MAXON CINEMA 4D: Cinema 4D Forum Adobe After Effects Forum

Hair mapping

COW Forums : Maxon Cinema 4D

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
Nick Smith
Hair mapping
on Jun 3, 2016 at 8:17:40 am

Hi Guys,

this is probably quite a simple problem to fix, but I can't seem to find an answer online. Maybe I'm not using the right key words.
Anyway, this is something I've been trying to figure out for a while so hopefully you lovely people can help me.

Is it possible to restrict hair growth in C4d using a texture? example; I've got a tennis ball, and I want it to be a little fuzzy, but only in the yellow sections. so where the white rubber runs around it I obviously want the hair not to grow. Is there an easy way of doing this by applying the same texture?

Thanks,

Nick Smith

"So long, and thanks for all the fish."

http://www.anarkyanimations.co.uk


Return to posts index

Brian Jones
Re: Hair mapping
on Jun 3, 2016 at 2:44:14 pm

the usual method is to use a grayscale map in the hair material's Length parameter. It doesn't make the hair (guides) change in the viewport but on render the hair will be full length where white is and 0 length where black is.


Return to posts index

Nick Smith
Re: Hair mapping
on Jun 3, 2016 at 3:53:19 pm

Hi,

Thanks for replying, and I've tried that but on the final render it still comes through :/

Nick Smith

"So long, and thanks for all the fish."

http://www.anarkyanimations.co.uk


Return to posts index


Adam Trachtenberg
Re: Hair mapping
on Jun 3, 2016 at 4:46:41 pm

Not sure if it would matter but I would typically put the map in the hair material's density channel rather than length. If you set the hair object to display hair lines in the viewport you should see the effect in the editor window. Make sure you're map is correct as far as UV mapping goes.


Return to posts index

Brian Jones
Re: Hair mapping
on Jun 3, 2016 at 4:51:02 pm

with either method (Density or Length) white is 100 and black is 0 so if you are applying the same image as for the color channel (as implied in the first post) you wouldn't get the correct result unless you recolored it.


Return to posts index

Nick Smith
Re: Hair mapping
on Jun 4, 2016 at 8:23:43 am

OK, I'll try setting up the map again.
Would using Vray be effecting this in anyway?
I've tried using the map in nearly every channel so far and nothing seems to be working.

Nick Smith

"So long, and thanks for all the fish."

http://www.anarkyanimations.co.uk


Return to posts index


Brian Jones
Re: Hair mapping
on Jun 4, 2016 at 3:56:58 pm

oh yeah you mentioned VRay... I don't know, I don't use anything but Standard and Physical (though I've played a bit with IRay and Indigo and Renderman). But even with Physical there are limitations with Hair compared to Standard. Unless someone here knows you'd have to ask on a VRay forum (or somewhere where there are a bunch of VRay users)


Return to posts index

Nick Smith
Re: Hair mapping
on Jun 8, 2016 at 1:35:13 pm

Hi all!

Thanks for the help.
Putting the map into the density worked, but I had to reset the UVW map first. I think something somewhere got screwed.
Cheers ^_^

Nick Smith

"So long, and thanks for all the fish."

http://www.anarkyanimations.co.uk


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]