View Full Version : Realistic female chest vs gravity simulation? (I'm serious)
nookiegirl 08-03-2003, 11:45 AM Hello everyone!
I'm about to embark on my first female model in Cinema 4d and I really want to do this right. I already know I want to be able to animate her and have her body react realistically - whether plainly nude or underneath her clothes.
I plan to make her body using hypernurbs, but I am not sure how to go about the chest region. It's easy enough to model - but I dont want to waste time building it using one kind of geometry if I should have used another kind to achieve realistic animation.
Ideally, I want to set her up so her body, particularly her chest region, will react to gravity without my having to go and adjust every frame manually.
If anyone has good pointers on how I should proceed, what kind of geometry would be suited and most of all - how to set up the mesh dynamics for realistic gravity interaction, I would really appreciate it!
If you have links, please post them too!
FYI, I plan on making her a slightly plump girl, mostly cause we dont see a lot of those, with about c-cup chest region. This adds extra challenge than say a-cup would.
Finally, if this is totally impossible to do with cinema 4d- let me know too please.
ps. I am serious. This is not a joke post. Why model realistic breasts - if all they're gonna do is point out like silicone??
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its a good point I suppose you could tie their movement to the position of the spine or something.
like when the spine goes up and then comes down again they have a elastic reaction. and when the spine lowers as the girl bends they move and do not look plastic.
however doing something like this would require alot alot of xpresso or coffee I mean you are not gonna just be able to set this up in five minutes. However it is possible with cinema I am almost sure.
gonna take quite a bit of work. Personally I thnk H.ikeda and mdme saide could help you with this.
I don't know nearly enough Xpresso and almost no coffee to help you at all.
flyingP
08-03-2003, 05:01 PM
Soft IK! as far as the gravity question goes (at least for the rigging).
Per-Anders
08-03-2003, 05:13 PM
softik, take a look at the Meg model included with cinema for good polygon flow. just place a couple of bones going into the breast fram the back and enable them to affect only the breast itself, then use softik with them and mess around with the settings till you get a decent "jiggle simulation". shouldn't be too hard to do at all.
Shademaster
08-03-2003, 05:29 PM
I am building a little bit plumpy female character too and for adding body fat (buttocks and belly perhaps) and breasts I used 2 softIK bones that where limited to that region with Claude bonnet. It works perfect for those areas and is way easier to do than with Dynamics or anything else. I luv SoftIk.....
I'll do a new thread about this subject if I am done modelling and start rigging, I have some questions about giving your character clothing and objects that don't deform with the mesh.
:)
anobrin
08-03-2003, 06:20 PM
Ive seen Soft Ik and bone animation that can simulate "bounce"
pretty good.
but for true soft body Dynamics its best to have a Dynamic
solution or if you are desparate you could try animating
morphs by hand.
im sure there is an expresso solution but i dont use version 8+
try looking for expresso tutes there must be some around by now
here are some example of two methods i have used
in the past
( Lightwave soft body dynamics)
http://66.70.166.29/promo/fatman.mpg
(Poserpro hand animated morphs, not very realistic)
http://66.70.166.29/promo/sbae.mpg
if you go the morph route i believe there is a good tutorial
for a "fat jiggling" hippo rig in the C4D handbook by Adam Watkins
im certain you will find a workabl solution on C4DXl if you are willing to do
the hard work
Good Luck:beer:
Shademaster
08-03-2003, 06:38 PM
Problem with Dynamics is that it just doesn't work in Cinema, I have tried it before, make the breasts seperate objects and try to attach them, but it just doesn't work nicely. Soft Ik is the only solution for this because it is realtime and 1000 times easier than dynamics.
For stuff like jelly donuts and pudding Dynamics is very good, but not when that pudding is attached to a single mesh object with bones.... :shrug:
Nice examples anobrin :)
:)
That Adrian Guy
08-03-2003, 07:04 PM
Before making a certain rig, I would watch lots and lots of reference movies of the womens chest in motion.
I'm sure you'll be able to find many on CD in dorm rooms, etc.
