src/geom/prep/PreparedGeometryFactory.cpp

   1 /**********************************************************************
   2  *
   3  * GEOS - Geometry Engine Open Source
   4  * http://geos.osgeo.org
   5  *
   6  * Copyright (C) 2001-2002 Vivid Solutions Inc.
   7  *
   8  * This is free software; you can redistribute and/or modify it under
   9  * the terms of the GNU Lesser General Public Licence as published
  10  * by the Free Software Foundation.
  11  * See the COPYING file for more information.
  12  *
  13  **********************************************************************
  14  *
  15  * Last port: geom/prep/PreparedGeometryFactory.java rev. 1.4 (JTS-1.10)
  16  *
  17  **********************************************************************/
  18
  19
  20 #include <geos/geom/Point.h>
  21 #include <geos/geom/MultiPoint.h>
  22 #include <geos/geom/LineString.h>
  23 #include <geos/geom/LinearRing.h>
  24 #include <geos/geom/MultiLineString.h>
  25 #include <geos/geom/Polygon.h>
  26 #include <geos/geom/MultiPolygon.h>
  27 #include <geos/geom/prep/PreparedGeometryFactory.h>
  28 #include <geos/geom/prep/PreparedGeometry.h>
  29 #include <geos/geom/prep/BasicPreparedGeometry.h>
  30 #include <geos/geom/prep/PreparedPolygon.h>
  31 #include <geos/geom/prep/PreparedLineString.h>
  32 #include <geos/geom/prep/PreparedPoint.h>
  33 #include <geos/util/IllegalArgumentException.h>
  34
  35 namespace geos {
  36 namespace geom { // geos.geom
  37 namespace prep { // geos.geom.prep
  38
  39 const PreparedGeometry *
  40 PreparedGeometryFactory::create( const geom::Geometry * g) const
  41 {
  42     using geos::geom::GeometryTypeId;
  43
  44     if (0 == g)
  45     {
  46         throw util::IllegalArgumentException("PreparedGeometry constructd with null Geometry object");
  47     }
  48
  49         PreparedGeometry* pg = 0;
  50
  51         switch ( g->getGeometryTypeId() )
  52         {
  53                 case GEOS_MULTIPOINT:
  54                 case GEOS_POINT:
  55                         pg = new PreparedPoint( g);
  56                         break;
  57
  58                 case GEOS_LINEARRING:
  59                 case GEOS_LINESTRING:
  60                 case GEOS_MULTILINESTRING:
  61                         pg = new PreparedLineString( g);
  62                         break;
  63
  64                 case GEOS_POLYGON:
  65                 case GEOS_MULTIPOLYGON:
  66                         pg = new PreparedPolygon( g);
  67                         break;
  68
  69                 default:
  70                         pg = new BasicPreparedGeometry( g);
  71         }
  72         return pg;
  73 }
  74
  75 } // namespace geos.geom.prep
  76 } // namespace geos.geom
  77 } // namespace geos
  78
  79 /**********************************************************************
  80  * $Log$
  81  *
  82  **********************************************************************/