Maya 2020 fundamentals - modelling the real world
Get halfway through a model and find it's an unworkable mess? Can't add edge loops where you need them? Can't subdivide a mesh properly? If any of this sounds familiar check this course out.
# 1 30-04-2006 , 05:07 PM
iron_tick's Avatar
Subscriber
Join Date: Sep 2002
Location: Chicagoland USA
Posts: 719

fur problem in maya 6

This topic is pretty much like beating a dead horse, but ill try it anyway. Just asking the question never seemed to work fo some people. However seemingly simple the answers may be, we still have lots of questions. So, i'm posting a maya file and asking that someone correct it and repost it so that we can take a look at it with the corrections. Notes will definatly help also.

the image is of three spheres a light and a plane. ( i forgot to check the normal direction of the plane so please forgive me if thats causing any argument) the three spheres are in close proximity, one plain, one with fur and the other is bright for object based lighting, the enviroment of the camera is set to high and the plane is the with incandessance up to 1 for an overabundance of illumination. the light has raytraced shadows on and my shadow brightness is reduced to help sooth the shadow contrast on the fur.

The problem: the fur isnt influenced by the final gather. No occlusion is occuring between the fur sphere and the plain sphere and no hot spot is created by the 3rd sphere on the fur object.

can someone tell me what i missed?

Attached Thumbnails

<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 2 30-04-2006 , 05:08 PM
iron_tick's Avatar
Subscriber
Join Date: Sep 2002
Location: Chicagoland USA
Posts: 719
here is the file, please repost in maya 6 compatible format. sorry its a little messy.

Attached Files
File Type: mb fur_hdri.mb (71.1 KB, 233 views)

<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 3 30-04-2006 , 11:29 PM
iron_tick's Avatar
Subscriber
Join Date: Sep 2002
Location: Chicagoland USA
Posts: 719
I've been doing some research on your project and i came up with some new workarounds. Final Gather still doesnt work but i got the occlusion to render.

Attached Thumbnails

<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 4 30-04-2006 , 11:36 PM
iron_tick's Avatar
Subscriber
Join Date: Sep 2002
Location: Chicagoland USA
Posts: 719
heres one with a light thrown in.

Attached Thumbnails

<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 5 30-04-2006 , 11:37 PM
iron_tick's Avatar
Subscriber
Join Date: Sep 2002
Location: Chicagoland USA
Posts: 719
Im still looking for a way to do this with final gather. Please help if you know how.

Please take note that the above renders are not done with final gather or GI or GI Joe


<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>

Last edited by iron_tick; 30-04-2006 at 11:45 PM.
# 6 30-04-2006 , 11:49 PM
iron_tick's Avatar
Subscriber
Join Date: Sep 2002
Location: Chicagoland USA
Posts: 719
now i add the occlusion to final gather

Attached Thumbnails

<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 7 01-05-2006 , 03:30 AM
iron_tick's Avatar
Subscriber
Join Date: Sep 2002
Location: Chicagoland USA
Posts: 719
this was a suprisingly fast render considering i read that some people are taking 4 and 5 min to get supposed similar results.

1 min 16 secs.


<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 8 07-05-2006 , 11:05 PM
bobalie's Avatar
Registered User
Join Date: Mar 2006
Location: Canada, British Columbia, Victoria
Posts: 289
hmm, sorry, I dont really understand what your talking about because I am new but I like what youve done with the fur. Its just the right amount of scraggle, although the colour makes it not look real. If it was brown it would look like fur. user added image

hope whatever it is that is bothering you will work itself out,
bobalie

# 9 09-05-2006 , 06:10 PM
iron_tick's Avatar
Subscriber
Join Date: Sep 2002
Location: Chicagoland USA
Posts: 719
bobalie,

I was talking about an event called ambient occlusion. In real life two non luminous surfaces that pass or collide with each other constrict the flow of radiant light energy causing a dark shadow between them. some 3d renderers have settings that simulate this for photorealistic effects.

in maya 6 (not sure about 7) final gather does not illuminate fur. so you may notice some trouble trying to get realistic results from furry models. to solve this you need to attach an additional occlusion shader to the fur object and adjust its setting manually. with a little research you can find the shaders on the net, or in regards to maya 7 one is built into it.

I cant wait to update.


<html><font size=2>
<font color="blue">
And after calming me down with some orange slices and some fetal spooning,
E.T. revealed to me his singular purpose.

--TOOL, 10,000 Days---

</font></pre>
</html>
# 10 09-05-2006 , 08:54 PM
MattTheMan's Avatar
Registered User
Join Date: Apr 2005
Location: Fairfield, CT
Posts: 2,436
Huh- never knew that v6 FG doesnt do fur. But, like u did, an AO pass would do the trick.

But- doesnt maya tesselate fur into polys b4 rendering? Just curious.

Anyway- instead of FG- can't use GI? I mean, FG is a re-approximation of a photon map to ensure accurate results. Without a GI photon map, I can't really tell how it does GI, possible accumulated Monte Carlo sampling??? no clue.

Anyway- wouldn't simple photon map get the same effects-

oh wait, you are going for speed. Well then you are right, AO would be the fastest.

Well the fur looks cool with AO user added image. Nice discovery!


Live the life you love, love the life you live
Posting Rules Forum Rules
You may not post new threads | You may not post replies | You may not post attachments | You may not edit your posts | BB code is On | Smilies are On | [IMG] code is On | HTML code is Off

Similar Threads