Thanks Robert for the good explanation (as always ;-) ). I was looking for the piece of the code in VPB that generates the normals, was curious about the algo. But found it in the osgUtil::SmoothingVisitor .. This one is actually generating very nice results.
Thanks again! Cheers, Nick On Thu, Nov 24, 2016 at 4:49 PM, Robert Osfield <[email protected]> wrote: > On 24 November 2016 at 14:32, Trajce Nikolov NICK > <[email protected]> wrote: > > anyone with a knowledge if VPB is generating normals for the terrain skin > > and can point me to the code snippet where these normals are being > > calculated? > > By default VirtualPlanetBuilder creates paged databases that use > osgTerrain::TerrainTile for the representation and rendering of the > individual terrain tiles. The height field component > (HeightFieldLayer) is uses an osg::HeightField internally to store all > the heights, no normals are stored. > > The normals used for rendering at created by the TerrainTechnique, if > you use the default osgTerrain::GeometryTechnhique then it'll create > an osg::Geometry with vertices, normals and texcoords to do the > rendering. If you use the DisplacementMappingTechnique then it'll be > the shaders that that will compute the normals in the vertex shader. > > Robert. > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- trajce nikolov nick
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