76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
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/**********************************************************************
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*
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* GEOS - Geometry Engine Open Source
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* http://geos.osgeo.org
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*
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* Copyright 2011-2014 Sandro Santilli <strk@kbt.io>
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* Copyright (C) 2019 Even Rouault <even.rouault@spatialys.com>
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU Lesser General Public Licence as published
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* by the Free Software Foundation.
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* See the COPYING file for more information.
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**********************************************************************
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*
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* Ported from rtgeom_geos.c from
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* rttopo - topology library
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* http://git.osgeo.org/gitea/rttopo/librttopo
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* with relicensing from GPL to LGPL with Copyright holder permission.
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*
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**********************************************************************/
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#pragma once
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#include <geos/export.h>
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#include <memory>
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#ifdef _MSC_VER
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#pragma warning(push)
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#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
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#endif
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// Forward declarations
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namespace geos {
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namespace geom {
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class Geometry;
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}
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}
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namespace geos {
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namespace operation { // geos::operation
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namespace polygonize { // geos::operation::polygonize
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/** \brief Creates an areal geometry formed by the constituent linework of given geometry.
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*
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* The return type can be a Polygon or MultiPolygon, depending on input.
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* If the input lineworks do not form polygons NULL is returned.
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* The inputs can be LINESTRINGS, MULTILINESTRINGS, POLYGONS, MULTIPOLYGONS, and GeometryCollections.
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*
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* This algorithm will assume all inner geometries represent holes
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*
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* This is the equivalent of the PostGIS ST_BuildArea() function.
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*/
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class GEOS_DLL BuildArea {
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public:
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/** \brief
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* Create a BuildArea object.
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*/
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BuildArea() = default;
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~BuildArea() = default;
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/** \brief Return the area built from the constituent linework of the input geometry. */
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std::unique_ptr<geom::Geometry> build(const geom::Geometry* geom);
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};
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} // namespace geos::operation::polygonize
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} // namespace geos::operation
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} // namespace geos
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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