ArcGIS Enterprise SDK
ICurve.QueryNormal Method
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ICurve.QueryNormal Method

Constructs a line normal to a curve from a point at a specified distance along the curve.

[Visual Basic .NET]
Public Sub QueryNormal ( _
    ByVal extension As esriSegmentExtension, _
    ByVal DistanceAlongCurve As Double, _
    ByVal asRatio As Boolean, _
    ByVal Length As Double, _
    ByVal normal As ILine _
public void QueryNormal (
    esriSegmentExtension extension,
    double DistanceAlongCurve,
    bool asRatio,
    double Length,
    ILine normal


Given a distance along the curve specified either as a ratio of the Length or as a specific fixed distance, QueryNormal returns the Line normal to the Point.  The length and method of tangential extension of the normal line are given by the user.  The method of tangential extension determines the direction of the normal line as though it were being extended at a From point or a To point.



QueryNormal Example

See Also

ICurve Interface