openfluid::landr::LandRTools Class Reference

Set of tools to manage LandR elements. More...

#include <landr/LandRTools.hpp>

Public Types
enum	Relationship {   NONE, INTERSECTS, CONTAINS, EQUALS,   TOUCHES }

Static Public Member Functions
static geos::geom::LineString *	getMergedLineStringFromGeometry (geos::geom::Geometry *Geom)
	Returns a geos::geom::LineString representing the linearized input geos::geom::Geometry. More...
static std::vector < geos::geom::LineString * > *	getMergedLineStringsFromGeometry (geos::geom::Geometry *Geom)
	Returns a vector of geos::geom::LineString representing the linearized input geos::geom::Geometry. More...
static std::vector < geos::geom::LineString * >	getVectorOfExteriorRings (openfluid::landr::VectorDataset &Val)
	Returns all exterior rings of the polygon-typed VectorDataset. More...
static std::vector < geos::geom::LineString * >	getVectorOfLines (openfluid::landr::VectorDataset &Val)
	Returns all geos::geom::LineString composing of the linestring-typed VectorDataset. More...
static std::vector < geos::geom::LineString * > *	getNodedLines (geos::geom::Geometry *Geom1, geos::geom::Geometry *Geom2, double SnapTolerance=0, double PrecisionReducer=10000000)
	Gets all full noded geos::geom::LineString from intersection between geom1 and geom2, with snap tolerance. More...
static geos::geom::Geometry *	computeSnapOverlayUnion (geos::geom::Geometry &Geom1, geos::geom::Geometry &Geom2, double SnapTolerance=0)
	Same as from geos::operation::overlay::snap::SnapOverlayOp::Union(), but with ability to use the wished snap tolerance value. More...
static bool	exists (geos::geom::LineString *Line, std::list< geos::geom::LineString * > RefLines, double Tolerance=0)
	Returns true if a geos::geom::LineString is exactly equals of an element of a list of geos::geom::LineString, up to a specified tolerance. More...
static void	polygonizeGeometry (std::vector< geos::geom::Geometry * > &Lines, std::vector< geos::geom::Polygon * > &Polygons, std::vector< const geos::geom::LineString * > &Dangles)
	Creates all possible geos::geom::Polygon from a geos::geom::Geometry. More...
static void	markVisitedNodesUsingDFS (geos::planargraph::Node *Node)
	Recursive depth first search algorithm in a LineStringGraph and mark visited Nodes. More...
static std::vector < geos::geom::Polygon * >	computeIntersectPolygons (geos::geom::Geometry *Geom1, geos::geom::Geometry *Geom2)
	Intersection of two geos::geom::Geometry of Polygons. More...
static std::vector < geos::geom::LineString * >	splitLineStringByPoint (geos::geom::LineString &Entity, geos::geom::Point &Point, double SnapTolerance)
	Splits a geos::geom::LineString by a geos::geom::Point. More...
static void	splitLineStringByPoints (geos::geom::LineString &Entity, std::vector< geos::geom::Point * > &Points, double SnapTolerance, std::vector< geos::geom::LineString * > &vLines, unsigned int step=0)
	Recursively split operation on a geos::geom::LineString by a vector of geos::geom::Point. More...
static std::vector < geos::geom::LineString * > *	cleanLineStrings (std::vector< geos::geom::LineString * > vLines, double SnapTolerance)
	Clean a vector of geos::geom::LineString (break at each intersection and remove duplicate geometry) More...
static std::vector < geos::geom::Point * >	getNodesFromVectorOfLines (std::vector< geos::geom::LineString * > &NodedLines)
	Returns the nodes of a vector of geos::geom::LineString. More...
static void	markInvertedLineStringEntityUsingDFS (geos::planargraph::Node *Node, std::vector< int > &vectIdent)
	Returns the inverted openfluid::landr::LineStringEntity of a geos::planargraph using a recursive method. More...

Detailed Description

Set of tools to manage LandR elements.

Member Enumeration Documentation

enum openfluid::landr::LandRTools::Relationship

Enumerator
NONE
INTERSECTS
CONTAINS
EQUALS
TOUCHES

Member Function Documentation

static std::vector<geos::geom::LineString*>* openfluid::landr::LandRTools::cleanLineStrings ( std::vector< geos::geom::LineString * >  vLines, double  SnapTolerance  )

static

Clean a vector of geos::geom::LineString (break at each intersection and remove duplicate geometry)

Parameters

vLines	An existent vector of geos::geom::LineString.
SnapTolerance	The tolerance to use.

Returns

a vector of geos::geom::LineString.

static std::vector<geos::geom::Polygon*> openfluid::landr::LandRTools::computeIntersectPolygons ( geos::geom::Geometry *  Geom1, geos::geom::Geometry *  Geom2  )

static

Intersection of two geos::geom::Geometry of Polygons.

Parameters

Geom1	The geos::geom::Geometry to join with Geom2.
Geom2	The other geos::geom::Geometry.

Returns

A vector of geos::geom::Polygon representing the intersection of Geom1 and Geom2.

static geos::geom::Geometry* openfluid::landr::LandRTools::computeSnapOverlayUnion ( geos::geom::Geometry &  Geom1, geos::geom::Geometry &  Geom2, double  SnapTolerance = 0  )

static

Same as from geos::operation::overlay::snap::SnapOverlayOp::Union(), but with ability to use the wished snap tolerance value.

Parameters

Geom1	The geos::geom::Geometry to join with Geom2.
Geom2	The other geos::geom::Geometry.
SnapTolerance	The tolerance to use, default is 0.

