Application: gvSIG desktop » gvSIG tools: ToolBox

package es.unex.sextante.gridCalculus.generateRandomUniform;

import es.unex.sextante.additionalInfo.AdditionalInfoNumericalValue;

import es.unex.sextante.core.GeoAlgorithm;

import es.unex.sextante.core.Sextante;

import es.unex.sextante.dataObjects.IRasterLayer;

import es.unex.sextante.exceptions.GeoAlgorithmExecutionException;

import es.unex.sextante.exceptions.RepeatedParameterNameException;

public class GenerateRandomUniformAlgorithm

         extends

            GeoAlgorithm {

   public static final String PROB = "PROB";

   public static final String MAX  = "MAX";

   public static final String MIN  = "MIN";

   private IRasterLayer       m_Result;

   @Override

   public boolean processAlgorithm() throws GeoAlgorithmExecutionException {

      int x, y;

      int iNX, iNY;

      double dValue;

      final double dMin = m_Parameters.getParameterValueAsDouble(MIN);

      final double dMax = m_Parameters.getParameterValueAsDouble(MAX);

      m_Result = getNewRasterLayer(PROB, Sextante.getText("New_layer"), IRasterLayer.RASTER_DATA_TYPE_FLOAT);

      iNX = m_Result.getWindowGridExtent().getNX();

      iNY = m_Result.getWindowGridExtent().getNY();

      for (y = 0; y < iNY; y++) {

         for (x = 0; x < iNX; x++) {

            dValue = Math.random() * (dMax - dMin) + dMin;

            m_Result.setCellValue(x, y, dValue);

         }

      }

      return !m_Task.isCanceled();

   }

   @Override

   public void defineCharacteristics() {

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

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

      setUserCanDefineAnalysisExtent(true);

      try {

         m_Parameters.addNumericalValue(MIN, Sextante.getText("Min_value"), 0,

                  AdditionalInfoNumericalValue.NUMERICAL_VALUE_DOUBLE);

         m_Parameters.addNumericalValue(MAX, Sextante.getText("Max_value"), 1,

                  AdditionalInfoNumericalValue.NUMERICAL_VALUE_DOUBLE);

         addOutputRasterLayer(PROB, Sextante.getText("Probability"));

      }

      catch (final RepeatedParameterNameException e) {

         Sextante.addErrorToLog(e);

      }

   }

}