Layers an additive pose on top of a base: out = base + weight·(add − ref),
the operation behind aim-offset / lean layers. The additive contribution is
measured relative to a reference pose ref (usually the additive clip's
neutral frame): rotation is the delta add·ref⁻¹ applied multiplicatively and
scaled by weight; translation is the linear offset; scale is multiplicative.
out may alias base.
Layers an additive pose on top of a base:
out = base + weight·(add − ref), the operation behind aim-offset / lean layers. The additive contribution is measured relative to a reference poseref(usually the additive clip's neutral frame): rotation is the deltaadd·ref⁻¹applied multiplicatively and scaled byweight; translation is the linear offset; scale is multiplicative.outmay aliasbase.