Class MaximalEdgeRing

A ring of edges which may contain nodes of degree > 2. A MaximalEdgeRing may represent two different spatial entities: a single polygon possibly containing inversions (if the ring is oriented CW) a single hole possibly containing exversions (if the ring is oriented CCW) If the MaximalEdgeRing represents a polygon, the interior of the polygon is strongly connected. These are the form of rings used to define polygons under some spatial data models. However, under the OGC SFS model, MinimalEdgeRings are required. A MaximalEdgeRing can be converted to a list of MinimalEdgeRings using the BuildMinimalRings() method.

Inheritance
object
EdgeRing
MaximalEdgeRing
Inherited Members
Namespace: NetTopologySuite.Operation.Overlay
Assembly: NetTopologySuite.dll
Syntax
public class MaximalEdgeRing : EdgeRing

Constructors

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MaximalEdgeRing(DirectedEdge, GeometryFactory)

Declaration
public MaximalEdgeRing(DirectedEdge start, GeometryFactory geometryFactory)
Parameters
Type Name Description
DirectedEdge start
GeometryFactory geometryFactory

Methods

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BuildMinimalRings()

Declaration
public IList<EdgeRing> BuildMinimalRings()
Returns
Type Description
IList<EdgeRing>
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GetNext(DirectedEdge)

Declaration
public override DirectedEdge GetNext(DirectedEdge de)
Parameters
Type Name Description
DirectedEdge de
Returns
Type Description
DirectedEdge
Overrides
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LinkDirectedEdgesForMinimalEdgeRings()

For all nodes in this EdgeRing, link the DirectedEdges at the node to form minimalEdgeRings

Declaration
public void LinkDirectedEdgesForMinimalEdgeRings()
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SetEdgeRing(DirectedEdge, EdgeRing)

Declaration
public override void SetEdgeRing(DirectedEdge de, EdgeRing er)
Parameters
Type Name Description
DirectedEdge de
EdgeRing er
Overrides