Forums Technical Discussion How to sample SDF from VDB from top view?

How to sample SDF from VDB from top view?

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yok17376596650
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I created a VDB field in Houdini. Now I want to sample the SDF information in this VDB field from the top view and output it into a texture. How can I do this?
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Konstantin Magnus
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There is a "volume slice"-node that can be set to method > volume. Inside COPs you can import the slice using the "SOP import"-node.

https://procegen.konstantinmagnus.de/volume-slices-in-cops [procegen.konstantinmagnus.de]
Edited by Konstantin Magnus - Oct. 28, 2023 12:19:40
https://procegen.konstantinmagnus.de/ [procegen.konstantinmagnus.de]
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yok17376596650
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Konstantin Magnus
There is a "volume slice"-node that can be set to method > volume. Inside COPs you can import the slice using the "SOP import"-node.

https://procegen.konstantinmagnus.de/volume-slices-in-cops [procegen.konstantinmagnus.de]
Thank you, this really helped me a lot
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yok17376596650
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Konstantin Magnus
There is a "volume slice"-node that can be set to method > volume. Inside COPs you can import the slice using the "SOP import"-node.

https://procegen.konstantinmagnus.de/volume-slices-in-cops [procegen.konstantinmagnus.de]
I tried this solution and he sampled the top view satisfactorily, but this doesn't seem to be able to sample values from 1 to 0 outside of volume, I would like to ask how I can get SDF values from 1 to 0 outside of volume, e.g. sampling the SDF from the bottom left of the scene and getting this result.

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screenshot-20231106-161810.png (94.5 KB)

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cncverkstad
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Try This.

Attachments:
VolumeComune01.hiplc (363.9 KB)

Conservation of Momentum
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