SnapOverlayOp.h
/**********************************************************************
*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* Copyright (C) 2009 Sandro Santilli <strk@kbt.io>
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
***********************************************************************
*
* Last port: operation/overlay/snap/SnapOverlayOp.java r320 (JTS-1.12)
*
**********************************************************************/
#pragma once
#include <geos/precision/CommonBitsRemover.h> // for dtor visibility by unique_ptr
#include <geos/operation/overlayng/OverlayNG.h>
#include <memory> // for unique_ptr
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
// Forward declarations
namespace geos {
namespace geom {
class Geometry;
struct GeomPtrPair;
}
}
namespace geos {
namespace operation { // geos::operation
namespace overlay { // geos::operation::overlay
namespace snap { // geos::operation::overlay::snap
class GEOS_DLL SnapOverlayOp {
public:
static std::unique_ptr<geom::Geometry>
overlayOp(const geom::Geometry& g0, const geom::Geometry& g1, int opCode)
{
SnapOverlayOp op(g0, g1);
return op.getResultGeometry(opCode);
}
static std::unique_ptr<geom::Geometry>
intersection(const geom::Geometry& g0, const geom::Geometry& g1)
{
return overlayOp(g0, g1, overlayng::OverlayNG::INTERSECTION);
}
static std::unique_ptr<geom::Geometry>
Union(const geom::Geometry& g0, const geom::Geometry& g1)
{
return overlayOp(g0, g1, overlayng::OverlayNG::UNION);
}
static std::unique_ptr<geom::Geometry>
difference(const geom::Geometry& g0, const geom::Geometry& g1)
{
return overlayOp(g0, g1, overlayng::OverlayNG::DIFFERENCE);
}
static std::unique_ptr<geom::Geometry>
symDifference(const geom::Geometry& g0, const geom::Geometry& g1)
{
return overlayOp(g0, g1, overlayng::OverlayNG::SYMDIFFERENCE);
}
SnapOverlayOp(const geom::Geometry& g1, const geom::Geometry& g2)
:
geom0(g1),
geom1(g2)
{
computeSnapTolerance();
}
std::unique_ptr<geom::Geometry> getResultGeometry(int opCode);
private:
void computeSnapTolerance();
void snap(geom::GeomPtrPair& ret);
void removeCommonBits(const geom::Geometry& geom0,
const geom::Geometry& geom1,
geom::GeomPtrPair& ret);
// re-adds common bits to the given geom
void prepareResult(geom::Geometry& geom);
const geom::Geometry& geom0;
const geom::Geometry& geom1;
double snapTolerance;
std::unique_ptr<precision::CommonBitsRemover> cbr;
// Declare type as noncopyable
SnapOverlayOp(const SnapOverlayOp& other) = delete;
SnapOverlayOp& operator=(const SnapOverlayOp& rhs) = delete;
};
} // namespace geos::operation::overlay::snap
} // namespace geos::operation::overlay
} // namespace geos::operation
} // namespace geos
#ifdef _MSC_VER
#pragma warning(pop)
#endif
geos::geom::Geometry
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition Geometry.h:196
geos::geom
Definition Angle.h:26
geos::operation::overlay
Contains classes that perform a topological overlay to compute boolean spatial functions.
Definition namespaces.h:229
geos::operation
Provides classes for implementing operations on geometries.
Definition CleanCoverage.h:34
geos
Basic namespace for all GEOS functionalities.
Definition geos.h:38