GetSubCurveBetweenMsEx Method (IGeometryEngine)

In This Topic

Gets a polyline and other details corresponding to the subcurve(s) between the specified M-values.

Syntax

C#
Visual Basic (Declaration)

Polyline GetSubCurveBetweenMsEx( 
   Multipart multipart,
   double fromM,
   double toM,
   out MSubCurveRelation fromMDetail,
   out MSubCurveRelation toMDetail
)

Function GetSubCurveBetweenMsEx( _
   ByVal multipart As Multipart, _
   ByVal fromM As Double, _
   ByVal toM As Double, _
   ByRef fromMDetail As MSubCurveRelation, _
   ByRef toMDetail As MSubCurveRelation _
) As Polyline

Parameters

multipart: The multipart from which the subcurve will be extracted.
fromM: The M-value in the multipart to start the subcurve.
toM: The M-value in the multipart to end the subcurve.
fromMDetail: Information about where fromM falls relative to the input multipart.
toMDetail: Information about where toM falls relative to the input multipart.

Return Value

Polyline representing the subcurve.

Exceptions

Exception	Description
System.ArgumentNullException	The input multipart is null.
System.InvalidOperationException	The input multipart is not M-Aware.
System.NotImplementedException	Spatial reference of the input multipart is an image coordinate system.

Example

Get a polyline and other details corresponding to the subcurves between the specified M-values GetSubCurveBetweenMsEx

string json = "{\"hasM\":true,\"paths\":[[[-2000,0,1],[-1000,1000,-1],[-1000,0,3],[1000,1000,4],[2000,1000,5],[2000,2000,6],[3000,2000,7],[4000,0,8]]],\"spatialReference\":{\"wkid\":3857}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);

// Get the subcurve between M-values 2 and 6
MSubCurveRelation fromDetail, toDetail;
Polyline subCurve = GeometryEngine.Instance.GetSubCurveBetweenMsEx(polyline, 2, 6, out fromDetail, out toDetail);
// The subcurve has one part and five points. The subcurve points are (x, y, m):
// (-1000, 250, 2), (-1000, 0, 3), (1000, 1000, 4), (2000, 1000, 5), (2000, 2000, 6)
// fromDetail = toDetail = MSubCurveRelation.MBetweenMinMax

// Get the subcurve between M-values -2 and 3.5
subCurve = GeometryEngine.Instance.GetSubCurveBetweenMsEx(polyline, -2, 3.5, out fromDetail, out toDetail);
// The subcurve has two parts and five points.
// The subcurve points in part 0 are (x, y, m): (-1000, 1000, -1), (-2000, 0, 1)
// The subcurve points in part 1 are (x, y, m): (-1000, 1000, -1), (-1000, 0, 3), (0, 500, 3.5)
// fromDetail = MSubCurveRelation.MBelowMin, toDetail = MSubCurveRelation.MBetweenMinMax

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.3 or higher.

Reference

IGeometryEngine Interface
IGeometryEngine Members

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