Megaprims only work as hollow if dimples differ by more than 0.251
eg: 40m sphere, 95% hollow.. 0.0-0.5 path cut to create a dome.. start and end dimple are closer together than 0.251 = it is no longer hollow for collision calculations.
Is this a known issue? Has anyone seen a workaround or a jira entry?
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Megaprims ONLY hollow if dimples differ by >0.251 |
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BETLOG Hax
Geek
Join date: 22 May 2007
Posts: 91
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04-05-2008 04:46
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Poppet McGimsie
Proprietrix, WUNDERBAR
Join date: 28 Jul 2006
Posts: 197
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04-05-2008 09:47
Wow I am glad to know it is possible to even MAKE megaprims act hollow for collision calculations.
I don't completely understand when they are hollow -- can you give an example of a setting that makes them act hollow for collision calculations? |
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Darien Caldwell
Registered User
Join date: 12 Oct 2006
Posts: 3,127
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04-05-2008 13:06
Applies to all spheres, not just megaprim ones. Fix Pending.
http://jira.secondlife.com/browse/SVC-1531 _____________________
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Chosen Few
Alpha Channel Slave
Join date: 16 Jan 2004
Posts: 7,496
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04-05-2008 13:42
Aren't collisions on megaprims spotty pretty much across the board? I don't use them very often, but when I do I keep them phantom.
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BETLOG Hax
Geek
Join date: 22 May 2007
Posts: 91
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04-05-2008 17:03
can you give an example of a setting that makes them act hollow for collision calculations? As i said above... a 40m sphere.. 95% hollow... dimple it one or both ends.. so long as the dimple numbers have more than 0.251 between them it will effectively be hollow. (i generally do a 0.5 profile cut so its hemisphere and put it on the ground or a pad.. so that may also be a factor.) Darien: thanks Chosen: they are a lot better in havok4... there is still some trickery required.. and i havent tested numeous avs all walking on one at the same time, which usually results in skating... but the current collision model is MUCH better than the old one. http://www.sluniverse.com/pics/Default.aspx?Search=megaprim%20structure%20tinker |
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Chosen Few
Alpha Channel Slave
Join date: 16 Jan 2004
Posts: 7,496
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04-05-2008 17:26
Chosen: they are a lot better in havok4... there is still some trickery required.. and i havent tested numeous avs all walking on one at the same time, which usually results in skating... but the current collision model is MUCH better than the old one. http://www.sluniverse.com/pics/Default.aspx?Search=megaprim%20structure%20tinker Interesting. Thanks for the info. _____________________
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Land now available for rent in Indigo. Low rates. Quiet, low-lag mainland sim with good neighbors. IM me in-world if you're interested. |
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BETLOG Hax
Geek
Join date: 22 May 2007
Posts: 91
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04-05-2008 20:08
A bit of further testing seems to reveal that you will skate a bit the first time you walk around a megaprim structure, and your ping will rise accordingly... but after the first time it seems to remember all the calculations and not do it any more.
...not very thoroughly tested, just first impression. |