Shademaster
08-03-2003, 07:08 PM
Yea whe should study more about this subject.....anyone got any good links with the feminine chest in motion?? :scream:
anobrin
08-03-2003, 07:29 PM
The key to realistic soft body jiggle/bounce for the female mammory region
is to time the up and Down bounce properly with more subtle left -right sway.
during motion
not an easy task
:D
thats probably why we saw no voluptuous characters in final
fantasy
they used all of thier CPU cycles on aki's hair dynamics:scream:
its in projects like this that i wish cinema would have modifiers like 3dstudio max or maya's flex modifier. for those who don't know what it is it uses local softbody-like dynamics on selected vertices or on mesh topology. it would be perfect for chest movement. but i like the softik option also. it produces a nice dramatic effect and happens in realtime. i think i am going to go try something like this. but ofcourse i'll have to go research it first...a lot..:p
brammelo
08-03-2003, 09:17 PM
danb: you can try to achieve it with TP. It doesn't have the same interface as Maya's softbodies (those are really straightforward), but it offers the same kind of functionallity - and way beyond.
Cheers,
BaRa
Shademaster
08-03-2003, 09:21 PM
danb: you can try to achieve it with TP. It doesn't have the same interface as Maya's softbodies (those are really straightforward), but it offers the same kind of functionallity - and way beyond.
Wow you can?? Never thought that would be possible, could you explain how?
Per-Anders
08-03-2003, 09:58 PM
simply download my tp softbodies examples and library object from my site http://www.peranders.com/c4d8/
yeah thats what i was thinking a possible combonation between PA's soft body's and H.ikeda's fluid things which I don't have the link to now. but should be in the tutorials or tips sections
Shademaster
08-03-2003, 11:03 PM
You are a champion mdme_sadie :)
I'll look up the tut section JII, thanks all :)
wow that's an interesting idea. thanks again mdme_sadie. i downloaded the tp softbody from the link. that effect is awesome, although i can't begin to understand how flex modifier can be accomplished with the tp softbody. but i am going to study it untill i get some clue. thanks for the tip.
flingster
08-04-2003, 04:45 PM
ages ago on the messiah site they had a video demo of the exact jiggle you mention using muscle bones i think...so must be easily do-able in c4d....but don't ask me how!
:shrug:
nookiegirl
08-04-2003, 05:45 PM
Thank you all for all the information. I have saved this thread and will definitely be refering to it once the time comes.
In the meanwhile, I think I better brush up on my soft-ik/body knowledge. :eek:
wuensch
08-05-2003, 02:25 PM
very interesting Setup.(The softbyTP).
plus it seems to calculate quite fast.
Gotta figure out how to use it for swinging secondary motion.
Looks like a nice addition to the toolbox.
BTW.: apart from TP, which is new to me:
I have set up breasts under R/ with VReels plugin Vreel-Dynamics successfully. in R8 I would definitely do it with Soft-IK.Its very easy to setup and looks quite convincing. (But the TP solution needs to be explored.)
For the one who started the thread: one hint-
when I started with characters 3 years back, i made the mistake of trying to crate an animatable semi-realistic female to learn character animation (more fun, right).
Dont.
Its among the hardest ways to learn.
Start with a simple cartoons beer-belly.
One thing i found immensely important for realistic deformation is Polgon-Flow of the model.
If the polys dont flow right, it wont animate right.
No Claude-bonnet can save you then.
And a complex realistic human figure is too complicated, to study the way deformartion works with changed setups/rigs.
3 years later, i am getting back to the eralistic female figure since the beginning of this year-- and suddenly it seems I can handle it (to a certain degree, not Finalfantasy but enough for me).
If you are through all the learning, then forgive me.
Dont want to patronize, just to save you some frustrations.
Olli
wuensch
08-05-2003, 02:28 PM
oh-- and one more:
an undressable charcter is really a pain, especially when the clothes are relatively tight.
Try to either model with clothes or to make the naked body invisible where it is not seen under the clothes to avoid spending days to figure out how to avoid skin-polys to crash through the clothes.
Olli
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