110 lines
2.9 KiB
C
110 lines
2.9 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) 2006 Refractions Research Inc.
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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 <geos/export.h>
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#include <vector>
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#include <iostream>
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#include <geos/algorithm/LineIntersector.h>
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//#include <geos/geom/Coordinate.h>
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// Forward declarations
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namespace geos {
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namespace geom {
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class Coordinate;
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}
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namespace noding {
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class SegmentString;
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}
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}
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namespace geos {
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namespace noding { // geos.noding
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/** \brief
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* Validates that a collection of {@link SegmentString}s is correctly noded.
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* Throws a TopologyException if a noding error is found.
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*
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* Last port: noding/NodingValidator.java rev. 1.6 (JTS-1.7)
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*
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*/
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class GEOS_DLL NodingValidator {
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private:
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algorithm::LineIntersector li;
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const std::vector<SegmentString*>& segStrings;
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/**
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* Checks if a segment string contains a segment
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* pattern a-b-a (which implies a self-intersection)
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*/
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void checkCollapses() const;
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void checkCollapses(const SegmentString& ss) const;
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void checkCollapse(const geom::Coordinate& p0, const geom::Coordinate& p1,
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const geom::Coordinate& p2) const;
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/**
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* Checks all pairs of segments for intersections at an
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* interior point of a segment
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*/
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void checkInteriorIntersections();
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void checkInteriorIntersections(const SegmentString& ss0,
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const SegmentString& ss1);
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void checkInteriorIntersections(
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const SegmentString& e0, std::size_t segIndex0,
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const SegmentString& e1, std::size_t segIndex1);
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/**
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* Checks for intersections between an endpoint of a segment string
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* and an interior vertex of another segment string
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*/
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void checkEndPtVertexIntersections() const;
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void checkEndPtVertexIntersections(const geom::Coordinate& testPt,
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const std::vector<SegmentString*>& segStrings) const;
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/**
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* @return true if there is an intersection point which is not an
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* endpoint of the segment p0-p1
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*/
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bool hasInteriorIntersection(const algorithm::LineIntersector& aLi,
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const geom::Coordinate& p0, const geom::Coordinate& p1) const;
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// Declare type as noncopyable
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NodingValidator(const NodingValidator& other) = delete;
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NodingValidator& operator=(const NodingValidator& rhs) = delete;
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public:
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NodingValidator(const std::vector<SegmentString*>& newSegStrings):
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segStrings(newSegStrings)
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{}
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~NodingValidator() {}
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void checkValid();
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};
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} // namespace geos.noding
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} // namespace geos
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