svn-gvsig-desktop / tags / v1_1_Build_1010 / extensions / extGeoProcessing / src / com / iver / cit / gvsig / geoprocess / impl / convexhull / fmap / ScalableUnionVisitor.java @ 12804
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/*
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* Created on 03-mar-2006
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*
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* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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/* CVS MESSAGES:
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*
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* $Id: ScalableUnionVisitor.java 12804 2007-07-26 12:18:11Z $
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* $Log$
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* Revision 1.1.2.1 2007-07-12 09:28:17 azabala
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* Modifications to work with closed polylines as polygons (usual in cad files)
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*
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* Revision 1.1 2006/06/20 18:20:45 azabala
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* first version in cvs
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*
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* Revision 1.3 2006/06/08 18:20:59 azabala
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* modificaciones para admitir capas de shapeType MULTI
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*
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* Revision 1.2 2006/06/02 18:21:28 azabala
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* *** empty log message ***
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*
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* Revision 1.1 2006/05/24 21:13:31 azabala
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* primera version en cvs despues de refactoring orientado a crear un framework extensible de geoprocessing
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*
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* Revision 1.2 2006/05/01 19:16:10 azabala
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* optimizada la union mediante buffer(0)
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*
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* Revision 1.1 2006/03/06 19:48:39 azabala
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* *** empty log message ***
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*
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* Revision 1.1 2006/03/05 19:57:48 azabala
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* *** empty log message ***
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*
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*
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*/
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package com.iver.cit.gvsig.geoprocess.impl.convexhull.fmap; |
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import com.iver.cit.gvsig.fmap.core.FShape; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.operations.strategies.VisitException; |
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import com.iver.cit.gvsig.geoprocess.core.fmap.XTypes; |
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import com.vividsolutions.jts.geom.Geometry; |
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import com.vividsolutions.jts.geom.GeometryCollection; |
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import com.vividsolutions.jts.geom.MultiLineString; |
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//TODO Este Visitor no deber?a heredar del anterior, puesto que las
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//llamadas getJtsConvexHull() no devuelven un convex hull, sino una
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//uni?n.
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public class ScalableUnionVisitor extends ScalableConvexHullVisitor { |
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public void visit(IGeometry g, int index) throws VisitException { |
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if(g == null) |
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return;
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Geometry actualGeometry = null;
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int geometryType = g.getGeometryType();
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switch(geometryType){
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case XTypes.POLYGON:
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case FShape.CIRCLE:
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case FShape.ELLIPSE:
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case FShape.POLYGON + FShape.Z:
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case FShape.MULTI://Este igual hay que quitarlo, pero no suele |
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//ser devuelto por los drivers
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actualGeometry = g.toJTSGeometry(); |
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break;
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case XTypes.LINE:
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case XTypes.ARC:
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case XTypes.LINE + XTypes.Z:
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actualGeometry = g.toJTSGeometry(); |
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MultiLineString lineString = (MultiLineString) actualGeometry; |
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if(!lineString.isClosed())
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return;
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/*
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* TODO
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* must be faster build a multipolygon from the multilinestring
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* (one polygon from each linestring
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* */
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actualGeometry = lineString.buffer(0d);
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break;
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default:
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return;
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} |
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if(geometry == null){ |
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geometry = actualGeometry; |
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}else{
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Geometry[] geoms = new Geometry[2]; |
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geoms[0] = geometry;
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geoms[1] = actualGeometry;
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GeometryCollection gc = geomFact. |
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createGeometryCollection(geoms); |
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geometry = gc.buffer(0d);
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} |
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} |
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} |
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