Blender_bevy_components_wor.../tools/gltf_auto_export/helpers_scenes.py

103 lines
4.7 KiB
Python

import bpy
from .helpers_collections import (find_layer_collection_recursive)
from .helpers import (make_empty3)
# generate a copy of a scene that replaces collection instances with empties
# alternative: copy original names before creating a new scene, & reset them
# or create empties, hide original ones, and do the same renaming trick
def generate_hollow_scene(scene, library_collections):
root_collection = scene.collection
temp_scene = bpy.data.scenes.new(name="temp_scene")
copy_root_collection = temp_scene.collection
# we set our active scene to be this one : this is needed otherwise the stand-in empties get generated in the wrong scene
bpy.context.window.scene = temp_scene
found = find_layer_collection_recursive(copy_root_collection, bpy.context.view_layer.layer_collection)
if found:
# once it's found, set the active layer collection to the one we found
bpy.context.view_layer.active_layer_collection = found
#original_names = {}
original_names = []
# copies the contents of a collection into another one while replacing library instances with empties
def copy_hollowed_collection_into(source_collection, destination_collection):
for object in source_collection.objects:
if object.instance_type == 'COLLECTION' and (object.instance_collection.name in library_collections):
collection_name = object.instance_collection.name
original_name = object.name
original_names.append(original_name)
object.name = original_name + "____bak"
empty_obj = make_empty3(original_name, object.location, object.rotation_euler, object.scale, destination_collection)
"""we inject the collection/blueprint name, as a component called 'BlueprintName', but we only do this in the empty, not the original object"""
empty_obj['BlueprintName'] = '"'+collection_name+'"'
empty_obj['SpawnHere'] = ''
for k, v in object.items():
empty_obj[k] = v
else:
destination_collection.objects.link(object)
# for every sub-collection of the source, copy its content into a new sub-collection of the destination
for collection in source_collection.children:
copy_collection = bpy.data.collections.new(collection.name + "____collection_export")
copy_hollowed_collection_into(collection, copy_collection)
destination_collection.children.link(copy_collection)
copy_hollowed_collection_into(root_collection, copy_root_collection)
# objs = bpy.data.objects
#objs.remove(objs["Cube"], do_unlink=True)
return (temp_scene, original_names)
# clear & remove "hollow scene"
def clear_hollow_scene(temp_scene, original_scene, original_names):
# reset original names
root_collection = original_scene.collection
def restore_original_names(collection):
for object in collection.objects:
if object.instance_type == 'COLLECTION':
if object.name.endswith("____bak"):
object.name = object.name.replace("____bak", "")
for child_collection in collection.children:
restore_original_names(child_collection)
restore_original_names(root_collection)
# remove empties (only needed when we go via ops ????)
root_collection = temp_scene.collection
scene_objects = [o for o in root_collection.objects]
for object in scene_objects:
if object.type == 'EMPTY':
if hasattr(object, "SpawnHere"):
bpy.data.objects.remove(object, do_unlink=True)
else:
bpy.context.scene.collection.objects.unlink(object)
#bpy.data.objects.remove(object, do_unlink=True)
bpy.data.scenes.remove(temp_scene)
# convenience utility to get lists of scenes
def get_scenes(addon_prefs):
level_scene_names= list(map(lambda scene: scene.name, getattr(addon_prefs,"main_scenes")))
library_scene_names = list(map(lambda scene: scene.name, getattr(addon_prefs,"library_scenes")))
level_scene_names = list(filter(lambda name: name in bpy.data.scenes, level_scene_names))
library_scene_names = list(filter(lambda name: name in bpy.data.scenes, library_scene_names))
level_scenes = list(map(lambda name: bpy.data.scenes[name], level_scene_names))
library_scenes = list(map(lambda name: bpy.data.scenes[name], library_scene_names))
return [level_scene_names, level_scenes, library_scene_names, library_scenes]
def is_scene_ok(self, scene):
prefs = bpy.context.preferences.addons["gltf_auto_export"].preferences
return scene.name not in prefs.main_scenes and scene.name not in prefs.library_scenes