gvsig-geoprocess / org.gvsig.geoprocess / trunk / org.gvsig.geoprocess / org.gvsig.geoprocess.algorithm / org.gvsig.geoprocess.algorithm.difference / src / main / java / org / gvsig / geoprocess / algorithm / difference / DifferenceAlgorithm.java @ 335
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2012 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.geoprocess.algorithm.difference; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.feature.FeatureSet; |
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import org.gvsig.fmap.dal.feature.FeatureStore; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.geoprocess.algorithm.base.core.GeometryOperation; |
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import org.gvsig.geoprocess.algorithm.base.core.ScalableUnionOperation; |
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import org.gvsig.geoprocess.lib.sextante.AbstractSextanteGeoProcess; |
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import org.gvsig.geoprocess.lib.sextante.dataObjects.FlyrVectIVectorLayer; |
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import es.unex.sextante.core.Sextante; |
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import es.unex.sextante.dataObjects.IVectorLayer; |
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import es.unex.sextante.exceptions.GeoAlgorithmExecutionException; |
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import es.unex.sextante.exceptions.RepeatedParameterNameException; |
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import es.unex.sextante.outputs.OutputVectorLayer; |
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/**
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* Difference algorithm
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* @author <a href="mailto:nachobrodin@gmail.com">Nacho Brodin</a>
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*/
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public class DifferenceAlgorithm extends AbstractSextanteGeoProcess { |
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public static final String RESULT_POL = "RESULT_POL"; |
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public static final String RESULT_POINT = "RESULT_POINT"; |
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public static final String RESULT_LINE = "RESULT_LINE"; |
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public static final String LAYER = "LAYER"; |
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public static final String DIF = "DIF"; |
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public static final String CHECK_INPUT = "CHECK_INPUT"; |
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public static final String CHECK_OUTPUT = "CHECK_OUTPUT"; |
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public void defineCharacteristics(){ |
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setName(getTranslation("Difference"));
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setGroup(getTranslation("basic_vect_algorithms"));
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// setGeneratesUserDefinedRasterOutput(false);
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try {
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m_Parameters.addInputVectorLayer(LAYER, getTranslation("Input_layer"),
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IVectorLayer.SHAPE_TYPE_WRONG, |
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true);
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m_Parameters.addInputVectorLayer(DIF, getTranslation("Overlays_layer"),
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IVectorLayer.SHAPE_TYPE_WRONG, |
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true);
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m_Parameters.addBoolean(CHECK_INPUT, |
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getTranslation("Selected_geometries_input_layer"), false); |
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m_Parameters.addBoolean(CHECK_OUTPUT, |
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getTranslation("Selected_geometries_input_layer"), false); |
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} catch (RepeatedParameterNameException e) {
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Sextante.addErrorToLog(e); |
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} |
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addOutputVectorLayer(RESULT_POL, getTranslation("Difference_polygon"),
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OutputVectorLayer.SHAPE_TYPE_POLYGON); |
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addOutputVectorLayer(RESULT_LINE, getTranslation("Difference_line"),
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OutputVectorLayer.SHAPE_TYPE_LINE); |
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addOutputVectorLayer(RESULT_POINT, getTranslation("Difference_point"),
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OutputVectorLayer.SHAPE_TYPE_POINT); |
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} |
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/*
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* (non-Javadoc)
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* @see es.unex.sextante.core.GeoAlgorithm#processAlgorithm()
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*/
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public boolean processAlgorithm() throws GeoAlgorithmExecutionException { |
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if(existsOutPutFile(RESULT_POL, 0) || |
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existsOutPutFile(RESULT_LINE, 0) ||
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existsOutPutFile(RESULT_POINT, 0)) {
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throw new GeoAlgorithmExecutionException(getTranslation("file_exists")); |
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} |
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org.gvsig.fmap.geom.Geometry overlayGeometry = null;
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IVectorLayer dif = m_Parameters.getParameterValueAsVectorLayer(DIF); |
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IVectorLayer layer = m_Parameters.getParameterValueAsVectorLayer(LAYER); |
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boolean selectedGeomInput = m_Parameters.getParameter(CHECK_INPUT).getParameterValueAsBoolean();
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boolean selectedGeomOutput = m_Parameters.getParameter(CHECK_OUTPUT).getParameterValueAsBoolean();
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try {
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overlayGeometry = ScalableUnionOperation.joinLayerGeometries(dif, selectedGeomOutput); |
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} catch (Exception e) { |
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Sextante.addErrorToLog(e); |
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return false; |
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} |
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FeatureStore storeLayer = null;
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if(layer instanceof FlyrVectIVectorLayer) |
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storeLayer = ((FlyrVectIVectorLayer)layer).getFeatureStore(); |
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else
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return false; |
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try {
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FeatureSet features = null;
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features = storeLayer.getFeatureSet(); |
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FeatureType featureType = features.getDefaultFeatureType(); |
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GeometryOperation operation = new DifferenceOperation(overlayGeometry, this); |
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operation.setTaskStatus(getStatus()); |
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if (isPolygon(storeLayer) || isUndefined(storeLayer)) {
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FeatureStore outFeatStore = |
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buildOutPutStore(featureType, IVectorLayer.SHAPE_TYPE_POLYGON, |
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getTranslation("Difference_polygon"), RESULT_POL);
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operation.computesGeometryOperation(storeLayer, outFeatStore, |
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attrNames, selectedGeomInput, selectedGeomOutput, true);
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} else {
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buildOutPutStore(featureType, IVectorLayer.SHAPE_TYPE_POLYGON, |
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getTranslation("Null_polygon"), RESULT_POL);
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} |
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if (isLine(storeLayer) || isUndefined(storeLayer)) {
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FeatureStore outFeatStore = |
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buildOutPutStore(featureType, IVectorLayer.SHAPE_TYPE_LINE, |
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getTranslation("Difference_line"), RESULT_LINE);
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operation.computesGeometryOperation(storeLayer, outFeatStore, |
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attrNames, selectedGeomInput, selectedGeomOutput, true);
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} else {
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buildOutPutStore(featureType.getCopy(), IVectorLayer.SHAPE_TYPE_LINE, |
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getTranslation("Null_line"), RESULT_LINE);
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} |
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if (isPoint(storeLayer) || isUndefined(storeLayer)) {
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FeatureStore outFeatStore = |
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buildOutPutStore(featureType.getCopy(), IVectorLayer.SHAPE_TYPE_POINT, |
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getTranslation("Difference_point"), RESULT_POINT);
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operation.computesGeometryOperation(storeLayer, outFeatStore, |
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attrNames, selectedGeomInput, selectedGeomOutput, true);
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} else {
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buildOutPutStore(featureType.getCopy(), IVectorLayer.SHAPE_TYPE_POINT, |
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getTranslation("Null_point"), RESULT_POINT);
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} |
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} catch (DataException e) {
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Sextante.addErrorToLog(e); |
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return false; |
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} |
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if(getTaskMonitor().isCanceled())
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return false; |
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return true; |
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} |
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} |