ScaledNoder.h
/**********************************************************************
*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* Copyright (C) 2006 Refractions Research 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: noding/ScaledNoder.java rev. 1.3 (JTS-1.7.1)
*
**********************************************************************/
#pragma once
#include <geos/export.h>
#include <cassert>
#include <vector>
#include <geos/noding/Noder.h> // for inheritance
#include <geos/util.h>
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
// Forward declarations
namespace geos {
namespace geom {
class Coordinate;
class CoordinateSequence;
}
namespace noding {
class SegmentString;
}
}
namespace geos {
namespace noding { // geos.noding
class GEOS_DLL ScaledNoder : public Noder { // , public geom::CoordinateFilter { // implements Noder
public:
bool
isIntegerPrecision()
{
return (scaleFactor == 1.0);
}
ScaledNoder(Noder& n, double nScaleFactor,
double nOffsetX = 0.0, double nOffsetY = 0.0)
:
noder(n),
scaleFactor(nScaleFactor),
offsetX(nOffsetX),
offsetY(nOffsetY),
isScaled(nScaleFactor != 1.0)
{}
~ScaledNoder() override;
std::vector<SegmentString*>* getNodedSubstrings() const override;
void computeNodes(std::vector<SegmentString*>* inputSegStr) override;
//void filter(Coordinate& c);
void
filter_ro(const geom::Coordinate* c)
{
::geos::ignore_unused_variable_warning(c);
assert(0);
}
void filter_rw(geom::Coordinate* c) const;
private:
Noder& noder;
double scaleFactor;
double offsetX;
double offsetY;
bool isScaled;
void rescale(std::vector<SegmentString*>& segStrings) const;
void scale(std::vector<SegmentString*>& segStrings) const;
class Scaler;
class ReScaler;
friend class ScaledNoder::Scaler;
friend class ScaledNoder::ReScaler;
mutable std::vector<geom::CoordinateSequence*> newCoordSeq;
// Declare type as noncopyable
ScaledNoder(const ScaledNoder& other) = delete;
ScaledNoder& operator=(const ScaledNoder& rhs) = delete;
};
} // namespace geos.noding
} // namespace geos
#ifdef _MSC_VER
#pragma warning(pop)
#endif
geos::geom::CoordinateSequence
The internal representation of a list of coordinates inside a Geometry.
Definition CoordinateSequence.h:56
geos::geom::Coordinate
Coordinate is the lightweight class used to store coordinates.
Definition Coordinate.h:217
geos::noding::Noder
Computes all intersections between segments in a set of SegmentString.
Definition Noder.h:46
geos::noding::ScaledNoder
Wraps a Noder and transforms its input into the integer domain.
Definition ScaledNoder.h:58
geos::noding::ScaledNoder::computeNodes
void computeNodes(std::vector< SegmentString * > *inputSegStr) override
Computes the noding for a collection of SegmentStrings.
geos::noding::ScaledNoder::getNodedSubstrings
std::vector< SegmentString * > * getNodedSubstrings() const override
Returns a collection of fully noded SegmentStrings. The SegmentStrings have the same context as their...
geos::noding::SegmentString
An interface for classes which represent a sequence of contiguous line segments.
Definition SegmentString.h:47
geos::geom
Definition Angle.h:26
geos::noding
Classes to compute nodings for arrangements of line segments and line segment sequences.
Definition CoverageCleaner.h:42
geos
Basic namespace for all GEOS functionalities.
Definition geos.h:38