gvsig-geoprocess / org.gvsig.geoprocess / trunk / org.gvsig.geoprocess / org.gvsig.geoprocess.algorithm / org.gvsig.geoprocess.algorithm.clip / src / main / java / org / gvsig / geoprocess / algorithm / clip / ClipOperation.java @ 252
History | View | Annotate | Download (6.34 KB)
| 1 |
/**
|
|---|---|
| 2 |
* gvSIG. Desktop Geographic Information System.
|
| 3 |
*
|
| 4 |
* Copyright (C) 2007-2012 gvSIG Association.
|
| 5 |
*
|
| 6 |
* This program is free software; you can redistribute it and/or
|
| 7 |
* modify it under the terms of the GNU General Public License
|
| 8 |
* as published by the Free Software Foundation; either version 2
|
| 9 |
* of the License, or (at your option) any later version.
|
| 10 |
*
|
| 11 |
* This program is distributed in the hope that it will be useful,
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 14 |
* GNU General Public License for more details.
|
| 15 |
*
|
| 16 |
* You should have received a copy of the GNU General Public License
|
| 17 |
* along with this program; if not, write to the Free Software
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
| 19 |
* MA 02110-1301, USA.
|
| 20 |
*
|
| 21 |
* For any additional information, do not hesitate to contact us
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com.
|
| 23 |
*/
|
| 24 |
/*
|
| 25 |
|
| 26 |
* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
| 27 |
*
|
| 28 |
* Copyright (C) 2010 Generalitat Valenciana.
|
| 29 |
*
|
| 30 |
* This program is free software; you can redistribute it and/or
|
| 31 |
* modify it under the terms of the GNU General Public License
|
| 32 |
* as published by the Free Software Foundation; either version 2
|
| 33 |
* of the License, or (at your option) any later version.
|
| 34 |
*
|
| 35 |
* This program is distributed in the hope that it will be useful,
|
| 36 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 37 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 38 |
* GNU General Public License for more details.
|
| 39 |
*
|
| 40 |
* You should have received a copy of the GNU General Public License
|
| 41 |
* along with this program; if not, write to the Free Software
|
| 42 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 43 |
*/
|
| 44 |
|
| 45 |
package org.gvsig.geoprocess.algorithm.clip; |
| 46 |
|
| 47 |
import org.gvsig.fmap.dal.exception.DataException; |
| 48 |
import org.gvsig.fmap.dal.feature.EditableFeature; |
| 49 |
import org.gvsig.fmap.dal.feature.Feature; |
| 50 |
import org.gvsig.fmap.geom.exception.CreateGeometryException; |
| 51 |
import org.gvsig.geoprocess.algorithm.base.core.GeometryOperation; |
| 52 |
import org.gvsig.geoprocess.algorithm.base.util.GeometryUtil; |
| 53 |
|
| 54 |
import com.vividsolutions.jts.geom.Geometry; |
| 55 |
|
| 56 |
import es.unex.sextante.core.Sextante; |
| 57 |
/**
|
| 58 |
* This class analyzes all features of a layer, clipping its geometries
|
| 59 |
* with the convex hull of another layer.
|
| 60 |
* If the geometry of the feature analyzed doesnt intersect with the convex
|
| 61 |
* hull geometry, the clipvisitor will ignore it.
|
| 62 |
*
|
| 63 |
* It intersects, computes intersection and creates a new feature with
|
| 64 |
* the same attributes and the new intersection geometry.
|
| 65 |
*
|
| 66 |
* @author Nacho Brodin (nachobrodin@gmail.com)
|
| 67 |
*/
|
| 68 |
public class ClipOperation extends GeometryOperation { |
| 69 |
|
| 70 |
/**
|
| 71 |
* Clipping geometry: the convex hull of the
|
| 72 |
* clipping layer
|
| 73 |
*/
|
| 74 |
private Geometry clippingConvexHull = null; |
| 75 |
|
| 76 |
public ClipOperation(org.gvsig.fmap.geom.Geometry clip) {
|
| 77 |
this.clippingConvexHull = GeometryUtil.geomToJTS(clip);
|
| 78 |
} |
| 79 |
|
| 80 |
/**
|
| 81 |
* clips feature's geometry with the clipping geometry, preserving
|
| 82 |
* feature's original attributes.
|
| 83 |
* If feature's geometry doesnt touch clipping geometry, it will be
|
| 84 |
* ignored.
