PDA

View Full Version : I want to model a nervous cell


Tommi
01-28-2003, 06:57 PM
Argh... may I bother you with another modeling question... pew... well anyway, I'm going to bother you (hehe)... :p

Maybe I'm too impatient or too stupid to find a way on my own, but how the heck can I model a nervous cell? I have several reference pics and they look... well - like slimey goo spit on the ground.
I tried several times with a tesselated sphere, deformed it at first, then selected faces to bevel or smooth shift them out but any attempt failed (sigh) :annoyed:

I want to make a close up to loads of nervous cells. I'd like to have different ones (well, okay, that's another issue, but how to make something like this? LW slows down when the scene gets massive geometry... Is compositing a way?)

Just give me some hints for creating, cos I still want to learn modeling and the whole Lightwave stuff.... :hmm:

Many thanks in advance!


Tommi :wavey:

UserDelta
01-28-2003, 07:30 PM
the answer is magic bevel :) find it, play with it, use the numeric pad to edit it.

Tommi
01-28-2003, 07:38 PM
:love: :love:

Thanks! I'll give it a try... Is it a function somewhere hidden in Modeler (edit: I know, that this function is in Modeler... lol ... but where to find?) ?

rube
01-28-2003, 07:57 PM
there's a few tutorials on this site that should help you make your cells.

http://www.niklasindustries.com/tutorials/index.php

rube

Tommi
01-28-2003, 08:05 PM
Originally posted by rube
there's a few tutorials on this site that should help you make your cells.

http://www.niklasindustries.com/tutorials/index.php

rube


thanks rube!
But I already know this site. Niklas has only a tutorial for the creation of a virus on his site. Maybe he should add a tutorial for nervous cells :shrug:

UserDelta
01-28-2003, 08:09 PM
i think magic bevel might be in the additional panel. i forget.

policarpo
01-28-2003, 08:15 PM
tommi:

what is a "nervous cell"?

model everything in low poly and SUB-D at the end. Also use Point Clone Plus to distribute your cell bodies along different points in your scene.

have a look at these images i did last year...while not perfect...they give you an idea of what you can do with a little planning and dedication.

some are really huge...so be weary if you're on a modem.

image 1 (http://www.policarpo.net/cgi-bin/images/graphics/blog/021224-big.jpg)

image 2 (http://www.policarpo.net/cgi-bin/images/graphics/blog/021222-big.jpg)

image 3 (http://www.policarpo.net/cgi-bin/images/graphics/blog/021212-big.jpg)

image 4 (http://www.policarpo.net/cgi-bin/images/graphics/blog/021168-big.jpg)

image 5 (http://www.policarpo.net/cgi-bin/images/graphics/blog/021161-big.jpg)

image 6 (http://www.policarpo.net/cgi-bin/images/graphics/blog/021140-big.jpg)

image 7 (http://www.policarpo.net/cgi-bin/images/graphics/blog/021145-big.jpg)

Tommi
01-28-2003, 08:33 PM
Mhhm... You know, I'm no native speaker, but the 1:1 translation of "Nervenzelle" into English is "nervous cell" and I had no problems finding many sites and images for that expression. Is it wrong? Yes I know, it sounds odd - why should a cell be nervous... I'm speaking of the cells a brain consists of... :shrug:
Is there a different expression?

Tommi
01-28-2003, 08:35 PM
Aaaaaah policarpo! :D

Images four and six are the ones I'm aiming at.... so how is this kind of cell called?

UserDelta
01-28-2003, 08:41 PM
well nervous has to do with nerves which are part of the human nervous system, which is like an electrical/chemical system from the brain to the body that relays impulses. eh?

Cman
01-28-2003, 08:43 PM
It is just funny to say "nervous cell". Like a cell shaking it it's boots it is so scared! lol

Of course we understand what you mean. :)

GOOD LUCK!

Tommi
01-28-2003, 08:47 PM
Sorry, I've to chuckle and roll my eyes..

