133 lines
2.9 KiB
C++
133 lines
2.9 KiB
C++
/**********************************************************************
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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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*
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* Last port: noding/ScaledNoder.java rev. 1.3 (JTS-1.7.1)
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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 <cassert>
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#include <vector>
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#include <geos/noding/Noder.h> // for inheritance
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#include <geos/util.h>
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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 Coordinate;
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class CoordinateSequence;
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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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* Wraps a {@link Noder} and transforms its input
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* into the integer domain.
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*
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* This is intended for use with Snap-Rounding noders,
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* which typically are only intended to work in the integer domain.
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* Offsets can be provided to increase the number of digits of
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* available precision.
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*
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*/
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class GEOS_DLL ScaledNoder : public Noder { // , public geom::CoordinateFilter { // implements Noder
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public:
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bool
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isIntegerPrecision()
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{
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return (scaleFactor == 1.0);
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}
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ScaledNoder(Noder& n, double nScaleFactor,
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double nOffsetX = 0.0, double nOffsetY = 0.0)
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:
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noder(n),
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scaleFactor(nScaleFactor),
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offsetX(nOffsetX),
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offsetY(nOffsetY),
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isScaled(nScaleFactor != 1.0)
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{}
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~ScaledNoder() override;
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std::vector<SegmentString*>* getNodedSubstrings() const override;
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void computeNodes(std::vector<SegmentString*>* inputSegStr) override;
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//void filter(Coordinate& c);
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void
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filter_ro(const geom::Coordinate* c)
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{
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::geos::ignore_unused_variable_warning(c);
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assert(0);
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}
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void filter_rw(geom::Coordinate* c) const;
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private:
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Noder& noder;
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double scaleFactor;
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double offsetX;
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double offsetY;
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bool isScaled;
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void rescale(std::vector<SegmentString*>& segStrings) const;
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void scale(std::vector<SegmentString*>& segStrings) const;
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class Scaler;
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class ReScaler;
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friend class ScaledNoder::Scaler;
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friend class ScaledNoder::ReScaler;
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mutable std::vector<geom::CoordinateSequence*> newCoordSeq;
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// Declare type as noncopyable
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ScaledNoder(const ScaledNoder& other) = delete;
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ScaledNoder& operator=(const ScaledNoder& rhs) = delete;
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};
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} // namespace geos.noding
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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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