BezierInterpolant

A Bezier interpolant using cubic Bezier curves with 2D control points.

This interpolant supports the COLLADA/Maya style of Bezier animation where each keyframe has explicit in/out tangent control points specified as 2D coordinates (time, value).

The tangent data must be provided via the settings object:

• settings.inTangents: Float32Array with [time, value] pairs per keyframe per component
• settings.outTangents: Float32Array with [time, value] pairs per keyframe per component

For a track with N keyframes and stride S:

• Each tangent array has N * S * 2 values
• Layout: [k0_c0_time, k0_c0_value, k0_c1_time, k0_c1_value, ..., k0_cS_time, k0_cS_value, k1_c0_time, k1_c0_value, ...]