T3Variations.stack_shape

t3toolbox.frame_variations_format.T3Variations.stack_shape()

def stack_shape(self) -> typ.Tuple[int,...]:   # full leading stack K + C (split-agnostic on its own)

The full leading stack K + C shared by every variation core.

T3Variations is split-agnostic: the tangent-stack K vs frame-stack C split is fixed only when paired with a T3Frame (check_fv_pair requires C to be the trailing/inner part of this stack; T3Tangent then exposes the two parts). See docs/batching_and_stacking.md.

Return type:

t3toolbox.backend.common.typ.Tuple[int, Ellipsis]