generates octree (raster) from the used cells of GridMap in free and open source Redot 4.3
Get Redot from here: https://github.com/Redot-Engine/redot-engine
How to use:
Inside Redot project, create scene. Add GridMap node to scene. Attach octree_from_gridmap script to any node of the scene. Assign GridMap to Grid Map property of script. Adjust settings as desired.
Access octree from the octree_from_gridmap.raster property. Access octree class from octree_from_gridmap.octree.
