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View Full Version : MD Test -- MD_MetaPlug on Saslite hair guides



Celshader
02-12-2003, 02:37 PM
Just another MD experiment:
http://www.celshader.com/gallery/md/sastest01a.mov

Matt
02-12-2003, 02:41 PM
What nice glossy hair, is that L'Oreal? Timotei? No no don't tell me it's Head 'n' Shoulders isn't it!!

:p

Nice!

Skonk
02-12-2003, 03:07 PM
Im downloading it now, it best be good or i'll cry :)

Skonk
02-12-2003, 03:09 PM
Yeh its good :)

Earl
02-12-2003, 03:17 PM
Simple, yet effective.

oxyg3n
02-12-2003, 03:50 PM
Hello Cellshader,

I really like how you did this. It really is helpful to me to see how people do things. I was wondering if you could tell us how you did the hair to make it look like individual strands. Is it just a texture with transparency?

-Jared

oxyg3n
02-12-2003, 03:55 PM
Doh,

I just noticed that you said you used saslite with hair guides. Can you explain to me what this means? I currently am not aware of what hair guides are or how they work. When ever I have tried hair with saslite my person has an afro!!

Thanks

Celshader
02-12-2003, 04:02 PM
Originally posted by oxyg3n
I was wondering if you could tell us how you did the hair to make it look like individual strands. Is it just a texture with transparency?

Nope, it's Saslite hair guides. :)

I used MD_MetaPlug to "play back" the MDD on Saslite hair guides. MetaPlug doesn't care about point order on the "playback" object; MetaPlug uses the calculation object as a lattice for the playback object.

In the image below, I have the two meshes side-by-side. I ran Motion Designer on the leftmost mesh. I then used MD_MetaPlug to play the MDD data back on the rightmost mesh, using the leftmost mesh as the "cage" ("lattice") object.

Celshader
02-12-2003, 04:10 PM
Originally posted by oxyg3n
Doh,

I just noticed that you said you used saslite with hair guides. Can you explain to me what this means? I currently am not aware of what hair guides are or how they work. When ever I have tried hair with saslite my person has an afro!!

Thanks

I had just posted the above when you posted this! Oh, well. :D

A Saslite hair guide is a chain of two-point polygons attached to a polygon with a different surface name. When you apply Saslite to the object with the hair guides, use the surface name applied to the hair guides. Then set the Particle/Line Thickness to 0 so that the two-point polys don't render, leaving the Saslite render behind.

Dave Jerrard wrote an excellent Saslite tutorial in the last chapter of LightWave Applied, version 6.5 & 7. You can also find links to Saslite tutorials here:
http://members.shaw.ca/lightwavetutorials/plugin.htm#Sasquatch

hrgiger
02-12-2003, 04:12 PM
Jennifer, that's pretty good. I haven't tried to animate hair yet but this will be useful when I do.

How does the simple mesh translate over to the hair guides? And is there a way to seperate the strands so it comes apart some and doesn't all move at once?

oxyg3n
02-12-2003, 04:19 PM
"Scratches head"

Ok I read what you wrote a few times and I understand it now. But I have another question. Is there an option to create the guide lines in saslite?

Or how is that done?

oxyg3n
02-12-2003, 04:24 PM
I just did the same thing. I posted the above when you posted your reply :p

I think i understand it now. I am going to have to experiment with it and see what I can come up with, Thanks for your explanations.

Skonk
02-12-2003, 04:39 PM
Little examples like this are sooooooooo helpfull :)
Just shows how much we need these forums.

James..

Celshader
02-13-2003, 05:29 AM
Originally posted by hrgiger
How does the simple mesh translate over to the hair guides?

Use the simple mesh for calculating the MDD file, and save out the MDD file. On the hair guide object, apply MD_MetaPlug and use this MDD file for the "MDD Filename" and the simple mesh for the "Cage Object." It will play back the MDD calculations on the hair guides, using the "Cage Object" mesh that you specified as a lattice.

In MD_MetaPlug, the Cage Object must be the same object that you used to calculate the MDD file in the first place.


Originally posted by hrgiger
And is there a way to seperate the strands so it comes apart some and doesn't all move at once?

