svn-gvsig-desktop / trunk / libraries / libTopology / src / org / gvsig / topology / errorfixes / SplitSelfIntersectingPolygonFix.java @ 24074
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1 | 20348 | azabala | /*
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2 | * Created on 10-abr-2006
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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 | * $Log:
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48 | */
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49 | package org.gvsig.topology.errorfixes; |
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50 | |||
51 | import java.util.ArrayList; |
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52 | import java.util.Arrays; |
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53 | import java.util.List; |
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54 | |||
55 | import org.gvsig.exceptions.BaseException; |
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56 | 23039 | azabala | import org.gvsig.fmap.core.NewFConverter; |
57 | 20348 | azabala | import org.gvsig.jts.JtsUtil; |
58 | import org.gvsig.jts.SnapLineStringSelfIntersectionChecker; |
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59 | import org.gvsig.topology.Messages; |
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60 | import org.gvsig.topology.TopologyError; |
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61 | |||
62 | import com.hardcode.gdbms.engine.values.Value; |
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63 | import com.iver.cit.gvsig.fmap.core.DefaultFeature; |
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64 | import com.iver.cit.gvsig.fmap.core.FMultiPoint2D; |
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65 | import com.iver.cit.gvsig.fmap.core.IFeature; |
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66 | import com.iver.cit.gvsig.fmap.core.IGeometry; |
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67 | import com.vividsolutions.jts.geom.Geometry; |
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68 | import com.vividsolutions.jts.geom.LinearRing; |
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69 | import com.vividsolutions.jts.geom.MultiPoint; |
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70 | import com.vividsolutions.jts.geom.Polygon; |
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71 | |||
72 | public class SplitSelfIntersectingPolygonFix extends SplitSelfIntersectingLineFix { |
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73 | |||
74 | |||
75 | 23039 | azabala | public List<IFeature>[] fixAlgorithm(TopologyError error) throws BaseException { |
76 | 20348 | azabala | double clusterTolerance = error.getTopology().getClusterTolerance();
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77 | |||
78 | IGeometry selfIntersectingPoints = error.getGeometry(); |
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79 | FMultiPoint2D shape = (FMultiPoint2D) selfIntersectingPoints. |
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80 | getInternalShape(); |
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81 | |||
82 | 23039 | azabala | MultiPoint selfIntersections = (MultiPoint)NewFConverter.toJtsGeometry(shape); |
83 | 20348 | azabala | |
84 | IFeature originFeature = error.getFeature1(); |
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85 | Value[] attributes = originFeature.getAttributes();
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86 | IGeometry originGeometry = originFeature.getGeometry(); |
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87 | Geometry jtsGeo = originGeometry.toJTSGeometry(); |
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88 | |||
89 | Polygon[] polygons = JtsUtil.extractPolygons(jtsGeo); |
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90 | for(int i = 0; i < polygons.length; i++){ |
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91 | Polygon polygon = polygons[i];
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92 | |||
93 | if(!polygon.disjoint(selfIntersections)){
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94 | |||
95 | List<LinearRing> shells = new ArrayList<LinearRing>(); |
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96 | List<LinearRing> holes = new ArrayList<LinearRing>(); |
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97 | |||
98 | LinearRing shell = (LinearRing) polygon.getExteriorRing(); |
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99 | SnapLineStringSelfIntersectionChecker checker = |
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100 | new SnapLineStringSelfIntersectionChecker(shell, clusterTolerance);
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101 | Geometry[] splittedGeometries = checker.clean();
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102 | |||
103 | 21287 | azabala | // shells.addAll((Collection<? extends LinearRing>) Arrays.asList(splittedGeometries));
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104 | for(int k = 0; k < splittedGeometries.length; k++){ |
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105 | shells.add((LinearRing)splittedGeometries[k]); |
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106 | } |
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107 | 20348 | azabala | |
108 | 21287 | azabala | |
109 | 20348 | azabala | for(int j = 0; j < polygon.getNumInteriorRing(); j++){ |
110 | LinearRing hole = (LinearRing) polygon.getInteriorRingN(j); |
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111 | checker = new SnapLineStringSelfIntersectionChecker(hole,
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112 | clusterTolerance); |
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113 | splittedGeometries = checker.clean(); |
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114 | |||
115 | 21287 | azabala | // shells.addAll((Collection<? extends LinearRing>) Arrays.asList(splittedGeometries));
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116 | for(int k = 0; k < splittedGeometries.length; k++){ |
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117 | shells.add((LinearRing)splittedGeometries[k]); |
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118 | } |
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119 | 20348 | azabala | } |
120 | |||
121 | Geometry editedGeometry = JtsUtil.buildPolygons(shells, holes); |
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122 | Polygon[] correctedPolygons = JtsUtil.extractPolygons(editedGeometry); |
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123 | IFeature[] newFeatures = new IFeature[correctedPolygons.length]; |
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124 | |||
125 | for(int j = 0; j < correctedPolygons.length; j++){ |
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126 | Polygon pol = correctedPolygons[j];
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127 | 23039 | azabala | IGeometry igeom = NewFConverter.toFMap(pol); |
128 | 20348 | azabala | newFeatures[j] = new DefaultFeature(igeom,
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129 | attributes, |
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130 | originFeature.getID()+j); |
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131 | } |
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132 | 23039 | azabala | List<IFeature> editedFeatures = new ArrayList<IFeature>(); |
133 | editedFeatures.addAll(Arrays.asList(newFeatures));
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134 | return (List<IFeature>[]) new List[]{editedFeatures}; |
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135 | 20348 | azabala | }//if ! disjoints
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136 | } |
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137 | return null; |
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138 | } |
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139 | |||
140 | |||
141 | public String getEditionDescription() { |
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142 | return Messages.getText("SPLIT_SELFINTERSECTING_POLYGON_FIX"); |
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143 | } |
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144 | |||
145 | } |