Access to the global coordinates of polyhedra vertices

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 <email address hidden>
:

> 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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