Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: vinbarg on 2018-02-15, 13:39:49

Title: Fibre Optic Star Ceiling
Post by: vinbarg on 2018-02-15, 13:39:49
Hello, how can i make Fibre Optic Star Ceiling , THX for help.
Title: Re: Fibre Optic Star Ceiling
Post by: clemens_at on 2018-02-15, 14:43:49
just scatter little (hemi)spheres (or whatever shape fits best) with corona light material.
Title: Re: Fibre Optic Star Ceiling
Post by: maru on 2018-02-15, 14:45:59
Well, I can see two super simple options:
-Create the dark "base" material, then plug a map with some white spots to the self illumination slot
-Create the "dark "base" material, then plug a map with some black spots to the opacity slot. Then place a simple Corona Light above this plane.

The 1st method will give you some small illumination, but it probably won't be even visible in the render.
The 2nd option may give you some illumination from the light, so it may be the slower/worse one.
Title: Re: Fibre Optic Star Ceiling
Post by: burnin on 2018-02-15, 15:32:18
(https://i.imgur.com/hXUOmvR.jpg)
emissive geo. particles were my choice here
easy to set, better to control (colors, density, illuminance), interactive & can be developed further...
Title: Re: Fibre Optic Star Ceiling
Post by: romullus on 2018-02-15, 15:40:18
just scatter little (hemi)spheres (or whatever shape fits best) with corona light material.

That would break CScatter's instancing and you would end up with hundreds or even thousands light groups - something you wouldn't want in Corona. Maru's method with light material on a single plane, would be much better solution.
Title: Re: Fibre Optic Star Ceiling
Post by: vinbarg on 2018-02-15, 15:45:36
thank you for your help, appriciate it.
Title: Re: Fibre Optic Star Ceiling
Post by: clemens_at on 2018-02-15, 15:54:05
just scatter little (hemi)spheres (or whatever shape fits best) with corona light material.

That would break CScatter's instancing and you would end up with hundreds or even thousands light groups - something you wouldn't want in Corona. Maru's method with light material on a single plane, would be much better solution.

didnt know that!
i used this method in a project on a very large ceiling and it worked just fine - didnt notice any drawbacks.
Title: Re: Fibre Optic Star Ceiling
Post by: maru on 2018-02-15, 18:00:32
It would work fine with "emit light" disabled.
Otherwise scattering a lot of lights is not a good idea indeed. :)