root / branches / v2_0_0_prep / libraries / libFMap_geometries / src / org / gvsig / fmap / geom / operation / distance / PointDistance.java @ 29798
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2009 {Iver T.I.} {Task}
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*/
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package org.gvsig.fmap.geom.operation.distance; |
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import java.awt.geom.Point2D; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.Geometry.TYPES; |
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import org.gvsig.fmap.geom.operation.GeometryOperation; |
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import org.gvsig.fmap.geom.operation.GeometryOperationContext; |
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import org.gvsig.fmap.geom.operation.GeometryOperationException; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.fmap.geom.type.GeometryType; |
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/**
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* @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
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*/
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public class PointDistance extends GeometryOperation{ |
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public static final String NAME = "distance"; |
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public static final int CODE = GeometryLocator.getGeometryManager(). |
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getGeometryOperationCode(NAME); |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.geom.operation.GeometryOperation#getOperationIndex()
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*/
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public int getOperationIndex() { |
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return CODE;
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.geom.operation.GeometryOperation#invoke(org.gvsig.fmap.geom.Geometry, org.gvsig.fmap.geom.operation.GeometryOperationContext)
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*/
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public Object invoke(Geometry geom, GeometryOperationContext ctx) |
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throws GeometryOperationException {
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Geometry geom2 = (Geometry)ctx.getAttribute("geom");
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GeometryType geomType2 = geom2.getGeometryType(); |
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if ((TYPES.POINT != geom.getType()) && TYPES.POINT != geomType2.getType()){
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throw new UnsupportedOperationException("The distance only can be execudet between two points"); |
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} |
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return new Double(Point2D.distance(((Point)geom).getX(), |
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((Point)geom).getY(),
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((Point)geom2).getX(),
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((Point)geom2).getX()));
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} |
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} |
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