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# SnapIfNeededOverlayOp.h

    00001 /**********************************************************************
    00002  * $Id: SnapIfNeededOverlayOp.h 2809 2009-12-06 01:05:24Z mloskot $
    00003  *
    00004  * GEOS - Geometry Engine Open Source
    00005  * http://geos.refractions.net
    00006  *
    00007  * Copyright (C) 2009  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 rev 1.1
    00017  * (JTS-1.10)
    00018  *
    00019  **********************************************************************/
    00020
    00021 #ifndef GEOS_OP_OVERLAY_SNAP_SNAPIFNEEDEDOVERLAYOP_H
    00022 #define GEOS_OP_OVERLAY_SNAP_SNAPIFNEEDEDOVERLAYOP_H
    00023
    00024 #include <geos/operation/overlay/OverlayOp.h> // for enums
    00025
    00026 #include <memory> // for auto_ptr
    00027
    00028 // Forward declarations
    00029 namespace geos {
    00030         namespace geom {
    00031                 class Geometry;
    00032         }
    00033 }
    00034
    00035 namespace geos {
    00036 namespace operation { // geos::operation
    00037 namespace overlay { // geos::operation::overlay
    00038 namespace snap { // geos::operation::overlay::snap
    00039
    00051 class SnapIfNeededOverlayOp
    00052 {
    00053
    00054 public:
    00055
    00056         static std::auto_ptr<geom::Geometry>
    00057         overlayOp(const geom::Geometry& g0, const geom::Geometry& g1,
    00058                   OverlayOp::OpCode opCode)
    00059         {
    00060                 SnapIfNeededOverlayOp op(g0, g1);
    00061                 return op.getResultGeometry(opCode);
    00062         }
    00063
    00064         static std::auto_ptr<geom::Geometry>
    00065         intersection(const geom::Geometry& g0, const geom::Geometry& g1)
    00066         {
    00067                 return overlayOp(g0, g1, OverlayOp::opINTERSECTION);
    00068         }
    00069
    00070         static std::auto_ptr<geom::Geometry>
    00071         Union(const geom::Geometry& g0, const geom::Geometry& g1)
    00072         {
    00073                 return overlayOp(g0, g1, OverlayOp::opUNION);
    00074         }
    00075
    00076         static std::auto_ptr<geom::Geometry>
    00077         difference(const geom::Geometry& g0, const geom::Geometry& g1)
    00078         {
    00079                 return overlayOp(g0, g1, OverlayOp::opDIFFERENCE);
    00080         }
    00081
    00082         static std::auto_ptr<geom::Geometry>
    00083         symDifference(const geom::Geometry& g0, const geom::Geometry& g1)
    00084         {
    00085                 return overlayOp(g0, g1, OverlayOp::opSYMDIFFERENCE);
    00086         }
    00087
    00088         SnapIfNeededOverlayOp(const geom::Geometry& g1, const geom::Geometry& g2)
    00089                 :
    00090                 geom0(g1),
    00091                 geom1(g2)
    00092         {
    00093         }
    00094
    00095
    00096         typedef std::auto_ptr<geom::Geometry> GeomPtr;
    00097
    00098         GeomPtr getResultGeometry(OverlayOp::OpCode opCode);
    00099
    00100 private:
    00101
    00102         const geom::Geometry& geom0;
    00103         const geom::Geometry& geom1;
    00104
    00105     // Declare type as noncopyable
    00106     SnapIfNeededOverlayOp(const SnapIfNeededOverlayOp& other);
    00107     SnapIfNeededOverlayOp& operator=(const SnapIfNeededOverlayOp& rhs);
    00108 };
    00109
    00110
    00111 } // namespace geos::operation::overlay::snap
    00112 } // namespace geos::operation::overlay
    00113 } // namespace geos::operation
    00114 } // namespace geos
    00115
    00116 #endif // ndef GEOS_OP_OVERLAY_SNAP_SNAPIFNEEDEDOVERLAYOP_H
    00117
    00118 /**********************************************************************
    00119  * $Log$
    00120  **********************************************************************/
    00121