | package org.gvsig.topology; |
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57 | |||
58 | import java.util.ArrayList; |
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59 | |||
60 | import org.gvsig.jts.GeometrySnapper; |
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61 | |||
62 | import com.vividsolutions.jts.geom.Coordinate; |
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63 | import com.vividsolutions.jts.geom.Geometry; |
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64 | import com.vividsolutions.jts.geom.GeometryFactory; |
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65 | import com.vividsolutions.jts.geom.LineString; |
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66 | import com.vividsolutions.jts.io.ParseException; |
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67 | import com.vividsolutions.jts.io.WKTReader; |
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68 | |||
69 | |||
70 | import junit.framework.TestCase; |
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71 | |||
72 | public class GeometrySnapperTest extends TestCase { |
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73 | |||
74 | GeometryFactory factory = new GeometryFactory();
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75 | WKTReader wktReader = new WKTReader(factory);
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76 | |||
77 | |||
78 | public void tearDown() throws Exception{ |
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79 | super.tearDown();
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80 | factory = null;
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81 | wktReader = null;
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82 | System.gc();
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83 | } |
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84 | |||
85 | public void testAverageSnap1(){ |
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86 | Coordinate coord1 = new Coordinate(0, 0); |
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87 | Coordinate coord2 = new Coordinate(100, 100); |
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88 | Coordinate coord3 = new Coordinate(200, 200); |
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89 | ArrayList coords = new ArrayList(); |
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90 | coords.add(coord1); |
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91 | coords.add(coord2); |
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92 | coords.add(coord3); |
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93 | int[] weights = {1,1,1};//all coordinates with the same weight |
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94 | |||
95 | GeometrySnapper snapper = new GeometrySnapper(0.1d); |
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96 | Coordinate averageCoord = snapper.snapAverage(coords, weights); |
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97 | |||
98 | assertTrue(averageCoord.x == (0 + 100 + 200)/3); |
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99 | |||
100 | |||
101 | int[] weights2 = {1,2,2, 1};//first coordinate with double weight |
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102 | coords.add(new Coordinate(0.5, 1.27)); |
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103 | averageCoord = snapper.snapAverage(coords, weights2); |
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104 | //snapped point is nearest to the coord with higher weight
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105 | assertTrue(coord1.distance(averageCoord) < coord3.distance(averageCoord)); |
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106 | } |
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107 | |||
108 | 13602 | azabala | |
109 | 13577 | azabala | public void testSnapManyGeometries() throws ParseException{ |
110 | String linestring1 = "LINESTRING (280 80, 380 240, 620 360, 820 220, 600 140, 560 240, 420 180)"; |
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111 | String linestring2 = "LINESTRING (280.001 79.999, 420.21 179.999)"; |
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112 | |||
113 | LineString geo1 = (LineString) wktReader.read(linestring1); |
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114 | LineString geo2 = (LineString) wktReader.read(linestring2); |
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115 | |||
116 | GeometrySnapper snapper = new GeometrySnapper(0.6); |
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117 | LineString[] geometries = {geo1, geo2};
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118 | int[] weights = {1,0}; |
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119 | Geometry[] snappedGeometries = snapper.snap(geometries, weights);
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120 | for(int i = 0; i < snappedGeometries.length; i++){ |
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121 | System.out.println(snappedGeometries[i].toText());
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122 | } |
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123 | LineString geo2orig = (LineString) wktReader.read(linestring2); |
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124 | assertTrue(!geo2orig.equals(geo1)); |
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125 | } |
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126 | |||
127 | |||
128 | |||
129 | } |