Class SimpleSnapRounder

Uses Snap Rounding to compute a rounded, fully noded arrangement from a set of ISegmentStrings.

Implements the Snap Rounding technique described in the papers by Hobby, Guibas & Marimont, and Goodrich et al. Snap Rounding enforces that all vertices lie on a uniform grid, which is determined by the provided PrecisionModel. Input vertices do not have to be rounded to this grid; this will be done during the snap-rounding process.

This implementation uses simple iteration over the line segments. This is not an efficient approach for large sets of segments. This implementation appears to be fully robust using an integer precision model. It will function with non-integer precision models, but the results are not 100% guaranteed to be correctly noded.

Inheritance

Object

SimpleSnapRounder

Implements

INoder

Inherited Members

Object.Equals(Object)

Object.Equals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ReferenceEquals(Object, Object)

Object.ToString()

Namespace: NetTopologySuite.Noding.Snapround

Assembly: NetTopologySuite.dll

Syntax

[Obsolete("Use SnapRoundingNoder instead")]
public class SimpleSnapRounder : INoder

Constructors

SimpleSnapRounder(PrecisionModel)

Initializes a new instance of the SimpleSnapRounder class.

Declaration

public SimpleSnapRounder(PrecisionModel pm)

Parameters

Type	Name	Description
PrecisionModel	pm	The PrecisionModel to use.

Methods

ComputeNodes(IList<ISegmentString>)

Computes the noding for a collection of ISegmentStrings. Some Noders may add all these nodes to the input ISegmentStrings; others may only add some or none at all.

Declaration

public void ComputeNodes(IList<ISegmentString> inputSegmentStrings)

Parameters

Type	Name	Description
IList<ISegmentString>	inputSegmentStrings	A collection of NodedSegmentStrings

ComputeVertexSnaps(IList<ISegmentString>)

Computes nodes introduced as a result of snapping segments to vertices of other segments.

Declaration

[Obsolete("This method is no longer supported in the latest version of NetTopologySuite and may cause unexpected behavior.  Strongly favor using MCIndexPointSnapper instead.")]
public void ComputeVertexSnaps(IList<ISegmentString> edges)

Parameters

Type	Name	Description
IList<ISegmentString>	edges	The list of segment strings to snap together

GetNodedSubstrings()

Returns a IList of fully noded ISegmentStrings. The ISegmentStrings have the same context as their parent.

Declaration

public IList<ISegmentString> GetNodedSubstrings()

Returns

Type	Description
IList<ISegmentString>	A Collection of NodedSegmentStrings representing the substrings

Implements

INoder