This is pure math — does not mutate the model. The result can be passed directly to Draw3D.drawSkinnedMesh for GPU skinning. The algorithm matches raylib's UpdateModelAnimation: interpolates keyframes (lerp), builds TRS matrices (already merged into keyframes), and multiplies by the inverse bind pose. NOTE: this is the legacy single-frame path with NO parent-chain composition — channelless bones fall back to their raw inverse-bind (lines below), which is correct only for clips that animate every bone in isolation. The animated-model draw path uses computeBonePalette instead (which composes parents AND falls back to the bind local pose), so this path is retained for API completeness but is not exercised by the forward pipeline.

clip : Animation3DClip

frame : float32

mesh : AnimatedMesh

Returns: Matrix[]

Reads bone names and inverse-bind (offset) matrices from the first mesh that has bones. Returns ValueNone if no mesh has bones.

scene : Scene

Returns: AnimatedMesh voption