[opensource-dev] Convexdecomposition for open source devs

[WolfPup Lowenhar]

I have recently had a conversation with someone @ LL that has said they
would be willing to help develop and OS version of llconvexdecompisition. I
even I even discussed which ones they thought was good but they have not had
the time to look at the open source version in a technical way. So what I
thought of is start a thread here that would allow the OS community both
vote and comment on the OS versions with the one most generally liked being
used and converted to be compatible to the LL mesh viewer.

 

Versions that I have found(to place your vote on this put an x next it.):

 

Bullet Physics Library(just the convexdecomp section):

Web site : http://code.google.com/p/bullet/

Votes> 

 


  John Ratcliff's:


Web Site :
http://codesuppository.blogspot.com/2009/11/convex-decomposition-library-now
.html


Votes> 


 


 


Comments for either system:


 

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Re: [opensource-dev] Convexdecomposition for open source devs

[Tateru Nino]

Knowing what their licenses are is very important. They'll need to be 
LGPL compatible, if I remember rightly.


On 31/12/2010 1:03 AM, WolfPup Lowenhar wrote:


I have recently had a conversation with someone @ LL that has said 
they would be willing to help develop and OS version of 
llconvexdecompisition. I even I even discussed which ones they thought 
was good but they have not had the time to look at the open source 
version in a technical way. So what I thought of is start a thread 
here that would allow the OS community both vote and comment on the OS 
versions with the one most generally liked being used and converted to 
be compatible to the LL mesh viewer.


Versions that I have found(to place your vote on this put an x next it.):

Bullet Physics Library(just the convexdecomp section):

Web site : http://code.google.com/p/bullet/

Votes>


  John Ratcliff's :


  Web Site :
  
http://codesuppository.blogspot.com/2009/11/convex-decomposition-library-now.html


  Votes>


  Comments for either system:



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--
Tateru Nino
http://dwellonit.taterunino.net/

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Re: [opensource-dev] Convexdecomposition for open source devs

[WolfPup Lowenhar]

That is why I put the link to the sites where the source is hosted so you
can check this and the license they are using are full GPL which is
compatible with LGPL if I remember correctly.

 

From: opensource-dev-boun...@lists.secondlife.com
[mailto:opensource-dev-boun...@lists.secondlife.com] On Behalf Of Tateru
Nino
Sent: Thursday, December 30, 2010 9:37 AM
To: opensource-dev@lists.secondlife.com
Subject: Re: [opensource-dev] Convexdecomposition for open source devs

 

Knowing what their licenses are is very important. They'll need to be LGPL
compatible, if I remember rightly.

On 31/12/2010 1:03 AM, WolfPup Lowenhar wrote: 

I have recently had a conversation with someone @ LL that has said they
would be willing to help develop and OS version of llconvexdecompisition. I
even I even discussed which ones they thought was good but they have not had
the time to look at the open source version in a technical way. So what I
thought of is start a thread here that would allow the OS community both
vote and comment on the OS versions with the one most generally liked being
used and converted to be compatible to the LL mesh viewer.

 

Versions that I have found(to place your vote on this put an x next it.):

 

Bullet Physics Library(just the convexdecomp section):

Web site : http://code.google.com/p/bullet/

Votes> 

 


 <http://codesuppository.blogspot.com/> John Ratcliff's:


Web Site :
http://codesuppository.blogspot.com/2009/11/convex-decomposition-library-now
.html


Votes> 


 


 


Comments for either system:


 

 
 
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-- 
Tateru Nino
http://dwellonit.taterunino.net/
  _  


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Re: [opensource-dev] Convexdecomposition for open source devs

[Dave Booth]

