Write pie-slice properties for every node with 2+ types whose colors are known. Mutates and returns the given UGM (the workbench projections are fresh per memo, so in-place is safe and cheap).
Write pie-slice properties for every node with 2+ types whose colors are known. Mutates and returns the given UGM (the workbench projections are fresh per memo, so in-place is safe and cheap).