I tried raising the "Fiber Structure" on the simple mesh from 25% to its maximum of 100%. A setting of 100% weakens all polygon edges aligned along the X and Z axes to the point where they act as though they do not exist. I got this:
http://www.celshader.com/gallery/md/sastest02a.mov

...maybe a Fiber Structure set to its maximum would give you the results you want. :)

Here's a still from the animation; the hair separates more at the ends:

anieves
02-13-2003, 07:45 AM
very cool. This come in handy in one of my animations that I'm working on now, I have to give this a try!

thanks

mattclary
02-13-2003, 12:23 PM
Way cool!

Mike_RB
02-13-2003, 03:17 PM
This method works well for other control-mesh>render mesh deformations. Like chainmail armor.

Mike

spr0g
02-13-2003, 04:54 PM
sweeet :D

Rory_L
02-13-2003, 06:42 PM
I think I know her :D

R

JVitale
02-14-2003, 12:43 AM
Sheesh Jen!...When is that MD book going to come out?....:D

I was wondering if you could repeat the same experiment but have the hair be wavy to curly instead....I'd like to see how the mesh and Sas would look...

Keep on experimenting...Catch you later...

Werner
02-14-2003, 01:03 AM
.

Werner
02-14-2003, 01:04 AM
Like I said on the cgtalk forum...Cool stuff Celshader! This is way I love the Lightwave community soooo much.

I've come to realise that Motion Designer is very powerful, but it takes a lot of testing and experimenting.

Here is a little test I did in another thread

Hair test (http://www.3dluvr.com/ziemdesign/images/extra/hair_test5.avi)

phyc249
02-14-2003, 03:02 PM
now that is impressive. I had not thought it possible to create motion in Sas Light. I will definately have to try this out.

EPYON
02-14-2003, 05:12 PM
very impressive !!

Celshader
02-15-2003, 04:49 AM
Originally posted by JVitale
I was wondering if you could repeat the same experiment but have the hair be wavy to curly instead....I'd like to see how the mesh and Sas would look...

OK:
http://www.celshader.com/gallery/md/curly02d.mov

Willax
02-15-2003, 09:52 AM
How many actual hair guides were used, and is there a chance a tutorial might be coming our way with this?

Celshader
02-15-2003, 06:07 PM
Originally posted by Willax
How many actual hair guides were used...

For the curly hair, I used 262 hair guides. For the straight hair in the earlier test, I used 360 hair guides.


Originally posted by Willax
...and is there a chance a tutorial might be coming our way with this?

We'll see. :)

phyc249
02-15-2003, 11:48 PM
are you using some kind of shortcut to make all those hairguides. an array or somekind of copy trick?

Celshader
02-16-2003, 03:39 AM
Originally posted by phyc249
are you using some kind of shortcut to make all those hairguides. an array or somekind of copy trick?

Sorta...I took the lattice object and did a Bevel with both Shift and Offset set to 0. Then I typed m to Merge all the points, and Shift-i to Unify all the redundant polygons. I deleted all of the original four-point polygons and horizontal two-point polygons, leaving the chains of vertical two-point polygons behind.

To increase the number of hair guides, I made a copy of the hair guides and rotated the copy to double the amount of hair guides. Then I selected everything, copied it, pasted it, rotated the copy, and repeated the process until I had enough hair guides.

Fasty
02-16-2003, 04:16 PM
ah metaplug! I always wondered what that was for! Thanks for shedding some light, I can see a use for motion designer now after all! :D

Mike_RB
02-16-2003, 04:36 PM
Not to hijack the thread, but here is another good use for this kind of deformer control:

http://www3.telus.net/paratrooper/chain.jpg

http://www3.telus.net/paratrooper/chain_1.jpg

http://www3.telus.net/paratrooper/chain_2.jpg

http://www3.telus.net/paratrooper/chain_3.jpg

Mike

phyc249
02-16-2003, 04:59 PM
so how did you do the chain. is it some plug-in?

Mike_RB
02-17-2003, 09:52 PM
The chain is a bunch of torus' copied and pasted next to eachother. The plugin part is the same method used for the hair guides on the 1st page of this thread.

Mike

phyc249
02-17-2003, 10:00 PM
wow! sounds like a very tedious process. you got a nice result.

oxyg3n
02-18-2003, 12:50 AM
I find this very interesting how you did this. Geez, just reading this thread has given me several new ideas to go and experiment with. Thanks for sharing!