Hi,
Erwan,
>
> Is there any chance this page exists in English?:
http://www.projet-sigle.org/spip.php?article35
Currently, no. But after triangulation API yes. Maybe in october-november.
The API will be finished in one month.
If not, perhaps you could provide a link to the source code for Chris
> and I? It would be great to build on any work that has already been
> done on TIN support by you and your team.
Yes I think so.
R1.
The Sunburned Surveyor
>
>
> On Wed, Apr 16, 2008 at 9:49 AM, Stefan Steiniger <[EMAIL PROTECTED]>
> wrote:
> > oh yes.. I forgot Erwans work on the TANATO plugin.
> >
> > http://www.projet-sigle.org/spip.php?rubrique17
> >
> > Unfortunately Erwan did not wrote who is doing the work at IRSTV
> > (http://orbisgis.cerma.archi.fr/?page_id=40)
> > I hope it is not confusing, so we need to lay out what should be
> > different (i.e. CDT 2D or 3D, independence of memory, streaming and so
> on).
> >
> > stefan
> >
> > erwan bocher wrote:
> > > Dear OpenJumper,
> > >
> > > We are working at IRSTV on a CDT api in JAVA. The api will integrate
> > > some functionalities like insert polygon with hole, node, line and
> > > skeleton refinement. It's a transposition of my thesis work in pure
> java.
> > >
> > > Feel free to send me a mail.
> > >
> > > R1.
> > >
> > >
> > > 2008/4/16, Geoffrey G Roy <[EMAIL PROTECTED]
> > > <mailto:[EMAIL PROTECTED]>>:
> >
> > >
> > > Dear SS (and others)
> > >
> > > Could you let me know ehat the status is for the use of Java 1.6 -
> has a
> > > decision been made to move OpenJump, or is it still a work in
> progress.
> > >
> > > Geoff
> > >
> > >
> > > Stefan Steiniger wrote:
> > > > Hei Christopher
> > > >
> > > > thanks for your outline :)
> > > > I actually have not that much background knowledge to evaluate
> if
> > > what
> > > > you do propose is good, but I guess you know it better. But
> > > modularity
> > > > is always a plus and documentation is sufficient. However.. a
> > > good rule
> > > > is to always start with a simple model and extend it later.
> I.e. one
> > > > could also make first all in one and then introduce modularity
> later.
> > > >
> > > > btw. Today I just stumbled across this article that has been
> > > published
> > > > this month:
> > > > "Sweep-line algorithm for constrained Delaunay triangulation"
> > > >
> > >
> http://www.informaworld.com/openurl?genre=article&issn=1365%2d8816&volume=22&issue=4&spage=449
> > > <
> http://www.informaworld.com/openurl?genre=article&issn=1365%2d8816&volume=22&issue=4&spage=449
> >
> > > >
> > > > If there is need I can send it to you. Note, that it is a 2D
> > > algorithm
> > > > (brwosing the article shortly). I actually have needs too for
> 2D
> > > CDT's..
> > > > in map generalization.
> > > >
> > > > cheers
> > > > stefan
> > > >
> > > > Christopher wrote:
> > > >
> > > >> Sorry for the radio silence, I've been a thinking
> > > >> philosopher not an eating philosopher. I can only hope
> > > >> a fork and food are there when I need them ;)
> > > >>
> > > >> I've been reading the papers of the computational
> > > >> geometry "heros" and thinking of an overall framework
> > > >> for the TIN side of things. I just got my copy of
> > > >> "Foundations of Multidimensional and Metric Data
> > > >> Structures" by Hanan Samet yesterday and it is already
> > > >> proving a valuable resource.
> > > >>
> > > >> Broadly speaking, I want to structure the TIN
> > > >> import/creation side as a serial chain. Each node in
> > > >> the stream would either gather statistics about the
> > > >> stream flowing through it, alter the input stream into
> > > >> an changed version of the current type of stream, or
> > > >> alter the input stream into a different kind of output
> > > >> stream altogether.
