Hello everyone,
I am working on a geometric optimization problem where the geometries are generated using Grasshopper. I am currently trying to automate the geometry creation process by modifying parameter values in Grasshopper through a Python script. I have identified two approaches, but I am facing issues and would appreciate any guidance.
Approach 1: Running a Python Script Within Rhino
My first approach involves opening a Rhino file with a normal python script and then executing a Python script inside Rhino. This second script is intended to:
- Open a Grasshopper file linked to the Rhino model openned (.3dm)
- Modify variable values within the Grasshopper file using the
-grasshopperplayercommand. The values for these variables are read from a JSON or CSV file generated in parallel. - Execute Rhino commands that may or may not be linked to Grasshopper.
Issue with Approach 1
After opening the Grasshopper file using the Python script executed in Rhino, I am unable to run further Rhino commands because the command bar becomes “blocked”. Specifically, I encounter the following situation at the end of my Python script runned in Rhino :
It seems that once the script is executed, Rhino command bar gets stuck and does not allow further commands.
Approach 2: Using Hops
I also considered using the Hops plugin to establish a connection between my external Python program and Grasshopper. However, I have found limited documentation on how to achieve this for my specific use case. As I was trying to execute Python code in Rhino using the package ghhops_server I encontered several errors regarding the import of this package. Do you have any insights on this ?
Would anyone have insights on how to properly manage these issues? Any guidance on using Hops effectively or unblocking Rhino’s command bar after running a script would be greatly appreciated. Feel free to recommand any other method
Thanks in advance for your help!
Best regards,
Etienne