IRC log for #brlcad on 20170218

01:08.09 *** join/#brlcad teepee_ (~teepee@unaffiliated/teepee)
04:41.47 *** join/#brlcad kintel (~kintel@unaffiliated/kintel)
07:08.44 Stragus wonders if raytracing is a sane way to detect collisions for rigid body dynamics
07:08.59 Stragus Or as ``Erik would say, when you have a big optimized hammer... :)
07:11.07 Stragus I first thought about computing intersections between 4D solids, but that just doesn't work with angular velocity
08:55.52 *** join/#brlcad ickby_ (~stefan@x5d8441b0.dyn.telefonica.de)
09:08.10 *** join/#brlcad Caterpillar (~caterpill@unaffiliated/caterpillar)
09:49.22 *** join/#brlcad davezd (~davezd@71-83-188-23.dhcp.lnbh.ca.charter.com)
10:00.14 *** join/#brlcad gabbar1947 (uid205515@gateway/web/irccloud.com/x-xugrseklpmbkuqcc)
11:21.36 *** join/#brlcad LordOfBikes (~armin@dslb-092-074-228-098.092.074.pools.vodafone-ip.de)
12:22.20 *** join/#brlcad ickby_ (~stefan@tmo-096-246.customers.d1-online.com)
13:12.02 *** join/#brlcad Shane_mobile (~swedenhos@117.232.29.68)
13:37.59 *** join/#brlcad Shane_mobile (~swedenhos@117.227.253.90)
14:43.13 *** join/#brlcad ickby_ (~stefan@x5d8441b0.dyn.telefonica.de)
14:45.05 *** join/#brlcad Shane_K (~swedenhos@117.227.208.51)
14:47.56 starseeker Stragus: that's what our bullet integration is doing...
15:42.20 *** join/#brlcad tandoorichick (~rakshika@60.243.170.241)
16:00.35 *** join/#brlcad kintel (~kintel@unaffiliated/kintel)
17:43.02 *** join/#brlcad kintel (~kintel@unaffiliated/kintel)
18:14.36 Stragus starseeker: Oh? Cool then. I had assumed the standard technique were decomposition into convex polyhedrons then resolving nearest points by that Gilbert-Johnson-Keerthy distance checking thing
18:15.09 Stragus Which does seem fine, but I would rather avoid having to write convex polehedron decomposition code
18:17.07 Stragus From the examples I saw, Bullet appears to resolve collisions after they have already occured; the solids overlap in space, then it pushes back so that they don't. That seems terrible when you have a big pile of colliding objects
18:29.05 *** join/#brlcad tandoorichick (~rakshika@60.243.170.241)
19:29.36 *** join/#brlcad kintel (~kintel@unaffiliated/kintel)
21:08.37 *** join/#brlcad Ch3ck (~Ch3ck@105.112.32.167)
21:58.35 *** join/#brlcad davezd (~davezd@71-83-188-23.dhcp.lnbh.ca.charter.com)
23:57.27 *** join/#brlcad kintel (~kintel@unaffiliated/kintel)

Generated by irclog2html.pl Modified by Tim Riker to work with infobot.