Question #658232 on Yade changed:
https://answers.launchpad.net/yade/+question/658232
Status: Open => Answered
Bruno Chareyre proposed the following answer:
Hello Gary,
At the bottom level of the triangulation code there is CGAL library. On the top
of CGAL, Yade has mainly C++ function to glue the particles positions of DEM
together with CGAL's triangulation (besides calculating derived quantities such
as deformations). And finally some python binding on the top of the C++ glue
for some user-level functions.
What is needed in you case, it seems, is to access the CGAL data structure
directly to work efficiently. It is not anticipated in yade that someone needs
full access to CGAL data since it would involve developing our own python
wrapping for the whole triangulation package of CGAL, not a small task.
The solution to your problem could be to add a few additional python wrappers
to TesselationWrapper in order to access just what you need (not so clearly
defined in your question). Implementation of these needs a good understanding
of CGAL internals and c++/python binding.
Actually it could be that what you need is already accessible somehow but you
did not notice. The list of spheres adjacent to external boundaries, for
instance, can be retrieved.
So, let us know more precisely what data is needed for better advices.
Cheers
Bruno
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