Добавлен импорт иерархии объектов из FreeCAD в Blender

.gitignore

@@ -107,4 +107,7 @@ install_plugin_cad.sh
 
 # emacs backup files
 ~*
+*~
 *#
+.#*
+\#*\#

cg/blender/import_fcstd/import_cad_objects.py

@@ -11,6 +11,7 @@
 # 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.
+__version__ = "0.2"
 import time
 import FreeCAD
 import logging
@@ -22,6 +23,7 @@ import os
 import bpy
 from bpy_extras.node_shader_utils import PrincipledBSDFWrapper
 from import_fcstd.handler import FreeCAD_xml_handler
+from import_fcstd.import_hierarchy import import_hierarchy
 from import_fcstd.materials import set_fem_mat
 from import_fcstd.is_object_solid import is_object_solid
 
@@ -236,11 +238,16 @@ def obj_importer(filename,
                         bobj.rotation_quaternion = (q)
                         bobj.rotation_mode = m
                     bobj.scale = (scale, scale, scale)
-                if obj.Name in guidata:
-                    # !!!
-                    # one material for the whole object
-                    for fem_mat in doc.Objects:
-                        set_fem_mat(obj, bobj, fem_mat)
+
+            if obj.Name in guidata:
+                # !!!
+                # one material for the whole object
+                for fem_mat in doc.Objects:
+                    set_fem_mat(obj, bobj, fem_mat)
+
+            obj_parent = obj.getParentGeoFeatureGroup()
+            if obj_parent:
+                import_hierarchy(obj, bobj, scale)
 
             fcstd_collection.objects.link(bobj)
             if select:

cg/blender/import_fcstd/import_hierarchy.py

@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2023 Ilia Kurochkin <brothermechanic@gmail.com>
+#
+# This program 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.
+# DESCRIPTION.
+# Collecting all parents and reconstruct this hierarhy in bledner.
+import logging
+import bpy
+
+logger = logging.getLogger(__name__)
+logging.basicConfig(level=logging.INFO)
+
+
+def import_hierarchy(fc_obj, b_obj, scale):
+    """FreeCAD object, Blender object, scene scale"""
+    obj_parent = fc_obj.getParentGeoFeatureGroup()
+    obj_child_name = None
+    while obj_parent:
+        if bpy.context.scene.objects.get(obj_parent.Label):
+            empty = bpy.data.objects[obj_parent.Label]
+        else:
+            bpy.ops.object.empty_add(
+                type='CUBE', radius=0.01, align='WORLD',
+                location=(0, 0, 0), rotation=(0, 0, 0))
+            empty = bpy.data.objects['Empty']
+            empty.name = obj_parent.Label
+            placement = obj_parent.Placement
+            empty.location = placement.Base.multiply(scale)
+            rm = empty.rotation_mode
+            if placement.Rotation.Angle:
+                empty.rotation_mode = 'QUATERNION'
+                q = (placement.Rotation.Q[3],)+placement.Rotation.Q[:3]
+                empty.rotation_quaternion = (q)
+                empty.rotation_mode = rm
+        if b_obj.parent:
+            bpy.data.objects[obj_child_name].parent = empty
+        else:
+            b_obj.parent = empty
+        obj_child_name = obj_parent.Label
+        obj_parent = obj_parent.getParentGeoFeatureGroup()
+        empty.select_set(False)
+        logger.debug('Add parent %s to object %s', empty.name, b_obj.name)

cg/blender/import_fcstd/is_object_solid.py

@@ -24,10 +24,4 @@ def is_object_solid(obj):
     if not hasattr(obj, 'Shape'):
         return False
 
-    if not hasattr(obj.Shape, 'Solids'):
-        return False
-
-    if len(obj.Shape.Solids) == 0:
-        return False
-
-    return True
+    return obj.Shape.isClosed()

cg/blender/remesh/__init__.py

@@ -19,10 +19,13 @@ logging.basicConfig(level=logging.INFO)
 def asset_setup(transforms=True, sharpness=True, shading=True):
     """ asset setup pipeline """
     for ob in bpy.context.scene.objects:
-        #deselect all but just one object and make it active
+        if not ob.type == 'MESH':
+            continue
         bpy.ops.object.select_all(action='DESELECT')
         ob.select_set(state=True)
         bpy.context.view_layer.objects.active = ob
+        # apply scale
+        apply_transforms(ob, location=False, rotation=False, scale=True)
 
         if transforms:
             # remove doubles

cg/pipeline/freecad_to_asset.py

@@ -37,16 +37,6 @@ def freecad_asset_pipeline(fcstd_path,
     cleanup_orphan_data()
     obj_importer(fcstd_path, tessellation)
 
-    # apply scale to all objects
-    obs = bpy.context.selected_objects
-    for ob in obs:
-        bpy.ops.object.select_all(action='DESELECT')
-        ob.select_set(state=True)
-        bpy.context.view_layer.objects.active = ob
-        apply_transforms(ob, location=False, rotation=False, scale=True)
-    for ob in obs:
-        ob.select_set(state=True)
-
     if json_path is not None:
         for point in os.listdir(json_path):
             if point.endswith('.json'):