> > > >>
> > > >> Suppose we had defined streams of DataSource (file,
> > > >> database, WMS, etc), Geometry, Point, LineString,
> > > >> GeometryCollection, and TINface. Then we can have a
> > > >> bunch of small modules that process these streams in
> > > >> different ways that can then themselves be combined in
> > > >> different ways given the need. For instance, one
> > > >> module could take an I/O stream from a USGS NED .bif
> > > >> elevation file then output a stream of Points. Another
> > > >> module could take a stream of Points, perform a simple
> > > >> random insertion Delaunly algorithm, then output a
> > > >> stream of TINfaces. The final module down the line
> > > >> would take the TINfaces and output an instance of a
> > > >> TIN. An alternate final module could take save the TIN
> > > >> to a file or even a database.
> > > >>
> > > >> Some benefits of this structure include:
> > > >> * being able to use the same module in very different
> > > >> types of chains.
> > > >> * modules in each layer (ie you could have different
> > > >> Delaunly algorithms for PointStream -> TINface
> > > >> transition) could be easily swapped around, making
> > > >> this a great research platform.
> > > >> * by using Paul's JCSP lib, the different nodes on a
> > > >> stream could be run concurrently allowing for
> > > >> wonderful scaling on today's multi-core,
> > > >> multi-processor machines.
> > > >> * it should work equally well for a small NED data set
> > > >> imported into memory or a huge raw LIDAR DEM file
> > > >> saved into a PostGIS database.
> > > >>
> > > >> Right now, I'm reading my eyes out and trying to
> > > >> figure out what kind of streams and data structures
> > > >> will be needed to be able handle any kind of TIN
> > > >> importation tasks might be needed by anyone, anywhere,
> > > >> in any java GIS project. I also have finals going on,
> > > >> so don't expect any worknig code in the next week or
> > > >> so.
> > > >>
> > > >> As far as future funding, I'm going forward as if
> > > >> everything will go through fine and no checks will
> > > >> bounce. I'll probably still work on the project if
> > > >> something goes wrong, but the manhours will be much
> > > >> less given that I'll have to find other work for the
> > > >> summer.
> > > >>
> > > >> --Christopher
> > > >>
> > > >>
> > > >>
> > > >> --- Sunburned Surveyor <[EMAIL PROTECTED]
> > > <mailto:[EMAIL PROTECTED]>>
> > > >> wrote:
> > > >>
> > > >>
> > > >>> Paul,
> > > >>>
> > > >>> Thanks for the link on JSR-275. That looks very
> > > >>> interesting, and
> > > >>> surprisingly simple. I just skimmed through the
> > > >>> introduction of the
> > > >>> JavaWorld article, but I will read it in more detail
> > > >>> this weekend. I
> > > >>> think I can incorporate it into the code I'm already
> > > >>> working on.
> > > >>>
> > > >>> Stefan and Chris,
> > > >>>
> > > >>>
> > > >>> I explained to Chris the conditions that must be met
> > > >>> before we are
> > > >>> accepted. I think he has a good understanding of
> > > >>> these. It seemed from
> > > >>> our early e-mails that he was eager to move forward.
> > > >>> Stefan is correct
> > > >>> in that we do not have a gaurantee of acceptance or
> > > >>> payment from
> > > >>> Chris' work. He would be working as a volunteer like
> > > >>> the rest of us
> > > >>> for the time being.
> > > >>>
> > > >>> The Sunburned Surveyor
> > > >>>
> > > >>> On Fri, Apr 11, 2008 at 11:31 AM, Stefan Steiniger
> > > >>> <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:
> > > >>>
> > > >>>> Question.. is Chris accepted, i.e. will he get a
> > > >>>>
> > > >>> grant by GSofC?
> > > >>>
> > > >>>> Otherwise it is his decision to work on it or not
> > > >>>>
> > > >>>> stefan
> > > >>>>
> > > >> __________________________________________________
> > > >> Do You Yahoo!?
