Writable radial distance from pivot to points[0]; write scales every
input radially about pivot (negative target reflects). The complement
carries per-point offsets from the pivot, so a collapse onto it (radius
≈ 0) reinflates from the stored shape. Pose theta survives.
Writable radial distance from pivot to
points[0]; write scales every input radially aboutpivot(negative target reflects). The complement carries per-point offsets from the pivot, so a collapse onto it (radius ≈ 0) reinflates from the stored shape. Posethetasurvives.