Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Corona Goodies - User Contributions => Topic started by: statib on 2013-03-19, 19:26:03

Title: create iridescent material
Post by: statib on 2013-03-19, 19:26:03

hello
I am statib, I am a new user
I'm trying to use crown render, as an engine for virtual sets and interiors

I'm trying to create a material for mosaic iridescent and I would like some advice, in particular how to structure the material on crown


this is the effect that I would get

(http://thumbs.dreamstime.com/x/mattonelle-iridescenti-28255023.jpg)


ps: sorry for my english :)

Title: Re: create iridescent material
Post by: maru on 2013-03-19, 19:36:45

Most simple way I can think of is to use falloff map in reflection's colour slot. But this gives you only a two-colour gradient. Making a rainbow-like reflection would require an awkward set of falloff maps.

Title: Re: create iridescent material
Post by: maru on 2013-03-19, 19:55:27

Found a better solution:

In material's reflection colour slot add a CoronaColorMapper map. Then inside of it, as input map, add a standard black and white falloff map. Inside CoronaColorMapper map you can change colours of your gradient.

Title: Re: create iridescent material
Post by: statib on 2013-03-19, 20:28:17

ooooo thk

I try now your solution

Title: Re: create iridescent material
Post by: Ondra on 2013-03-19, 21:05:49

Nice, you can post the result here http://forum.corona-renderer.com/index.php/board,17.0.html

Title: Re: create iridescent material
Post by: maru on 2013-03-19, 21:44:39

Keymaster, I'm not sure who was your post addressed to, but I'd rather leave it to Statib as my material was a really quick and dirty setup.

Title: Re: create iridescent material
Post by: Ondra on 2013-03-19, 21:51:24

Quote from: maru on 2013-03-19, 21:44:39

Keymaster, I'm not sure who was your post addressed to, but I'd rather leave it to Statib as my material was a really quick and dirty setup.

It was for you, the result is nice and that is what matters

Title: Re: create iridescent material
Post by: maru on 2013-03-19, 22:08:39

Ok, I'll post it, then. :)

Title: Re: create iridescent material
Post by: statib on 2013-03-20, 16:30:17

hello
I tried your solution
and I made another image, replacing the Fallof with a bitmap image
how is the result?
suggestions?
(http://img401.imageshack.us/img401/4161/50913740.jpg)

Title: Re: create iridescent material
Post by: maru on 2013-03-20, 22:10:19

Not bad but I think you should leave the Falloff map in reflection slot and load your bitmap as BUMP MAP!

Title: Re: create iridescent material
Post by: statib on 2013-03-21, 15:00:54

In this case, the pieces are molded, why not just a relief map, but you should use a displacement map (but the render time would be much higher), I decided to model the tiles to give the effect of irregularities.

I tried the image map, because the falloff, so the effect distributes them too regular.
see how in the first picture seems to create a rainbow effect.
however we still will put hand, I think it can be better

Title: Re: create iridescent material
Post by: maru on 2013-03-21, 18:06:28

Here's a quick test. You are right, it's best to set a separate map besides falloff. I used procedural noise. I like the effect with very grainy map, looks like oxidized metal.

Title: Re: create iridescent material
Post by: statib on 2013-03-21, 18:25:51

this is very nice, the effect is really credible

thanks for your time

Title: Re: create iridescent material
Post by: maru on 2013-03-21, 19:09:01

No problem, remember: Corona is a drug! ;)

Title: Re: create iridescent material
Post by: 3DsMaxUser_Corona on 2014-06-18, 01:26:47

Pardon, but I do not seem to be able to locate CoronaColorMapper. I'm using v6. Can somebody point out my fault?