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 _
)

[C#]
public void QueryNormal (
    esriSegmentExtension extension,
    double DistanceAlongCurve,
    bool asRatio,
    double Length,
    ILine normal
);

[C++]
HRESULT QueryNormal(
  esriSegmentExtension extension,
  double DistanceAlongCurve,
  VARIANT_BOOL asRatio,
  double Length,
  ILine* normal
);

[C++]
Parameters
extension 

  extension is a parameter of type esriSegmentExtension
DistanceAlongCurve 

  DistanceAlongCurve is a parameter of type double
asRatio 

  asRatio is a parameter of type bool
Length 

  Length is a parameter of type double
normal 

  normal is a parameter of type ILine*

Product Availability

Description

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.

Remarks

See Also

ICurve Interface | ILine Interface