Export objects in specified LAYERS to the OUTPUT folder; objects will be exported to separate files (children objects export to the same file as their parent). This function will EXCLUDE objects with specified types. Set ONLY_SELECTED to only export selected objects. Set USE_SUBFOLDERS to create a subfolder with same name as current file. Set BA…

asset-library.py

# =============================================================
# Copyright TEA DE SOUZA 2014. Free to use and
# modify, do not remove this notice.
# =============================================================
#
# Export objects in specified LAYERS to the OUTPUT folder;
# Objects will be exported to separate files.
# (Children objects export to the same file as their parent)
#
# this function will EXCLUDE objects with specified types.
# Set ONLY_SELECTED to only export selected objects.
# Set USE_SUBFOLDERS to create a subfolder with same name as
# current file.
# Set BACKUP_FILE if you want to create a backup file before 
# processing.
# 
# File name will match exported object name.
#
# =============================================================

OUTPUT          = "MY_OUTPUT_FOLDER"
LAYERS          = [0,1,2,3,4,5,6,7,8,9]
EXCLUDE         = ['LATTICE','CAMERA','LAMP','SPEAKER']
ONLY_SELECTED   = False
USE_SUBFOLDERS  = True
USE_COMPRESSION = True
BACKUP_FILE     = False

# =============================================================

import bpy
import ntpath
import os.path
from bpy.app.handlers import persistent

# =============================================================

def export(output,layers,useSelection):
    
    print("\n--------------")
    print("EXPORT OBJECTS")
    print("--------------")
    save();
    saveAs(bpy.data.filepath+".backup")
    print("REGISTER LOAD_POST HANDLER")
    print("")
    # add app handler
    bpy.app.handlers.load_post.append(export_next)
    export_next(None)

@persistent
def export_next(o):
    if len(KEYS) is 0: 
        print("ALL OBJECTS EXPORTED")
        bpy.app.handlers.load_post.remove(export_next)
        return 
    key = KEYS[0]
    KEYS.remove(key)
    print("export object: "+key)
    exportListOfObjects(MAP[key],key,USE_SUBFOLDERS)

def exportListOfObjects(list,name,useSubfolders):
    
    root = bpy.data.objects[name]
    if root.type in EXCLUDE:
        print("skip "+name+" of type "+root.type)
        revert()
        return
    print("Preparing to export "+name+".")
    for k in bpy.context.scene.objects:
        k.select = k.name not in list
    
    numObjToDelete = 0    
    for k in bpy.context.scene.objects:
        if k.select:
            numObjToDelete+=1 
            print("will delete "+k.name)
    
    precount = len(bpy.context.scene.objects)
    deleteSelectedObjects()
    postcount = len(bpy.context.scene.objects)
    if precount-postcount!=numObjToDelete:
        print("after delete still have "+str(postcount)+" objects, expected "+str(precount-numObjToDelete))
        doContinue = false
        
    path=makePath(name,useSubfolders)
    saveAs(path)
    revert()
    
def evalGroups(useSelection,layers):
    map = dict()
    for e in bpy.context.scene.objects:
        if useSelection and e.select is False:
            continue
        if not isInExportableLayer(e,layers): 
            continue
        key = rootName(e)
        if key==e.name:
            print(e.name+" is a root object.")
        else:
            print("Add "+e.name+" to "+key)
        n = e.name
        if key not in map: map[key] = []
        map[key].append(n)
    return map

def isInExportableLayer(o,layers):
    for i in layers:
        if o.layers[i]: return True
    return False

def rootName(o):
    while not (o.parent is None):
        o = o.parent
    return o.name

def baseName():
    n=ntpath.basename(bpy.data.filepath)
    return os.path.splitext(n)[0]

def makePath(name,useSubfolders):
    path = OUTPUT
    if useSubfolders: 
        path = os.path.join( path, baseName() );
    path = os.path.join(path,name+".blend")    
    return path
    
def makeNearbyPath(name,useSubfolders):
    main = bpy.data.filepath
    i = main.rfind("/")
    base = main[0:i+1]
    path = base
    if useSubfolders: path += baseName()+"/";
    path += name+".blend"    
    return path
    
def save():
    bpy.ops.wm.save_as_mainfile(compress=USE_COMPRESSION)
    
def saveAs(path):
    dir=os.path.dirname(path)
    if not os.path.exists(dir):
        print("create dir: "+dir) 
        os.makedirs(dir)
    print("save: "+path)
    bpy.ops.wm.save_as_mainfile(filepath=path, copy=True, compress=USE_COMPRESSION)
    
def revert():
    bpy.ops.wm.revert_mainfile()
    
def deleteSelectedObjects():
    showAllLayers()
    bpy.ops.object.delete()

def showAllLayers():
    sel = []
    for i in range(0,20): sel.append(True)
    bpy.context.scene.layers = sel

# =============================================================
# Main section
# =============================================================

MAP = evalGroups(ONLY_SELECTED,LAYERS)
KEYS = list(MAP.keys())

export(OUTPUT,LAYERS,ONLY_SELECTED)

# EOF =========================================================