my mappings dont not work with emissions

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my mappings dont not work with emissions

Postby eisberger » Wed Sep 03, 2014 6:18 pm

eisberger Wed Sep 03, 2014 6:18 pm
Hi

I trying to put an illuminated image in my renderings. Just like on a monitor screen or on an lightbox with an image. This is what I do:

- I map an image in sketchup on a surface
- I convert this image into a diffuse material in "octane materials"
- Now I have my surface in my octane render window with that mapped image. All good. But it does not "glow" like a screen or lightbox.
- So I add "emission textrue" on the "emission" tab of that material and select the same image file as a texture file.
- I get a nice glowing image.

But the mapping is all wrong of this glowing image now. Instead of one big image I get a zilion small images mapped over the diffuse image of the material.

I tried all the online resources and the helpfiles but could not find anything that helped. Surely my mistake.
But what am I doing wrong? I need to finish this render asap.

Thanks for any help!
eisberger
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Re: my mappings dont not work with emissions

Postby fuzzybro » Wed Sep 03, 2014 6:56 pm

fuzzybro Wed Sep 03, 2014 6:56 pm
Hi eisberger,

There is a transformation matrix for every texture node. So just go to the emission node and adjust the scale as needed.
Due to complexity of SU <--> Octane materials sync some quirks might arise, so just use transforms to align textures.

Cheers

eisberger wrote:Hi

I trying to put an illuminated image in my renderings. Just like on a monitor screen or on an lightbox with an image. This is what I do:

- I map an image in sketchup on a surface
- I convert this image into a diffuse material in "octane materials"
- Now I have my surface in my octane render window with that mapped image. All good. But it does not "glow" like a screen or lightbox.
- So I add "emission textrue" on the "emission" tab of that material and select the same image file as a texture file.
- I get a nice glowing image.

But the mapping is all wrong of this glowing image now. Instead of one big image I get a zilion small images mapped over the diffuse image of the material.

I tried all the online resources and the helpfiles but could not find anything that helped. Surely my mistake.
But what am I doing wrong? I need to finish this render asap.

Thanks for any help!
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Re: my mappings dont not work with emissions

Postby Seekerfinder » Wed Sep 03, 2014 7:20 pm

Seekerfinder Wed Sep 03, 2014 7:20 pm
But it would great if the UV mapping from SU gets transferred. High up on the wish-list Fuzzy!

Best,
Seeker
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Re: my mappings dont not work with emissions

Postby eisberger » Wed Sep 03, 2014 7:27 pm

eisberger Wed Sep 03, 2014 7:27 pm
Thx for the quick reply, mate! I found the button in the mean time aswell, but I thought there must be a more elegant way somewhere too....;) It is just a bit fiddly and jumpy to nudge the map into the right position. Being able to lock the scale would be a great help for example and a more sensitive dial for the positionig... but I can work with what I have right now.
Thanks again!
eisberger
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