Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] General Discussion => Topic started by: danduya on 2020-10-27, 10:31:46

Title: Reflect ligth beam with mirror
Post by: danduya on 2020-10-27, 10:31:46
I tried to reflect light illumination with a mirror but i fail.
Am i doing something wrong? Is it possible to do?
If not, why this limitation?
Title: Re: Reflect ligth beam with mirror
Post by: TomG on 2020-10-27, 12:16:54
You need to enable caustics for the render engine, and have a very strong, very directional light source. Note that this will not work with volumetrics though (your example shows the light in the atmosphere, which is volumetrics, and caustics don't work in volumetrics, at present at least). So the best thing to do would be to fake it in some way :) If you just want the reflected light showing on surfaces, then you can do it with caustics.
Title: Re: Reflect ligth beam with mirror
Post by: Beanzvision on 2020-10-27, 14:31:58
And here's a faked version to get you started. ;)

(https://forum.corona-renderer.com/index.php?action=dlattach;topic=31369.0;attach=136356;image)
Title: Re: Reflect ligth beam with mirror
Post by: maru on 2020-10-27, 17:58:30
As explained, you need to enable the caustics solver - https://help.c4d.corona-renderer.com/support/solutions/articles/12000058338-how-to-use-caustics-in-cinema-4d-

Or you can set Max Sample Intensity in Render Settings to 0, and wait a really long time. :)
Title: Re: Reflect ligth beam with mirror
Post by: Cinemike on 2020-10-27, 18:10:01
From the (few) renderers I used, Vray can (kinda) do it.
So I am hopeful that the chaos from the group will some day reach chaos czech ;)
Title: Re: Reflect ligth beam with mirror
Post by: danduya on 2020-10-28, 16:19:58
Thank you all for the reply!!

:)