Re: [osg-users] MetaFlight loader
Hi Karl, I ended up with DART from Presagis and converted the metaflight into terrapage. Now I can have huge database runing on solid 60 Hz that Vega was not able to even display it. I wrote couple of OpenFlight processing tools to support this conversion though, and from what I experienced, there are some precision problems with connecting tiles where the projection is stored in the db header in the openflight. I used proj4 lib and looks like only Presagis Creator and Creator Terrain Studio can match these correctly, TerraVista and proj4 can not match the tiles correctly. So my approach to have huge metaflight database running in osg is half automated with custom openflight processing tools, half manual with Creator to prepare the data for DART. So I gave up now of writing the metaflight loader -Nick On Wed, Mar 17, 2010 at 1:39 PM, Trajce (Nick) Nikolov nikolov.tra...@gmail.com wrote: I am on it these days. Expect to have something in a week or so -Nick On Wed, Mar 17, 2010 at 1:38 PM, karl jones karl...@yahoo.com wrote: Hi, I would be very interested in a meta flight loader for OSG. Have you made any progress so far? ... Cheers, karl -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25753#25753 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] MetaFlight loader
Hi, I would be very interested in a meta flight loader for OSG. Have you made any progress so far? ... Cheers, karl -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25753#25753 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] MetaFlight loader
I am on it these days. Expect to have something in a week or so -Nick On Wed, Mar 17, 2010 at 1:38 PM, karl jones karl...@yahoo.com wrote: Hi, I would be very interested in a meta flight loader for OSG. Have you made any progress so far? ... Cheers, karl -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25753#25753 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] MetaFlight loader
Hi Guys, I ve been thinking more about this and I come up with an idea of having general purpose large db plugin that will use PageLOD. There are some formats around nowdays like TerraPage, OpenFlight, MetaFlight (well, this one is an xml and it works mostly with OpenFlight files). TerraPage has each lod and each tile available in the archive, and I know there are some approaches to have the similar schema with OpenFlight as well (both TerraVista and Creator Terrain Studio can export each LOD of a tile separately). So my idea is to make most of the TerraPage like handling (Robert wrote the TileMapper needed for smart mesh management in the TerraPage loader) available natively for large database management of any format. This includes proper tile management (similar to what is in in the txp loader). Another issue I discussed with Robert is memory pools for fast and small allocations. I ve done some tests and the results are promising. Things like vertices can be allocated from the pool and perhaps other objects that are heavily used. Thoughts? Nick http://www.linkedin.com/in/tnick On Sat, Dec 26, 2009 at 1:54 PM, Trajce Nikolov nikolov.tra...@gmail.comwrote: Hi Community, I started today with writing a metaflight loader. My plan is to do it like the TerraPage loader (with TileMapper, TileLoader). If you have some thoughts, hints, ideas, let me know, so I can implement them Cheers, Nick http://www.linkedin.com/in/tnick ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] MetaFlight loader
Hi Nick, I'm not familiar with MetaFlight at all so can't comment on it specifically, or the idea about making the functionality more general until I know more about what you have in mind. Are you thinking about providing an extension to osgDB/osgSim/osgTerrain that provides the framework for a 3rd party plugin to leverage to implement MetaFlight etc? Could you explain what you current class+plugin structure might look like. Cheers, Robert. On Wed, Jan 6, 2010 at 8:09 AM, Trajce Nikolov nikolov.tra...@gmail.com wrote: Hi Guys, I ve been thinking more about this and I come up with an idea of having general purpose large db plugin that will use PageLOD. There are some formats around nowdays like TerraPage, OpenFlight, MetaFlight (well, this one is an xml and it works mostly with OpenFlight files). TerraPage has each lod and each tile available in the archive, and I know there are some approaches to have the similar schema with OpenFlight as well (both TerraVista and Creator Terrain Studio can export each LOD of a tile separately). So my idea is to make most of the TerraPage like handling (Robert wrote the TileMapper needed for smart mesh management in the TerraPage loader) available natively for large database management of any format. This includes proper tile management (similar to what is in in the txp loader). Another issue I discussed with Robert is memory pools for fast and small allocations. I ve done some tests and the results are promising. Things like vertices can be allocated from the pool and perhaps other objects that are heavily used. Thoughts? Nick http://www.linkedin.com/in/tnick On Sat, Dec 26, 2009 at 1:54 PM, Trajce Nikolov nikolov.tra...@gmail.com wrote: Hi Community, I started today with writing a metaflight loader. My plan is to do it like the TerraPage loader (with TileMapper, TileLoader). If you have some thoughts, hints, ideas, let me know, so I can implement them Cheers, Nick http://www.linkedin.com/in/tnick ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] MetaFlight loader
Hi Community, I started today with writing a metaflight loader. My plan is to do it like the TerraPage loader (with TileMapper, TileLoader). If you have some thoughts, hints, ideas, let me know, so I can implement them Cheers, Nick http://www.linkedin.com/in/tnick ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
