yade-dev team mailing list archive

[Václav Šmilauer <eudoxos@xxxxxxxx>]

> However, it seems that, doing so, I can only manage 1 DOF as
> blockedDOFs is a bitmask which can be chosen between these values:
Well, read http://en.wikipedia.org/wiki/Bitmask and
http://en.wikipedia.org/wiki/Bitwise_operation. Precisely because it is
a bitmask, you have to set bits that correspond to RX, RY, RZ if you
need to block just those, i.e. (8 & 16 & 32), which is binary 0b111000
(in python) and that is decimal 56.

In yade moreover, try writing State.blockedDOFs? and enter, which will
give you 
https://www.yade-dem.org/sphinx/yade.wrapper.html#yade.wrapper.State.blockedDOFs
and that reveals a simpler way that I put back then just for people that
don't want to know what bitmask is, and that lest you say

state.blockedDOFs=['rx','ry','rz]

as well, which is the same as

state.blockedDOFs=56

which is the same as

state.blockedDOFs=(8 & 16 & 32)

which is the same as

state.blockedDOFs=0b111000

Prefer the 'rx','ry','rz' way, though, since those numbers are
implementation detail and would break your code if that changed. It
makes also the code more readable, obviously.

Cheers, Vaclav