After you import an ICE Compound to the ICE Tree, right click on the
node and go to properties. You can see the version number in there. Yes
the highest versioned compound is used as well.
The rig is probably changing bone lengths instead of scaling which is
probably where you're hitting the problems.
On Tuesday, November 12, 2013 1:06:06 PM, Sergio Mucino wrote:
Hmmm... interesting. There are three DQ compounds in there. What would
appear to be a 1.0 (since it has no version number), a 2.2, and a 3.0.
There are differences internally for each compound version, and after
examining the files I've been working on, it seems we've been using
v3.0 (even though there are three DQ compounds in the folder, only one
is displayed in SI's node list, which I guess means SI will list the
one with the highest version number).
On 12/11/2013 12:09 PM, Grahame Fuller wrote:
V3.0 was added quite a while ago. Right-click on the compound in the preset
manager and choose Open Containing Folder. What's the version number on the
file name?
gray
From:[email protected]
[mailto:[email protected]] On Behalf Of Sergio Mucino
Sent: Tuesday, November 12, 2013 11:58 AM
To:[email protected]
Subject: Re: DQ Deformation compound and scaling...
I guess you're talking about SI 2014. We're on 2012, so no go for us on this
one.
Thanks! Still good to know.
[cid:[email protected]]
On 12/11/2013 11:56 AM, Grahame Fuller wrote:
Right, the shipped version 3.0 should support scaling, but it doesn't handle
animated bone length.
gray
From:[email protected]<mailto:[email protected]>
[mailto:[email protected]] On Behalf Of Ahmidou Lyazidi
Sent: Tuesday, November 12, 2013 12:42 AM
To:[email protected]<mailto:[email protected]>
Subject: Re: DQ Deformation compound and scaling...
At some point the factory compound was updated to support scaling. The current
version of the scaling compound is 3.0 which one are you using ?
-----------------------------------------------
Ahmidou Lyazidi
Director | TD | CG artist
http://vimeo.com/ahmidou/videos
http://www.cappuccino-films.com
2013/11/12 Raffaele Fragapane
<[email protected]<mailto:[email protected]><mailto:[email protected]><mailto:[email protected]>>
By default DQ doesn't consider scaling. The original paper omits it too as it's
not that common at bone anim level in games (which is what the paper focused
on).
We had the same issue with the DQ compounds when they were offered and we
tested them, so we ended up cooking our own to account for scaling. It's not
that hard to do, but it's more than just adding scaling up or downstream from
DQ unaltered.
As it's work done for Animal I can't disclose details, sorry about that, but if
it's worth anything to you to know: it's perfectly possible with no noticeable
effect on performance and not particularly hard to do.
On Tue, Nov 12, 2013 at 8:16 AM, Sergio Mucino
<[email protected]<mailto:[email protected]><mailto:[email protected]><mailto:[email protected]>>
wrote:
I have an interesting issue at hand. It seems that the shipping Dual Quaternion
Deformation ICE compound does not take into account scaling. I'm using it for
one of our rigs, and scaling down the rig scales things properly, but the
deformations on the mesh are still being calculated in a non-scaled space, it
seems (they are quite exaggerated when the rig is scaled down).
First, I thought I could try fixing it myself by multiplying the calculated
deformations by the scale factor from the rig, but that didn't work. I googled
a bit, and found a Dual Quaternion Deformations 2 compound, which seems to
support scaling. I downloaded it, but it made no difference. Taking a closer
look at it, it's doing exactly what we were doing here to fix the first
compound (taking the matrix from the mesh, inverting it, and multiplying it by
the vector coming from the skinning nodes), but it made no difference. The
deformations are still not scaling down.
I turned off the ICE tree and re-enabled my envelope (it's still there, I just
mute it when enabling the ICE tree), and the deformations are ok there (I just
need to use DQ on this mesh, that's why I'm not using the envelope), but
re-enabling the ICE DQ deformer gives me the wrong deformations.
Has anyone seen this before? Any known cures for this ailment? Thanks!
--
[cid:[email protected]]
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