Bulk Import FBX

bulk_import.ps1

$override = $FALSE
$threads = 24

Get-ChildItem -Recurse *.fbx | ForEach-Object -ThrottleLimit $threads -Parallel {
  $srcDir = $_.DirectoryName
  $src = $_.FullName
  $baseName = $_.BaseName
  $dst = "$srcDir\$baseName.blend"

  if (-not $(Test-Path $dst) -or $override) {
    Write-Output "$src > $dst"
    & "D:\SteamLibrary\steamapps\common\Blender\blender.exe" -b -P bulk_import_fbx2blend.py -- "$src" "$dst"
  }
}

bulk_import_fbx2blend.py

import bpy
import glob
import os
import sys
from pathlib import Path

def cleanup():
  bpy.ops.object.select_all(action='SELECT')
  bpy.ops.object.delete(use_global=True)

def importFbx(src):
  bpy.ops.import_scene.fbx(filepath=src, axis_forward="-Z", axis_up="Y")

def findMissings(src):
  bpy.ops.file.find_missing_files(directory=os.path.dirname(src))

def optimize(src):
  o = [o for o in bpy.data.objects if o.type == 'MESH'][0]
  o.select_set(True)
  bpy.context.view_layer.objects.active = o
  bpy.ops.object.select_all(action='SELECT')
  bpy.ops.object.join()
  bpy.ops.object.select_all(action='DESELECT')

  o = [o for o in bpy.data.objects if o.type == 'MESH'][0]
  o.select_set(True)
  o.data.use_auto_smooth = True

  bpy.ops.object.mode_set(mode='EDIT')
  bpy.ops.mesh.select_all(action='SELECT')
  bpy.ops.mesh.remove_doubles(threshold=0.1)
  bpy.ops.object.mode_set(mode='OBJECT')
  bpy.ops.object.parent_clear(type='CLEAR_KEEP_TRANSFORM')
  [bpy.data.objects.remove(o) for o in bpy.data.objects if o.type == 'EMPTY']

def save(dst):
  bpy.ops.file.pack_all()
  bpy.ops.wm.save_as_mainfile(filepath=dst, check_existing=False)

def bulk_import():
  argv = sys.argv[sys.argv.index("--") + 1:]
  src = argv[0]
  dst = argv[1]

  #dst = bpy.data.filepath
  #src = str(Path(dst).with_suffix('.fbx'))

  print("Cleanup")
  cleanup()
  print("Import FBX")
  importFbx(src)
  print("Find Missings")
  findMissings(src)
  print("Optimize")
  optimize(src)
  print("Save")
  save(dst)

bulk_import()

bulk_rename.ps1

$threads = 24

Get-ChildItem -Recurse *.blend | ForEach-Object -ThrottleLimit $threads -Parallel {
  Write-Output $_.FullName
  & "D:\SteamLibrary\steamapps\common\Blender\blender.exe" -b $_.FullName -P bulk_rename.py
}

bulk_rename.py

import bpy
from pathlib import Path

def rename():
  name = Path(bpy.data.filepath).stem
  print(name)

  for o in bpy.data.objects:
    print("Rename: " + o.name)
    o.name = name
    o.data.name = name

  bpy.ops.wm.save_mainfile(filepath=bpy.data.filepath)
  print("!!Renamed!!")

rename()

op_decimate.py

import bpy
import sys
import os

print("Initializing")
argv = sys.argv[sys.argv.index("--") + 1:]
ratio = float(argv[0])
dst = argv[1]

print("Prepareing")
bpy.ops.object.mode_set(mode='OBJECT')
bpy.ops.object.select_all(action='DESELECT')
o = [o for o in bpy.data.objects if o.type == 'MESH'][0]
bpy.context.view_layer.objects.active = o
bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.mesh.select_all(action='SELECT')

print("Decimating")
bpy.ops.mesh.decimate(ratio=ratio)

print("Cleanup")
bpy.ops.object.mode_set(mode='OBJECT')

print("Saving")
filepath=dst
bpy.ops.wm.save_as_mainfile(filepath=filepath)
print("Done")

op_merge.py

import bpy
import os
import sys
from pathlib import Path
from glob import glob

def append(file):
  with bpy.data.libraries.load(file) as (data_from, data_to):
    data_to.objects = data_from.objects
  for o in data_to.objects:
    bpy.context.collection.objects.link(o)

argv = sys.argv[sys.argv.index("--") + 1:]
dst = argv[0]
patterns = argv[1:]

bpy.ops.object.select_all(action='SELECT')
bpy.ops.object.delete()

for pattern in patterns:
  for file in glob(pattern, recursive=True):
    print(file)
    append(file)

bpy.ops.wm.save_as_mainfile(filepath=dst)

op_unwrap.py

import bpy

print('Prepare')
bpy.ops.object.mode_set(mode='OBJECT')
bpy.ops.object.select_all(action='DESELECT')
o = [o for o in bpy.data.objects if o.type == 'MESH'][0]
bpy.context.view_layer.objects.active = o
o.select_set(True)

if ('Lightmap' not in o.data.uv_layers):
  print('Createing Lightmap Layer')
  o.data.uv_layers.new(name='Lightmap')
o.data.uv_layers.active = o.data.uv_layers['Lightmap']

bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.mesh.select_all(action='SELECT')

if ('dem' in o.name):
  print('Unwrapping')
  bpy.ops.uv.unwrap()
else:
  print('Packing')
  bpy.ops.uv.lightmap_pack()

bpy.ops.object.mode_set(mode='OBJECT')
o.data.uv_layers.active = o.data.uv_layers[0]
print('Saving')
bpy.ops.wm.save_mainfile()
print('Done')

un7zip.ps1

# mkdir bird
# mkdir dem
# mkdir LOD1
# mkdir LOD2
Get-ChildItem *.zip -Recurse | ForEach-Object { & 'C:\Program Files\7-Zip\7z.exe' x $_.FullName "-o$($_.BaseName)" }