[OSGeo-Discuss] RE: Open source TIN code?

2009-03-23 Thread Michael P. Gerlek
Following up on my post, for anyone interested: the news isn't good.


Most of the responses I got were pointers to Isenburg's and Shewchuck's work, 
such as
  http://www.cs.cmu.edu/~quake/triangle.html
and
  http://www.cs.unc.edu/~isenburg/sd/

I did know about these, and they are indeed good stuffs, but folks should be 
aware that they are *not* open source libraries.  A lot of people think their 
work is free but to the best of my knowledge it is not.  (Triangle is 
copyrighted by the author and may not be sold or included in commercial 
products without a license; Isenburg's code has the copyright assigned to him 
with no accompanying BSD-like or GPL-like assurances.)


I also was given pointers to..

  * FIST (http://www.cosy.sbg.ac.at/~held/projects/triang/triang.html), but the 
web page explicitly says FIST has not been released into the public domain 
(by which I assume they mean copyleft).

  * GRASS (http://grass.osgeo.org/grass64/manuals/html64_user/v.delaunay.html), 
which is under GPL

  * TerraLib 
(http://www.dpi.inpe.br/terralib/html/v320/html/group___math_const.html), which 
is under LGPL

  * Sexante 
(http://bezdek2009dp.googlecode.com/svn/trunk/myAlgorithmSextante/src/es/unex/sextante/vectorTools/)
 which is also GPL


Finally, Ben Discoe has a site 
(http://vterrain.org/Implementation/Libs/triangulate.html) listing a bunch of 
links that I've not yet dug into.  I'm hoping to find something in there I can 
use.


If anyone has any other suggestions, or is aware of inaccuracies in my above 
statements, pls let me know.

Thanks.

-mpg


-Original Message-
From: Michael P. Gerlek 
Sent: Monday, March 02, 2009 10:17 AM
To: 'OSGeo Discussions'
Subject: Open source TIN code?

The Community has need of BSD-licensed source code for TIN generation (in 
3-space).  It doesn't have to be really good, just good enough for some 
simple demo apps (for example, full-on Delauney support not needed).

I know there are a bunch of TIN algs out there on the net in various places, 
but I don't have much experience with any of them.  If anyone has any pointers, 
I'd appreciate it.

Thanks --

-mpg

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Re: [OSGeo-Discuss] RE: Open source TIN code?

2009-03-23 Thread Mateusz Loskot
Traian Stanev wrote:
 It's probably worth sending an email to Isenburg to ask for the
 actual licensing restrictions of his stuff. It was developed under an
 NSF grant, so he may not have much choice but to allow it to be used
 in a BSD-like way.

We have already walked [1] that way in libLAS and it wasn't easy,
a little roller coaster.

[1]
http://lists.osgeo.org/pipermail/liblas-devel/2008-October/000355.html

Best regards,
-- 
Mateusz Loskot, http://mateusz.loskot.net
Charter Member of OSGeo, http://osgeo.org
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RE: [OSGeo-Discuss] RE: Open source TIN code?

2009-03-23 Thread Michael P. Gerlek
Yeah, I have anecdotal evidence Isenburg gave the OK (Hobu noted it on the 
liblas list), but he didn't specify exactly for *what* he was okay with from 
the tools collection which makes me nervous.  If he were to say all of it, 
then we're all set (I just care about the TINner inside lasview).

Sometimes it's a pain when you try to play by the rules :-(

-mpg


-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of Mateusz Loskot
Sent: Monday, March 23, 2009 4:55 PM
To: OSGeo Discussions
Subject: Re: [OSGeo-Discuss] RE: Open source TIN code?

Traian Stanev wrote:
 It's probably worth sending an email to Isenburg to ask for the
 actual licensing restrictions of his stuff. It was developed under an
 NSF grant, so he may not have much choice but to allow it to be used
 in a BSD-like way.

We have already walked [1] that way in libLAS and it wasn't easy,
a little roller coaster.

[1]
http://lists.osgeo.org/pipermail/liblas-devel/2008-October/000355.html

Best regards,
-- 
Mateusz Loskot, http://mateusz.loskot.net
Charter Member of OSGeo, http://osgeo.org
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[OSGeo-Discuss] RE: Open source TIN code?

2009-03-02 Thread Traian Stanev

Not sure about the BSD licensing part, but here are some cool TIN triangulators 
which are open source.


