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/*
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 * Created on 09-ene-2007
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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: IDwgExtrusionable.java 10539 2007-02-28 07:35:10Z jmvivo $
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* $Log$
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* Revision 1.3.2.1  2007-02-28 07:35:10  jmvivo
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* Actualizado desde el HEAD.
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*
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* Revision 1.3  2007/02/15 20:35:13  azabala
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* comments
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*
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* Revision 1.2  2007/02/15 15:32:51  azabala
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* added comments
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*
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* Revision 1.1  2007/01/12 19:29:58  azabala
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* first version in cvs
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*
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*
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*/
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package com.iver.cit.jdwglib.dwg;
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/**
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 * All dwg drawing entities that need to compute
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 * an extrussion before draw them must implement
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 * this interface.
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 *
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 * This "extrusion" transforms coordinates from the
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 * "Object Coordinate System" (OCS) to the
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 * "World Coordinate System" (WCS).
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 *
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 *  For some entities, the OCS is equivalent to the
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 *  WCS and all points are expressed in World coordinates.
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                Entities                                                 Notes
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                3D entities such as                         These entities do not lie in a
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                line, point, 3dface,                        particular plane. All points are
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                3D polyline,                                        expressed in world coordinates.
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                3D vertex, 3D mesh,                         Of these entities, only lines and points can be extruded.
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                3D mesh vertex
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                2D entities such as circle, arc,                 These entities are planar in nature.
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                solid, trace, text, attrib, attdef,         All points are expressed in object coordinates.
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                shape, insert, 2D polyline, 2D vertex,         All of these entities can be extruded.
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                lwpolyline, hatch, image
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 *
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 *
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 * */
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public interface IDwgExtrusionable {
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        public void applyExtrussion();
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}
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