84 lines
1.8 KiB
C
84 lines
1.8 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 (C) 2021 Paul Ramsey <pramsey@cleverelephant.ca>
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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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#pragma once
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#include <unordered_set>
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#include <geos/geom/CoordinateSequenceFilter.h>
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#include <geos/geom/Coordinate.h>
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#include <geos/geom/LineSegment.h>
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#include <geos/export.h>
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namespace geos {
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namespace geom {
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class CoordinateSequence;
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class Geometry;
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}
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}
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using geos::geom::Coordinate;
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using geos::geom::CoordinateSequence;
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using geos::geom::CoordinateSequenceFilter;
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using geos::geom::Geometry;
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using geos::geom::LineSegment;
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namespace geos {
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namespace coverage { // geos::coverage
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class CoverageBoundarySegmentFinder : public CoordinateSequenceFilter
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{
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public:
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CoverageBoundarySegmentFinder(LineSegment::UnorderedSet& segs)
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: m_boundarySegs(segs)
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{};
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bool isGeometryChanged() const override {
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return false;
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}
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bool isDone() const override {
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return false;
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}
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void filter_ro(const CoordinateSequence& seq, std::size_t i) override;
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static LineSegment::UnorderedSet
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findBoundarySegments(const std::vector<const Geometry*>& geoms);
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static bool isBoundarySegment(
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const LineSegment::UnorderedSet& boundarySegs,
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const CoordinateSequence* seq,
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std::size_t i);
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private:
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static LineSegment
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createSegment(const CoordinateSequence& seq, std::size_t i);
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LineSegment::UnorderedSet& m_boundarySegs;
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}; // CoverageBoundarySegmentFinder
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} // geos::coverage
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} // geos
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