QueryPointAndDistance3D(Segment,SegmentExtensionType,MapPoint,AsRatioOrLength,Double,Double) Method

In This Topic

Finds the point on the curve closest to inPoint, then copies that point to outPoint. The operation is performed in 3D space. Also calculates related items.

Syntax

C#
Visual Basic (Declaration)

MapPoint QueryPointAndDistance3D( 
   Segment segment,
   SegmentExtensionType extensionType,
   MapPoint inPoint,
   AsRatioOrLength asRatioOrLength,
   out double distanceAlongCurve,
   out double distanceFromCurve
)

Overloads Function QueryPointAndDistance3D( _
   ByVal segment As Segment, _
   ByVal extensionType As SegmentExtensionType, _
   ByVal inPoint As MapPoint, _
   ByVal asRatioOrLength As AsRatioOrLength, _
   ByRef distanceAlongCurve As Double, _
   ByRef distanceFromCurve As Double _
) As MapPoint

Parameters

segment: The segment on which to find the closest point. The segment may be extended.
extensionType: Describes if, how and where to extend segments.
inPoint: The input point.
asRatioOrLength: Determines whether the distanceAlongCurve is returned as a ratio of the curve length or as length from the start point.
distanceAlongCurve: Describes the distance from the start point of the segment to the input point, either as a ratio or length. If the input point is not on the segment, then the nearest location on the segment from the point is used.
distanceFromCurve: Describes how far the point is from the curve.

Return Value

MapPoint representing the closest point on the curve.

Exceptions

Exception	Description
System.ArgumentNullException	Either segment or inPoint or both are null or empty.
System.InvalidOperationException	segment is not Z-Aware.
ArcGIS.Core.Geometry.Exceptions.OperationException	Cannot do 3D operations on curve segments.
System.NotImplementedException	Spatial reference of segmentis an image coordinate system.

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.

Reference

IGeometryEngine Interface
IGeometryEngine Members
Overload List

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