Good Day, I am looking to perform a Mouse hover on top of my Objects and Highlight them. But to perform that, If it was Unity, I would perform a Raycast from mouse position in Update loop and identify the objects. I am not able to find a similar code for Omniverse. It would help a lot if I can g…

We have had an engineer take a look at this and he has created some code for you to use. test.py (3.3 KB)

Hi Richard, Yeah I notice the query you mentioned is almost similar, But actually, I am trying to use Omniverse Composer and not Isaac Sim and am trying to use the Action graph’s Raycast node to implement the same though. I noticed the code has Isaac Sim related classes imported, Would it be possi…

OK let me see what I can find out. In the meantime, do you want to try that code and see if it works?

I spoke to the engineer that wrote that code, and he said it has nothing to do with Isaac Sim specifically. You should just be able to insert that code snippet, and it should work. So give that a go.

I was not able to run the script as it has dependencies on Isaac Sim. Attaching a screenshot of the error. Even if I remove the parts where the cube is spawned, I can’t see to make the script work. When I hover over a Cube I have in my scene, Nothing happens. Required : Action graph would be pre…

Ok let me go ask our Actionscript experts and see if they have example code.

Can you try this actionscript code please: from omni import ui from omni.kit.viewport.utility import get_active_viewport_and_window from omni.ui import scene as sc def on_clicked(sender: sc.Screen): def process_query(prim_path: str, world_position, *args): print(world_position) mou…

Hi Richard, I took the script shared in the other query (Isaac Sim related) and modified to serve my purpose. I am able to get the Outlining performed when hovered. But, The script only works from Script editor. When I try to run the script through the Python scripting component added to an xfor…

Hi @Richard3D , Can you please provide me with a Extension or Action graph for the above code I had shared before. Everytime, I load the USD, I have to open Script editor and manually run it once. I am good if there is a way to automate this for deployment and streaming. Awaiting your response, T…

We do not know sorry. The way you do this is with script editor. Or you can add it to a scripting node in ActionGraph. But not an xform. Just load this script on START. Pretty easy. You can even write an extension that loads this script. That is the best way.

Request for Raycast Python code / Action graph for Omniverse composer application

Omniverse Archive General Discussion

Richard3D May 6, 2025, 6:34pm 2

Strangely, is this related to this other recent post on the exact same subject? Are you both working together?
Isaac Sim mouse hover mesh highlight - Omniverse / Isaac Sim - NVIDIA Developer Forums

I will look into this.

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Request for Raycast Python code / Action graph for Omniverse composer application

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