ArcGIS Pro 3.1 API Reference Guide
ArcGIS.Core.Geometry Namespace / GeometryEngine Class / QueryPointAndDistance3D Method / QueryPointAndDistance3D(Segment,SegmentExtensionType,MapPoint,AsRatioOrLength,Double,Double) Method
The segment on which to find the closest point. The segment may be extended.
Describes if, how and where to extend segments.
The input point.
Determines whether the distanceAlongCurve is returned as a ratio of the curve length or as length from the start point.
Describes how far along the closest point is along the curve, either as a ratio or length.
Describes how far the point is from the curve.

In This Topic
    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

    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 how far along the closest point is along the curve, either as a ratio or length.
    distanceFromCurve
    Describes how far the point is from the curve.

    Return Value

    MapPoint representing the closest point on the curve.
    Exceptions
    ExceptionDescription
    Either segment or inPoint or both are null or empty.
    segment is not Z-Aware.
    Cannot do 3D operations on curve segments.
    Spatial reference of segmentis an image coordinate system.
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3.0 or higher.
    See Also