Class Edge

Inheritance
object
GraphComponent
Edge
Inherited Members
Namespace: NetTopologySuite.GeometriesGraph
Assembly: NetTopologySuite.dll
Syntax
public class Edge : GraphComponent

Constructors

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Edge(Coordinate[])

Declaration
public Edge(Coordinate[] pts)
Parameters
Type Name Description
Coordinate[] pts
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Edge(Coordinate[], Label)

Declaration
public Edge(Coordinate[] pts, Label label)
Parameters
Type Name Description
Coordinate[] pts
Label label

Properties

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CollapsedEdge

Declaration
public Edge CollapsedEdge { get; }
Property Value
Type Description
Edge
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Coordinate

Declaration
public override Coordinate Coordinate { get; protected set; }
Property Value
Type Description
Coordinate
Overrides
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Coordinates

Declaration
public Coordinate[] Coordinates { get; }
Property Value
Type Description
Coordinate[]
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Depth

Declaration
public Depth Depth { get; }
Property Value
Type Description
Depth
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DepthDelta

The depthDelta is the change in depth as an edge is crossed from R to L.

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

The change in depth as the edge is crossed from R to L.
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EdgeIntersectionList

Declaration
public EdgeIntersectionList EdgeIntersectionList { get; }
Property Value
Type Description
EdgeIntersectionList
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Envelope

Declaration
public Envelope Envelope { get; }
Property Value
Type Description
Envelope
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IsClosed

Declaration
public bool IsClosed { get; }
Property Value
Type Description
bool
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IsCollapsed

An Edge is collapsed if it is an Area edge and it consists of two segments which are equal and opposite (eg a zero-width V).

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

true if edge is consisting of two segments which are equal and of oppose orientation (Zero-width V area edge)
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IsIsolated

Declaration
public override bool IsIsolated { get; }
Property Value
Type Description
bool
Overrides
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Isolated

Declaration
public bool Isolated { get; set; }
Property Value
Type Description
bool
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MaximumSegmentIndex

Declaration
public int MaximumSegmentIndex { get; }
Property Value
Type Description
int
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MonotoneChainEdge

Declaration
public MonotoneChainEdge MonotoneChainEdge { get; }
Property Value
Type Description
MonotoneChainEdge
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Name

Declaration
public string Name { get; set; }
Property Value
Type Description
string
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NumPoints

Declaration
public int NumPoints { get; }
Property Value
Type Description
int
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Points

Declaration
public Coordinate[] Points { get; set; }
Property Value
Type Description
Coordinate[]

Methods

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AddIntersection(LineIntersector, int, int, int)

Add an EdgeIntersection for intersection intIndex. An intersection that falls exactly on a vertex of the edge is normalized to use the higher of the two possible segmentIndexes.

Declaration
public void AddIntersection(LineIntersector li, int segmentIndex, int geomIndex, int intIndex)
Parameters
Type Name Description
LineIntersector li

A line intersector
int segmentIndex

A segment index
int geomIndex

A geometry index
int intIndex

The intersection index (0 or 1)
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AddIntersections(LineIntersector, int, int)

Adds EdgeIntersections for one or both intersections found for a segment of an edge to the edge intersection list.

Declaration
public void AddIntersections(LineIntersector li, int segmentIndex, int geomIndex)
Parameters
Type Name Description
LineIntersector li

A line intersector
int segmentIndex

A segment index
int geomIndex

A geometry index
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ComputeIM(IntersectionMatrix)

Update the IM with the contribution for this component. A component only contributes if it has a labelling for both parent geometries.

Declaration
public override void ComputeIM(IntersectionMatrix im)
Parameters
Type Name Description
IntersectionMatrix im
Overrides
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Equals(Edge)

Equals is defined to be: e1 equals e2 if the coordinates of e1 are the same or the reverse of the coordinates in e2.

Declaration
protected bool Equals(Edge e)
Parameters
Type Name Description
Edge e
Returns
Type Description
bool
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Equals(object)

Equals is defined to be: e1 equals e2 if the coordinates of e1 are the same or the reverse of the coordinates in e2.

Declaration
public override bool Equals(object o)
Parameters
Type Name Description
object o
Returns
Type Description
bool
Overrides
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GetCoordinate(int)

Declaration
public Coordinate GetCoordinate(int i)
Parameters
Type Name Description
int i
Returns
Type Description
Coordinate
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GetHashCode()

Declaration
public override int GetHashCode()
Returns
Type Description
int
Overrides
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IsPointwiseEqual(Edge)

Check if coordinate sequences of the Edges are identical.

Declaration
public bool IsPointwiseEqual(Edge e)
Parameters
Type Name Description
Edge e

The edge to test
Returns
Type Description
bool

true if the coordinate sequences of the Edges are identical.
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ToString()

Declaration
public override string ToString()
Returns
Type Description
string
Overrides
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UpdateIM(Label, IntersectionMatrix)

Updates an IM from the label for an edge. Handles edges from both L and A geometries.

Declaration
public static void UpdateIM(Label label, IntersectionMatrix im)
Parameters
Type Name Description
Label label

A label
IntersectionMatrix im

An intersection matrix
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Write(TextWriter)

Declaration
public void Write(TextWriter outstream)
Parameters
Type Name Description
TextWriter outstream
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WriteReverse(TextWriter)

Declaration
public void WriteReverse(TextWriter outstream)
Parameters
Type Name Description
TextWriter outstream

Operators

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operator ==(Edge, Edge)

Declaration
public static bool operator ==(Edge obj1, Edge obj2)
Parameters
Type Name Description
Edge obj1
Edge obj2
Returns
Type Description
bool
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operator !=(Edge, Edge)

Declaration
public static bool operator !=(Edge obj1, Edge obj2)
Parameters
Type Name Description
Edge obj1
Edge obj2
Returns
Type Description
bool