Glowing control panel light with bright center

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Glowing control panel light with bright center

Postby crowellster » Fri Apr 27, 2018 6:24 am

crowellster Fri Apr 27, 2018 6:24 am
Hi all,
I'm trying to make the effect of a light bulb that is under a translucent cover, as in the attached picture.

Is this best way to do this a specular material with a colored transmission on the cover, and then just a sphere with a bright emission texture within it? Or is there a way to do it in a texture, maybe with a falloff?

Thanks!
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controlpanel.jpg
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Re: Glowing control panel light with bright center

Postby bepeg4d » Fri Apr 27, 2018 7:37 am

bepeg4d Fri Apr 27, 2018 7:37 am
Hi,
use the technique in the following post:
viewtopic.php?f=23&t=52982&p=266457&hilit=noise+emitter#p266457
in this way, the invisible emitter will work to illuminate the buttons, while the visible emitter with Visible in diffuse option disabled, will work with post effect.
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Re: Glowing control panel light with bright center

Postby crowellster » Sat Apr 28, 2018 1:41 am

crowellster Sat Apr 28, 2018 1:41 am
I think I don't 100% understand what you're saying with this. I looked through that thread, and it's pretty confusing (I don't see the cast illumination checkbox). Should I be using two objects? One of which is a simple shaped emitter, one of which would be the "fake" emitter with the geometry I'd want?

Thanks!
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Re: Glowing control panel light with bright center

Postby TonyBoy » Sat Apr 28, 2018 11:34 pm

TonyBoy Sat Apr 28, 2018 11:34 pm
I think your idea will work just fine. Two objects and two materials.
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Re: Glowing control panel light with bright center

Postby bepeg4d » Tue May 01, 2018 9:38 am

bepeg4d Tue May 01, 2018 9:38 am
Hi,
here is an example with 3.08, with and without the invisible emitter in two different takes.
Real Light take with Visible on diffuse active, and the Invisible emitter deactivated:
AD990E1F-4CEE-4BB5-9EFD-4E15216B855E.jpeg

Fake Light take with Visible on diffuse deactivated, and the Invisible emitter active:
0B19858B-92A2-4070-B83C-50E698F3E010.jpeg

You have much more control with two different emitters, the visible one for the post effect, and the invisible one for the illumination, and the rendering is super fast and clean.
The invisible emitter should be more simple as possible, without overlapping any other polygon.
Here is the scene file:
fakeemitter.zip
(126.42 KiB) Downloaded 296 times

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Re: Glowing control panel light with bright center

Postby whersmy » Wed Sep 30, 2020 10:42 am

whersmy Wed Sep 30, 2020 10:42 am
hi beppe!

bumping this one up..
could you export an .orbx for us non-c4d users? :)
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Re: Glowing control panel light with bright center

Postby frankmci » Tue Oct 06, 2020 9:18 pm

frankmci Tue Oct 06, 2020 9:18 pm
whersmy wrote:hi beppe!

bumping this one up..
could you export an .orbx for us non-c4d users? :)


Sadly, I am not Beppe, but I can export the file as an .orbx. :)
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FakeEmitter.orbx.zip
Exported from C4D R21 with Octane 2020.1.4
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Re: Glowing control panel light with bright center

Postby bepeg4d » Wed Oct 07, 2020 7:58 am

bepeg4d Wed Oct 07, 2020 7:58 am
Thankfully there is Frank!
Thanks mate :D

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