Shattering Glass (Element 3D - Project Help)

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Shattering Glass (Element 3D - Project Help)

Postby snicket on 12/27/2016, 5:50 pm

Hey folks!

Been working on this project here for short film that involves a frozen in time car crash. They want glass shards floating in the air around the actors, some shots involve camera moves (super easy track on those shots).

What I can't seem to figure out is how to get a realistic looking glass out of Element 3D. Maybe it just isn't powerful enough to do this? I really think it can be pushed to create some great stuff. I am a compositor so I am honestly not that familiar with 3D work.

Here is a screen grab so far, and I'll attach a clean plate as well.

I feel like it is missing the refraction that glass normal has and is much too "solid" looking. It feels like rocks not glass.

With-FX.jpg
Screen Shot with FX



without-FX.jpg
without FX
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Re: Shattering Glass (Element 3D - Project Help)

Postby JPT7505 on 12/27/2016, 9:12 pm

Well, first off it looks like the pieces are rather thick. A windshield isn't that thick, especially that piece by his face. I also think the shapes are wrong. Check out the following.

https://www.google.com/search?q=shatter ... I9zdONM%3A

Sorry for the super long link.

It also looks like the weird refractions are on the edges, not through the portion that was originally on the inside or outside of the vehicle while the transparency is throughout the entire piece. So you can't see clearly through the shards on the edges but you can through the middle, make sense?

Not sure what the best way would be to achieve this with element but it's a start to get the right look.
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Re: Shattering Glass (Element 3D - Project Help)

Postby snicket on 12/28/2016, 8:15 am

Yeah, that's been one of my biggest hurdles is finding out how to get transparency on the glass while still keeping the "solid" look and getting refractions on the edges.

I made a much thinner shatter map and model in Blender and am now working off that so that has helped the thickness a lot.
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Re: Shattering Glass (Element 3D - Project Help)

Postby snicket on 12/28/2016, 6:20 pm

Update on where I am at.
Attachments
closer.jpg
Closer
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Re: Shattering Glass (Element 3D - Project Help)

Postby Carsten on 01/4/2017, 7:44 am

It´s difficult to say with this jpg, but maybe you can adjust the lights, reflections of the glas and use stockfootage for dust and particles.
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Re: Shattering Glass (Element 3D - Project Help)

Postby Duncan on 01/4/2017, 9:13 am

Have you tried precomposing a copy of your camera and Element layer and setting the Element Output to "Normals". Then using that as a Displacement Map in your main comp?
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Re: Shattering Glass (Element 3D - Project Help)

Postby snicket on 01/5/2017, 9:26 am

Using the normal output as displacement map helped. But the transparency of the glass just doesn't read right. Andrew's tutorial using 3Ds Max looks beautiful, but I can't get the glass looking anywhere near that in E3D.

Plus, I'm on a Mac so no luck purchasing a copy of 3Ds Max either.
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Re: Shattering Glass (Element 3D - Project Help)

Postby sinekraft on 01/11/2017, 7:43 am

I think you're pretty close. Maybe blend that normal output and your other approach together to find a good mix.
The things that threw me off immediately we're the following:

- Some glass pieces aren't matching color of the "environment" for their transparency/reflections.
Especially the grey/blue-ish piece on the right of his mustache. There's no way it would reflect that color in the scene.

- DoF doesn't match the lens in the "plate". Try to match the aperture and focus distance.
The main problem is some pieces are in focus at places were the footage contains objects closer to the lens wich are out of focus.
This is physically not really possible unless it's a funky double focus lens. :p

- Final correction could use some work too. The darker areas of your footage should contain less opaque glass pieces since they can't reflect as much light.
The ones on the left are too visible.

Hope it helps and good luck!
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Re: Shattering Glass (Element 3D - Project Help)

Postby Guitarboy2828 on 01/11/2017, 9:11 am

I agree with Sinekraft, at this point, I think composite is the thing making it look "fake." Colors, shadows, dof, etc. is all off. Glass pieces look great now.
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