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eidosmontreal / unreal-vdb

This repo is a non-official Unreal plugin that can read OpenVDB and NanoVDB files in Unreal.
Apache License 2.0
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Houdini Axiom to Unreal-VDB tutorial?? #50

Closed davoodkharmanzar closed 1 year ago

davoodkharmanzar commented 1 year ago

hey, does exists any tutorial to describe how to make vdb for Unreal-VDB with Axiom?

thanks.

thilamb commented 1 year ago

No there isn’t but like any other digital content creator it should be able to export your sims to VDB files (you can probably find some Axiom tutorials).

Once exported, juste import them in Unreal using advices from README.md and from here HELPME.com as well.

davoodkharmanzar commented 1 year ago

also i tried to import ... but did not showed up anything :[

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davoodkharmanzar commented 1 year ago

any suggestions? thanks.

thilamb commented 1 year ago

Try increasing « Density » (100, 500, 1000?) and decreasing « (Local) Step size » (1, 0.1, 0.01) until you see something. Let me know.

On Sat, Dec 10, 2022 at 7:58 AM dvd.kh @.***> wrote:

any suggestions? thanks.

— Reply to this email directly, view it on GitHub https://github.com/eidosmontreal/unreal-vdb/issues/50#issuecomment-1345259637, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABVUKHQIY2AC6MEUDGPC56DWMR5AVANCNFSM6AAAAAASXZEZJQ . You are receiving this because you commented.Message ID: @.***>

davoodkharmanzar commented 1 year ago

nice ... yup ... it worked ...

but ...

1) have to 100 times scale up on unreal ... any suggestions?

2) i have facing problem with Color Channel (aka Cd on Houdini) ... sometimes plugin can read this and sometimes doesn't accept it!! why??

P.S.: used pyrobakevolume node to adjust channels on houdini ...

thilamb commented 1 year ago

  1. The 100 times scale up is normal. Every software use different distance units. Unreal uses centimeters (1 unit == 1 cm). I don't know about Houdini and I guess it's customizable, in the editor and also maybe during export.

  2. I'm not sure about this one. The "color" vdb should have the same transform (and basic properties) as the main "density" vdb. And it should have values between 0 and 1. If you find a specific issue, let's open another ticket with a better report and repro case (sharing the vdbs would be ideal).

Thanks !