Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: Ali3D on 2022-10-28, 03:03:11

Title: Scanned Car Paint Material wrong reflections
Post by: Ali3D on 2022-10-28, 03:03:11

Hi All,

I am updating my Cars with the new Scanned Materials, but some Cars are giving me wrong Results on the Reflections as in the Images attached. The Porsche works well, but the Mercedes not. Projection is on UVW-Mapping and nothing changes with the other ones. Also on the Mercedes nothing changes when I play with the Tiling scale in the Scanned Material.

No Solution with or without Subdivison or splitting mesh from multible tags.

Btw the standart Carpaints from the Material Library are working with the mesh, only not with the Scanned ones.

Any Idea?

Thanks for your time!

Title: Re: Scanned Car Paint Material wrong reflections
Post by: Beanzvision on 2022-10-28, 07:47:24

Hi there, can you tell us where the car model is from and what scanned material you are using?

*Update. The issue here is the model is lacking proper/correct UVW mapping.

(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38257.0;attach=173559;image)

Title: Re: Scanned Car Paint Material wrong reflections
Post by: Ali3D on 2022-10-28, 10:58:39

Thank you, you are right! The UV Mapping on the Porsche was done perfectly, the body parts are all seperatly mapped, which i could see on the BP - UV Edit Layout. The mercedes not. I solved it by changing the Projection from the Body to Quader in the UV Edit section.

The Model is from 3dsky and both from the same artist. carpaint_grey_2_s.

Only the flakes were still to Big on Tiling scale: 1 but I just use 10 and it looks perfect to me.

Thank you very much, I totally forgot about the UV Mapping itself.

Title: Re: Scanned Car Paint Material wrong reflections
Post by: Beanzvision on 2022-10-28, 11:44:43

You're most welcome! :)