arielclarkex

arielclarkex

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Recent Forum Posts

Any way to retrieve COP node image data via Python? Feb. 12, 2025, 9:14 a.m.

I've been looking for a way to retrieve COP (Copernicus) nodes in image data form with Python, while this was possible with the old cops, the current Cops API doesn't seem to natively support a way to fetch the new Cops (Copernicus) nodes as image data. Seems to only work with legacy Cops only.

Any workarounds to this?

Ideal approach to writing Copernicus textures? Feb. 9, 2025, 3:21 a.m.

So basically, I make a ROP Image Output for each texture and assign it in a Copernicus network, then in the script option for the ROP nodes I use the Post-Write Script option with a one liner python code of 
hou.node("../rop_image2").parm('execute').pressButton()
to trigger the next ROP Image Output in sequence. Is this approach the intended way to go about this practically? I know it works and gets the job done, it's just that I am wondering If I'm just reinventing the wheel here and that there could've been a more quicker setup to go about this that I wasn't aware of.

Alternatively I use the following code when theres more than 2 rop's to output:

for node in hou.node("/img/copnet1").children():
    if node.name().startswith("rop_image") and node.name() != "rop_image1":
        node.parm('execute').pressButton()




Any advice is appreciated.

How to achieve Touchdesigners Feedback Loop within COPS 2.0? Feb. 5, 2025, 1:38 a.m.

Hey everyone,

I'm coming from a TouchDesigner background and have been trying to figure out how to replicate a feedback loop in Houdini's Copernicus (Cops 2.0). In TouchDesigner, feedback loops are super easy since they work like a recursive buffer, allowing almost endless iterations without any issues. (Not sure if I properly explained that, but that's the gist)

Touchdesigner's implementation of Feedback loops:



I've started experimenting with the Invoke and Block nodes in Houdini, but I'm not sure if that's the best route because it seems to get really resource-heavy as I increase the iterations. My goal is to create really complex, evolving patterns to use as a base for my materials.

Any ideas or suggestions would be greatly appreciated! Preferably via nodes, code scares me sometimes.

Thanks a lot!
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