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Possible "good" bug with sculpties?

Chiman Fassbinder
LV CEO/Terminal Radio CEO
Join date: 3 Sep 2005
Posts: 66
07-11-2007 09:56
As we were playing with a bunch of sculptie prims to make some new items we came across something well, rather strange. As some of you know when you create a prim and use it to become a sculpted prim there is collision mesh. For those of you have no clue what i'm talking about its this. When you create an object and then select sculpted you will see that it becomes somewhat of a sphere type object. when you implement the sculpted texture the sphere is still there even though it looks like the way it should with the new code. It just gives the appearance of it being say a rounded cube.

as you stretch and modify it and you try to walk on top of it. Depending on the type you will see that you kinda hover over it as if there was a transparent object surrounding it. No big deal ya say right? can always make it so that its phantom. Well thats what we thought too. until by some fate of chance we shift copied the linkset. Then when i jumped to be on top of the invisible object to fool around. I fell to land right on top of the object. we tried this a few other times and realize the the newly created object via copy was basically taking on the shape AND the collision mesh of what it should be as if it was in RL. I'm not sure if its a flaw with the sculpted textures we got as freebies or if its just a bug entirely. All i know is it solved the issue we where having.

Now as I don't tend to post alot on the forums I'm sure someone has mentioned this but I didn't see anything. So figured i would post it anyway for anyone that didn't see it or anyone that would want to know. Granted this just could be some flaw in the texture or w/e or maybe i'm doing something wrong and found a way to make ti right. but hey, its something.

Sorry if this is not new or interesting information. I just found it to be quite odd.
Chosen Few
Alpha Channel Slave
Join date: 16 Jan 2004
Posts: 7,496
07-11-2007 11:13
That does sound odd. I'll have to play around with that and see if I can duplicate your results.

In any case, you probably realize this, but don't get too reliant on this technique just yet, at least not until we know what we're dealing with. It probably is a bug so I wouldn't expect that it will last.
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Chiman Fassbinder
LV CEO/Terminal Radio CEO
Join date: 3 Sep 2005
Posts: 66
07-11-2007 11:20
well my thought is this. Yes it may be a bug, but from every aspect i can think of, its a positive one. So one would hope that LL wouldn't "fix" it seeing it really has no negative aspect to it that i can think of. But then again we are talking about LL here.
Elinah Iredell
Registered User
Join date: 14 Aug 2006
Posts: 269
07-11-2007 11:27
From: Chiman Fassbinder
As we were playing with a bunch of sculptie prims to make some new items we came across something well, rather strange. As some of you know when you create a prim and use it to become a sculpted prim there is collision mesh. For those of you have no clue what i'm talking about its this. When you create an object and then select sculpted you will see that it becomes somewhat of a sphere type object. when you implement the sculpted texture the sphere is still there even though it looks like the way it should with the new code. It just gives the appearance of it being say a rounded cube.

as you stretch and modify it and you try to walk on top of it. Depending on the type you will see that you kinda hover over it as if there was a transparent object surrounding it. No big deal ya say right? can always make it so that its phantom. Well thats what we thought too. until by some fate of chance we shift copied the linkset. Then when i jumped to be on top of the invisible object to fool around. I fell to land right on top of the object. we tried this a few other times and realize the the newly created object via copy was basically taking on the shape AND the collision mesh of what it should be as if it was in RL. I'm not sure if its a flaw with the sculpted textures we got as freebies or if its just a bug entirely. All i know is it solved the issue we where having.

Now as I don't tend to post alot on the forums I'm sure someone has mentioned this but I didn't see anything. So figured i would post it anyway for anyone that didn't see it or anyone that would want to know. Granted this just could be some flaw in the texture or w/e or maybe i'm doing something wrong and found a way to make ti right. but hey, its something.

Sorry if this is not new or interesting information. I just found it to be quite odd.



All I know is a lot of sculpties stay in a round ball shape to me for a long long time before they finally rez their real shape. I go around sl seeing round sculptie balls everywhere...

Elinah
Chosen Few
Alpha Channel Slave
Join date: 16 Jan 2004
Posts: 7,496
07-11-2007 11:33
From: Chiman Fassbinder
it really has no negative aspect to it that i can think of.

THe negative could be excessively difficult physics calculations that could severely lag, or even crash, sims. For the particular shape you've been talking about, it might not be a problem, but what happens if, say, you make a sculpy that has parts of itself intersecting other parts? If the collision mesh is based on the surface mesh, you've not got a huge potential mess on your hands.
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Chiman Fassbinder
LV CEO/Terminal Radio CEO
Join date: 3 Sep 2005
Posts: 66
07-12-2007 07:32
well as far as we have seen on a sim pack style sim (4 sims acting as one sim) no lag increase was present. didnt' seem as if the server was working anymore then it normally does and this is after making quite a few linksets with these prims on them. (prolly about 50 or so of these sculpties) and yes you are right there is a possibility that it could cause undue stress on the sim or engines that are used in order to "create" these prims. Lets just hope thats not the case. Or if it is the case that they find a work around. I would be rather disapointed if i made a couch or somethingto that effect and had to make them all phantom cause when you get up you would get sent upstairs to the second floor or into the attic after getting up and getting pushed thru the prims that act as the "ceiling"
hurly Burleigh
Registered User
Join date: 19 Sep 2005
Posts: 167
07-12-2007 09:17
I wouldnt worry about the bug being fixed. there are bugs i have personally reported over 6 months ago that are still around so i cant see them doing anything about this one for a long time
KC Despres
Werebutterfly
Join date: 7 Apr 2007
Posts: 166
07-12-2007 16:09
I have just built a scupltie Stonehenge replica on my land and you can't walk between the stones for the reasons the OP describes above -- except for those that are far apart. I assume it is because the sculpties are still really huge spheres that intersect each other. It's only the sculptie "texture" that makes them look smaller.

I am explaining it away as a mysterious force the stones project. Yeh -whatever . . .
KC
Chiman Fassbinder
LV CEO/Terminal Radio CEO
Join date: 3 Sep 2005
Posts: 66
07-12-2007 16:14
Try shift copying the set, and try walking thru them then
Seifert Surface
Mathematician
Join date: 14 Jun 2005
Posts: 912
07-14-2007 03:15
One downside to accurate coillision detection on sculpties is that the server has to decode textures, which is a lot of work it doesn't otherwise have to do (it just tells the asset server to send you the textures usually, and never sees them itself.

Has anyone been able to duplicate this effect? (I haven't tried, I'm away from SL capable computers for a couple of weeks)
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Omei Turnbull
Registered User
Join date: 19 Jun 2005
Posts: 577
07-14-2007 20:00
From: Seifert Surface
Has anyone been able to duplicate this effect? (I haven't tried, I'm away from SL capable computers for a couple of weeks)
I tried shift-copying various sculpties, and wasn't successful in reproducing it.
Chiman Fassbinder
LV CEO/Terminal Radio CEO
Join date: 3 Sep 2005
Posts: 66
07-15-2007 11:53
dunno why but when we do it it gives the same result, not sure if its the type of sculptie or what but its giving me this glitch