switching from passive to active?

Become a member of the CGSociety

Connect, Share, and Learn with our Large Growing CG Art Community. It's Free!

THREAD CLOSED
 
Thread Tools Search this Thread Display Modes
Old 03 March 2010   #1
switching from passive to active?

Hi,

I'm trying to set up a simple dynamics scene. I've got a ground and 2 cubes, I've set the ground and cube1 to be Passive RB and cube2 to be Active RB. I'm dropping cube2 onto cube1 from different heights.

I remember seeing somewhere (ages ago) some way to setting cube1 to be passive until a certain force hits it and then it becomes active. Simulating that its a shelf or something solid that is attached to a wall, one which could take a small weight but not a large one.

I've googled around and can't seem to find anything on the subject. Other than just keying the active channel, but this isn't usefull in a simulation.

I've tried using springs and Nails but neither of these has a breaking threshold (plus spring bounces around all over the place).

can't anybody help me out or at least point me in the right direction?

Cheers
__________________
-Who is General Failure and why is he reading my hard disk?
 
Old 03 March 2010   #2
Hey Harrad,

You can try these two options:

1. Key the "ignore" attribute on the shelf object

2. use active/passive keys


Hope that helps,

~Ilan
__________________
my amazing tumblr
 
Old 03 March 2010   #3
if its simple objects, try ncloth (set to act like rigids), and use constraints with glue strength...

like this
Attached Files
File Type: zip zip.zip (7.8 KB, 2 views)
__________________

.

Reel - 3DInk.com
Filmography -IMDB
R&D - VIMEO

*please read- cyanbsl.blogspot.com/*

Last edited by HowardM : 03 March 2010 at 05:30 PM.
 
Old 03 March 2010   #4
Unfortunately i'm doing this in maya 2008 and so dont have nCloth... just the standard dynamics and constraints.

I remember seeing it done with expressions, where you test the speed or the collision and the first frame the object is hit it makes it active.

cheers
__________________
-Who is General Failure and why is he reading my hard disk?
 
Old 03 March 2010   #5
Thread automatically closed

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.
__________________
CGTalk Policy/Legalities
Note that as CGTalk Members, you agree to the terms and conditions of using this website.
 
Thread Closed share thread



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
CGSociety
Society of Digital Artists
www.cgsociety.org

Powered by vBulletin
Copyright 2000 - 2006,
Jelsoft Enterprises Ltd.
Minimize Ads
Forum Jump
Miscellaneous

All times are GMT. The time now is 01:46 AM.


Powered by vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.