prepare-object-lq-file.py

"""
Imports a GLTF file, joins all meshes, and saves the blend file at the same place as the GLTF
"""

import bpy
import sys
import bmesh

argv = sys.argv
argv = argv[argv.index("--") + 1:] # get all args after "--"

gltfPath = argv[0]

bpy.ops.import_scene.gltf(filepath=gltfPath)

# Join all meshes
meshes = list(filter(lambda obj: obj.type == 'MESH', bpy.data.objects))

if len(meshes) > 1:
    with bpy.context.temp_override(active_object=meshes[0], selected_editable_objects=meshes):
        bpy.ops.object.join()

# Find the joined mesh, move it to root, and apply the transform
joinedMesh = next(filter(lambda obj: obj.type == 'MESH', bpy.data.objects))

with bpy.context.temp_override(active_object=joinedMesh, selected_objects=[joinedMesh]):
    bpy.ops.object.parent_clear(type='CLEAR_KEEP_TRANSFORM')
    #bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)

# Delete all non-meshes objects
nonMeshes = list(filter(lambda obj: obj.type != 'MESH', bpy.data.objects))

with bpy.context.temp_override(active_object=None, selected_objects=nonMeshes):
    bpy.ops.object.delete()

# Change the name of the joined mesh
joinedMesh.name = "__render_importObject"


bpy.ops.wm.save_mainfile(filepath=gltfPath.replace('.gltf', '.blend'))