ovt visuals

I've been trying to do some simple physics simulations using 

jit.gl.sketch, using 2 spheres rolling around, sort of simulating 2 

balls on a pool table. Can anyone point me in the right direction of 

how to figure out the trajectory of the balls after colliding with each 

other? The collision detection is easy, but I can't figure out the 

math of how to bounce them in the proper direction after colliding. 

I've looked at the 'trajectory' patch from 

http://cicm.mshparisnord.net/dl/trajectory.htm

figure out what the heck is going on, as it's a very very thick patch. 

Has anyone on the list done anything like this they'd like to share? 

I'm interested in hitting or pushing one ball, calculating it's speed 

and angle, and applying that to the collision with another object to 

calculate the new trajectories of both objects, plus I'd like to add 

some real world variables, such as mass, friction, elasticity, and 

I've been trying to do some simple physics simulations using 
jit.gl.sketch, using 2 spheres rolling around, sort of simulating 2 
balls on a pool table.  Can anyone point me in the right direction of 
how to figure out the trajectory of the balls after colliding with each 
other?  The collision detection is easy, but I can't figure out the 
math of how to bounce them in the proper direction after colliding.   
I've looked at the 'trajectory' patch from 
http://cicm.mshparisnord.net/dl/trajectory.htm  but it's difficult to 
figure out what the heck is going on, as it's a very very thick patch.  
Has anyone on the list done anything like this they'd like to share?   
I'm interested in hitting or pushing one ball, calculating it's speed 
and angle, and applying that to the collision with another object to 
calculate the new trajectories of both objects, plus I'd like to add 
some real world variables, such as mass, friction, elasticity, and 
gravity.

trajectory-collision-detection-of-multiple-objects-help

The PMPD library will be your best friend!

http://www.maxobjects.com/?v=libraries&id_library=81&

 ;requested=PMPD&operateur=AND& id_plateforme=0

Originally made for PD, these objects have been ported for max (osX & win),

but as most of help file are missing/unusable, and there are no example

patches for max/jitter (there are help patches script-converted from PD

patch. unclear and not very useful) I would really advice you to check the

PD version first, (very easy, just open the doc/example/pmpd patches) justto understand how it works, and then try to patch in max.

(there are a couple of max example in Ali Momeni (osX) max port :< 

http://www.cnmat.berkeley.edu/%7eali/share/max/pmpd/pmpd-for

http://www.cnmat.berkeley.edu/~ali/share/max/pmpd/pmpd-for-m

And I can post a couple of patches that do the kind of thing you're looking

for (spheres on a 2D pool table, with bounce, friction, attraction,.). as

soon as I will have bought a new HD, reinstalled everything and restored my

backup files. cause I had a terrible HD crash this morning!

You can have a look at this small video of a patch I made with PMPD objects:

http://mathieu.chamagne.free.fr/max/PMPD_boules_01.mov

 http://www.maxobjects.com/?v=libraries&id_library=81& ;requested=PMPD&operateur=AND& id_plateforme=0

Originally made for PD, these objects have been ported for max (osX & win),
but as most of help file are missing/unusable, and there are no example
patches for max/jitter (there are help patches script-converted from PD
patch. unclear and not very useful) I would really advice you to check the
PD version first, (very easy, just open the doc/example/pmpd patches) justto understand how it works, and then try to patch in max.

(there are a couple of max example in Ali Momeni (osX) max port :<  http://www.cnmat.berkeley.edu/%7eali/share/max/pmpd/pmpd-for -max.sit >
   http://www.cnmat.berkeley.edu/~ali/share/max/pmpd/pmpd-for-m ax.sit 

And I can post a couple of patches that do the kind of thing you're looking
for (spheres on a 2D pool table, with bounce, friction, attraction,.). as
soon as I will have bought a new HD, reinstalled everything and restored my
backup files. cause I had a terrible HD crash this morning! 

Thanks Mathieu! I was playing with that too by the way, but I wasn't 

Thanks Mathieu!  I was playing with that too by the way, but I wasn't  
sure where to begin.

Here is an example of using the great PMPD library (Physical modelling) in

max/Jitter to simulate balls on a pool table (2d environment - collision /

http://mathieu.chamagne.free.fr/max/mc.PMPD-jitter-example-1

Here is an example of using the great PMPD library (Physical modelling) in
max/Jitter to simulate balls on a pool table (2d environment - collision /
friction / gravity / attraction...)

 http://mathieu.chamagne.free.fr/max/mc.PMPD-jitter-example-1 .pat

Mathieu Chamagne
http://mathieu.chamagne.free.fr
www.maxobjects.com


I've finally had a minute to check out your patch on your site. Very 

cool!!! Can I hire you to make a patch for me? I need something 

super simple, simpler than the patch (perhaps) you've already created.

What I need is to add ability to kick a ball or 3d object around, but 

have to ability (like your patch) to add gravity, so I can use this on 

a wall too. I would like to be able to have the spheres rotate in the 

direction they are rolling too. I would also like to apply various 

textures to the balls, or use other 3d objects that are imported, which 

could be anything from light bulbs, to logos, or 3d heads. What do you 

think??? Interested? Where are you located?

I'm working on this project with Peter Nyboer-I guess he is friends 

with Ali too. My Jitter knowledge is about at a moderate skill level 

to say the least. I'm better at making the stuff look good, than 

I've finally had a minute to check out your patch on your site.  Very  
cool!!!  Can I hire you to make a patch for me?   I need something  
super simple, simpler than the patch (perhaps) you've already created.

What I need is to add ability to kick a ball or 3d object around, but  
have to ability (like your patch) to add gravity, so I can use this on  
a wall too.  I would like to be able to have the spheres rotate in the  
direction they are rolling too.  I would also like to apply various  
textures to the balls, or use other 3d objects that are imported, which  
could be anything from light bulbs, to logos, or 3d heads.  What do you  
think???  Interested?  Where are you located?

I'm working on this project with Peter Nyboer-I guess he is friends  
with Ali too.  My Jitter knowledge is about at a moderate skill level  
to say the least.  I'm better at making the stuff look good, than  
making it work properly.

I accidently posted my last message to the list instead of Matthieu 

personally, but since it's out there, anyone interested in adding to 

I accidently posted my last message to the list instead of Matthieu 
personally,  but since it's out there, anyone interested in adding to 
the project, email me!
brian@m1interactive.net

Trajectory & collision detection of multiple objects help