Returns

A new geos::geom::Geometry representing the union of Geom1 and Geom2 according to SnapTolerance value.

static bool openfluid::landr::LandRTools::exists ( geos::geom::LineString *  Line, std::list< geos::geom::LineString * >  RefLines, double  Tolerance = 0  )

static

Returns true if a geos::geom::LineString is exactly equals of an element of a list of geos::geom::LineString, up to a specified tolerance.

Parameters

Line	The geos::geom::LineString to compare.
RefLines	The list of geos::geom::LineString to compare to.
Tolerance	The tolerance to use.

static geos::geom::LineString* openfluid::landr::LandRTools::getMergedLineStringFromGeometry ( geos::geom::Geometry *  Geom )

static

Returns a geos::geom::LineString representing the linearized input geos::geom::Geometry.

Parameters

Geom	The geos::geom::Geometry to linearize.

Returns

A new allocated geos::geom::LineString representing the linearized input geos::geom::Geometry, or 0 if the geos::geom::Geometry cannot be linearized into a single geos::geom::LineString.

static std::vector<geos::geom::LineString*>* openfluid::landr::LandRTools::getMergedLineStringsFromGeometry ( geos::geom::Geometry *  Geom )

static

Returns a vector of geos::geom::LineString representing the linearized input geos::geom::Geometry.

Parameters

Geom	The geos::geom::Geometry to linearize.

Returns

A new allocated vector of geos::geom::LineString representing the maximal linearized input geos::geom::Geometry, or 0 if the geos::geom::Geometry is not "Line" typed.

static std::vector<geos::geom::LineString*>* openfluid::landr::LandRTools::getNodedLines ( geos::geom::Geometry *  Geom1, geos::geom::Geometry *  Geom2, double  SnapTolerance = 0, double  PrecisionReducer = 10000000  )

static

Gets all full noded geos::geom::LineString from intersection between geom1 and geom2, with snap tolerance.

Parameters

Geom1	The geos::geom::Geometry to node with Geom2.
Geom2	The other geos::geom::Geometry.
SnapTolerance	The tolerance to use while computing intersections and equality of lines.
PrecisionReducer	The PrecisionModel value for reducing coordinates precision, default is 10000000 (7 digits).

Returns

A vector of geos::geom::LineString, representing all input lines, cut at each node.

static std::vector<geos::geom::Point*> openfluid::landr::LandRTools::getNodesFromVectorOfLines ( std::vector< geos::geom::LineString * > &  NodedLines )

static

Returns the nodes of a vector of geos::geom::LineString.

Parameters

NodedLines

A vector of geos::geom::LineString.

Returns

A vector of geos::geom::Point.

static std::vector<geos::geom::LineString*> openfluid::landr::LandRTools::getVectorOfExteriorRings ( openfluid::landr::VectorDataset &  Val )

static

Returns all exterior rings of the polygon-typed VectorDataset.

Parameters

Val	A VectorDataset of polygons.

Returns

A vector of new allocated geos::geom::LineString representing exterior rings.

Exceptions

base::OFException

if the VectorDataset is not polygon-typed.

static std::vector<geos::geom::LineString*> openfluid::landr::LandRTools::getVectorOfLines ( openfluid::landr::VectorDataset &  Val )

static

Returns all geos::geom::LineString composing of the linestring-typed VectorDataset.

Parameters

Val	A VectorDataset of linestrings.

Returns

A vector of new allocated geos::geom::Geometry representing lines.

Exceptions

base::OFException

if the VectorDataset is not linestring-typed.

static void openfluid::landr::LandRTools::markInvertedLineStringEntityUsingDFS ( geos::planargraph::Node *  Node, std::vector< int > &  vectIdent  )

static

Returns the inverted openfluid::landr::LineStringEntity of a geos::planargraph using a recursive method.

Parameters

Node	A geos::planargraph::node of a geos::planargraph.
vectIdent	A vector which will contain the identifier of each inverted openfluid::landr::LinestringEntity.

static void openfluid::landr::LandRTools::markVisitedNodesUsingDFS ( geos::planargraph::Node *  Node )

static

Recursive depth first search algorithm in a LineStringGraph and mark visited Nodes.

Parameters

Node	the begin geos::planargraph::Node of LineStringGraph

static void openfluid::landr::LandRTools::polygonizeGeometry ( std::vector< geos::geom::Geometry * > &  Lines, std::vector< geos::geom::Polygon * > &  Polygons, std::vector< const geos::geom::LineString * > &  Dangles  )

static

Creates all possible geos::geom::Polygon from a geos::geom::Geometry.

Parameters

Lines	The input vector of geos::geom::Geometry to polygonize.
Polygons	The output vector of newly created geos::geom::Polygon.
Dangles	The output vector of dangle geos::geom::LineString.

static std::vector<geos::geom::LineString*> openfluid::landr::LandRTools::splitLineStringByPoint ( geos::geom::LineString &  Entity, geos::geom::Point &  Point, double  SnapTolerance  )

static

Splits a geos::geom::LineString by a geos::geom::Point.

Parameters

Entity	An existent geos::geom::LineString.
Point	A geos::geom::Point.
SnapTolerance	The threshold distance used to find Point on Line.

Returns

a vector of geos::geom::LineString, or empty vector if splitting operation is null.

static void openfluid::landr::LandRTools::splitLineStringByPoints ( geos::geom::LineString &  Entity, std::vector< geos::geom::Point * > &  Points, double  SnapTolerance, std::vector< geos::geom::LineString * > &  vLines, unsigned int  step = 0  )

static

Recursively split operation on a geos::geom::LineString by a vector of geos::geom::Point.

Parameters

Entity	An existent geos::geom::LineString.
Points	A vector of geos::geom::Point.
SnapTolerance	The threshold distance used to find Point on Line.
vLines	the resulting vector of geos::geom::LineString splitted.
step	iterator of the vector of Point; default is 0.

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The documentation for this class was generated from the following file:

• landr/LandRTools.hpp