OpenSceneGraph

OpenSceneGraph can read directly from the GRASS database if the GRASS-GDAL plugin is installed.

Example:

  GRASSDATA=$HOME/grassdata/nc_spm_08/PERMANENT
  export GRASSDATA
  
  osgdem --xx 10 --yy 10 -t ${GRASSDATA}/cellhd/landuse96_28m \
         --xx 10 --yy 10 -d ${GRASSDATA}/cellhd/elevation \
         -l 4 -v 0.1 -o north_carolina.ive
  # you can already watch while the conversion is still running:
  osgviewer north_carolina.ive