RCG Init: migration from gitlab:robossembler/framework

rcg_pipeline/utils/collection_tools.py

@@ -0,0 +1,92 @@
+#  ***** BEGIN GPL LICENSE BLOCK *****
+#
+#   Copyright (C) 2024 Ilia Kurochkin <brothermechanic@yandex.com>
+#
+#   Created by Ilia Kurochkin (brothermechanic)
+#   contact:    brothermechanic@yandex.com
+#
+#   This is free software;
+#   you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License
+#   as published by the Free Software Foundation; either version 3
+#   of the License, or (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+#  ***** END GPL LICENSE BLOCK *****
+#
+# coding: utf-8
+'''
+DESCRIPTION.
+Various collection tools.
+'''
+
+__version__ = '0.1'
+
+import bpy
+from collections import defaultdict
+
+
+def copy_objects(from_col, to_col, linked, double_lut):
+    '''Function copying objects from collection to collection.'''
+    for obj in from_col.objects:
+        double = obj.copy()
+        if not linked and obj.data:
+            double.data = double.data.copy()
+        to_col.objects.link(double)
+        double_lut[obj] = double
+    return True
+
+
+def copy_collections_recursive(collection, suffix='copy', linked=False):
+    '''Function recursive copying collection.'''
+    double_lut = defaultdict(lambda: None)
+    parent = [p for p in (bpy.data.collections[:] + [bpy.context.scene.collection])
+              if collection.name in p.children.keys()][0]
+
+    def _copy(parent, collection, suffix, linked=False):
+        '''Function copying collection.'''
+        clone_collection = bpy.data.collections.new(
+            '_'.join((collection.name, suffix))
+        )
+        copy_objects(collection, clone_collection, linked, double_lut)
+
+        for _collection in collection.children:
+            _copy(clone_collection, _collection, suffix, linked)
+
+        parent.children.link(clone_collection)
+
+    _copy(parent, collection, suffix, linked)
+    for obj, double in tuple(double_lut.items()):
+        parent = double_lut[obj.parent]
+        if parent:
+            double.parent = parent
+    return '_'.join((collection.name, suffix))
+
+
+def unlink_from_collections(obj):
+    ''' Unlinking object from all collections. '''
+    for col in bpy.data.collections:
+        if obj.name in col.objects:
+            col.objects.unlink(obj)
+    return obj
+
+
+def remove_collections_with_objects(collection=None):
+    '''Removes all collection (or given) with objects from scene '''
+    if collection:
+        for obj in collection.objects:
+            bpy.data.objects.remove(obj, do_unlink=True)
+        bpy.data.collections.remove(collection)
+    else:
+        for col in bpy.data.collections:
+            for obj in col.objects:
+                bpy.data.objects.remove(obj, do_unlink=True)
+            bpy.data.collections.remove(col)
+    return True