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General => Terragen Discussion => Topic started by: mhaze on January 23, 2019, 08:12:32 am

Title: Vector output to ZBrush
Post by: mhaze on January 23, 2019, 08:12:32 am
I've been following an excellent tutorial on how to convert TG terrains to Vector output. Has anyone tried this with ZBrush as I have totally failed to import the map in any usable way. Help and advice gratefully received.
Title: Re: Vector output to ZBrush
Post by: j meyer on January 23, 2019, 11:36:13 am
Have you seen this video already?

Sorry, had to edit this, because the link lead to the wrong video.
I'll be back soon.
Title: Re: Vector output to ZBrush
Post by: j meyer on January 23, 2019, 11:49:16 am
Seems like I'm not able to make a link that leads to the video directly.
It's on ZBCentral or youtube under #Ask ZBrush Vol.2 , video no.50.
Titled: #Ask ZBrush:"How can I import and export Vector Displacement Maps for sculpting?"
You should find the solution there.
Sorry for the inconvenient way with no direct link.
Title: Re: Vector output to ZBrush
Post by: mhaze on January 23, 2019, 11:57:06 am
Hi, Yep I've watched it and tried it- I get a very stretched sphere with the VDM spread over it.  I've saved the output from TG as a .exr  both 16 and 32 bit and tried both in ZB - no luck!
Title: Re: Vector output to ZBrush
Post by: j meyer on January 23, 2019, 12:32:45 pm
Too bad.
Unfortunately I don't know of any solution here.
Maybe Pixologic's support can help.
Title: Re: Vector output to ZBrush
Post by: mhaze on January 23, 2019, 01:18:32 pm
I hope so, I've contacted them.
Title: Re: Vector output to ZBrush
Post by: digitalguru on January 23, 2019, 03:21:03 pm
I don't use Zbrush, but the last I heard it could output vector displacements but not read them, hopefully, that's changed.
Title: Re: Vector output to ZBrush
Post by: mhaze on January 23, 2019, 03:45:02 pm
No, sadly that's still the case.
Title: Re: Vector output to ZBrush
Post by: mhaze on January 24, 2019, 04:52:35 am
Seems mudbox is the only program that can do this - subscription only!
Title: Re: Vector output to ZBrush
Post by: digitalguru on January 24, 2019, 06:10:07 am
Yes, but it's not too bad if you only want to use it for a month.
Shame, because there seem to be a lot more tutorials and examples for sculpting nice rock in Zbrush than Mudbox

Title: Re: Vector output to ZBrush
Post by: mhaze on January 24, 2019, 11:39:28 am
I've found another way this time but.. maybe in the future.
Title: Re: Vector output to ZBrush
Post by: D.A. Bentley on January 30, 2019, 12:37:18 pm
Not sure if I understand your question, but ZBrush 2018 does support export of Vector Displacement Maps (VDM).

-Here are some links-

Video showing the VDM Export Process (skipped ahead to correct time):
https://youtu.be/F_uus4pQVPA?t=310 (https://youtu.be/F_uus4pQVPA?t=310)

ZBrush Docs on VDMs:
http://docs.pixologic.com/user-guide/3d-modeling/exporting-your-model/vector-displacement-maps/ (http://docs.pixologic.com/user-guide/3d-modeling/exporting-your-model/vector-displacement-maps/)

A video showing you how to create a "VDM Brush" in ZBrush (not a map but useful in ZBrush):
https://www.youtube.com/watch?v=Aul9wWSovNs (https://www.youtube.com/watch?v=Aul9wWSovNs)

Also there are other Apps as mentioned that can export VDMs such as Mudbox, Modo, and Terragen.

Mudbox Videos:
https://www.youtube.com/watch?v=fJJQaQDRkG8 (https://www.youtube.com/watch?v=fJJQaQDRkG8)
https://www.youtube.com/watch?v=vkb9HX6FSZE (https://www.youtube.com/watch?v=vkb9HX6FSZE)

Modo:
https://learn.foundry.com/modo/content/help/pages/sculpting/sculpt_commands.html (https://learn.foundry.com/modo/content/help/pages/sculpting/sculpt_commands.html)
http://community.foundry.com/discuss/topic/36800/geometry-to-brush-how-does-it-work (http://community.foundry.com/discuss/topic/36800/geometry-to-brush-how-does-it-work)

Terragen:
https://www.youtube.com/watch?v=bTKfAeEPDhY&feature=youtu.be (https://www.youtube.com/watch?v=bTKfAeEPDhY&feature=youtu.be)
https://planetside.co.uk/forums/index.php?topic=21311.0 (https://planetside.co.uk/forums/index.php?topic=21311.0)

I'm not sure, but Blender might export VDMs as well.

Hope that helps,

Derek



Title: Re: Vector output to ZBrush
Post by: mhaze on January 30, 2019, 12:41:55 pm
The problem is importing a terragen generated VDM into another software.
Title: Re: Vector output to ZBrush
Post by: D.A. Bentley on January 30, 2019, 12:45:18 pm
Quote from: mhaze on January 30, 2019, 12:41:55 pm
The problem is importing a terragen generated VDM into another software.


Ah, I see.  Well there are plenty of programs that can import/convert VDMs to a 3D mesh, so you could just convert the mesh to an OBJ model and import that into ZBrush.  :)

Modo can freeze Displacement, and Vector Displacement to a mesh item:
https://learn.foundry.com/modo/content/help/pages/layout/freezing_geometry.html?Highlight=Vector%20Displacement (https://learn.foundry.com/modo/content/help/pages/layout/freezing_geometry.html?Highlight=Vector%20Displacement)

Blender seems to be capable of doing this (Export mesh with VDM applied):
https://www.youtube.com/watch?v=vgKjn1mV2hI (https://www.youtube.com/watch?v=vgKjn1mV2hI)
https://docs.blender.org/manual/en/latest/render/cycles/nodes/types/vector/vector_displacement.html (https://docs.blender.org/manual/en/latest/render/cycles/nodes/types/vector/vector_displacement.html)
Title: Re: Vector output to ZBrush
Post by: mhaze on January 31, 2019, 04:56:48 am
Thanks I'll investigate.
Title: Re: Vector output to ZBrush
Post by: D.A. Bentley on January 31, 2019, 09:34:59 am
Quote from: mhaze on January 24, 2019, 11:39:28 am
I've found another way this time but.. maybe in the future.


Just out of curiosity, what was your other method?
Title: Re: Vector output to ZBrush
Post by: mhaze on January 31, 2019, 09:44:24 am
painted shader and simple shape shaders.