RelateEdge.h
/**********************************************************************
*
* GEOS - Geometry Engine Open Source
* http://geos.osgeo.org
*
* Copyright (c) 2024 Martin Davis
* Copyright (C) 2024 Paul Ramsey <pramsey@cleverelephant.ca>
*
* 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.
*
**********************************************************************/
#pragma once
#include <geos/geom/Location.h>
#include <geos/export.h>
#include <memory>
#include <vector>
// Forward declarations
namespace geos {
namespace operation {
namespace relateng {
class RelateNode;
}
}
namespace geom {
class CoordinateXY;
class Geometry;
}
}
namespace geos { // geos.
namespace operation { // geos.operation
namespace relateng { // geos.operation.relateng
class GEOS_DLL RelateEdge {
using CoordinateXY = geos::geom::CoordinateXY;
using Geometry = geos::geom::Geometry;
using Location = geos::geom::Location;
private:
static constexpr Location LOC_UNKNOWN = Location::NONE;
// Members
const RelateNode* node;
const CoordinateXY* dirPt;
int aDim = DIM_UNKNOWN;
Location aLocLeft = LOC_UNKNOWN;
Location aLocRight = LOC_UNKNOWN;
Location aLocLine = LOC_UNKNOWN;
int bDim = DIM_UNKNOWN;
Location bLocLeft = LOC_UNKNOWN;
Location bLocRight = LOC_UNKNOWN;
Location bLocLine = LOC_UNKNOWN;
public:
// Constants
static constexpr bool IS_FORWARD = true;
static constexpr bool IS_REVERSE = false;
static constexpr int DIM_UNKNOWN = -1;
// Constructors
RelateEdge(
const RelateNode* node, const CoordinateXY* pt,
bool isA, bool isForward);
RelateEdge(
const RelateNode* node, const CoordinateXY* pt,
bool isA);
RelateEdge(
const RelateNode* node, const CoordinateXY* pt,
bool isA, Location locLeft, Location locRight, Location locLine);
// Methods
static RelateEdge* create(
const RelateNode* node,
const CoordinateXY* dirPt,
bool isA, int dim, bool isForward);
static std::size_t findKnownEdgeIndex(
std::vector<std::unique_ptr<RelateEdge>>& edges,
bool isA);
static void setAreaInterior(
std::vector<std::unique_ptr<RelateEdge>>& edges,
bool isA);
bool isInterior(bool isA, int position) const;
Location location(bool isA, int position) const;
int compareToEdge(const CoordinateXY* edgeDirPt) const;
void setDimLocations(bool isA, int dim, Location loc);
void setAreaInterior(bool isA);
void setLocation(bool isA, int pos, Location loc);
void setAllLocations(bool isA, Location loc);
void setUnknownLocations(bool isA, Location loc);
void merge(bool isA, int dim, bool isForward);
std::string toString() const;
friend std::ostream& operator<<(std::ostream& os, const RelateEdge& re);
private:
// Methods
void mergeSideLocation(bool isA, int pos, Location loc);
void mergeDimEdgeLoc(bool isA, Location locEdge);
void setDimension(bool isA, int dimension);
void setLeft(bool isA, Location loc);
void setRight(bool isA, Location loc);
void setOn(bool isA, Location loc);
int dimension(bool isA) const;
bool isKnown(bool isA) const;
bool isKnown(bool isA, int pos) const;
void setLocations(bool isA, Location locLeft, Location locRight, Location locLine);
void setLocationsLine(bool isA);
void setLocationsArea(bool isA, bool isForward);
std::string labelString() const;
std::string locationString(bool isA) const;
};
} // namespace geos.operation.relateng
} // namespace geos.operation
} // namespace geos
geos::geom::Geometry
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition Geometry.h:196
geos::geom
Definition Angle.h:26
geos::geom::Location
Location
Constants representing the location of a point relative to a geometry.
Definition Location.h:32
geos::operation
Provides classes for implementing operations on geometries.
Definition CleanCoverage.h:34
geos
Basic namespace for all GEOS functionalities.
Definition geos.h:38