Class GeometryGraph

A GeometryGraph is a graph that models a given Geometry.

Inheritance

object

PlanarGraph

GeometryGraph

Inherited Members

PlanarGraph.LinkResultDirectedEdges(IList<Node>)

PlanarGraph.edgeEndList

PlanarGraph.GetEdgeEnumerator()

PlanarGraph.EdgeEnds

PlanarGraph.Edges

PlanarGraph.IsBoundaryNode(int, Coordinate)

PlanarGraph.InsertEdge(Edge)

PlanarGraph.Add(EdgeEnd)

PlanarGraph.GetNodeEnumerator()

PlanarGraph.Nodes

PlanarGraph.NodeMap

PlanarGraph.AddNode(Node)

PlanarGraph.AddNode(Coordinate)

PlanarGraph.Find(Coordinate)

PlanarGraph.AddEdges(IList<Edge>)

PlanarGraph.LinkResultDirectedEdges()

PlanarGraph.LinkAllDirectedEdges()

PlanarGraph.FindEdgeEnd(Edge)

PlanarGraph.FindEdge(Coordinate, Coordinate)

PlanarGraph.FindEdgeInSameDirection(Coordinate, Coordinate)

PlanarGraph.WriteEdges(StreamWriter)

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: NetTopologySuite.GeometriesGraph

Assembly: NetTopologySuite.dll

Syntax

public class GeometryGraph : PlanarGraph

Constructors

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GeometryGraph(int, Geometry)

Declaration

public GeometryGraph(int argIndex, Geometry parentGeom)

Parameters

Type	Name	Description
int	argIndex
Geometry	parentGeom

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GeometryGraph(int, Geometry, IBoundaryNodeRule)

Declaration

public GeometryGraph(int argIndex, Geometry parentGeom, IBoundaryNodeRule boundaryNodeRule)

Parameters

Type	Name	Description
int	argIndex
Geometry	parentGeom
IBoundaryNodeRule	boundaryNodeRule

Properties

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BoundaryNodeRule

Gets the IBoundaryNodeRule used with this geometry graph.

Declaration

public IBoundaryNodeRule BoundaryNodeRule { get; }

Property Value

Type	Description
IBoundaryNodeRule

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BoundaryNodes

Declaration

public IList<Node> BoundaryNodes { get; }

Property Value

Type	Description
IList<Node>

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Geometry

Declaration

public Geometry Geometry { get; }

Property Value

Type	Description
Geometry

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HasTooFewPoints

Declaration

public bool HasTooFewPoints { get; }

Property Value

Type	Description
bool

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InvalidPoint

Declaration

public Coordinate InvalidPoint { get; }

Property Value

Type	Description
Coordinate

Methods

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AddEdge(Edge)

Add an Edge computed externally. The label on the Edge is assumed to be correct.

Declaration

public void AddEdge(Edge e)

Parameters

Type	Name	Description
Edge	e	An `Edge`

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AddPoint(Coordinate)

Add a point computed externally. The point is assumed to be a Point Geometry part, which has a location of INTERIOR.

Declaration

public void AddPoint(Coordinate pt)

Parameters

Type	Name	Description
Coordinate	pt	A `Coordinate`

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ComputeEdgeIntersections(GeometryGraph, LineIntersector, bool)

Declaration

public SegmentIntersector ComputeEdgeIntersections(GeometryGraph g, LineIntersector li, bool includeProper)

Parameters

Type	Name	Description
GeometryGraph	g
LineIntersector	li
bool	includeProper

Returns

Type	Description
SegmentIntersector

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ComputeSelfNodes(LineIntersector, bool)

Compute self-nodes, taking advantage of the Geometry type to minimize the number of intersection tests. (E.g. rings are not tested for self-intersection, since they are assumed to be valid).

Declaration

public SegmentIntersector ComputeSelfNodes(LineIntersector li, bool computeRingSelfNodes)

Parameters

Type	Name	Description
LineIntersector	li	The `LineIntersector` to use.
bool	computeRingSelfNodes	If `false`, intersection checks are optimized to not test rings for self-intersection.

Returns

Type	Description
SegmentIntersector	The computed SegmentIntersector, containing information about the intersections found.

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ComputeSelfNodes(LineIntersector, bool, bool)

Compute self-nodes, taking advantage of the Geometry type to minimize the number of intersection tests. (E.g.rings are not tested for self-intersection, since they are assumed to be valid).

Declaration

[Obsolete("Shrot circuiting no longer allowed")]
public SegmentIntersector ComputeSelfNodes(LineIntersector li, bool computeRingSelfNodes, bool isDoneIfProperInt)

Parameters

Type	Name	Description
LineIntersector	li	The `LineIntersector` to use
bool	computeRingSelfNodes	If `false`, intersection checks are optimized to not test rings for self-intersection
bool	isDoneIfProperInt	Short-circuit the intersection computation if a proper intersection is found

Returns

Type	Description
SegmentIntersector

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ComputeSplitEdges(IList<Edge>)

Declaration

public void ComputeSplitEdges(IList<Edge> edgelist)

Parameters

Type	Name	Description
IList<Edge>	edgelist

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DetermineBoundary(IBoundaryNodeRule, int)

Determine boundary

Declaration

public static Location DetermineBoundary(IBoundaryNodeRule boundaryNodeRule, int boundaryCount)

Parameters

Type	Name	Description
IBoundaryNodeRule	boundaryNodeRule	The boundary node rule to apply for determination of the boundary
int	boundaryCount	The number of component boundaries that a point occurs in.

Returns

Type	Description
Location	Boundary or Interior

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FindEdge(LineString)

Declaration

public Edge FindEdge(LineString line)

Parameters

Type	Name	Description
LineString	line

Returns

Type	Description
Edge

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GetBoundaryPoints()

Declaration

public Coordinate[] GetBoundaryPoints()

Returns

Type	Description
Coordinate[]

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Locate(Coordinate)

Determines the Location of the given Coordinate in this geometry.

Declaration

public Location Locate(Coordinate pt)

Parameters

Type	Name	Description
Coordinate	pt	The point to test

Returns

Type	Description
Location	The location of the point in the geometry