Revision 4447 trunk/extensions/extGeoProcessing/src/com/iver/gvsig/geoprocessing/impl/clip/ClipGeoprocess.java
| ClipGeoprocess.java | ||
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* |
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* +34 963163400 |
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* dac@iver.es |
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*/ |
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/* CVS MESSAGES: |
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* |
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* $Id$ |
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* $Log$ |
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* Revision 1.7 2006-03-14 18:32:46 fjp |
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* Revision 1.8 2006-03-15 18:30:39 azabala |
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* *** empty log message *** |
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* |
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* Revision 1.7 2006/03/14 18:32:46 fjp |
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* Cambio con LayerDefinition para que sea compatible con la definici?n de tablas tambi?n. |
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* |
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* Revision 1.6 2006/03/07 21:01:33 azabala |
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import com.iver.cit.gvsig.fmap.core.IFeature; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.drivers.DriverIOException; |
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import com.iver.cit.gvsig.fmap.drivers.ILayerDefinition; |
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import com.iver.cit.gvsig.fmap.drivers.ITableDefinition; |
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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.FLyrVect; |
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import com.iver.cit.gvsig.fmap.operations.CancellableMonitorable; |
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import com.iver.cit.gvsig.fmap.operations.DefaultCancellableMonitorable; |
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import com.iver.cit.gvsig.fmap.operations.strategies.Strategy; |
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import com.iver.cit.gvsig.fmap.operations.strategies.StrategyManager; |
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import com.iver.cit.gvsig.fmap.operations.strategies.VisitException; |
| ... | ... | |
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import com.iver.gvsig.geoprocessing.model.IOverlayGeoprocess; |
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import com.iver.gvsig.geoprocessing.schemabuilder.DefinitionUtils; |
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import com.iver.gvsig.geoprocessing.schemabuilder.XTypes; |
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import com.iver.utiles.swing.threads.IMonitorableTask; |
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import com.vividsolutions.jts.geom.Geometry; |
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/** |
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* A clip between two layers is the intersection |
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* of the first layer with the convex hull |
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* of the second layer. |
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* A clip between two layers is the intersection of the first layer with the |
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* convex hull of the second layer. |
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* |
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* It is an individual case of OverlayGeoprocess. |
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* When we would have piped geoprocesses, we could
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* model it like a pipe of a ConvexHull geoprocess and
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* an intersection geoprocess.
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* It is an individual case of OverlayGeoprocess. When we would have piped
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* geoprocesses, we could model it like a pipe of a ConvexHull geoprocess and an
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* intersection geoprocess.
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* |
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* @author azabala |
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* |
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*
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*/ |
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public class ClipGeoprocess extends AbstractGeoprocess |
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implements IOverlayGeoprocess {
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public class ClipGeoprocess extends AbstractGeoprocess implements
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IOverlayGeoprocess {
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/** |
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* overlay layer |
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*/ |
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private FLyrVect overlayLayer; |
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/** |
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* Schema of the result layer |
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*/ |
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private ILayerDefinition resultLayerDefinition; |
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/** |
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* flag to only clip selection of input layer |
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*/ |
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private boolean onlyFirstLayerSelection = false; |
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/** |
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* flag to only clip with selection of clipping layer |
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*/ |
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private boolean onlyClipLayerSelection = false; |
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/** |
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* processes input layer's features to clip its geometries |
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* with clipping layer bounding box
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* processes input layer's features to clip its geometries with clipping
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* layer bounding box |
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*/ |
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private ClipVisitor visitor; |
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/** |
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* Constructor
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* |
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* Constructor |
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*
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*/ |
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public ClipGeoprocess(FLyrVect inputLayer){
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public ClipGeoprocess(FLyrVect inputLayer) {
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setFirstOperand(inputLayer); |
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} |
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public void setSecondOperand(FLyrVect secondLayer) {
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this.overlayLayer = secondLayer; |
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|
| ... | ... | |
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} |
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public void setParameters(Map params) throws GeoprocessException {
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Boolean firstLayerSelection = (Boolean) params.get("firstlayerselection");
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if(firstLayerSelection != null) |
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Boolean firstLayerSelection = (Boolean) params |
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.get("firstlayerselection");
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if (firstLayerSelection != null) |
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this.onlyFirstLayerSelection = firstLayerSelection.booleanValue(); |
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Boolean secondLayerSelection = (Boolean) params.get("secondlayerselection");
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if(secondLayerSelection != null) |
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Boolean secondLayerSelection = (Boolean) params |
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.get("secondlayerselection");
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if (secondLayerSelection != null) |
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this.onlyClipLayerSelection = secondLayerSelection.booleanValue(); |
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} |
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|
| ... | ... | |
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throw new GeoprocessException("Clip: capa de entrada a null");
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if (overlayLayer == null) |
