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[Jérôme Duriez <question679422@xxxxxxxxxxxxxxxxxxxxx>]

Question #679422 on Yade changed:
https://answers.launchpad.net/yade/+question/679422

    Status: Open => Answered

Jérôme Duriez proposed the following answer:
Hi,

Let's start with an example:

O.bodies.append(box((1,1,1),(4,2,1))) # a box wider along x-axis than along y-axis
quat = Quaternion((0,0,1),pi/3.) # a rotation by pi/3 around z axis
O.bodies[0].state.ori =  quat * O.bodies[0].state.ori # we rotate the box : look at the qt.View() (the graphical interface), the box is now wider along y-axis for instance

Then, your intention should be fulfilled by testing N cases with N
different "quat", that you have to choose to sufficiently cover all
possible orientations.

Note the above code can be condensed into
"O.bodies.append(box((1,1,1),(4,2,1),Quaternion((0,0,1),pi/3.)))"

Maybe it would help to precise what kind of YADE shape you'll use in
your YADE simulations of irregular particles.

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