> > > >> Tired of spam? Yahoo! Mail has the best spam protection
> around
> > > >> http://mail.yahoo.com
> > > >>
> > > >>
> > >
> -------------------------------------------------------------------------
> > > >> This SF.net email is sponsored by the 2008 JavaOne(SM)
> Conference
> > > >> Don't miss this year's exciting event. There's still time to
> > > save $100.
> > > >> Use priority code J8TL2D2.
> > > >>
> > >
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> > > >> _______________________________________________
> > > >> Jump-pilot-devel mailing list
> > > >> Jump-pilot-devel@lists.sourceforge.net
> > > <mailto:Jump-pilot-devel@lists.sourceforge.net>
> > > >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
> > > >>
> > > >>
> > > >>
> > > >
> > > >
> > >
> -------------------------------------------------------------------------
> > > > This SF.net email is sponsored by the 2008 JavaOne(SM)
> Conference
> > > > Don't miss this year's exciting event. There's still time to
> save
> > > $100.
> > > > Use priority code J8TL2D2.
> > > >
> > >
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> > > > _______________________________________________
> > > > Jump-pilot-devel mailing list
> > > > Jump-pilot-devel@lists.sourceforge.net
> > > <mailto:Jump-pilot-devel@lists.sourceforge.net>
> > > > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
> > > >
> > > >
> > > >
> > >
> > >
> > > --
> > > Dr Geoffrey G Roy
> > > Cadplan
> > > 129 Gloster Street, Subiaco WA 6008
> > > Tel: (08) 9381 4870 Fax: (08) 9382 4459
> > > Email: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
> > > http://www.cadplan.com.au
> > >
> > >
> > >
> > >
> > >
> -------------------------------------------------------------------------
> > > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
> > > Don't miss this year's exciting event. There's still time to save
> $100.
> > > Use priority code J8TL2D2.
> > >
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> > > _______________________________________________
> > > Jump-pilot-devel mailing list
> > > Jump-pilot-devel@lists.sourceforge.net
> > > <mailto:Jump-pilot-devel@lists.sourceforge.net>
> > > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
> > >
> > >
> > >
> > >
> > > --
> > > Docteur en géographie,
> > > spécialité géomatique
> > > École Centrale de Nantes
> > > Institut de recherche en sciences et techniques de la ville
> > > http://www.irstv.cnrs.fr/
> > > http://geosysin.iict.ch/irstv-trac/wiki
> > > http://r1.bocher.free.fr
> > > http://www.projet-sigle.org
> > >
> > >
> > >
> ------------------------------------------------------------------------
> >
> > >
> > >
> -------------------------------------------------------------------------
> > > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
> > > Don't miss this year's exciting event. There's still time to save
> $100.
> > > Use priority code J8TL2D2.
> > >
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> > >
> > >
> > >
> ------------------------------------------------------------------------
> > >
> > > _______________________________________________
> > > Jump-pilot-devel mailing list
> > > Jump-pilot-devel@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
> >
> >
> -------------------------------------------------------------------------
> > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
> > Don't miss this year's exciting event. There's still time to save $100.
> > Use priority code J8TL2D2.
> >
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> > _______________________________________________
> > Jump-pilot-devel mailing list
> > Jump-pilot-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
> >
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
> Don't miss this year's exciting event. There's still time to save $100.
> Use priority code J8TL2D2.
>
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
> _______________________________________________
> Jump-pilot-devel mailing list
> Jump-pilot-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
>
--
Ingénieur de recherche
Docteur en géographie,
spécialité géomatique
École Centrale de Nantes
Institut de recherche en sciences et techniques de la ville
http://www.irstv.cnrs.fr/
http://geosysin.iict.ch/irstv-trac/wiki
http://r1.bocher.free.fr
http://www.projet-sigle.org
-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
Don't miss this year's exciting event. There's still time to save $100.
Use priority code J8TL2D2.
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
_______________________________________________
Jump-pilot-devel mailing list
Jump-pilot-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
