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[Jan Stránský <question403684@xxxxxxxxxxxxxxxxxxxxx>]

Question #403684 on Yade changed:
https://answers.launchpad.net/yade/+question/403684

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Ákos,

for single body, you have to multiply the vertex by orientation and add
position. It is then easy to do it in a loop.
##################
b = somePolyhedron
pos = b.state.pos
ori = b.state.ori
for vLocal in b.shape.v:
   vGlobal = pos + ori*vLocal
###################

cheers
Jan


2016-10-31 21:33 GMT+01:00 Ákos Orosz <question403684@xxxxxxxxxxxxxxxxxxxxx>
:

> New question #403684 on Yade:
> https://answers.launchpad.net/yade/+question/403684
>
> Hi all,
>
> I’m trying to create an oedometric test (yadedaily (2016.06a)), similar to
> the tutorial [1] with polyhedral particles. After gravitational deposition,
> to put the top plate exactly on the top of the pile, I have to access to
> the global coordinates of all vertices of polyhedral particles (and then
> find the highest). For this, I used:
>
> ver=[i.shape.v for i in O.bodies if isinstance(i.shape,Polyhedra)]
>
> It seems, it returns with local coordinates, instead of globals (as stated
> in the docs [2]). Can you help, how to get the global ones?
>
> Thanks in advance,
> Ákos
>
> [1] https://yade-dem.org/doc/tutorial-examples.html#oedometric-test
> [2] https://yade-dem.org/doc/yade.wrapper.html?highlight=v#yade.
> wrapper.Polyhedra.v
>
>
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