[Opensim-dev] New MOSES Physics Video

[Mike Chase]

One thing I don’t understand with this. Why 2 scripts in each and every 
brick?  Why not simply make the bricks physical and apply an external 
force from the explosion.  Script overhead in opensim is rather high and 
this approach introduces a fair bit of script overhead in addition to 
running the physics simulation itself.

Mike

On 04/22/2015 10:23 AM, Maxwell, Douglas CIV USARMY ARL (US) wrote:
>
> The scripts that were used in the exploding wall video are now 
> available at our gitHub repo (link below).  I invite you to download 
> and test them on your servers.  If you see ways to optimize or better 
> leverage the existing physics capabilities of open sim, please feel 
> free to submit updates or discuss code changes.
>
> https://github.com/M-O-S-E-S/opensim-scripting-library/tree/master/Exploding-Wall
>
> Douglas Maxwell, MSME
> Science and Technology Manager
> Virtual World Strategic Applications
> U.S. Army Research Lab
> Human Research & Engineering Directorate
> Simulation & Training Technology Center
> (c)(407) 242-0209 <tel:%28407%29%20242-0209>
> ------------------------------------------------------------------------
> *From:* opensim-dev-bounces at opensimulator.org 
> [opensim-dev-bounces at opensimulator.org] on behalf of Michael Emory 
> Cerquoni [nebadon2025 at gmail.com]
> *Sent:* Tuesday, April 14, 2015 9:33 AM
> *To:* opensim-dev at opensimulator.org
> *Cc:* moses-list at lists.mitre.org
> *Subject:* Re: [Opensim-dev] New MOSES Physics Video
>
> Could these test scripts be shared so testing against other engines 
> can occur as well, I would be interested to see how this same test 
> goes against ODE and BulletSim as well.
>
> On Tue, Apr 14, 2015 at 8:18 AM, Maxwell, Douglas CIV USARMY ARL (US) 
> <douglas.maxwell3.civ at mail.mil <mailto:douglas.maxwell3.civ at mail.mil>> 
> wrote:
>
>     Good Morning, as you all know the MOSES developers are working on
>     PhysX integration into the Open Simulator to support functionality
>     currently not possible in the platform.  We are a methodical group
>     and a couple months ago I asked one of our interns to work with
>     the developers to create a series of baseline physics behavior
>     case studies. The first case study is a destructible wall caused
>     by an explosive charge.  This wall is composed of blocks that are
>     tested at a high density and a low density to simulate different
>     destruction effects.
>
>     The goal here is to eventually have all of the prims in the sim
>     loaded with the scripts needed to react to any type of random
>     explosive charge set by the participants in the training scenario.
>
>     The video can be found below:
>
>     https://youtu.be/jSofWcwWi7g
>
>     Your feedback is welcome.
>
>     Observations:
>
>     1)  Current limitations of the open simulator prevent us from
>     expanding the tests beyond a simple wall.
>
>     2)  The scripts exercise the engine well and expose limitations
>     between the sim frame rate and the physics frame rate.
>
>     3)  It is easy to crash the sim with this demonstration,
>     especially if more than a handful of people are present (more than
>     3-4 client connections).
>
>     Douglas Maxwell, MSME
>     Science and Technology Manager
>     Virtual World Strategic Applications
>     U.S. Army Research Lab
>     Human Research & Engineering Directorate
>     Simulation & Training Technology Center
>     (c)(407) 242-0209 <tel:%28407%29%20242-0209>
>
>     _______________________________________________
>     Opensim-dev mailing list
>     Opensim-dev at opensimulator.org <mailto:Opensim-dev at opensimulator.org>
>     http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-dev
>
>
>
>
> -- 
> Michael Emory Cerquoni
>
>
> _______________________________________________
> Opensim-dev mailing list
> Opensim-dev at opensimulator.org
> http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-dev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://opensimulator.org/pipermail/opensim-dev/attachments/20150425/81b1b44c/attachment.html>