svn-gvsig-desktop / trunk / extensions / extGPE-gvSIG / src / org / gvsig / fmap / drivers / gpe / writer / ExportGeometry.java @ 29825
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package org.gvsig.fmap.drivers.gpe.writer; |
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import java.awt.geom.PathIterator; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IProjection; |
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import org.gvsig.gpe.writer.GPEWriterHandler; |
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import org.gvsig.remoteClient.gml.schemas.XMLElement; |
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import com.iver.cit.gvsig.fmap.core.FMultiPoint2D; |
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import com.iver.cit.gvsig.fmap.core.FPoint2D; |
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import com.iver.cit.gvsig.fmap.core.FPolygon2D; |
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import com.iver.cit.gvsig.fmap.core.FPolyline2D; |
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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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/* 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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* $Id$
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* $Log$
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*
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*/
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/**
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* @author Jorge Piera LLodr? (jorge.piera@iver.es)
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*/
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public class ExportGeometry { |
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private GPEWriterHandler writer = null; |
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//To know if the geometry is multiple
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private boolean isMultiple = false; |
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//To reproject geometries
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private IProjection projOrig = null; |
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private IProjection projDest = null; |
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private ICoordTrans coordTrans = null; |
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private String crs = null; |
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public ExportGeometry(GPEWriterHandler writer) {
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super();
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this.writer = writer;
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} |
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/**
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* It writes a geometry
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* @param geom
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* The geometry to write
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* @param crs
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* The coordinates reference system
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*/
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public void writeGeometry(IGeometry geom){ |
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crs = null;
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if (projDest != null){ |
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crs = projDest.getAbrev(); |
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} |
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if (geom instanceof FMultiPoint2D){ |
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FMultiPoint2D multi = (FMultiPoint2D)geom; |
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for (int i=0 ; i<multi.getNumPoints() ; i++){ |
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reproject(multi.getPoint(i)); |
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} |
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writeMultiPoint(multi, crs); |
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return;
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} |
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FShape shp = (FShape)geom.getInternalShape(); |
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reproject(shp); |
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int type = shp.getShapeType() % FShape.Z % FShape.M;
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if (type == FShape.POINT){
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writePoint((FPoint2D)shp, crs); |
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}else if (type==FShape.LINE){ |
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writeLine((FPolyline2D)shp, crs); |
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}else if (type==FShape.POLYGON){ |
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writePolygon((FPolygon2D)shp, crs); |
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} |
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} |
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/**
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* Reproject a geometry
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* @param shp
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*/
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private void reproject(FShape shp){ |
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ICoordTrans coordTrans = getCoordTrans(); |
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if (coordTrans != null){ |
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try{
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shp.reProject(coordTrans); |
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}catch(Exception e){ |
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//The server is the responsible to reproject
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if (projOrig != null){ |
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crs = projOrig.getAbrev(); |
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} |
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} |
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} |
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} |
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/**
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* Writes a point in 2D
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* @param point
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* The point to write
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* @param crs
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* The coordinates reference system
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*/
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private void writePoint(FPoint2D point, String crs){ |
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writer.startPoint(null, new CoordinatesSequencePoint(point), crs); |
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writer.endPoint(); |
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} |
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/**
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* Writes a multipoint in 2D
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* @param point
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* The point to write
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* @param crs
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* The coordinates reference system
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*/
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private void writeMultiPoint(FMultiPoint2D multi, String crs){ |
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writer.startMultiPoint(null, crs);
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for (int i=0 ; i<multi.getNumPoints() ; i++){ |
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FPoint2D point = multi.getPoint(i); |
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writePoint(point, crs); |
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} |
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writer.endMultiPoint(); |
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} |
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/**
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* Writes a line in 2D
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* @param line
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* The line to write
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* @param crs
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* The coordinates reference system
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* @param geometries
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* The parsed geometries
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*/
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private void writeLine(FPolyline2D line, String crs){ |
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boolean isMultipleGeometry = false; |
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if (isMultiple){
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writer.startMultiLineString(null, crs);
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}else{
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isMultipleGeometry = isMultiple(line.getPathIterator(null));
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if (isMultipleGeometry){
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writer.startMultiLineString(null, crs);
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} |
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} |
