LinearIterator.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2005-2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 *
 * 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: linearref/LinearIterator.java r463
 *
 **********************************************************************/
 
#pragma once
 
#include <string>
 
#include <geos/geom/Coordinate.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/LineSegment.h>
#include <geos/linearref/LinearLocation.h>
 
namespace geos {
namespace linearref {
 
class LinearIterator {
public:
    LinearIterator(const geom::Geometry* linear);
 
    LinearIterator(const geom::Geometry* linear, const LinearLocation& start);
 
    LinearIterator(const geom::Geometry* linear, std::size_t componentIndex, std::size_t vertexIndex);
 
    bool hasNext() const;
 
 
    void next();
 
    bool isEndOfLine() const;
 
    std::size_t getComponentIndex() const;
 
    std::size_t getVertexIndex() const;
 
    const geom::LineString* getLine() const;
 
    geom::Coordinate getSegmentStart() const;
 
    geom::Coordinate getSegmentEnd() const;
 
private:
 
    static std::size_t segmentEndVertexIndex(const LinearLocation& loc);
 
    const geom::LineString* currentLine;
    std::size_t vertexIndex;
    std::size_t componentIndex;
    const geom::Geometry* linear;
    const std::size_t numLines;
 
    void loadCurrentLine();
 
    // Declare type as noncopyable
    LinearIterator(const LinearIterator& other) = delete;
    LinearIterator& operator=(const LinearIterator& rhs) = delete;
};
 
}
} // namespace geos::linearref