Curve2F.GetTangent Method

Curve2FGetTangent Method

Computes the tangent for a point on the curve.

Namespace: DigitalRune.Mathematics.Interpolation
Assembly: DigitalRune.Mathematics (in DigitalRune.Mathematics.dll) Version: 1.14.0.0 (1.14.0.14427)

Syntax

C++

Copy

public override Vector2F GetTangent(
	float parameter
)

Public Overrides Function GetTangent ( 
	parameter As Single
) As Vector2F

public:
virtual Vector2F GetTangent(
	float parameter
) override

abstract GetTangent : 
        parameter : float32 -> Vector2F 
override GetTangent : 
        parameter : float32 -> Vector2F

Parameters

parameter: Type: SystemSingle
The curve parameter.

Return Value

Type: Vector2F
The curve tangent. If the function is not differentiable at the given parameter, either the incoming or outgoing tangent is returned.

Implements

ICurveTParam, TPointGetTangent(TParam)

Remarks

The curve tangent can be used to compute the slope k of the function at the given parameter.

Copy

Vector2F tangent = curve.GetTangent(0.5f); // Get the tangent at x = 0.5.
float k = tangent.Y / tangent.X;           // Compute the slope at x = 0.5.

If the curve keys contain invalid tangents, the results are undefined.

Reference

Curve2F Class

DigitalRune.Mathematics.Interpolation Namespace