Every parent cycle — a body that is its own parent, or a chain that
loops back on itself (A → B → A). Such a chain has no root to position
from: resolution used to recurse until the stack overflowed and took the
whole scene down; it now stops at the repeat and anchors at the origin
(see hierarchy.ts), and this reports why. Each cycle is reported once,
however many of its members (or bodies hanging off it) are walked.
Every parent cycle — a body that is its own parent, or a chain that loops back on itself (A → B → A). Such a chain has no root to position from: resolution used to recurse until the stack overflowed and took the whole scene down; it now stops at the repeat and anchors at the origin (see hierarchy.ts), and this reports why. Each cycle is reported once, however many of its members (or bodies hanging off it) are walked.