UT3Tangent.stack_tangents

static t3toolbox.uniform_manifold.UT3Tangent.stack_tangents(tree)

def stack_tangents(tree) -> 'UT3Tangent':

Stack a K-shaped tree of tangents (sharing one frame) into a tangent-stacked UT3Tangent.

Inverse of unstack_tangents(). Requires every leaf to be at the same frame (the numerical same-frame check, as in __add__()): the tangents being stacked must live in the same tangent space. The first leaf’s frame is reused; the variations stack over the new outer tangent stack K.

Return type:

UT3Tangent