Class DirectedEdge

Inheritance
object
EdgeEnd
DirectedEdge
Implements
Inherited Members
Namespace: NetTopologySuite.GeometriesGraph
Assembly: NetTopologySuite.dll
Syntax
public class DirectedEdge : EdgeEnd, IComparable<EdgeEnd>

Constructors

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DirectedEdge(Edge, bool)

Declaration
public DirectedEdge(Edge edge, bool isForward)
Parameters
Type Name Description
Edge edge
bool isForward

Properties

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DepthDelta

Declaration
public int DepthDelta { get; }
Property Value
Type Description
int
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EdgeRing

Declaration
public EdgeRing EdgeRing { get; set; }
Property Value
Type Description
EdgeRing
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InResult

Declaration
public bool InResult { get; set; }
Property Value
Type Description
bool
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IsForward

Declaration
public bool IsForward { get; protected set; }
Property Value
Type Description
bool
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IsInResult

Declaration
public bool IsInResult { get; }
Property Value
Type Description
bool
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IsInteriorAreaEdge

This is an interior Area edge if its label is an Area label for both Geometries and for each Geometry both sides are in the interior.

Declaration
public bool IsInteriorAreaEdge { get; }
Property Value
Type Description
bool

true if this is an interior Area edge.
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IsLineEdge

Gets a value indicating if this edge is a line edge.

It is if
  • at least one of the labels is a line label
  • any labels which are not line labels have all Location = Exterior.
Declaration
public bool IsLineEdge { get; }
Property Value
Type Description
bool

true if edge is a line edge
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IsVisited

Declaration
public bool IsVisited { get; }
Property Value
Type Description
bool
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MinEdgeRing

Declaration
public EdgeRing MinEdgeRing { get; set; }
Property Value
Type Description
EdgeRing
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Next

Declaration
public DirectedEdge Next { get; set; }
Property Value
Type Description
DirectedEdge
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NextMin

Declaration
public DirectedEdge NextMin { get; set; }
Property Value
Type Description
DirectedEdge
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Sym

Declaration
public DirectedEdge Sym { get; set; }
Property Value
Type Description
DirectedEdge
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Visited

Declaration
public bool Visited { get; set; }
Property Value
Type Description
bool
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VisitedEdge

Gets or sets a value indicating if both Visited and Sym.Visited are true.

Setting the property marks both DirectedEdges attached to a given Edge.

This is used for edges corresponding to lines, which will only appear oriented in a single direction in the result.
Declaration
public bool VisitedEdge { get; set; }
Property Value
Type Description
bool

Methods

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DepthFactor(Location, Location)

Computes the factor for the change in depth when moving from one location to another. E.g. if crossing from the Interior to the Exterior the depth decreases, so the factor is -1.

Declaration
public static int DepthFactor(Location currLocation, Location nextLocation)
Parameters
Type Name Description
Location currLocation

The current location
Location nextLocation

The next location
Returns
Type Description
int

Change of depth moving from currLocation to nextLocation
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GetDepth(Position)

Declaration
public int GetDepth(Position position)
Parameters
Type Name Description
Position position
Returns
Type Description
int
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GetDepth(Positions)

Declaration
[Obsolete("Use GetDepth(Geometries.Position)")]
public int GetDepth(Positions position)
Parameters
Type Name Description
Positions position
Returns
Type Description
int
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SetDepth(Position, int)

Set depth for a position

Declaration
public void SetDepth(Position position, int depthVal)
Parameters
Type Name Description
Position position

The position to update
int depthVal

The depth at the provided position
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SetDepth(Positions, int)

Declaration
[Obsolete("Use SetDepth(Geometries.Position, int)")]
public void SetDepth(Positions position, int depthVal)
Parameters
Type Name Description
Positions position
int depthVal
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SetEdgeDepths(Position, int)

Set both edge depths. One depth for a given side is provided. The other is computed depending on the Location transition and the depthDelta of the edge.

Declaration
public void SetEdgeDepths(Position position, int depth)
Parameters
Type Name Description
Position position

The position to update
int depth

The depth at the provided position
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SetEdgeDepths(Positions, int)

Set both edge depths. One depth for a given side is provided. The other is computed depending on the Location transition and the depthDelta of the edge.

Declaration
[Obsolete("Use SetEdgeDepths(Topology.Postion, int)")]
public void SetEdgeDepths(Positions position, int depth)
Parameters
Type Name Description
Positions position

The position to update
int depth

The depth at the provided position
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Write(StreamWriter)

Declaration
public override void Write(StreamWriter outstream)
Parameters
Type Name Description
StreamWriter outstream
Overrides
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WriteEdge(StreamWriter)

Declaration
public void WriteEdge(StreamWriter outstream)
Parameters
Type Name Description
StreamWriter outstream

Implements