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# SnapIfNeededOverlayOp.h

    00001 /**********************************************************************
    00002  * $Id: SnapIfNeededOverlayOp.h 3224 2011-02-21 12:03:25Z strk $
    00003  *
    00004  * GEOS - Geometry Engine Open Source
    00005  * http://geos.refractions.net
    00006  *
    00007  * Copyright (C) 2009 2011  Sandro Santilli <strk@keybit.net>
    00008  *
    00009  * This is free software; you can redistribute and/or modify it under
    00010  * the terms of the GNU Lesser General Public Licence as published
    00011  * by the Free Software Foundation.
    00012  * See the COPYING file for more information.
    00013  *
    00014  ***********************************************************************
    00015  *
    00016  * Last port: operation/overlay/snap/SnapIfNeededOverlayOp.java r320 (JTS-1.12)
    00017  *
    00018  **********************************************************************/
    00019
    00020 #ifndef GEOS_OP_OVERLAY_SNAP_SNAPIFNEEDEDOVERLAYOP_H
    00021 #define GEOS_OP_OVERLAY_SNAP_SNAPIFNEEDEDOVERLAYOP_H
    00022
    00023 #include <geos/operation/overlay/OverlayOp.h> // for enums
    00024
    00025 #include <memory> // for auto_ptr
    00026
    00027 // Forward declarations
    00028 namespace geos {
    00029         namespace geom {
    00030                 class Geometry;
    00031         }
    00032 }
    00033
    00034 namespace geos {
    00035 namespace operation { // geos::operation
    00036 namespace overlay { // geos::operation::overlay
    00037 namespace snap { // geos::operation::overlay::snap
    00038
    00050 class SnapIfNeededOverlayOp
    00051 {
    00052
    00053 public:
    00054
    00055         static std::auto_ptr<geom::Geometry>
    00056         overlayOp(const geom::Geometry& g0, const geom::Geometry& g1,
    00057                   OverlayOp::OpCode opCode)
    00058         {
    00059                 SnapIfNeededOverlayOp op(g0, g1);
    00060                 return op.getResultGeometry(opCode);
    00061         }
    00062
    00063         static std::auto_ptr<geom::Geometry>
    00064         intersection(const geom::Geometry& g0, const geom::Geometry& g1)
    00065         {
    00066                 return overlayOp(g0, g1, OverlayOp::opINTERSECTION);
    00067         }
    00068
    00069         static std::auto_ptr<geom::Geometry>
    00070         Union(const geom::Geometry& g0, const geom::Geometry& g1)
    00071         {
    00072                 return overlayOp(g0, g1, OverlayOp::opUNION);
    00073         }
    00074
    00075         static std::auto_ptr<geom::Geometry>
    00076         difference(const geom::Geometry& g0, const geom::Geometry& g1)
    00077         {
    00078                 return overlayOp(g0, g1, OverlayOp::opDIFFERENCE);
    00079         }
    00080
    00081         static std::auto_ptr<geom::Geometry>
    00082         symDifference(const geom::Geometry& g0, const geom::Geometry& g1)
    00083         {
    00084                 return overlayOp(g0, g1, OverlayOp::opSYMDIFFERENCE);
    00085         }
    00086
    00087         SnapIfNeededOverlayOp(const geom::Geometry& g1, const geom::Geometry& g2)
    00088                 :
    00089                 geom0(g1),
    00090                 geom1(g2)
    00091         {
    00092         }
    00093
    00094
    00095         typedef std::auto_ptr<geom::Geometry> GeomPtr;
    00096
    00097         GeomPtr getResultGeometry(OverlayOp::OpCode opCode);
    00098
    00099 private:
    00100
    00101         const geom::Geometry& geom0;
    00102         const geom::Geometry& geom1;
    00103
    00104     // Declare type as noncopyable
    00105     SnapIfNeededOverlayOp(const SnapIfNeededOverlayOp& other);
    00106     SnapIfNeededOverlayOp& operator=(const SnapIfNeededOverlayOp& rhs);
    00107 };
    00108
    00109
    00110 } // namespace geos::operation::overlay::snap
    00111 } // namespace geos::operation::overlay
    00112 } // namespace geos::operation
    00113 } // namespace geos
    00114
    00115 #endif // ndef GEOS_OP_OVERLAY_SNAP_SNAPIFNEEDEDOVERLAYOP_H
    00116
    00117 /**********************************************************************
    00118  * $Log$
    00119  **********************************************************************/
    00120