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Is this possible?

Posted: Mon Mar 21, 2016 9:47 pm
by scottbaggett
Hello all!

I've been trying for the last week to recreate this look of light and shadows on an uneven surface but I cannot seem to find a way to do it with Octane's physical lighting. I thought maybe I could just use a texture light, but that produces soft results. I might just have to go back and use non physical rendering for this, but would prefer to keep my octane workflow. Essentially its similar to Maya's barn door effect on spotlights. I figured the only way to do it would be to use the sunlight engine to mimic red sunlight flooding in through these vertical strips in the wall, but so far thats proving to be not very effective.

Any tips would be greatly appreciated!

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Re: Is this possible?

Posted: Mon Mar 21, 2016 9:51 pm
by aoktar
Have you tried a barn texture in Octane lighttag's texture input?

Re: Is this possible?

Posted: Mon Mar 21, 2016 9:57 pm
by scottbaggett
I have but it gives me very soft shadows. It seems like it has to be an infinite light, which can only happen in the sunlight environment.

Re: Is this possible?

Posted: Mon Mar 21, 2016 10:01 pm
by aoktar
scottbaggett wrote:I have but it gives me very soft shadows. It seems like it has to be an infinite light, which can only happen in the sunlight environment.
have you tried to scale the arealight as very small?

Re: Is this possible?

Posted: Mon Mar 21, 2016 10:06 pm
by scottbaggett
Yeah, but I will set up a test scene again and post my results. I appreciate your quick responses!

Re: Is this possible?

Posted: Mon Mar 21, 2016 10:25 pm
by scottbaggett
OK here's a quick test with a very small area light. As you can see I can get the shadows to be fairly sharp, but the issue is really that the light comes from a single point in space, versus a direction which is what i'd need to get very straight lines across the body.

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Re: Is this possible?

Posted: Mon Mar 21, 2016 10:47 pm
by aoktar
yeah right. But found another way see this scene.

Re: Is this possible?

Posted: Mon Mar 21, 2016 11:00 pm
by scottbaggett
You are my hero. Thank you!

Re: Is this possible?

Posted: Tue Mar 22, 2016 12:49 am
by scottbaggett
Thanks so much this is working great.

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Re: Is this possible?

Posted: Tue Mar 22, 2016 1:10 pm
by Yambo
Inspired by same technique :)