On 12/11/2009 3:55 PM, Torben Dannhauer wrote: > Hi, > yes, a simple rectangular region would be enough. > Does your algorithm determine the "height" of your flattend area itself by > the selected area, or do you specify a destination height and you lift/sink > your rectangular area to this level? > I'm interested in both methods. Some models are always on, so in best case > this flattening is compiled into DB to save rendering time. Additionally some > models are inserted on demand on free coordinates, so this flattening would > be great.. > Is your feature closed source or is it planned to integrate it into VPB?
Well, the code I can release now is simply the "what-elevation-should-I-put-here" callback for the loader/saver. It provides you with the location and current elevation and you can return a new elevation. but, obviously for simple rectangular regions it's easy for you to determine if you're within the rectangle and return a new elevation. In this case it would be more like your "or do you specify a destination height and you lift/sink your rectangular area to this level". I provided a .modifyterrain pseudoloader/saver a while ago, but I've had to modify it since to avoid needing changes in the core OSG. I can probably provide a new version of it shortly. At the present time, it has not been selected for inclusion in core OSG, so it will probably make its home in some sort of osgTerrainTools add-on library. The deformation library that goes with this, that actually can answer the what-elevation question given some number of area or line features and additional attributes is something I'm developing for a client of mine, and the open-ness of it is an issue not yet fully determined. If this is something your organization needs, maybe we could discuss cost-sharing on the development. > Cheers, > Torben -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com PixelSense Landsat processing now available! http://www.alphapixel.com/demos/ "There is no Truth. There is only Perception. To Perceive is to Exist." - Xen _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
