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Author Topic: bone influence vs wieght skinning  (Read 3321 times)

Stuey

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bone influence vs wieght skinning
« on: January 05, 2008, 02:55:26 am »

the two types of skinning...

could some one please claify which would be better for say skinning a hand... ive tried both and really noticed a differece but not enough to... ummm.. hmmm...

just basiclly asking whether one is favour towards a particular task such as blobs of goo( morph targets... I know just an example.)or swaying trees or stuff.

hope this is clear enough for people to understand... and hope for an answer
« Last Edit: January 05, 2008, 09:00:00 am by Stuey »
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hihosilver

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Re: bone influence vs wieght skinning
« Reply #1 on: January 05, 2008, 10:12:30 am »

If I'm not mistaken I believe the two terms are basically the same.  Are you talking about the difference between skinning with envelope weights and painted weights?
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Stuey

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Re: bone influence vs wieght skinning
« Reply #2 on: January 05, 2008, 11:10:39 am »

i am talking about which skinning approach is better suited for the use on a modeled hand. Influence Volumes (the ones surrounding the bone where u can set the inner/outer influce) or Skinning Weights (the very colourful one that when you are finished it looks like ur model's made of lego).

so im sorry if my terminology is wrong I lead very simple life (note the reference to lego).



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hihosilver

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Re: bone influence vs wieght skinning
« Reply #3 on: January 05, 2008, 09:26:48 pm »

Ah, I understand now.  I'm referring to envelope weights as what you're referring to as influence volumes; i'm also referring to painted weights as what you're referring to as skinning weights.  I don't want to come off as any type of smart alek, but I feel I should correct your terminology.  Envelop weights are the ones that form a sort of "envelope" over the mesh where you can set the inner and outer influences.  Painted weights is where you paint the geometry telling what bones to influence what.

As for what's better:  Normally I tend to use painted weights.  This is mainly because I feel I have much more control over the mesh this way, and envelope weights can be very difficult to form around a mesh sometimes.  Still, painted weights can get confusing, and envelope weights are a bit easier to use.  When using painted weights it can be difficult to paint exactly what you want when sometimes you'll accidentally paint something behind.
For a hand, I'd typically use painted weights, though others may use envelope weights.  Really I feel it's more of an opinion on what works better, though sometimes envelop weights wont work.  An example would be if you wanted a bone to influence the mouth of a character.  An envelope would be very difficult to form perfectly around the jaw, while you could easily paint what you wanted to be affected.

Those are only my views on it, I'm not sure what other people feel.  :D
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Stuey

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Re: bone influence vs wieght skinning
« Reply #4 on: January 05, 2008, 10:25:40 pm »

im used to being corrected and I'd rather have the right terms then not...

Cheers
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grepico

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Re: bone influence vs wieght skinning
« Reply #5 on: January 06, 2008, 08:20:15 pm »

I'm a complete noob so I'm not sure if I'm qualified to comment on this but in my limited experience I tried using the envelope weights and found it very tedious.  I struggled with sizing to include only the parts I wanted to move and would invariably get other parts distorting or a piece of my target part being left behind and distorting. 

Kreator then introduced me to painted weights and life has been happy for me since.  I did find that positioning of your object is important as you can "paint" through a part (when I tried to paint an arm that was hanging in front of the body the body was being painted as well).  As a result of this I had to go back and reposition the limbs extended out so the painting would go easier/quicker.  Now everything is wonderful.

Also, something to note:  From the manual and tutorials I saw I was under the impression that you "paint" the surfaces.  This does not seem to be the case, the "painting" seems to occur when you hit the points of a surface.  i.e. You can run the paint brush over the center of a triangle and nothing will happen but hit one of the corner points and *poof* you get color.

Hope that helped.
« Last Edit: January 06, 2008, 08:25:17 pm by grepico »
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