[x3d-public] Fwd: GeoSpatial Component v4 Proposal rev1

[GPU Group]

Any geospatial people on x3d-public? I;d love some comments on
proposed v4 changes
Thanks,
-Doug Sanden

http://dug9.users.sourceforge.net/web3d/temp/geospatial_june28_SRF_Convert_WalkSurface_Nav_Tile_Sys.html

1) GeoSRF renamed GeoSystemExplicit
2) Node signature for GeoSystemNode and GeoSystem
- not shown: geoNodes would have new SFNode field to take either
GeoSystem or GeoSystemExplicit
- alternate approach: GeoSystemExplicit would have a name= field, and
'register' and the current geoSystem would refer to it by name like it
does pre-defined (2007 method)
3) GeoTileSet, GeoChildTile  (aka GeoTile) node signatures
- goal: compatibility with cesium tileset, tiles
https://github.com/CesiumGS/3d-tiles/tree/master/specification
4) GeoViewpoint > navigation types added, benchmarked against
googleEarth and Cesium
- walkSurface for bathy; other variants possible, such as listing
water nodes ...
5) GeoConvert
.. given GC coords, can convert to any surface or vice versa, or
between surface coord systems, via routing / scripting

Generally: none of this is implemented in freewrl except a variant of
GeoConvert with different node signature. geo WALK, FLY have been
working for a few years, and walkSurface coded but not tested.