Interpolant

Base class for all interpolant types.

This is the base class for all interpolation methods used in keyframe tracks. Each interpolant type provides a different method for calculating values between keyframes.

Methods

Interpolant(const vector<f32>& parameterPositions, const vector<f32>& sampleValues, u32 sampleSize, vector<f32>* resultBuffer)

Constructor for base interpolant

parameterPositions	Array of parameter positions (times)
sampleValues	Array of sample values
sampleSize	Size of each sample
resultBuffer	Optional result buffer	nullptr

virtual f32 evaluate(f32 t) const

Evaluates the interpolant at parameter t

t

Parameter value to evaluate

void copySampleValue(u32 index) const

Copies a sample value to the result buffer

index

Index of the sample to copy

void copySampleValue(u32 index, f32 weight) const

Copies a weighted sample value to the result buffer

index	Index of the sample to copy
weight	Weight factor

u32 getSettings_lhs(f32 t, u32 pos, f32& t0, f32& t1) const

Gets settings for left-hand side interpolation

t	Parameter value
pos	Position index
t0	First time value
t1	Second time value

u32 getSettings_rhs(f32 t, u32 pos, f32& t0, f32& t1) const

Gets settings for right-hand side interpolation

t	Parameter value
pos	Position index
t0	First time value
t1	Second time value

Properties

parameterPositions	vector	Array of parameter positions
sampleValues	vector	Array of sample values
sampleSize	u32	Size of each sample
resultBuffer	vector *	Result buffer
resultBufferInternal	vector	Internal result buffer