Vec at a polar offset from center: center + (r·cos a, r·sin a). Each
input is a literal (new cell) or existing writable (passed through); for
read-only sources use Vec.derive. policy selects which inputs absorb
writes; lock one with Num.pin: polar(c, Num.pin(100), a).
Vec at a polar offset from
center:center + (r·cos a, r·sin a). Each input is a literal (new cell) or existing writable (passed through); for read-only sources useVec.derive.policyselects which inputs absorb writes; lock one withNum.pin:polar(c, Num.pin(100), a).