Revision 1082 org.gvsig.geoprocess/trunk/org.gvsig.geoprocess/org.gvsig.geoprocess.algorithm/org.gvsig.geoprocess.algorithm.lateralbuffer/src/main/java/org/gvsig/geoprocess/algorithm/lateralbuffer/LateralBufferOperation.java

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LateralBufferOperation.java
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import com.vividsolutions.jts.simplify.TopologyPreservingSimplifier;
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import es.unex.sextante.core.Sextante;


  		




  
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import java.util.logging.Level;


  		




  
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import java.util.logging.Logger;


  		




  
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import org.gvsig.fmap.geom.GeometryLocator;


  		




  
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import org.gvsig.fmap.geom.GeometryManager;


  		




  
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import org.gvsig.fmap.geom.Geometry.TYPES;


  		




  
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import org.gvsig.fmap.geom.operation.GeometryOperationException;


  		




  
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import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException;


  		




  
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import org.gvsig.fmap.geom.primitive.Line;


  		




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/**


  		




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 * Lateral buffer operation


  		




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public class LateralBufferOperation extends BufferOperation {


  		




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    private BufferParameters    bufParams = null;


  		




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    private int                 lateral   = LateralBufferAlgorithm.LEFT;


  		




  
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    private boolean             ignoreInvalidLines = false;


  		




  
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    private final GeometryManager geomManager = GeometryLocator.getGeometryManager();


  		




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    /**


  		




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     * Builds an instance of this operation.


  		




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     * 


  		




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    		FeatureStore inputStore, 


  		




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    		AbstractSextanteGeoProcess p, 


  		




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    		byte tableFieldStructure,


  		




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    		int lateral) {


  		




  
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    		int lateral, 


  		




  
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                boolean ignoreInvalidLines) {


  		




  
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        super(distance, inputStore, p, tableFieldStructure);


  		




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        this.lateral = lateral;


  		




  
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        this.ignoreInvalidLines = ignoreInvalidLines;


  		




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        bufParams = new BufferParameters();


  		




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        bufParams.setSingleSided(true);


  		




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        bufParams.setEndCapStyle(capBuffer == CAP_ROUND


  		




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        if(originalGeometry == null)


  		




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        	return null;


  		




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        if(ignoreInvalidLines) {


  		




  
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            if (geomManager.isSubtype(TYPES.LINE,g.getGeometryType().getType())) {


  		




  
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                try {


  		




  
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                    Line newg = null;


  		




  
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                    newg = (Line) g;


  		




  
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                    if ((newg.getVertex(0)==newg.getVertex(newg.getNumVertices()-1) && newg.getNumVertices()==2) || (newg.perimeter()<1)) {


  		




  
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                        return null;


  		




  
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                    }


  		




  
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                } catch (GeometryOperationNotSupportedException e) {


  		




  
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                    Sextante.addErrorToLog(e);


  		




  
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                    return null;


  		




  
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                } catch (GeometryOperationException e) {


  		




  
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                    Sextante.addErrorToLog(e);


  		




  
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                    return null;


  		




  
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                }


  		




  
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            }


  		




  
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        }


  		




  
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        if (originalGeometry.getDimension() != 0)


  		




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        	simplifiedGeometry =


  		




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                TopologyPreservingSimplifier.simplify(originalGeometry,


  		












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