:p

policarpo
01-28-2003, 08:48 PM
cool Tommi. just wanted clarification. :)

surfacing of those was achieved through Bump Displacement Maps and regular bump maps and a Gradient Ramp in the Luminosity channel set to Incidence Angle. Do the tutorial on the NIKLAS site...it will teach you a lot about surfacing these type of organic matters. :)

UserDelta
01-28-2003, 08:51 PM
in combination with my new icon image, and that explaination.. yeah thats pretty funny :) hehe

policarpo
01-28-2003, 08:52 PM
is that jerry lewis as the Nutty Professor in your avatar User Delta?

:beer:

UserDelta
01-28-2003, 08:55 PM
hhahah, actually thats me at a friends house.

Irie
01-28-2003, 08:57 PM
UserDelta,

thank you for that, i am having a great laugh right now.

lmao

Matt

Facial Deluxe
01-28-2003, 09:46 PM
I remeber User Delta when he was a phoetus ...Hehehe

Captain
01-28-2003, 10:54 PM
This is how I did it.
Tesselated Sphere
Random Poly Selections
Mutiple Bevel Passes on those Polys
Random Point movements on those Bevel Intersections
Sub-D
Texture
Render
Took me 10 mins. (mostly texture and render LOL)

-Captain

==Spawn==
01-29-2003, 12:50 AM
hi..this is the first time i writte something on this site....so.:p

talking about this neuron (brain cell or nervous system cell)....the model that Captain posted it's pretty accurate, BUT...if somebody open a biology book and look for a neuron, he will find out that those cells in the place where the "core" is, has the shape of a star...sometimes with 4 points ,5 or 6 ...no more than that...at the end of those "arms" other philaments grow, a huge bunch of them....i have made a neuron a long time ago...but i can't upload the picture (host server problem:thumbsdow )....but i've made it like Captain....a tesselated streched (Y axis) sphere with 4 "arms" then bevel some polys and the rest it's history....

so..thats all i can say, ehmm...yes, thats all:surprised

P.S.: sorry for my sometimes unreadeable english

great LW community!:thumbsup: keep it up

UserDelta
01-29-2003, 01:11 AM
Originally posted by ==Spawn==
...if somebody open a biology book and look for a neuron, he will find out that those cells in the place where the "core" is, has the shape of a star...sometimes with 4 points ,5 or 6

http://www.nbia.nf.ca/images/Neuron.jpg
you mean like this? but i think the number of arms it shows there is only because its a 2D diagram, not accurate in 3d :)

UserDelta
01-29-2003, 01:17 AM
http://www.research.umich.edu/research_guide/research_news/brain/images/neuron.jpg
heres what a real one looks like :)
taken from
http://www.research.umich.edu/research_guide/research_news/brain/axis.html

Tommi
01-29-2003, 09:12 AM
Many thanks to all of you!
I learned a lot and also this MagicBevel is a lot of fun... :D

I will play around and make use of all of your hints! :)

Tommi
01-29-2003, 08:13 PM
Pew... I love MagicBevel and I made a (to me) pleasing approach of a jiggering nervous cell :insane:

Buuuuuuuuuuuuuut....... How can I apply a procedural bump map to fit the mesh with all its branches?? The core looks perfectly bumpy, I like it, but some of the branches (right term?!) look odd, stripey ... like wrong texture mapping... :shrug:

policarpo
01-29-2003, 09:02 PM
hrmmm...that's weird Tommi. Procedurals shouldn't stretch in weird ways...

here's a test i did to prove it. :)

http://www.policarpo.net/cgi-bin/images/graphics/blog/021227-big.jpg

UserDelta
01-29-2003, 09:05 PM
Originally posted by Tommi
some of the branches (right term?!) look odd, stripey ... like wrong texture mapping... :shrug:

maybe you need to adjust the xyz scaling on your proceedurals.

Tommi
01-29-2003, 09:10 PM
Maybe the perspective is tricking my eyes... Too bad that I postprocessed the image (After Effects, DOF, Blur)

So is that normal, as far as you can recognize anything in that blurry image? :shrug:

Here it is:

policarpo
01-29-2003, 09:12 PM
hrmmm...is the geometry flipped in those areas? it looks like a mesh error to me....

also...how large are you Procedural Maps? They may be too large....