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throw new GeoprocessException("Clip: capa de clip a null");
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if(this.writer == null ||
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this.schemaManager == null){
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throw new GeoprocessException("Operacion de clip sin especificar capa de resultados");
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if (this.writer == null || this.schemaManager == null) {
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throw new GeoprocessException(
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"Operacion de clip sin especificar capa de resultados");
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} |
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try {
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if(overlayLayer.getShapeType() != XTypes.POLYGON){
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throw new GeoprocessException("La capa de recorte no es de pol?gonos");
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if (overlayLayer.getShapeType() != XTypes.POLYGON) {
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throw new GeoprocessException( |
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"La capa de recorte no es de pol?gonos"); |
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} |
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} catch (com.iver.cit.gvsig.fmap.DriverException e) {
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throw new GeoprocessException("Error al tratar de chequear si la capa de recorte es de pol?gonos");
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throw new GeoprocessException( |
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"Error al tratar de chequear si la capa de recorte es de pol?gonos"); |
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} |
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} |
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public void process() throws GeoprocessException {
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Geometry clippingGeometry = null; |
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try {
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clippingGeometry = computeJtsClippingPoly(); |
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clippingGeometry = computeJtsClippingPoly(null);
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} catch (Exception e) {
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throw new GeoprocessException("Error calculando el convex hull de la clipping layer");
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throw new GeoprocessException( |
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"Error calculando el convex hull de la clipping layer"); |
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} |
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visitor = new ClipVisitor(clippingGeometry, |
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resultLayerDefinition, |
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schemaManager, |
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writer); |
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Strategy strategy = StrategyManager. |
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getStrategy(firstLayer); |
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visitor = new ClipVisitor(clippingGeometry, resultLayerDefinition, |
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schemaManager, writer); |
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Strategy strategy = StrategyManager.getStrategy(firstLayer); |
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try {
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if(onlyFirstLayerSelection){
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strategy.process(visitor, |
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firstLayer.getRecordset(). |
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getSelection()); |
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}else{
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if (onlyFirstLayerSelection) {
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strategy.process(visitor, firstLayer.getRecordset() |
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.getSelection()); |
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} else {
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strategy.process(visitor); |
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} |
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} catch (Exception e) {
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throw new GeoprocessException("Problemas al leer los datos de la capa a clipear");
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throw new GeoprocessException( |
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"Problemas al leer los datos de la capa a clipear"); |
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} |
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} |
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|
| ... | ... | |
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} |
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public ILayerDefinition createLayerDefinition() {
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//result layer definition will be the same that |
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//input layer |
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if(resultLayerDefinition == null){
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try {
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resultLayerDefinition = DefinitionUtils.
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createLayerDefinition(firstLayer); |
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resultLayerDefinition = DefinitionUtils |
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.createLayerDefinition(firstLayer);
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} catch (Exception e) {
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//TODO Quizas createLayerDefinition deberia lanzar |
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//una excepcion |
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// TODO Quizas createLayerDefinition deberia lanzar
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// una excepcion
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e.printStackTrace(); |
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} |
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} |
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return resultLayerDefinition; |
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} |
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private Geometry computeJtsClippingPoly() throws com.iver.cit.gvsig.fmap.DriverException, VisitException {
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ScalableUnionVisitor visitor = |
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new ScalableUnionVisitor(); |
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Strategy strategy = |
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StrategyManager.getStrategy(overlayLayer); |
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if(onlyClipLayerSelection){
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strategy.process(visitor, |
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overlayLayer.getRecordset().getSelection()); |
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}else{
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strategy.process(visitor); |
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/** |
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* Computes union of all geometries of the clipping layer |
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* |
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* @param cancel |
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* monitors cancellations and progress of clipping polygon |
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* computation. |
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* @return |
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* @throws com.iver.cit.gvsig.fmap.DriverException |
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* @throws VisitException |
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*/ |
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private Geometry computeJtsClippingPoly(CancellableMonitorable cancel) |
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throws com.iver.cit.gvsig.fmap.DriverException, VisitException {
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ScalableUnionVisitor visitor = new ScalableUnionVisitor(); |
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Strategy strategy = StrategyManager.getStrategy(overlayLayer); |
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if (onlyClipLayerSelection) {
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strategy.process(visitor, overlayLayer.getRecordset() |
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.getSelection(), cancel); |
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} else {
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strategy.process(visitor, cancel); |
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} |
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return visitor.getJtsConvexHull();
