Application: gvSIG desktop » gvSIG tools: ToolBox

package es.unex.sextante.vectorTools.geometriesToPoints;

import com.vividsolutions.jts.geom.Coordinate;

import com.vividsolutions.jts.geom.Geometry;

import com.vividsolutions.jts.geom.GeometryFactory;

import es.unex.sextante.additionalInfo.AdditionalInfoVectorLayer;

import es.unex.sextante.core.GeoAlgorithm;

import es.unex.sextante.core.Sextante;

import es.unex.sextante.dataObjects.IFeature;

import es.unex.sextante.dataObjects.IFeatureIterator;

import es.unex.sextante.dataObjects.IVectorLayer;

import es.unex.sextante.dataObjects.vectorFilters.BoundingBoxFilter;

import es.unex.sextante.exceptions.GeoAlgorithmExecutionException;

import es.unex.sextante.exceptions.RepeatedParameterNameException;

import es.unex.sextante.outputs.OutputVectorLayer;

public class GeometriesToPointsAlgorithm

         extends

            GeoAlgorithm {

   public static final String POINTS = "POINTS";

   public static final String INPUT  = "INPUT";

   private IVectorLayer       m_Output;

   @Override

   public void defineCharacteristics() {

      setName(Sextante.getText("Geometries_to_points"));

      setGroup(Sextante.getText("Tools_for_vector_layers"));

      setUserCanDefineAnalysisExtent(true);

      try {

         m_Parameters.addInputVectorLayer(INPUT, Sextante.getText("Input_layer"), AdditionalInfoVectorLayer.SHAPE_TYPE_ANY, true);

         addOutputVectorLayer(POINTS, Sextante.getText("Points"), OutputVectorLayer.SHAPE_TYPE_POINT);

      }

      catch (final RepeatedParameterNameException e) {

         Sextante.addErrorToLog(e);

      }

   }

   @Override

   public boolean processAlgorithm() throws GeoAlgorithmExecutionException {

      final IVectorLayer input = m_Parameters.getParameterValueAsVectorLayer(INPUT);

      if (!m_bIsAutoExtent) {

         input.addFilter(new BoundingBoxFilter(m_AnalysisExtent));

      }

      m_Output = getNewVectorLayer(POINTS, input.getName() + "[" + Sextante.getText("Points") + "]",

               IVectorLayer.SHAPE_TYPE_POINT, input.getFieldTypes(), input.getFieldNames());

      int i = 0;

      final int iShapeCount = input.getShapesCount();

      final IFeatureIterator iter = input.iterator();

      final GeometryFactory gf = new GeometryFactory();

      while (iter.hasNext() && setProgress(i, iShapeCount)) {

         final IFeature feature = iter.next();

         final Geometry geom = feature.getGeometry();

         final Coordinate[] coords = geom.getCoordinates();

         for (final Coordinate element : coords) {

            m_Output.addFeature(gf.createPoint(element), feature.getRecord().getValues());

         }

         i++;

      }

      iter.close();

      return !m_Task.isCanceled();

   }

}