b = rblock.moi.fix(rb)
rblock.moi.fix(rb) = b

Get/set the moment of inertia fixity state. When activated, the rigid block moment of inertia will not be automatically updated when a rigid block is scaled, the volume is changed, or when the density is changed. This is activated automatically when either the volume or moment of inertia is set manually via the rblock attribute command or via the FISH intrinsics rblock.vol, rblock.moi.real, or rblock.moi.prin.real.

Returns:b - moment of inertia fixity state
Accepts:b - moment of inertia fixity state
Arguments:rb - rigid block pointer