Baking Problems with different UV Channels

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siha
Licensed Customer
Posts: 13
Joined: Thu Feb 11, 2016 9:48 pm

Hi,

I have a question concerning texture-baking.
The problem I'm facing is to get the baking from one-UV-set to an other.
explanation: I've got a plane with regular UV-mapping. After baking this one out, the result is a stretched texture.
So I tried to "unwrap" this plane and get a non distorted UV-Layout, which messes up the texture itself... as it doesn't fit anymore.
Now I wanted to make use of the UV-set-feature inside the Camera-tag where I tried to bake the texture from first UV-layout onto the second UV-layout...
but the result is the same... is this a bug or do I miss the point of this feature and have a wrong understanding of it.

How do I even know the numeration of the UV-sets... where can I see (if there are 2 or 3), which one's the first, second or third... or is C4d just looking how they are arranged.
I'm using C4D R19 and Octane 3.08.

Many thanks in advance!
Attachments
Cinema4DUV-set-example.zip
(168.38 KiB) Downloaded 194 times
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bepeg4d
Octane Guru
Posts: 10323
Joined: Wed Jun 02, 2010 6:02 am
Location: Italy
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Hi,
since in c4d you cannot define the UV set, like you can do in other apps, you need to change the order of the uv tags in the Object manager:
Screen Shot 2018-05-25 at 12.02.16.png
the first uv tag encountered is taken into account:
Screen Shot 2018-05-25 at 12.02.29.png
You could use the Take system to automate the process.
ciao Beppe
siha
Licensed Customer
Posts: 13
Joined: Thu Feb 11, 2016 9:48 pm

Thanks for clearing this out for me.
Now my real problem is...
while the shadow gets compressed to the new UV-Set, why doesn't this happen to the actual texture itself, which is what I tried to achieve.
At the moment the texture just gets cut away.
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bepeg4d
Octane Guru
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Hi,
that's what you are actually doing, the texture is cutted, instead of been used completely, it's the same also in Viewport.
What is exactly your goal?
Have you seen this document about Baking, and in particular, how to bake multiple objects?
Texture Baking
ciao Beppe
siha
Licensed Customer
Posts: 13
Joined: Thu Feb 11, 2016 9:48 pm

Thx for your time.
Yes I went through it. Maybe I just have a wrong idea of how UVs work.

Maybe this attached image will give you a better understanding what exactly my goal is.
(e.g. coming from flatmapping and want to bake this into a compressed UV.)
Attachments
goal.jpg
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bepeg4d
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Joined: Wed Jun 02, 2010 6:02 am
Location: Italy
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Ok, but do you want to obtain something similar to this at the end?
Image
ciao Beppe
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