Page 2 of 2

Re: IOR oddity.

Posted: Wed Jun 11, 2014 4:10 pm
by seghier
nachob wrote:Hi Fernando,

Its similar to the behavior you see when applying a dielectric or a SSS to a plane, it may look similar but its no correct. In the way it works here, the IOR could have dielectric properties and the engine is acting as the object where its applied has thickness. In your example, putting you camera inside a cube is like putting inside several planes, so its the same problem. For an IOR to work correctly must be applied to objects with thickness.

nachob
yes it work
quick test :
left : thick zinc / right : thin zinc ( the same material used : zinc selenide)

Image

Re: IOR oddity.

Posted: Wed Jun 11, 2014 4:38 pm
by Fernando Tella
nachob wrote:Hi Fernando,

Its similar to the behavior you see when applying a dielectric or a SSS to a plane, it may look similar but its no correct. In the way it works here, the IOR could have dielectric properties and the engine is acting as the object where its applied has thickness. In your example, putting you camera inside a cube is like putting inside several planes, so its the same problem. For an IOR to work correctly must be applied to objects with thickness.

nachob
Ok, got it. It makes sense.

Thanks!

(Maybe this should be included in the support page about ior files for newcomers to know)

Re: IOR oddity.

Posted: Wed Jun 11, 2014 7:59 pm
by Mihai
I added it to the docs now.

Re: IOR oddity.

Posted: Thu Jun 12, 2014 1:07 am
by Fernando Tella
Very efficient!

:D