Revision 10626 trunk/extensions/extGeoProcessing/src/com/iver/cit/gvsig/geoprocess/impl/clip/fmap/ClipVisitor.java
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* |
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* $Id$ |
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* $Log$ |
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* Revision 1.2 2006-07-21 09:10:34 azabala |
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* Revision 1.3 2007-03-06 16:47:58 caballero |
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* Exceptions |
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* |
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* Revision 1.2 2006/07/21 09:10:34 azabala |
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* fixed bug 608: user doesnt enter any result file to the geoprocess panel |
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* |
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* Revision 1.1 2006/06/20 18:20:45 azabala |
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*/ |
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package com.iver.cit.gvsig.geoprocess.impl.clip.fmap; |
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import com.iver.cit.gvsig.fmap.DriverException; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.hardcode.gdbms.driver.exceptions.SchemaEditionException; |
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import com.iver.cit.gvsig.exceptions.visitors.ProcessVisitorException; |
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import com.iver.cit.gvsig.exceptions.visitors.StartVisitorException; |
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import com.iver.cit.gvsig.exceptions.visitors.VisitorException; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.drivers.ITableDefinition; |
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import com.iver.cit.gvsig.fmap.edition.EditionException; |
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import com.iver.cit.gvsig.fmap.edition.ISchemaManager; |
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import com.iver.cit.gvsig.fmap.edition.IWriter; |
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import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.AlphanumericData; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.VectorialData; |
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import com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor; |
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import com.iver.cit.gvsig.fmap.operations.strategies.VisitException; |
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import com.iver.cit.gvsig.geoprocess.core.fmap.FeaturePersisterProcessor; |
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import com.iver.cit.gvsig.geoprocess.core.util.GeometryUtil; |
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import com.vividsolutions.jts.geom.Geometry; |
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* with the convex hull of another layer. |
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* If the geometry of the feature analyzed doesnt intersect with the convex |
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* hull geometry, the clipvisitor will ignore it. |
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*
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* |
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* It intersects, computes intersection and creates a new feature with |
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* the same attributes and the new intersection geometry. |
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* @author azabala |
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* |
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*/ |
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public class ClipVisitor implements FeatureVisitor {
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/** |
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* Clipping geometry: the convex hull of the |
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* clipping layer |
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* Processes individual clip results |
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*/ |
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private FeaturePersisterProcessor resultProcessor; |
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/** |
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* If its different of null manages user selection (discarting any |
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* feature else) |
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* Constructor. It requires clipping geometry. |
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* @param clippingGeometry |
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*/ |
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public ClipVisitor(Geometry clippingGeometry,
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public ClipVisitor(Geometry clippingGeometry, |
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ITableDefinition layerDefinition, |
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ISchemaManager schemaManager, |
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IWriter writer){
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this.clippingConvexHull = clippingGeometry; |
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try {
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this.resultProcessor = new FeaturePersisterProcessor(layerDefinition, |
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schemaManager,writer); |
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} catch (EditionException e) {
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// TODO Auto-generated catch block |
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e.printStackTrace(); |
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} |
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try {
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this.resultProcessor = new FeaturePersisterProcessor(layerDefinition, |
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schemaManager,writer); |
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} catch (SchemaEditionException e) {
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// TODO Auto-generated catch block |
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e.printStackTrace(); |
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} catch (VisitorException e) {
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// TODO Auto-generated catch block |
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e.printStackTrace(); |
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} |
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} |
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public void setSelection(FBitSet selection){
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this.selection = selection; |
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} |
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/** |
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* clips feature's geometry with the clipping geometry, preserving |
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* feature's original attributes. |
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* If feature's geometry doesnt touch clipping geometry, it will be |
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* ignored. |
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*/ |
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public void visit(IGeometry g, int index) throws VisitException {
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public void visit(IGeometry g, int index) throws VisitorException, ProcessVisitorException {
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//TODO METER EL PRINCIPIO Y EL FINAL EN EL VISITOR ABSTRACTO |
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//AS?, TENDRIAMOS LA GESTI?N TOPOL?GICA EN CADA VISITOR |
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if(g == null) |
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return; |
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if(selection != null){
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* TODO En este caso, la de recorte chequearla al principio |
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* (cuando se calcula) y solo chequearemos las de entrada |
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* conforme nos van viniendo. |
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*
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* |
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* HAY QUE CREAR UN FRAMEWORK DE CORRECCI?N TOPOL?GICA DE |
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* GEOMETRIAS: |
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* -Mirando autointersecciones. |
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resultProcessor.processJtsGeometry(newGeom, index); |
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}catch(com.vividsolutions.jts.geom.TopologyException ee){
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ee.printStackTrace(); |
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} catch (ReadDriverException ee) {
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// TODO Auto-generated catch block |
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ee.printStackTrace(); |
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}; |
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}//catch |
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} catch (ReadDriverException e) {
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// TODO Auto-generated catch block |
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e.printStackTrace(); |
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} |
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}//if |
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} |
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public void stop(FLayer layer) {
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public void stop(FLayer layer) throws VisitorException {
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resultProcessor.finish(); |
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} |
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public boolean start(FLayer layer) {
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public boolean start(FLayer layer) throws StartVisitorException {
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if(layer instanceof AlphanumericData && layer instanceof VectorialData){
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try {
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this.recordset = ((AlphanumericData)layer).getRecordset(); |
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this.resultProcessor.setSelectableDataSource(recordset); |
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} catch (DriverException e) {
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return false;//must we throw an Exception??
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} catch (ReadDriverException e) {
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return false; |
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} |
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return true; |
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} |
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public void setRecordset(SelectableDataSource recordset) {
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this.recordset = recordset; |
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} |
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public String getProcessDescription() {
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return "Clipping features agaisnt a clip geometry"; |
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} |
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