Sheep

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superrune
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Sheep

Post by superrune »

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 :)
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sheep_simtest.mov
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sheep_testpose.jpg
sheep_testpose.jpg (181.41 KiB) Viewed 31006 times
Last edited by superrune on Tue Feb 09, 2010 9:15 am, edited 1 time in total.
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Re: Sheep

Post by 3DTutorial »

Beautiful work! Simply awesome.

Joe
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Re: Sheep

Post by Bigguns »

WOW Awesome!! Can't wait to see more :P
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Re: Sheep

Post by anishmations »

Superbb!! :ok:
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Re: Sheep

Post by moontan »

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

Post by Infinite »

Holy Cow! or should I say Holy Sheep!

I think you just blew my mind! stunning work! :ok:

EDIT

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

Post by superrune »

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.
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Re: Sheep

Post by Infinite »

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! :D
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Re: Sheep

Post by superrune »

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.
100212_sheep_simtest.mov
(3.9 MiB) Downloaded 27154 times
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:
simsettings.jpg
simsettings.jpg (149.9 KiB) Viewed 30750 times
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Re: Sheep

Post by cem »

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.
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superrune
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Re: Sheep

Post by superrune »

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.
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Re: Sheep

Post by superrune »

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

Post by cem »

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.
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superrune
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Re: Sheep

Post by superrune »

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...
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Re: Sheep

Post by cem »

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.
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Re: Sheep

Post by superrune »

Great - will try that too.
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