Class Spline

A wrapper on top of to handle zero-key curves and keyframe loops.

Inheritance
Object
Spline
Namespace: UnityEngine.Rendering.PostProcessing
Syntax
[Serializable]
public sealed class Spline

Constructors

Spline(AnimationCurve, Single, Boolean, Vector2)

Creates a new spline.

Declaration
public Spline(AnimationCurve curve, float zeroValue, bool loop, Vector2 bounds)
Parameters
Type Name Description
AnimationCurve curve

The animation curve to base this spline off
Single zeroValue

The value to return when the curve has no keyframe
Boolean loop

Should this curve loop?
Vector2 bounds

The curve bounds

Fields

cachedData

An array holding pre-computed curve values.

Declaration
public float[] cachedData
Field Value
Type Description
Single[]

curve

The underlying animation curve instance.

Declaration
public AnimationCurve curve
Field Value
Type Description
AnimationCurve

k_Precision

Precision of the curve.

Declaration
public const int k_Precision = 128
Field Value
Type Description
Int32

k_Step

The inverse of the precision of the curve.

Declaration
public const float k_Step = 0.0078125F
Field Value
Type Description
Single

Methods

Cache(Int32)

Caches the curve data at a given frame. The curve data will only be cached once per frame.

Declaration
public void Cache(int frame)
Parameters
Type Name Description
Int32 frame

A frame number

Evaluate(Single)

Evaluates the curve at a point in time.

Declaration
public float Evaluate(float t)
Parameters
Type Name Description
Single t

The time to evaluate
Returns
Type Description
Single

The value of the curve at time t
Remarks

Calling the length getter on a curve is expensive to it's better to cache its length and call Evaluate(Single, Int32) instead of getting the length for every call.

Evaluate(Single, Int32)

Evaluates the curve at a point in time.

Declaration
public float Evaluate(float t, int length)
Parameters
Type Name Description
Single t

The time to evaluate
Int32 length

The number of keyframes in the curve
Returns
Type Description
Single

The value of the curve at time t

GetHashCode()

Returns the computed hash code for this parameter.

Declaration
public override int GetHashCode()
Returns
Type Description
Int32

A computed hash code
Overrides