Introduction to Maya - Rendering in Arnold
This course will look at the fundamentals of rendering in Arnold. We'll go through the different light types available, cameras, shaders, Arnold's render settings and finally how to split an image into render passes (AOV's), before we then reassemble it i
# 1 29-07-2010 , 02:56 AM
Perfecto's Avatar
Registered User
Join Date: Mar 2007
Location: TN (USA)
Posts: 1,889

Penetration of rigid bodies

I'm having trouble with rigid bodies penetrating each other...specifically the active bodies penetrating my ground plane which is passive body. I have some boulders falling from a cliff and destroying a bridge but it's always causing penetration issues. Right now, I'm just blocking out the animation so all the geometry is stand-ins. If I'm having this much problems right now, I can't imagine what it's going to be like with the regular geometry.

Is there a way to prevent this issue or at least minimize it?

In the screenshot, the boulder hit's the rails and and pieces get bent and separated, etc. The pieces that fall, which isn't much right now, seem to always penetrate the ground. The big boulder is the only thing that doesn't seem to cause problems

Attached Thumbnails

Don't be satisfied with what you can do but rather strive to do the things you can't do!
Exceed Expectations!
# 2 29-07-2010 , 07:58 AM
daverave's Avatar
The thin red line
Join Date: Aug 2009
Location: England
Posts: 4,472
Have you tried increasing the tassilation on the small parts, i think that is what they do in ncloth................dave




Avatar Challenge Winner 2010
# 3 29-07-2010 , 12:47 PM
honestdom's Avatar
The Nurb Herd
Join Date: Oct 2007
Location: London
Posts: 2,381

Originally posted by daverave
tassilation

lol
user added image


how about the geoconnector node on the small pieces. increase that.

# 4 29-07-2010 , 07:57 PM
Perfecto's Avatar
Registered User
Join Date: Mar 2007
Location: TN (USA)
Posts: 1,889
rofl.

Well, I tried increasing the tassilation user added image and divisions, etc but it didn't have any effect.

I'll try the geoconnector node thingy.


Don't be satisfied with what you can do but rather strive to do the things you can't do!
Exceed Expectations!
# 5 29-07-2010 , 08:01 PM
Perfecto's Avatar
Registered User
Join Date: Mar 2007
Location: TN (USA)
Posts: 1,889
I don't see anything in the hypergraph about geoconnector node, can you be more specific? What do I need to increase?


Don't be satisfied with what you can do but rather strive to do the things you can't do!
Exceed Expectations!
# 6 29-07-2010 , 08:49 PM
honestdom's Avatar
The Nurb Herd
Join Date: Oct 2007
Location: London
Posts: 2,381
sorry, i believe i'm getting confused with particle collisions.

collision tolerance on the rigid solver might be what you are after.


Last edited by honestdom; 29-07-2010 at 08:51 PM.
# 7 22-08-2010 , 10:29 PM
G-Man's Avatar
Subscriber
Join Date: May 2004
Location: Bowling Green. Kentucky U.S.A.
Posts: 810
Might ber a bit late in reply here Perfecto.
The first thing i would try though, is making sure all normals are set in the right direction, collisions are based upon normal direction and if one normal is pointed the wrong direction it can cause penetration issues like this.

Also when you get ready to do this with your hero models, you can actually use Sdandin geometry for the collisions so that the calculations will run much faster, and still get the same effect.

g-man


Follow My Business
On The Web!
Or
On Facebook!
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