Revision 44 org.gvsig.sextante/trunk/org.gvsig.sextante.app/org.gvsig.sextante.app.algorithm/org.gvsig.sextante.app.algorithm.buffer/src/main/java/org/gvsig/sextante/app/algorithm/buffer/OutBufferOperation.java

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OutBufferOperation.java
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import com.vividsolutions.jts.geom.Geometry;
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import com.vividsolutions.jts.operation.buffer.BufferOp;
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import com.vividsolutions.jts.operation.buffer.BufferParameters;
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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 es.unex.sextante.dataObjects.IVectorLayer;


  		




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 * @author <a href="mailto:nachobrodin@gmail.com">Nacho Brodin</a>


  		




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 */


  		




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public class OutBufferOperation extends BufferOperation {


  		




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	/**


  		




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	 * Builds an instance of this operation.


  		




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	 * @param distance


  		




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	public EditableFeature invoke(org.gvsig.fmap.geom.Geometry g, Feature feature) {


  		




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		Geometry newGeom = null;


  		




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		Geometry previousExteriorRing = null;


  		




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		Geometry inputParam = GeometryUtil.geomToJTS(g);


  		




  
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		Geometry originalGeometry = GeometryUtil.geomToJTS(g);


  		




  
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		Geometry inputParam = originalGeometry;


  		




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		distance.setFeature(feature);


  		




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		double bufferDistance = distance.getBufferDistance(userDistance, projection, MapTools.getDistanceUnits(), MapTools.getMapUnits());


  		




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		if(originalGeometry.getDimension() != 0)


  		




  
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			inputParam = TopologyPreservingSimplifier.simplify(originalGeometry, bufferDistance / 10d);


  		




  
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		for(int i = 1; i <= numberOfRadialBuffers; i++) {


  		




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			double distRing = i * bufferDistance;


  		




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			BufferOp bufOp = new BufferOp(inputParam);


  		




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				newGeom = newGeometry;


  		




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			try {


  		




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				lastEditFeature = persister.addFeature(feature, newGeom);


  		




  
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				if(newGeom != null) {


  		




  
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					lastEditFeature = persister.addFeature(newGeom, id, distRing);


  		




  
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					id ++;


  		




  
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					previousExteriorRing = newGeom;


  		




  
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				}


  		




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			} catch (CreateGeometryException e) {


  		




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				Sextante.addErrorToLog(e);


  		




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			} catch (DataException e) {


  		












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