On 12/30/2010 08:03, WolfPup Lowenhar wrote:
>
> I have recently had a conversation with someone @ LL that has said 
> they would be willing to help develop and OS version of 
> llconvexdecompisition. I even I even discussed which ones they thought 
> was good but they have not had the time to look at the open source 
> version in a technical way. So what I thought of is start a thread 
> here that would allow the OS community both vote and comment on the OS 
> versions with the one most generally liked being used and converted to 
> be compatible to the LL mesh viewer.
>
> Versions that I have found(to place your vote on this put an x next it.):
>
> Bullet Physics Library(just the convexdecomp section):
>
> Web site : http://code.google.com/p/bullet/
>
> Votes>
>
>
>   John Ratcliff's :
>
>
>   Web Site :
>   
> http://codesuppository.blogspot.com/2009/11/convex-decomposition-library-now.html
>
>
>   Votes>
>
>
>   Comments for either system:
>
>

I cant exactly speak to the quality of either but the fact that Bullet 
is the physics implementation used by opensim should IMHO give that 
choice a bit of a leg up. The fact that the library is already in use as 
the phys engine on the most prevalent opensource server makes its use 
for decomp in an opensource viewer rational, just as the use of havok 
decomp in the LL-compiled viewer made sense since that physics library 
was already present in-house.
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Re: [opensource-dev] Convexdecomposition for open source devs

[Aidan Thornton]

On Thu, Dec 30, 2010 at 2:03 PM, WolfPup Lowenhar
 wrote:
> Bullet Physics Library(just the convexdecomp section):
>
> Web site : http://code.google.com/p/bullet/
>
> John Ratcliff's:
>
> Web Site :
> http://codesuppository.blogspot.com/2009/11/convex-decomposition-library-now.html

I seem to recall that the Bullet convex decomposition is actually
based on an older version of John Ratcliff's code with their own
improvements added. The two use completely different APIs, though, so
there's probably no easy way to switch between them.
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Re: [opensource-dev] Convexdecomposition for open source devs

[Dahlia Trimble]

There is an implementation of bullet in OpenSimulator but it's not as well
tested as ODE, which is the dominant engine in use. Both engines are
currently using trimesh colliders for complex prims, sculpties, and meshes
and the version of ODE included with OpenSimulator does not support convex
hull colliders.
On Dec 30, 2010 8:10 AM, "Dave Booth"  wrote:
> On 12/30/2010 08:03, WolfPup Lowenhar wrote:
>>
>> I have recently had a conversation with someone @ LL that has said
>> they would be willing to help develop and OS version of
>> llconvexdecompisition. I even I even discussed which ones they thought
>> was good but they have not had the time to look at the open source
>> version in a technical way. So what I thought of is start a thread
>> here that would allow the OS community both vote and comment on the OS
>> versions with the one most generally liked being used and converted to
>> be compatible to the LL mesh viewer.
>>
>> Versions that I have found(to place your vote on this put an x next it.):
>>
>> Bullet Physics Library(just the convexdecomp section):
>>
>> Web site : http://code.google.com/p/bullet/
>>
>> Votes>
>>
>>
>> John Ratcliff's :
>>
>>
>> Web Site :
>>
http://codesuppository.blogspot.com/2009/11/convex-decomposition-library-now.html
>>
>>
>> Votes>
>>
>>
>> Comments for either system:
>>
>>
>
> I cant exactly speak to the quality of either but the fact that Bullet
> is the physics implementation used by opensim should IMHO give that
> choice a bit of a leg up. The fact that the library is already in use as
> the phys engine on the most prevalent opensource server makes its use
> for decomp in an opensource viewer rational, just as the use of havok
> decomp in the LL-compiled viewer made sense since that physics library
> was already present in-house.
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> Policies and (un)subscribe information available here:
> http://wiki.secondlife.com/wiki/OpenSource-Dev
> Please read the policies before posting to keep unmoderated posting
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Re: [opensource-dev] Convexdecomposition for open source devs

[Argent Stonecutter]

On 2010-12-30, at 08:47, WolfPup Lowenhar wrote:
> That is why I put the link to the sites where the source is hosted so you can 
> check this and the license they are using are full GPL which is compatible 
> with LGPL if I remember correctly.

If you use a full GPL component then you have to use full GPL for the whole 
viewer, rather than the LGPL. It's better to say "the LGPL is compatible with 
the GPL" rather than the other way around.

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