[Sidefx-houdini-list] Simulating long hair with Houdini
marc-andre.carbonneau at ubisoft.com
Tue Nov 27 13:32:17 EST 2007
Thanks Andy and Peter for your replies...
I'm surprised only two people replied, I thought Houdini would be used often to create long hair due to it's dynamic simulation reputation.
I'm suspicious studios actually develop their own dynamic tools when it comes to hair. I read they wrote one for Beowulf.
I'll keep fiddling around in Houdini, see if I can lower the solving time.
From: Andy Boyd [mailto:andy at methodstudios.com]
Sent: November 26, 2007 5:30 PM
To: sidefx-houdini-list at sidefx.com
Cc: Marc-Andre Carbonneau
Subject: Re: [Sidefx-houdini-list] Simulating long hair with Houdini
I'm finding the same thing on long or short hair. I am using the DOPs
wire solver to simulate the dynamics on the hair on my object and I'm
finding it very slow.
To compare speeds I did a test...houdini vs. maya
I created the same setup in maya and houdini - a torus with 900 curves
each with 4 points. There was no collisions on either set up. To play
through 50 frames in maya took 24 seconds, in houdini it took 90
seconds!!! that more than 3 times slower.
I've attached both scenes for you to look at. I've emailed support these
scenes, hopefully they'll recommend a faster setup or just make the
Even thought houdini is slower the plus side of being procedural makes
it worth the longer simulation for what I'm doing. Pity it can't be
better and faster!
Marc-Andre Carbonneau wrote:
> Hi there,
> First email here! I just started learning Houdini.
> I'm evaluating the possibilities of using Houdini in production but I'm finding it to be very slow even with few hair guides and as little segments as I can afford.
> Does anyone use Houdini to simulate long hair for feature films or such high-quality product?
> Any advice, tricks or recommendations?
> Thank you
> Marc-André Carbonneau
> VFX artist
> Ubisoft Digital Arts
> 514.490.2000 x:3443
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