Compresses 3D tiles (*.b3dm or *.glb) almost 5000 times using Google Draco (https://github.com/google/draco).

This tool does the following:

• Loops through all b3dm files in currrent directory, for each file do:

  • Unpack b3dm to glb file + batch table file (using b3dm unpack)

  • Run Draco compression (using gltf-pipeline)

  • Pack glb to b3dm file (using b3dm pack)

  • Remove the temporary glb file and batch file

• Loops through all glb files in currrent directory, for each file do:

  • Run Draco compression (using gltf-pipeline)

When parameter -o (outlines) is true, the tool will use --draco.compressionLevel=0 to keep the outlines of the 3D tiles.

• Input b3dm/glb will be overwritten;

• Running this tool multiple times will give an error.

$ docker build -t compressor5000 .

Run from folder where b3dms or glb files are located.

$ docker run -v $(pwd):/tiles -it compressor5000

To keep the outlines of the 3D tiles, use:

$ docker run -v $(pwd):/tiles -it compressor5000 -o true

2024-05-17: added option to keep outlines of 3D Tiles (using draco.compressionLevel=0)

2024-03-07: also compresses glb files

2023-08-21: using parallel processes

2020-05-08: Initial coding