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CoordinatesSequenceGeneralPath sequence = new CoordinatesSequenceGeneralPath(line.getPathIterator(null)); |
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writer.startLineString(null, sequence, crs);
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writer.endLineString(); |
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if (isMultiple || isMultipleGeometry){
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while (sequence.hasMoreGeometries()){
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sequence.initialize(); |
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writer.startLineString(null, sequence, crs);
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writer.endLineString(); |
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} |
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writer.endMultiLineString(); |
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} |
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} |
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/**
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* Writes a polygon in 2D
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* @param polygon
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* The polygon to write
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* @param crs
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* The coordinates reference system
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* @param geometries
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* The parsed geometries
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*/
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private void writePolygon(FPolygon2D polygon, String crs){ |
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boolean isMultipleGeometry = false; |
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if (isMultiple){
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writer.startMultiPolygon(null, crs);
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}else{
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isMultipleGeometry = isMultiple(polygon.getPathIterator(null));
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if (isMultipleGeometry){
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writer.startMultiPolygon(null, crs);
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} |
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} |
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CoordinatesSequenceGeneralPath sequence = new CoordinatesSequenceGeneralPath(polygon.getPathIterator(null)); |
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writer.startPolygon(null, sequence ,crs);
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writer.endPolygon(); |
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if (isMultiple || isMultipleGeometry){
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while (sequence.hasMoreGeometries()){
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sequence.initialize(); |
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writer.startPolygon(null, sequence ,crs);
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writer.endPolygon(); |
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} |
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writer.endMultiPolygon(); |
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} |
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} |
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/**
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* Return if the geometry is multiple
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* @param path
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* @return
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*/
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public boolean isMultiple(PathIterator path){ |
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double[] coords = new double[2]; |
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int type = 0; |
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int numGeometries = 0; |
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while (!path.isDone()){
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type = path.currentSegment(coords); |
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switch (type) {
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case PathIterator.SEG_MOVETO: |
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numGeometries++; |
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if (numGeometries == 2){ |
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return true; |
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} |
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break;
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case PathIterator.SEG_CLOSE: |
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return false; |
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default:
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break;
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} |
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path.next(); |
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} |
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return false; |
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} |
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/**
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* @param projOrig the projOrig to set
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*/
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public void setProjOrig(IProjection projOrig) { |
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this.projOrig = projOrig;
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} |
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/**
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* @param projDest the projDest to set
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*/
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public void setProjDest(IProjection projDest) { |
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this.projDest = projDest;
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} |
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/**
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* @return the coordTrans
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*/
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private ICoordTrans getCoordTrans() {
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if (coordTrans == null){ |
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if ((projOrig == null) || (projDest == null)){ |
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return null; |
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} |
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coordTrans = projOrig.getCT(projDest); |
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} |
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return coordTrans;
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} |
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/**
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* @param writer the writer to set
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*/
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public void setWriter(GPEWriterHandler writer) { |
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this.writer = writer;
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} |
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/**
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* @param geometry the geometry to set
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*/
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public void setGeometry(XMLElement geometry) { |
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if (geometry != null){ |
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if (geometry.getEntityType().getName().toLowerCase().indexOf("multi") > 0){ |
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isMultiple = true;
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}else{
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isMultiple = false;
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} |
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} |
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} |
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/**
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* @return the isMultiple
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*/
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public boolean isMultiple() { |
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return isMultiple;
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} |
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/**
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* @param isMultiple the isMultiple to set
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*/
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public void setMultiple(boolean isMultiple) { |
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this.isMultiple = isMultiple;
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} |
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/**
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* @return the projDest
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*/
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public IProjection getProjDest() {
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return projDest;
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} |
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} |