Frederic Francis (pffred++at++llogic.com)
Thu, 03 Sep 1998 15:57:21 -0400
We announced a collision detection system at SIGGRAPH this year.
It is scene graph independent and has interfaces to Performer, OpenGL
Optimizer, OpenInventor, Vega..... It performs large scale culling down
to sub-triangle intersections for any tesselated geometry, concave or convex.
It will be available for both Irix 6.5 and WinNT/98 and will be configurable
to use single or double precision floating-point resolution.
The present Lateral Collision Engine API doesn't have a direct proximity
checking call yet (although its on the short-term roadmap) but I would think
that it can be achieved easily enough with some extra bounding containers
and a few collision database queries.
If you're interested in more info, please email directly and we'll figure out
if
it can solve your problem.
Best regards,
Fred.
______________________________________________________________________________
Frederic Francis, VP Technology Email:
fred++at++laterallogic.com
Lateral Logic
Inc. Phone:
514-287-1166
999 deMaisonneuve Blvd. West, #1725 Fax:
514-287-3360
Montreal, Quebec, Canada H3A 3L4 WWW:
http://www.laterallogic.com
______________________________________________________________________________
Roy Ruddle wrote:
> Hi there,
>
> I need to do some accurate collision detection (i.e., polygon to
> polygon), luckily with small Performer databases. It seems to me that
> the pfSeg* functions can only be used to intersect lines with Performer
> geometry, and the sphere/cylinder/box/half-space volume-volume
> intersection functions are not sensitive enough for my purposes.
>
> Has anyone implemented polygon-polygon collision detection in Performer,
> or know of a neat workaround that'll allow me to exploit the features
> provided by pfSeg* etc.?
>
> Of course, I should add, my DBs contain various DCSs which complicate the
> issue, and my ultimate aim is to do proximity checking, not just collision
> detection.
>
> I hope someone can provide some suggestions!
>
> roy
>
> =======================================================================
> List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
> Submissions: info-performer++at++sgi.com
> Admin. requests: info-performer-request++at++sgi.com
Hi Roy,
We announced a collision detection system at SIGGRAPH this year.
It is scene graph independent and has interfaces to Performer, OpenGL
Optimizer, OpenInventor, Vega..... It performs large scale culling
down
to sub-triangle intersections for any tesselated geometry, concave
or convex.
It will be available for both Irix 6.5 and WinNT/98 and will be configurable
to use single or double precision floating-point resolution.
The present Lateral Collision Engine API doesn't have a direct proximity
checking call yet (although its on the short-term roadmap) but I would
think
that it can be achieved easily enough with some extra bounding containers
and a few collision database queries.
If you're interested in more info, please email directly and we'll figure
out if
it can solve your problem.
Best regards,
Fred.
______________________________________________________________________________
Frederic Francis, VP Technology
Email: fred++at++laterallogic.com
Lateral Logic Inc.
Phone: 514-287-1166
999 deMaisonneuve Blvd. West, #1725
Fax: 514-287-3360
Montreal, Quebec, Canada H3A 3L4
WWW: http://www.laterallogic.com
______________________________________________________________________________
Roy Ruddle wrote:
Hi there,I need to do some accurate collision detection (i.e., polygon to
polygon), luckily with small Performer databases. It seems to me that
the pfSeg* functions can only be used to intersect lines with Performer
geometry, and the sphere/cylinder/box/half-space volume-volume
intersection functions are not sensitive enough for my purposes.Has anyone implemented polygon-polygon collision detection in Performer,
or know of a neat workaround that'll allow me to exploit the features
provided by pfSeg* etc.?Of course, I should add, my DBs contain various DCSs which complicate the
issue, and my ultimate aim is to do proximity checking, not just collision
detection.I hope someone can provide some suggestions!
roy
=======================================================================
List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
Submissions: info-performer++at++sgi.com
Admin. requests: info-performer-request++at++sgi.com
This archive was generated by hypermail 2.0b2 on Thu Sep 03 1998 - 12:57:33 PDT