Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] General Discussion => Topic started by: BigAl3D on 2021-12-22, 20:00:30

Title: Physical Material and Paint Flakes
Post by: BigAl3D on 2021-12-22, 20:00:30

I'm trying to get good with the new Physical material system and I'm liking it. One question I have is how would I go about adding a car paint flake effect using this system? Ironically, the material library's car paint examples are using legacy materials and layers. Can the flakes be done withing one Physical material?

Title: Re: Physical Material and Paint Flakes
Post by: Beanzvision on 2021-12-23, 13:46:09

Hi there,

The first example is the car paint from the material library manually converted to physical. And the second and third examples are from scratch just using the physical mat. I hope that helps. 

1.
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=35196.0;attach=158620;image)

2.
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=35196.0;attach=158622;image)

3.
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=35196.0;attach=158624;image)

Title: Re: Physical Material and Paint Flakes
Post by: BigAl3D on 2021-12-23, 19:13:17

Yes, that's very helpful. Thanks for your help.

Title: Re: Physical Material and Paint Flakes
Post by: Beanzvision on 2021-12-24, 14:10:37

You're most welcome! :)

Title: Re: Physical Material and Paint Flakes
Post by: frv on 2021-12-25, 13:17:08

I believe there are issues with the C4D asset browser in R25 with layered materials.  These Corona materials don't import.

Title: Re: Physical Material and Paint Flakes
Post by: burnin on 2021-12-25, 15:56:58

How come?

All components import fine here (R25 + v8 daily from Dec 16 2021)

Note:
Corona Materials are imported via Corona's Material Library. Unless you made your own assets/presets from those. But those also work.


PS
@ Beanzvision
Do I see tiling on 3. image ;)

Title: Re: Physical Material and Paint Flakes
Post by: Beanzvision on 2021-12-27, 12:35:26

Quote from: burnin on 2021-12-25, 15:56:58

PS
@ Beanzvision
Do I see tiling on 3. image ;)

Indeed you do! ;) Next time, I'll use something seamless. :D

Title: Re: Physical Material and Paint Flakes
Post by: Philw on 2022-01-03, 14:38:31

Have you tried Maxon Cell Voronoi? Potentially without triplanar needed?

Title: Re: Physical Material and Paint Flakes
Post by: Beanzvision on 2022-01-03, 15:02:58

I don't see why that wouldn't work ;)

Title: Re: Physical Material and Paint Flakes
Post by: Philw on 2022-01-03, 15:07:22

I'm just trying to tweak the noise scale and contrast to get something working but I'm certainly no expert!

Title: Re: Physical Material and Paint Flakes
Post by: Beanzvision on 2022-01-03, 15:32:13

Here is what it looks like using Cell Voronoi. Hope that helps.

(https://forum.corona-renderer.com/index.php?action=dlattach;topic=35196.0;attach=159065;image)

Title: Re: Physical Material and Paint Flakes
Post by: sykane on 2022-01-25, 15:16:38

I really don't get how you create reflective Flake Car Paint with the new Physical Material... to me also the shown stuff does not look at all like Flakes?!

Title: Re: Physical Material and Paint Flakes
Post by: Stefan-L on 2022-01-28, 15:06:33

i would try adding a normal map for flakes, similar to this:

https://docs.chaos.com/display/OSLShaders/Flakes+normal+map

bump isnt enough in my experience to make ok glittering flakes:
there are many if you do a google search or you can pretty easy make them yourselves

Title: Re: Physical Material and Paint Flakes
Post by: burnin on 2022-01-29, 02:30:00

Physical is just fine & has everything it needs...

v.8 is toxic :)
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=35196.0;attach=160062;image)

Title: Re: Physical Material and Paint Flakes
Post by: sykane on 2022-01-30, 18:36:43

Wow!

Do you mind sharing a Picture of your Material Structure?

Title: Re: Physical Material and Paint Flakes
Post by: Beanzvision on 2022-01-31, 15:55:04

I would assume his material setup might be similar to this...

(https://forum.corona-renderer.com/index.php?action=dlattach;topic=35196.0;attach=160244;image)

Title: Re: Physical Material and Paint Flakes
Post by: burnin on 2022-01-31, 23:10:15

Basically, yes ;)

Title: Re: Physical Material and Paint Flakes
Post by: BigAl3D on 2022-02-03, 00:50:43

I am surprised how difficult it is to match your results. Seems pretty straight forward, but can't get it to look like that.

Title: Re: Physical Material and Paint Flakes
Post by: burnin on 2022-02-03, 03:01:54

oh, I wouldn't bother matching the result,
specifically, it's a unique procedural mix based off of what's shown
just do it to your taste