Tommi
01-29-2003, 09:14 PM
Originally posted by UserDelta
maybe you need to adjust the xyz scaling on your proceedurals.

Mhm I think that I'd also stretch the fitting bump map on the cell itself (without branches) if I'd scale the texture... But policarpo must be right... procedurals are threedimensional... :hmm:

Tommi
01-29-2003, 09:17 PM
Originally posted by policarpo
hrmmm...is the geometry flipped in those areas? it looks like a mesh error to me....

also...how large are you Procedural Maps? They may be too large....

Stupid mine, I don't know the model's size (cannot check it, yet)
But the textures size is 1x1x1 meters. Flipped geometry :hmm:
The only thing I did is playing around with MagicBevel in front, side, top views, which made the branches align on the axisses (erm plural of axis??!) in a way, so I used the magnet tool to make it more irregular. Maybe that was my mistake and some branches are too deformed... I need to check it

Thanks!!!

policarpo
01-29-2003, 09:30 PM
my guess is that some of those troublesome branches are collapsed on themselves....this happens quite a bit when using magic Bevel...but it is easily fixed. :)

Tommi
01-29-2003, 09:33 PM
Will it be fixed with poly align?

I think that some branches are too thin - I also have troubles with anti aliasing and though I rendered 1280x1024 with AA High (AS turned off) I still needed to smooth some regions in post...
:annoyed:

policarpo
01-29-2003, 10:39 PM
i don't think the Poly Align will work for the geometry. You'll have to manually fix the overlaps if there are indeed overlaps.

Just scale the model in Layout so there is more for the camera to look at...this may fix some of the edge artifacting you're talking about.

:)

illustrativ
01-30-2003, 01:20 AM
i have done a animation of a microbe, with some HV effects added.

http://uk.geocities.com/utica_2k/froozen.avi

right click and Save As

Captain
01-30-2003, 03:22 AM
illustrativ,policarpo, and Tommi. I have a simple question, I am still learning lightwave, And i would love to know how you guys Lit your models, and illustrativ how did you texture that bad boy!

-Captain

niklas
01-30-2003, 05:29 AM
I've written a 3-part tutorial on creating an image very much like these showed here.
You can find them on CGfocus. So far part one and two are up.

http://www.cgfocus.com/ArticleDetails.cfm?ArticleID=194
http://www.cgfocus.com/ArticleDetails.cfm?ArticleID=197

I hope it can help you in some way.

schwepes
01-30-2003, 11:23 AM
this should help a bit :)

"BODY STORY2"
http://www.jackals-forge.com/bodystory.html#4
and something about rendering
http://www.jackals-forge.com/bodystory/bodytech.html

illustrativ
01-30-2003, 11:40 AM
CAPTAIN just follow niklas tutorials, he is the man behind it all. After you have done his tutorial just extend the idea and make it anyhow u want. I am still learning lightwave aswell, i am a newbie. Just do a few tutorials and when you are done do it again with a extended idea. Me trying to get into Visual Effects thats why i am playing around with HV and textures. im glad u liked my model. The lighting all comes from the Luminosity channel.If you want captain i can send u the .lwo and .lws files so u can examine it and experiment with it.

Tommi
01-30-2003, 12:56 PM
Hi Captain!

I just used Layout's stadard scene and did nothing special to the lighting conditions. But I applied a glow filter in After Effects, though it does not come out very strong...

wozzyke
01-30-2003, 02:09 PM
Here is one I recently did, I'm also a newbie but I did it for an animation and it had not too look that real like policarpo his cells. BTW they are AMAZING :bowdown:
I also did mine according to the Niklas tutorial but the one on his site, and played with it for a while.

here it is:

draconix
01-30-2003, 03:23 PM
@niklas- you're tutorials were great, can't wait for the third one!

CGTalk Moderation
01-14-2006, 07:00 AM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.