Hosting FEA tool on Compute

[Marco-Pellegrino]

Hello.

I am trying to explore the use of a web app to solve some simple FEA Grasshopper model but I am having some issue.
The tool required to run an external application (I do it with subprocess) from which we can read an output file.
Is it possible?
I am getting this error message but I am not able to get any tip.

[sbaer]

What does you python script look like?

[Marco-Pellegrino]

Hi Steve!

Thanks for jumping in.

I am posting here the Grasshopper script in case you want to have a better look and try your self.
I am going to do a bit of debugging my self deleleting some component until I do understand where the issue is happening.

It requires to download Alpaca4d tool (which I have attached to this thread). Remember to unblock the file and to install the tool inside a Folder called "Alpaca4d".

I have tried to summarise what the tool is trying to do in the picture below.
I hope it makes sense.

FabianEidnerVase.zip

Alpaca4d.zip

[Marco-Pellegrino]

The error seems to happen in the "assemble" component.
The latest output that I can get without any error is when I remove that part.

You can look inside the code of the assemble if you want.

I have converted the output of the other component to a string and convert in mesh to visualise that the others component return an output.

[Marco-Pellegrino]

Hi @sbaer @pearswj
Sorry if I am going to make a silly question but I am trying to understand why the script is failing.

Is rhino.compute able to use ALL the rhinoCommon function?

for example:

Can I use "import ghpythonlib.components as ghcomp"?
Can I use Rhino.Geometry.RTree ?

[sbaer]

You can use most of RhinoCommon and ghpythonlib. The area you should stay away from are RhinoDoc and it's views. There is typically no RhinoDoc when running headless

[Marco-Pellegrino]

thanks @sbaer !!!
The RhinoDoc makes me wonder where it could be the issue and it is finally working!!!!!

The issue was in rhinoscriptsintax. I was using rs.DocumentPath() to find the working folder but I have solved it using os.getcwd()

I am so glad we have managed to solve it! We can finally run some FEA on the web.