Glassvision/IfcOpenShell
1
0
Fork 0
mirror of https://github.com/IfcOpenShell/IfcOpenShell.git synced 2026-09-21 23:00:53 +00:00
Code Issues Packages Projects Releases Wiki Activity

bim.assign_class - flip normals if matrix is negative #6500

Browse Source 
object.transform_apply doesn't preserve normals (https://projects.blender.org/blender/blender/issues/102266)
This commit is contained in:
Andrej730
2025-04-09 15:26:34 +05:00
parent 273d6c1039
commit 69b5d0940f
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/bonsai/bonsai/bim/module/root/operator.py
+7
View File
@@ -229,12 +229,19 @@ class AssignClass(bpy.types.Operator, tool.Ifc.Operator):
continue continue
if self.should_add_representation and isinstance(obj.data, bpy.types.Mesh) and obj.data.polygons: if self.should_add_representation and isinstance(obj.data, bpy.types.Mesh) and obj.data.polygons:
# Apply scale.
if obj.scale != (1, 1, 1): if obj.scale != (1, 1, 1):
if obj.data.users > 1: if obj.data.users > 1:
bpy.ops.object.make_single_user( bpy.ops.object.make_single_user(
object=True, obdata=True, material=False, animation=False, obdata_animation=False object=True, obdata=True, material=False, animation=False, obdata_animation=False
) )
is_negative = obj.matrix_world.is_negative
bpy.ops.object.transform_apply(location=False, rotation=False, scale=True, properties=False) bpy.ops.object.transform_apply(location=False, rotation=False, scale=True, properties=False)
# object.transform_apply is losing normals.
if is_negative:
for polygon in obj.data.polygons:
polygon.flip()
if tool.Geometry.mesh_has_loose_geometry(obj.data): if tool.Geometry.mesh_has_loose_geometry(obj.data):
self.report( self.report(
{"WARNING"}, {"WARNING"},