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Heightfield import file from COPS?

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vinyvince
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Trying to do a Heightfielf stamp "deformer" (on curve with other controls), and whiel i was trying to avoid a slow road, my 2d approach looks is perturbed at last checkpoint as i can't find a way to make the houdini heightfield file read my COP input...

Has someone ever succeeded in that?
Obviously i use the "Op:" like this "op:/obj/Path_Deform/texture/OUT"

cheers, ahppy new year to all of you!
Edited by vinyvince - Jan. 6, 2023 05:44:18
Vincent Thomas   (VFX and Art since 1998)
Senior Env and Lighting  artist & Houdini generalist & Creative Concepts
http://fr.linkedin.com/in/vincentthomas [fr.linkedin.com]
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vinyvince
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I found a way by bypassing the COP and uvsample with VEX which is faster, but im still interested to know in case someone has an answer

Vincent*
Vincent Thomas   (VFX and Art since 1998)
Senior Env and Lighting  artist & Houdini generalist & Creative Concepts
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tamte
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vinyvince
i can't find a way to make the houdini heightfield file read my COP input...
set Source to COP
then just use path tho your cop node in the COP Network parm
Tomas Slancik
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Method Studios, NY
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vinyvince
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Oh god, it was so super easy, thanks Tomas, sorry i totally missed that menu!

Thanks and all my best wishes for 2023 to you Tomas!
Vincent Thomas   (VFX and Art since 1998)
Senior Env and Lighting  artist & Houdini generalist & Creative Concepts
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vinyvince
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It's interesting to note that when VEX uvsample without Cop i get the left result, but with other volume method and xyzdist') (with COP) , the right one, which is sharper but this border artefact. Both heightfields have the same voxel numbers, and same "input"...

Edit: Yeah, no i found out after. Sidefx primitive volume could force different behavior for border interpolation...
Edited by vinyvince - Sept. 10, 2024 11:42:53

Attachments:
Capture.PNG (2.5 MB)

Vincent Thomas   (VFX and Art since 1998)
Senior Env and Lighting  artist & Houdini generalist & Creative Concepts
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tamte
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it's hard to tell whats causing the difference without seeing the file as I don't know what 2 techniques you are comparing
Tomas Slancik
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Method Studios, NY
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nmdaas
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I'm having a similar issue where I'm trying to use a COP output to the height field file. This is the setup I currently have but I keep getting the error: "Invalid source ./terrain_layer1/foreach_end2.
(Error: Failure to cook template geometry.)"

Any idea what I'm doing wrong?

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Screen Shot 2024-09-09 at 4.33.42 PM.png (406.6 KB)

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vinyvince
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I usually don't use workflow like this, but i just tried and it is working for me .

You might want to clamp the mask before now. Concerning the error , difficult to tell without seeing your cop, is it the old cop network or the new one?

Even if the resolution of the 2 heighfields does not match, it should be ok..

Attachments:
SOP_copy.cpio (170.8 KB)

Vincent Thomas   (VFX and Art since 1998)
Senior Env and Lighting  artist & Houdini generalist & Creative Concepts
http://fr.linkedin.com/in/vincentthomas [fr.linkedin.com]
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