Hi Rafa, osgEarth renders each image layer in a separate texture unit and uses multi-texturing to apply them at run time. So, you can adjust each layer's appearance, visibility and blending by tweaking the texture attributes. This approach is of course limited to your available texture units. We have plans to incorporate additional techniques including run-time image compositing and multi-pass rendering.
Adding and removing sources dynamically is not something we've tried yet, though I believe the architecture will readily support it. It's on the list. I saw your post the other day about OSG Virtual Planets, and it looks impressive. I plan to take a closer look when I get a chance! Glenn Waldron : Pelican Mapping : http://pelicanmapping.com : +1.703.652.4791 On Thu, Jan 22, 2009 at 2:22 PM, Rafa Gaitan <rafa.gai...@gmail.com> wrote: > Hi Glenn, > > The work is really impressive, we have done "something similar" on OSG > Virtual Planets, but the access to geospatial data is done by Java and > gvSIG. > > Is it possible in osgEarth to change layers during runtime?. We made lots > of efforts for that in our work but with some difficulties. > > Greetz > Rafa. > > > > On Thu, Jan 22, 2009 at 5:15 PM, Glenn Waldron <gwald...@gmail.com> wrote: > >> Hi Perry, >> >> I have played with Minerva in the past but have only briefly looked at the >> source. We do have it on the list of other terrain technologies in the FAQ ( >> http://wush.net/trac/osgearth/wiki/FAQ). >> >> One major goal with osgEarth was ease of integration -- achieved by >> leveraging as much of OSG's existing terrain support as possible -- standard >> loaders, osgTerrain, and paged LODs. I think perhaps osgEarth is unique in >> this respect. >> >> >> Glenn Waldron : Pelican Mapping : http://pelicanmapping.com : >> +1.703.652.4791 >> >> >> On Thu, Jan 22, 2009 at 11:04 AM, Perry Miller <pe...@modelspace.com>wrote: >> >>> Hi Glenn, >>> >>> Nice product. The focus on dynamic terrain generation reminded me of >>> Minerva (www.minerva-gis.org). >>> >>> I'm interested in your take on how the two projects compare and >>> contrast... >>> >>> Perry >>> >>> >>> On Thu, Jan 22, 2009 at 8:19 AM, Glenn Waldron <gwald...@gmail.com> >>> wrote: >>> > Announcing osgEarth, a new open source toolkit that enables on-demand >>> > terrain generation in OpenSceneGraph applications. >>> > >>> > osgEarth brings web-based geospatial visualization to OSG. It it built >>> on >>> > the osgTerrain library, and operates in a manner similar to the >>> technology >>> > that underlies products like NASA WorldWind, Google Earth, or Microsoft >>> > Virtual Earth. >>> > >>> > With osgEarth you can generate a terrain model at run-time by >>> connecting to >>> > a wide variety of imagery and elevation data sources, including WMS, >>> TMS, >>> > Google maps, TIFF files, and more. Or extend it by writing your own >>> driver. >>> > >>> > osgEarth is LGPL. Visit the wiki to download it and give it a try! >>> > >>> > http://osgearth.org >>> > >>> > >>> > >>> > Glenn Waldron : Pelican Mapping : http://pelicanmapping.com : >>> > +1.703.652.4791 >>> > >>> > _______________________________________________ >>> > 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 mailing list >> osg-users@lists.openscenegraph.org >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> > > > -- > Rafael Gaitán Linares > Instituto de Automática e Informática Industrial http://www.ai2.upv.es > Ciudad Politécnica de la Innovación > Universidad Politécnica de Valencia > > _______________________________________________ > 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
