gm_object.java

用于GIS(全球地理系统)的分析和处理的代码。

/*
 * This file is part of the GeOxygene project source files. 
 * 
 * GeOxygene aims at providing an open framework which implements OGC/ISO specifications for 
 * the development and deployment of geographic (GIS) applications. It is a open source 
 * contribution of the COGIT laboratory at the Institut G閛graphique National (the French 
 * National Mapping Agency).
 * 
 * See: http://oxygene-project.sourceforge.net 
 *  
 * Copyright (C) 2005 Institut G閛graphique National
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation; 
 * either version 2.1 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY 
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 
 * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with 
 * this library (see file LICENSE if present); if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *  
 */

package fr.ign.cogit.geoxygene.spatial.geomroot;


import java.awt.Color;

import fr.ign.cogit.geoxygene.datatools.Geodatabase;
//import fr.ign.cogit.geoxygene.datatools.oracle.OracleAlgorithms;
import fr.ign.cogit.geoxygene.spatial.coordgeom.DirectPosition;
import fr.ign.cogit.geoxygene.spatial.coordgeom.DirectPositionList;
import fr.ign.cogit.geoxygene.spatial.coordgeom.GM_Envelope;
import fr.ign.cogit.geoxygene.spatial.coordgeom.GM_Polygon;
import fr.ign.cogit.geoxygene.util.algo.JtsAlgorithms;
import fr.ign.cogit.geoxygene.util.conversion.ImgUtil;
import fr.ign.cogit.geoxygene.util.conversion.WktGeOxygene;


/**
  * Classe m鑢e abstraite pour la g閛m閠rie, selon la norme OGC Topic 1 / ISO 19107. 
  * Cette classe d閒init les op閞ations communes aux diff閞ents objets g閛m閠riques qui en h閞itent. 
  * Toutes les op閞ations doivent se faire dans le m阭e syst鑝e de coordonn閑s. 
  * Un objet g閛m閠rique est en fait une combinaison d'un syst鑝e de r閒閞ence de coordonn閑s (CRS), 
  * et d'une g閛m閠rie munie de coordonn閑s (CoordGeom).
  * 
  * <BR> Les methodes geometriques font par defaut appel a la bibliotheque JTS (jts.jar, version 1.4),
  * via des appels aux methodes de la classe util.algo.JtsAlgorithms. Attention, bien souvent, ces m閠hodes 
  * ne fonctionnent que sur des primitives ou des agr間ats homog鑞es (GM_MultiTruc).
  * http://www.vividsolutions.com/jts/jtshome.htm
  * 
  * <BR> Historiquememt, les methodes faisaient appel aux fonctions geometriques d'Oracle 
  * et a la bibliotheque fournie par Oracle sdoapi.zip, 
  * via des appels aux methodes de la classe util.algo.OracleAlgorithms,
  * qui elles-memes appellent des methodes datatools.oracle.SpatialQuery.
  * Ces methodes ont ete gardees et portent le suffixe "Oracle".
  * Pour les appeler, il est n閏essaire d'閠ablir une connection