Determining correct falloff

[dubcat]

Doesn't appear to be anything in the material Library....

Ops, sorry about that. Try again

[grantwarwick]

Hey Rens,

I didn't mean to offend you. So no need to feel sorry. Anyway, what I think would be nice to have would be something like this:
[ATTACH=CONFIG]23937[/ATTACH]

It's a mix of setting artist-friendly 0-Degree-Color and the UI of the Arch&Design-Material. So you can visualize the curve right away, while still not having to work with these unfriendly output-curve of max.
Of course, this is just a 5-Minute PhotoShop-UI and lacks many other aspects, e.g. setting n+k values. But this woud speed up working with these curves and color values for me.
Maybe something like this could be implemented with a mix of scripted texturemap, OSL-Shader and Dotnet-UI... but well... I'm drifting away...

PS: the values in there don't make sense... just a photoshop-quickie as I said...

Looks great to me.
I too, feel stupid reading this thread but I'll make sure to link to viscorbels post and this thread when explaining in a later lesson.
Cheers guys for clearing all this up!

[Deflaminis]

Anyone feeling benevolent enough to do a post here detailing the conclusion and best methodology? I'm ashamed to admit I'm not sure after re-reading multiple times.

[Vizioen]

Anyone feeling benevolent enough to do a post here detailing the conclusion and best methodology? I'm ashamed to admit I'm not sure after re-reading multiple times.

Don't be ashamed, I got lost in there too

[joconnell]

There doesn't seem to be one ideal one just yet, the osl stuff will let you use refractive index data *but* it's not the most intuitive to tweak with and the data will only give you matches for one specific sample of a metal which may not match yours - you won't get artistic control afterwards. The falloff / mapped gradient stuff will give you more tweakability afterwards but it means a bit more setup. I reckon someone'll probably throw together a better OSL map that has all the bits combined similar to that ui concept posted.

[Dave_Wortley]

I'm talking to Autodesk to see if we can't get a linear Falloff map, but well, don't hold your breath!

[joconnell]

Get them to do a proper colour correct while they're at it.

[Deflaminis]

There doesn't seem to be one ideal one just yet, the osl stuff will let you use refractive index data *but* it's not the most intuitive to tweak with and the data will only give you matches for one specific sample of a metal which may not match yours - you won't get artistic control afterwards. The falloff / mapped gradient stuff will give you more tweakability afterwards but it means a bit more setup. I reckon someone'll probably throw together a better OSL map that has all the bits combined similar to that ui concept posted.

Thank you for this heads up.

[Midiaeffects]

Hm yeah, it is slightly towards 0 degrees:

[ATTACH=CONFIG]23892[/ATTACH]

Left VrayBlend with Falloff as mask, VRayMtl for both, one diffuse, one reflective.
Right VRayMtl with Refl.
All at IOR 1,6.

I doubt that's because of the cos/linear issue though, maybe some energy preservation difference, or a slightly different equation.

Bercon Gradient in fresnel mode produces the same result as Vray.

-Eugenio

[jackieteh]

Ops, sorry about that. Try again

No luck for me, i download it but cannot open it in my max 2014