Exporting data

The landon export command accepts the paths to multiple Blender files and exports meshes and armatures from those files to stdout, strucuted as JSON.

Currently, landon export spawns a single Blender process and then iterates through your specified files one by one, opening them in that process.

In the future we might explore allowing for splitting work between multiple Blender processes.

We'd first want to think through the best way to split up the work and we'd want to benchmark different sized workloads to see how single process vs. multi-process performed in different cases.

For the majority of workloads the single process approach should be just fine, especially if your asset pipeline has caching and only exports data from Blender files that have changed since the last time you exported data.

The export format

The CLI exported mesh and armature data to JSON.

Everything that is exported is documented in the BlenderMesh and BlenderArmature docs.

Here's a quick example that you can copy and paste to export some data from a couple of Blender files in order to get a sense of the output.

BASIC_CUBE=basic_cube.blend
BASIC_CUBE_FILE=/tmp/basic_cube.blend

# OFFLINE_BASIC_CUBE="crates/blender-export-test/src/tests/$BASIC_CUBE"
# cp $OFFLINE_BASIC_CUBE $BASIC_CUBE_FILE

ONLINE_BASIC_CUBE="https://github.com/chinedufn/landon/blob/master/crates/blender-export-test/src/tests/$BASIC_CUBE?raw=true"
curl -L $ONLINE_BASIC_CUBE > $BASIC_CUBE_FILE

SKINNED_LETTER_F=skinned_letter_f.blend
SKINNED_LETTER_F_FILE="/tmp/$SKINNED_LETTER_F"

# OFFLINE_SKINNED_LETTER_F="crates/blender-export-test/src/tests/$SKINNED_LETTER_F"
# cp $OFFLINE_SKINNED_LETTER_F $SKINNED_LETTER_F_FILE

ONLINE_SKINNED_LETTER_F="https://github.com/chinedufn/landon/blob/master/crates/blender-export-test/src/tests/$SKINNED_LETTER_F?raw=true"
curl -L $ONLINE_SKINNED_LETTER_F > $SKINNED_LETTER_F_FILE

landon export -f $BASIC_CUBE_FILE -f $SKINNED_LETTER_F_FILE

# 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Multiple Files

landon can export from any number of Blender files by repeating the -f (--file) flag.

landon export -f some-file.blend --file another-file.blend

Writing to stdout

By default the CLI writes to stdout.

landon export -f some-file.blend | grep START_MESH_JSON

Writing to a file

To write to a file simply pipe the stdout to a file.

landon export -f some-file.blend > /tmp/some-file

Blender Exporter

Exporting data

The export format

Multiple Files

Writing to stdout

Writing to a file