RhinoCommon SDK
Rhino.Geometry
Curve Class
Curve Methods
ChangeClosedCurveSeam Method
ChangeDimension Method
ClosedCurveOrientation Method
ClosestPoint Method
ClosestPoints Method
Contains Method
CreateBlendCurve Method
CreateBooleanDifference Method
CreateBooleanIntersection Method
CreateBooleanUnion Method
CreateControlPointCurve Method
CreateFillet Method
CreateFilletCurves Method
CreateInterpolatedCurve Method
CreateMeanCurve Method
CreateTweenCurves Method
CreateTweenCurvesWithMatching Method
CreateTweenCurvesWithSampling Method
CurvatureAt Method
DerivativeAt Method
Dispose Method
DivideAsContour Method
DivideByCount Method
DivideByLength Method
DivideEquidistant Method
DoDirectionsMatch Method
Duplicate Method
DuplicateCurve Method
DuplicateSegments Method
Extend Method
ExtendByArc Method
ExtendByLine Method
ExtendOnSurface Method
Fair Method
Fit Method
FrameAt Method
GetCurveParameterFromNurbsFormParameter Method
GetDistancesBetweenCurves Method
GetFilletPoints Method
GetLength Method
GetNextDiscontinuity Method
GetNurbsFormParameterFromCurveParameter Method
GetPerpendicularFrames Method
HasNurbsForm Method
IsArc Method
IsCircle Method
IsClosable Method
IsContinuous Method
IsEllipse Method
IsInPlane Method
IsLinear Method
IsPlanar Method
IsPolyline Method
IsShort Method
JoinCurves Method
LengthParameter Method
MakeClosed Method
MakeEndsMeet Method
NonConstOperation Method
NormalizedLengthParameter Method
NormalizedLengthParameters Method
Offset Method
OffsetNormalToSurface Method
OffsetOnSurface Method
PerpendicularFrameAt Method
PlanarClosedCurveRelationship Method
PlanarCurveCollision Method
PointAt Method
PointAtLength Method
PointAtNormalizedLength Method
ProjectToBrep Method
ProjectToMesh Method
ProjectToPlane Method
PullToBrepFace Method
PullToMesh Method
Rebuild Method
RemoveShortSegments Method
Reverse Method
SetEndPoint Method
SetStartPoint Method
Simplify Method
SimplifyEnd Method
SpanDomain Method
Split Method
TangentAt Method
ToNurbsCurve Method
ToPolyline Method
Trim Method
TryGetArc Method
TryGetCircle Method
TryGetEllipse Method
TryGetPlane Method
TryGetPolyline Method
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CurveTangentAt Method
Rhino for Mac 5.1
Evaluates the unit tangent vector at a curve parameter.

Namespace: Rhino.Geometry
Assembly: RhinoCommon (in RhinoCommon.dll) Version: 5.1.50000.0 (5.0.20693.0)
Syntax
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public Vector3d TangentAt(
	double t
)

Parameters

t
Type: SystemDouble
Evaluation parameter.

Return Value

Type: Vector3d
Unit tangent vector of the curve at the parameter t.
Remarks
No error handling.
See Also