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return visitor.getJtsConvexHull(); |
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} |
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public FBitSet getOverlays(IGeometry firstLayerGeometry, int index) {
|
| ... | ... | |
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return null; |
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} |
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public IFeature[] computeIntersection(IGeometry firsLayerGeometry, int firstLayerFeatureIndex, IGeometry secondLayerGeometry, int secondLayerFeatureIndex) {
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public IFeature[] computeIntersection(IGeometry firsLayerGeometry, |
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int firstLayerFeatureIndex, IGeometry secondLayerGeometry, |
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int secondLayerFeatureIndex) {
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// TODO Auto-generated method stub |
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return null; |
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} |
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public IMonitorableTask createTask() {
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final CancellableMonitorable cancelMonitor = |
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createCancelMonitor(); |
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return new IMonitorableTask() {
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String CLIP_MESSAGE = "Computing clip polygon: "; |
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String INTERS_MESSAGE = "Clipping geometries: "; |
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String currentMsg = CLIP_MESSAGE; |
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private boolean finished = false; |
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public int getInitialStep() {
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return cancelMonitor.getInitialStep(); |
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} |
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public int getFinishStep() {
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return cancelMonitor.getFinalStep(); |
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} |
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public int getCurrentStep() {
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return cancelMonitor.getCurrentStep(); |
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} |
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public String getStatusMessage() {
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// FIXME Cambiar esto por un mecanismo de eventos, |
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// de forma que la tarea lo que tenga sea un escuchador |
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// que cambie el mensaje de estado segun los eventos |
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// de tareas que se est?n realizando |
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return "Clip Geoprocess..."; |
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} |
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public String getNote() {
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// FIXME Cambiar esto por un mecanismo de eventos, |
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// de forma que la tarea lo que tenga sea un escuchador |
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// que cambie el mensaje de estado segun los eventos |
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// de tareas que se est?n realizando |
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return currentMsg + |
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getCurrentStep()+ |
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" de "+ |
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getFinishStep(); |
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} |
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public void cancel() {
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((DefaultCancellableMonitorable) cancelMonitor) |
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.setCanceled(true); |
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} |
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public void run() {
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Geometry clippingGeometry = null; |
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try {
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clippingGeometry = computeJtsClippingPoly(cancelMonitor); |
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} catch (Exception e) {
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//FIXME Ver que pasa con las excepciones que |
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//que pueda lanzar un ITask |
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} |
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currentMsg = INTERS_MESSAGE; |
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visitor = new ClipVisitor(clippingGeometry, resultLayerDefinition, |
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schemaManager, writer); |
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Strategy strategy = StrategyManager.getStrategy(firstLayer); |
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try {
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if (onlyFirstLayerSelection) {
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strategy.process(visitor, firstLayer.getRecordset() |
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.getSelection(), cancelMonitor); |
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} else {
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strategy.process(visitor, cancelMonitor); |
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} |
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} catch (Exception e) {
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//FIXME Ver que pasa con las excepciones de las ITask |
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} |
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finished = true; |
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} |
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public boolean isDefined() {
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return cancelMonitor.isDeterminatedProcess(); |
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} |
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public boolean isCanceled() {
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return cancelMonitor.isCanceled(); |
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} |
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public boolean isFinished() {
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return finished; |
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} |
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}; |
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} |
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private DefaultCancellableMonitorable createCancelMonitor() {
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DefaultCancellableMonitorable monitor = new DefaultCancellableMonitorable(); |
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monitor.setInitialStep(0); |
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monitor.setDeterminatedProcess(true); |
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int clipSteps = 0; |
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if (onlyClipLayerSelection){
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FBitSet selection = overlayLayer.getRecordset().getSelection(); |
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clipSteps = selection.cardinality(); |
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}else{
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try {
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clipSteps = overlayLayer.getSource().getShapeCount(); |
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} catch (DriverIOException 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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int firstSteps = 0; |
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if (onlyFirstLayerSelection) {
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FBitSet selection = firstLayer.getRecordset().getSelection(); |
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firstSteps = selection.cardinality(); |
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} else {
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try {
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firstSteps = firstLayer.getSource() |
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.getShapeCount(); |
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} catch (DriverIOException e) {
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e.printStackTrace(); |
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} |
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} |
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int totalSteps = clipSteps + firstSteps; |
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monitor.setFinalStep(totalSteps); |
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return monitor; |
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} |
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} |
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