CGTalk - MOCCA/critique WIP

bobzilla

01-10-2003, 01:24 AM

Has anybody used MOCCA yet? I've just stsrted working with it and I have some questions, if anyone could help I would appreciate it.

I have a single mesh character (eyes, teeth, tongue separate) made with HyperNURBs. When I use soft IK and HyperNURBS is enabled the model goes berserk! It never rests. It justs forever refreshes. HELP!

Also, if I want to use PoseMixer for the hands and feet, how does that work on a single mesh? do I make copies of just the hnads and feet, or the entire mesh?

See attached for my MOCCA victim and please critique.

Thanks very much.

ChrisVilla

01-10-2003, 02:42 AM

Just a few questions to start off:

The Soft IK begins to go berserk...how?...What exactly are you doing and what result is that producing?

On this character, I could see the tail and perhaps the neck being controlled with Soft Ik, but for the rest, I would just use regular IK. Reason being, why make unnecessary calculations if their never actually going to be used and that they could help contribute to errors. Like with anything in 3D, do just enough to make it work.

Concerning the hands, what I would do is create a number of poses using bones with morphing driven through Posemixer. You could make copies of your mesh and then just them but all that really does is create a load of information that could cause headaches. Think about it...move hundreds of points...or move 6 bones.

For the feet, I would create sliders to control the bone's rotation. Then in animation, use keyframe the sliders for, say, a toe, foot, heel, and ankle bone.

Just some thoughts...

_chris_

bobzilla

01-10-2003, 04:56 PM

Well, when I activate hyperNURBs, the figure just refreshes forever. It never seems to rest. It just flashes visible, invisible untill all the Soft IK comes to rest. And I've only done the tail!

Srek

01-10-2003, 06:14 PM

Hi,
i have to say that rigging a dinosaur is pretty ambitous for your first project with Soft IK. I strongly recommend using smaller setups to hone your skills with it.
Regards
Srek

bobzilla

01-10-2003, 07:00 PM

>>Hi,
i have to say that rigging a dinosaur is pretty ambitous for your first project with Soft IK.<<

Believe me, I agree! The pic at the top of the thread is what I'm rigging. It's my first attempt at everything...modeling, texturing, rigging, animating. Dinos are why I got into 3D. Any advice would be greatly appreciated.

kaggen

01-10-2003, 10:07 PM

Originally posted by bobzilla
>>Hi,
i have to say that rigging a dinosaur is pretty ambitous for your first project with Soft IK.<<

Believe me, I agree! The pic at the top of the thread is what I'm rigging. It's my first attempt at everything...modeling, texturing, rigging, animating. Dinos are why I got into 3D. Any advice would be greatly appreciated.

I don't know exactly what you mean with bezerk/refreshes but Soft IK is very cpu intensive with lots of calculation's going on. If you (like you say) have hypernurbs enabled there might be a lot of polys for SIK to calculate.

Try to lower the editor resolution of the hypernurb and maybe turn off gourad shading or even use wireframe to increase render speed (as renderspeed in the editor).

I don't know what hardware you use but realtime SIK calculation's require a pretty fast CPU and good graphics card.

It also depends on your SIK settings. Stiffer SIK is harder for the CPU to calculate.

Mats

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