Application: gvSIG desktop » gvSIG tools: ToolBox

package es.unex.sextante.vectorTools.pointCoordinates;

import com.vividsolutions.jts.geom.Coordinate;

import com.vividsolutions.jts.geom.Geometry;

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.IOutputChannel;

import es.unex.sextante.outputs.OutputVectorLayer;

import es.unex.sextante.shapesTools.ShapesTools;

public class pointCoordinatesAlgorithm

         extends

            GeoAlgorithm {

   public static final String LAYER       = "LAYER";

   public static final String GRIDS       = "GRIDS";

   public static final String INTERPOLATE = "INTERPOLATE";

   public static final String RESULT      = "RESULT";

   private IVectorLayer       m_Layer;

   @Override

   public void defineCharacteristics() {

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

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

      setUserCanDefineAnalysisExtent(true);

      try {

         m_Parameters.addInputVectorLayer(LAYER, Sextante.getText("Points_layer"), AdditionalInfoVectorLayer.SHAPE_TYPE_POINT,

                  true);

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

      }

      catch (final RepeatedParameterNameException e) {

         Sextante.addErrorToLog(e);

      }

   }

   @Override

   public boolean processAlgorithm() throws GeoAlgorithmExecutionException {

      int iProgress = 0;

      int iShapeCount;

      Double[][] values;

      m_Layer = m_Parameters.getParameterValueAsVectorLayer(LAYER);

      if (!m_bIsAutoExtent) {

         m_Layer.addFilter(new BoundingBoxFilter(m_AnalysisExtent));

      }

      iShapeCount = m_Layer.getShapesCount();

      values = new Double[2][iShapeCount];

      final IFeatureIterator iter = m_Layer.iterator();

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

         final IFeature feature = iter.next();

         final Geometry geom = feature.getGeometry();

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

         values[0][iProgress] = new Double(coords[0].x);

         values[1][iProgress] = new Double(coords[0].y);

         iProgress++;

      }

      if (m_Task.isCanceled()) {

         return false;

      }

      final String[] sNames = { "X", "Y" };

      final Class[] types = { Double.class, Double.class };

      final IOutputChannel channel = getOutputChannel(RESULT);

      final OutputVectorLayer out = new OutputVectorLayer();

      out.setName(RESULT);

      out.setOutputChannel(channel);

      out.setDescription(m_Layer.getName());

      out.setOutputObject(ShapesTools.addFields(m_OutputFactory, m_Layer, channel, sNames, values, types));

      addOutputObject(out);

      return !m_Task.isCanceled();

   }

}