Filip, osg::CoordinateSystemNode does not do any transformation. It is really just a container to hold information about the spatial reference of the data underneath. Furthermore, no, a 4x4 matrix not sufficient for geospatial reprojection. You will need to use the PROJ library for that.
FYI, in the osgEarth project there is a SpatialReference class that encapsulates PROJ transforms, so you might take a look at that. Good luck! Glenn Waldron On Wed, Apr 6, 2016 at 11:07 AM, Filip Arlet <[email protected]> wrote: > Hi, > > I'm working on a project for displaying geospatial data. I usually have > data in some coordinate reference system. What I want now is transform them > into another coordinate reference system (wgs84). Its not a big problem > transforming coordinates on load or preparing data, but I would like to do > it on the fly. Ie. keep data in one coordinate system and transfrom them to > another. I found osg::CoordinateSystemNode but I cannot find any examples > how to use it. Its CoordinateSystemNode class that I'm looking for? How to > setup its params (preferably using Proj or GDAL or SRID) ? > > The transformation doesnt really have to be precise (I can always tranfer > all data from one coordinate system to another if I want to publish data in > different CRS, but supporting two coordinate reference systems at once > would need to have data loaded twice). > > Is this even possible ? I mean transforming coordinate systems using 4x4 > matrix ? > > Thank you! > > Cheers, > Filip > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=66748#66748 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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