|
| 85 |
*/
|
| 86 |
public EditableFeature invoke(org.gvsig.fmap.geom.Geometry g, Feature feature) {
|
| 87 |
if(g == null) |
| 88 |
return lastEditFeature;
|
| 89 |
|
| 90 |
Geometry jtsGeom = GeometryUtil.geomToJTS(g); |
| 91 |
|
| 92 |
if(!jtsGeom.getEnvelope().intersects(clippingConvexHull.getEnvelope()))
|
| 93 |
return lastEditFeature;
|
| 94 |
|
| 95 |
if(jtsGeom.intersects(clippingConvexHull)) {
|
| 96 |
try {
|
| 97 |
Geometry newGeom = jtsGeom.intersection(clippingConvexHull); |
| 98 |
lastEditFeature = persister.addFeature(feature, newGeom); |
| 99 |
} catch(com.vividsolutions.jts.geom.TopologyException e){
|
| 100 |
Sextante.addErrorToLog(e); |
| 101 |
if(! jtsGeom.isValid()) {
|
| 102 |
System.out.println("La geometria de entrada no es valida"); |
| 103 |
jtsGeom = GeometryUtil.removeDuplicatesFrom(jtsGeom); |
| 104 |
} |
| 105 |
if(! clippingConvexHull.isValid()) {
|
| 106 |
System.out.println("La geometria de recorte no es valida"); |
| 107 |
clippingConvexHull = GeometryUtil.removeDuplicatesFrom(clippingConvexHull); |
| 108 |
} |
| 109 |
try {
|
| 110 |
Geometry newGeom = jtsGeom.intersection(clippingConvexHull); |
| 111 |
lastEditFeature = persister.addFeature(feature, newGeom); |
| 112 |
} catch(com.vividsolutions.jts.geom.TopologyException ee){
|
| 113 |
Sextante.addErrorToLog(ee); |
| 114 |
} catch (CreateGeometryException ee) {
|
| 115 |
Sextante.addErrorToLog(ee); |
| 116 |
} catch (DataException ee) {
|
| 117 |
Sextante.addErrorToLog(ee); |
| 118 |
} |
| 119 |
} catch (CreateGeometryException e) {
|
| 120 |
Sextante.addErrorToLog(e); |
| 121 |
} catch (DataException e) {
|
| 122 |
Sextante.addErrorToLog(e); |
| 123 |
} |
| 124 |
} |
| 125 |
return lastEditFeature;
|
| 126 |
} |
| 127 |
|
| 128 |
/**
|
| 129 |
* clips feature's geometry with the clipping geometry, preserving
|
| 130 |
* feature's original attributes.
|
| 131 |
* If feature's geometry doesnt touch clipping geometry, it will be
|
| 132 |
* ignored.
|
| 133 |
*/
|
| 134 |
public void invoke(org.gvsig.fmap.geom.Geometry g, EditableFeature feature) { |
| 135 |
if(g == null) |
| 136 |
return;
|
| 137 |
|
| 138 |
lastEditFeature = feature; |
| 139 |
|
| 140 |
Geometry jtsGeom = GeometryUtil.geomToJTS(g); |
| 141 |
|
| 142 |
if(!jtsGeom.getEnvelope().intersects(clippingConvexHull.getEnvelope()))
|
| 143 |
return;
|
| 144 |
|
| 145 |
if(jtsGeom.intersects(clippingConvexHull)) {
|
| 146 |
try {
|
| 147 |
Geometry newGeom = jtsGeom.intersection(clippingConvexHull); |
| 148 |
persister.addFeature(feature, newGeom); |
| 149 |
} catch(com.vividsolutions.jts.geom.TopologyException e){
|
| 150 |
Sextante.addErrorToLog(e); |
| 151 |
if(! jtsGeom.isValid()) {
|
| 152 |
System.out.println("La geometria de entrada no es valida"); |
| 153 |
jtsGeom = GeometryUtil.removeDuplicatesFrom(jtsGeom); |
| 154 |
} |
| 155 |
if(! clippingConvexHull.isValid()) {
|
| 156 |
System.out.println("La geometria de recorte no es valida"); |
| 157 |
clippingConvexHull = GeometryUtil.removeDuplicatesFrom(clippingConvexHull); |
| 158 |
} |
| 159 |
try {
|
| 160 |
Geometry newGeom = jtsGeom.intersection(clippingConvexHull); |
| 161 |
persister.addFeature(feature, newGeom); |
| 162 |
} catch(com.vividsolutions.jts.geom.TopologyException ee){
|
| 163 |
Sextante.addErrorToLog(ee); |
| 164 |
} catch (CreateGeometryException ee) {
|
| 165 |
Sextante.addErrorToLog(ee); |
| 166 |
} catch (DataException ee) {
|
| 167 |
Sextante.addErrorToLog(ee); |
| 168 |
} |
| 169 |
} catch (CreateGeometryException e) {
|
| 170 |
Sextante.addErrorToLog(e); |
| 171 |
} catch (DataException e) {
|
| 172 |
Sextante.addErrorToLog(e); |
| 173 |
} |
| 174 |
} |
| 175 |
} |
| 176 |
|
| 177 |
/**
|
| 178 |
* Ends the edition and closes the FeatureStore
|
| 179 |
*/
|
| 180 |
public void end() { |
| 181 |
persister.end(); |
| 182 |
} |
| 183 |
|
| 184 |
public String getProcessDescription() { |
| 185 |
return "Clipping features agaisnt a clip geometry"; |
| 186 |
} |
| 187 |
} |
| 188 |
|