Hello Chrono,
I've ran into the problem that it seems impossible to extract ChNodeFEAxyz
positions from pychrono.
The obvious thing would be:
```
for ch_node in ch_mesh.GetNodes():
position = ch_node_xyz.GetPos()
```
But GetNodes returns ChNodeFEA*base* which does not contain xyz position.
I've tried typecasting, like this: ```
for ch_node in ch_mesh.GetNodes():
ch_node_xyz: fea.ChNodeFEAxyz = fea.CastToChNodeFEAxyz(
ch_node)
# ch_node = ch_mesh.GetNode(ch_node.GetIndex()) #and
something like this, hoping that it would return ChNodeFEAxyz
position = ch_node_xyz.GetPos()
``` But the `ch_node_xyz.x`, `.y`, `.z` returns `nan`.
So, what can we do get positions of each node?
My usecase: given known AABB positions, find ones which a specific mesh
intersects. I believe it's possible to do through creating a separate
CollisionSystem instance and attempting to run it separately (I don't know
if it's possible), but then AABBs intersect that too.
Is it possible to solve this in PyChrono? Examples only export positions
for visualization and that's not what I need.
Thank you,
Maksym
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