This one (Streaming Delaunay) has BSD-like license, but may be overkill for 
what you need:

http://www.cs.unc.edu/~isenburg/sd/


This one (FIST) has nebulous licensing (different for commercial and 
non-commercial uses):

http://www.cosy.sbg.ac.at/~held/projects/triang/triang.html


And finally, this one is pretty good, but also has unclear licensing:

http://www.cs.cmu.edu/~quake/triangle.html



Traian




-Original Message-
From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] 
On Behalf Of Michael P. Gerlek
Sent: Monday, March 02, 2009 1:17 PM
To: 'OSGeo Discussions'
Subject: [OSGeo-Discuss] Open source TIN code?

The Community has need of BSD-licensed source code for TIN generation (in 
3-space).  It doesn't have to be really good, just good enough for some 
simple demo apps (for example, full-on Delauney support not needed).

I know there are a bunch of TIN algs out there on the net in various places, 
but I don't have much experience with any of them.  If anyone has any pointers, 
I'd appreciate it.

Thanks --

-mpg

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Re: [OSGeo-Discuss] RE: Open source TIN code?

2009-03-02 Thread Wolf Bergenheim
Again this is GPL, not BSD, but GRASS GIS has TIN support:

http://grass.osgeo.org/grass64/manuals/html64_user/v.delaunay.html

--Wolf

On 02.03.2009 20:34, Traian Stanev wrote:
 Not sure about the BSD licensing part, but here are some cool TIN 
 triangulators which are open source.
 
 
 This one (Streaming Delaunay) has BSD-like license, but may be overkill for 
 what you need:
 
 http://www.cs.unc.edu/~isenburg/sd/
 
 
 This one (FIST) has nebulous licensing (different for commercial and 
 non-commercial uses):
 
 http://www.cosy.sbg.ac.at/~held/projects/triang/triang.html
 
 
 And finally, this one is pretty good, but also has unclear licensing:
 
 http://www.cs.cmu.edu/~quake/triangle.html
 
 
 
 Traian
 
 
 
 
 -Original Message-
 From: discuss-boun...@lists.osgeo.org 
 [mailto:discuss-boun...@lists.osgeo.org] On Behalf Of Michael P. Gerlek
 Sent: Monday, March 02, 2009 1:17 PM
 To: 'OSGeo Discussions'
 Subject: [OSGeo-Discuss] Open source TIN code?
 
 The Community has need of BSD-licensed source code for TIN generation (in 
 3-space).  It doesn't have to be really good, just good enough for some 
 simple demo apps (for example, full-on Delauney support not needed).
 
 I know there are a bunch of TIN algs out there on the net in various places, 
 but I don't have much experience with any of them.  If anyone has any 
 pointers, I'd appreciate it.
 
 Thanks --
 
 -mpg
 
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:3 ) Wolf Bergenheim ( 8:

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Re: [OSGeo-Discuss] RE: Open source TIN code?

2009-03-02 Thread Lucena, Ivan
Here goes another one from TerraLib: 
http://www.dpi.inpe.br/terralib/html/v320/html/group___math_const.html

  ---Original Message---
  From: Wolf Bergenheim wolf+gr...@bergenheim.net
  Subject: Re: [OSGeo-Discuss] RE: Open source TIN code?
  Sent: Mar 02 '09 19:46
  
  Again this is GPL, not BSD, but GRASS GIS has TIN support:
  
  http://grass.osgeo.org/grass64/manuals/html64_user/v.delaunay.html
  
  --Wolf
  
  On 02.03.2009 20:34, Traian Stanev wrote:
   Not sure about the BSD licensing part, but here are some cool TIN 
 triangulators which are open source.
  
  
   This one (Streaming Delaunay) has BSD-like license, but may be overkill 
 for what you need:
  
   http://www.cs.unc.edu/~isenburg/sd/
  
  
   This one (FIST) has nebulous licensing (different for commercial and 
 non-commercial uses):
  
   http://www.cosy.sbg.ac.at/~held/projects/triang/triang.html
  
  
   And finally, this one is pretty good, but also has unclear licensing:
  
   http://www.cs.cmu.edu/~quake/triangle.html
  
  
  
   Traian
  
  
  
  
   -Original Message-
   From: discuss-boun...@lists.osgeo.org 
 [mailto:discuss-boun...@lists.osgeo.org] On Behalf Of Michael P. Gerlek
   Sent: Monday, March 02, 2009 1:17 PM
   To: 'OSGeo Discussions'
   Subject: [OSGeo-Discuss] Open source TIN code?
  
   The Community has need of BSD-licensed source code for TIN generation (in 
 3-space).  It doesn't have to be 
really good, just good enough for some simple demo apps (for example, full-on 
Delauney support not needed).
  
   I know there are a bunch of TIN algs out there on the net in various 
 places, but I don't have much experience 
with any of them.  If anyone has any pointers, I'd appreciate it.
  
   Thanks --
  
   -mpg
  
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  --
  
  :3 ) Wolf Bergenheim ( 8:
  
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