107 lines
2.9 KiB
C
107 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) 2005-2006 Refractions Research Inc.
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* Copyright (C) 2001-2002 Vivid Solutions 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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*
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* Last port: linearref/LinearGeometryBuilder.java rev. 1.1
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*
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**********************************************************************/
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#pragma once
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#include <geos/geom/Coordinate.h>
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#include <geos/geom/CoordinateList.h>
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#include <geos/geom/Geometry.h>
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#include <geos/geom/GeometryFactory.h>
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#include <geos/linearref/LinearLocation.h>
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#include <vector>
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namespace geos {
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namespace linearref { // geos::linearref
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/** \brief
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* Builds a linear geometry ([LineString](@ref geom::LineString) or
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* [MultiLineString](@ref geom::MultiLineString)) incrementally (point-by-point).
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*
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* @version 1.7
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*/
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class LinearGeometryBuilder {
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private:
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const geom::GeometryFactory* geomFact;
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typedef std::vector<std::unique_ptr<geom::Geometry>> GeomPtrVect;
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// Geometry elements owned by this class
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GeomPtrVect lines;
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bool ignoreInvalidLines;
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bool fixInvalidLines;
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std::unique_ptr<geom::CoordinateSequence> coordList;
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geom::Coordinate lastPt;
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public:
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LinearGeometryBuilder(const geom::GeometryFactory* geomFact);
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~LinearGeometryBuilder();
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/** \brief
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* Allows invalid lines to be ignored rather than causing Exceptions.
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*
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* An invalid line is one which has only one unique point.
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*
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* @param ignoreInvalidLines `true` if short lines are
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* to be ignored
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*/
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void setIgnoreInvalidLines(bool ignoreInvalidLines);
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/** \brief
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* Allows invalid lines to be ignored rather than causing Exceptions.
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*
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* An invalid line is one which has only one unique point.
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*
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* @param fixInvalidLines `true` if short lines are
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* to be ignored
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*/
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void setFixInvalidLines(bool fixInvalidLines);
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/** \brief
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* Adds a point to the current line.
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*
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* @param pt the Coordinate to add
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*/
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void add(const geom::Coordinate& pt);
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/** \brief
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* Adds a point to the current line.
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*
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* @param pt the Coordinate to add
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* @param allowRepeatedPoints if set to `false`, repeated coordinates are
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* collapsed
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*/
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void add(const geom::Coordinate& pt, bool allowRepeatedPoints);
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// NOTE strk: why return by value ?
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geom::Coordinate getLastCoordinate() const;
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/// Terminate the current LineString.
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void endLine();
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std::unique_ptr<geom::Geometry> getGeometry();
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};
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} // namespace geos.linearref
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} // namespace geos
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