Hair Farm Forums

I've been trying to create realistic fur for a sheep, and getting it to simulate believably, and these are my results so far.

There are some shadow artifacts on the simulation test, and the fur feels a tad light, but these are works in progress

Beautiful work! Simply awesome.

Joe

WOW Awesome!! Can't wait to see more

Superbb!!

Great job. Love the animation. So lifelike....the hair that is. This ought to inspire a lot of frustrated hair and fur users.

Holy Cow! or should I say Holy Sheep!

I think you just blew my mind! stunning work!

EDIT

How did you do the lighting? what are your settings, very natural. It looks like there is some GI bounce in there?

Thanks everyone

Lee: No GI, even though I wish I had. It's a basic three point setup, with a carefully colored spot coming from below.

superrune wrote:Thanks everyone

Lee: No GI, even though I wish I had. It's a basic three point setup, with a carefully colored spot coming from below.

Sweet trick! well it works great!

Here's an updated render of the simulation. The fur is a lot thicker now, and I love the weighty feel of this sim. It took some days to render though, V-Ray kept crashing on me (usually at night, when I wasn't looking!). I'm switching over to Brazil for the next version.
I'm having some jittery simulations on parts of the sheep. You can see it around the ear at the end. Cem, any suggestions to settings I could tweak to remove them? Here's a screengrab of the Sim-modifier:

superrune wrote:I'm having some jittery simulations on parts of the sheep. You can see it around the ear at the end. Cem, any suggestions to settings I could tweak to remove them?

It seems like a collision problem. It appears that the ears are intersecting with your hair mesh volume. Try to avoid that.

Also, you don't really need collisions with the root object for this model. Turning it off might significantly improve simulation time and should get rid of that jittery motion around ears.

Thanks Cem, I will try that. The first version actually had no collisions, but still was jittery in places (you see it around the ears when the sheep is upside down). I will look at the mesh, and see if I can fix it.

I noticed the hair mesh has a fair deal of self-intersections, will that affect simulation?

Self intersection of hair mesh is not such a big deal. It would affect the behavior of hair-hair interactions in the sense that hair-hair interactions wouldn't try to resolve self-intersections, if they exist in the un-simulated hair mesh.

Intersections of the hair mesh will colliding object, on the other hand, is a whole other ball game.

It seems like I have to turn self-collisions back on. When he's on his back, the fur starts interpenetrating his tummy. Or perhaps I should create some simple collision objects instead...

Creating simple collision objects is always a good idea.

By the way, you can improve the collisions by increasing the "subdiv" parameter. It would make the collision computation slower, but more accurate.

Great - will try that too.