Cineversity

Very good tuts!
Would you know if there is a way to have a strictly luminant hair?
As if there was a luminance channel. I haven’t found any straight simple way
of doing this other than for example have an ambient light restricted to the
spline using the hair material. Then the color is set by the light.
So basically, how to set a hair material not react to light and only show
a flat color. (S&T is a way but I find hair material easier to control)

Cheers
Lennart

Hi Lennart,
Big fan
Anyway, to get to your question.
AFAIK there is no easy way to do this directly through the material it self.
One option is that you can set the hair object to generate flat strips and then apply a luminous material to that.
Easy to work with setup wise, as you can still use a hair material to control the styling of the hair.
But can slowdown, and you want to make sure that you set the editor LOD before you switch to generate.
By default it will show all the hairs…and in my tests 1 million hairs takes about 2 min to generate…
I’ll ask around and see what I can find.
Have you submitted this as a feature request?

Thanks, I do what I can and I’ve seen your notes at places:)

No, I haven’t made any feature request as I didn’t know if there was any
simple luminance option already available, I’ll do so, as well as check your
suggestions, thanks.

Cheers
Lennart

It’s not a per material solution, but you could also look into the, light include/exclude list in the hair render settings.

So in your hair material go to the illumination tab, then set:
diffuse to 0%
roughness to 0%
reflectivness to 100% and translucence to 100%
and then the rest to taste (depends on if you want shadows or not)
Then in the hair render settings go to the Lights tab and add a light source (just an omni will do.)
set the mode to include.
Then in that light’s project tab only include the hair object.

Of course then You could just use the project tab on the light source rather than use the include/exclude in the render settings.

So in the end you are still stuck with a lightsource and an include exclude…but you should be able to get a per hair object effect.

Yup, there are a few workarounds, but having the option to just slam a color on a spline would help
and I’ve posted the suggestion.

Cheers
Lennart