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- Use active object as mirror plane when other objects are selected,

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falling back to in-place X-axis flip when only one object is selected
- Show Mirror Geometry button for any active IFC element, not just
  flippable types

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This commit is contained in:
Ryan Schultz
2026-03-10 20:39:46 -05:00
parent 720d97c784
commit ab977f23c8
1 changed files with 22 additions and 8 deletions
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src/bonsai/bonsai/bim/module/model/product.py
+22 -8
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@@ -694,11 +694,19 @@ class TrueMirrorElements(bpy.types.Operator, tool.Ifc.Operator):
return context.selected_objects
def _execute(self, context):
for obj in context.selected_objects:
self.mirror_obj(context, obj)
active_obj = context.active_object
mirror_ref = None
if active_obj:
objs_to_mirror = [obj for obj in context.selected_objects if obj != active_obj]
if objs_to_mirror:
mirror_ref = active_obj
if mirror_ref is None:
objs_to_mirror = context.selected_objects
for obj in objs_to_mirror:
self.mirror_obj(context, obj, mirror_ref)
return {"FINISHED"}
def mirror_obj(self, context: bpy.types.Context, obj: bpy.types.Object):
def mirror_obj(self, context: bpy.types.Context, obj: bpy.types.Object, mirror_ref: bpy.types.Object = None):
element = tool.Ifc.get_entity(obj)
if not element:
return
@@ -717,11 +725,17 @@ class TrueMirrorElements(bpy.types.Operator, tool.Ifc.Operator):
context.view_layer.update()
mirrored_bb_data = tool.Blender.get_object_bounding_box(obj)
x_correction_factor = mirrored_bb_data["min_x"] - bb_data["min_x"]
x_correction_vec = (obj.matrix_world @ Vector((x_correction_factor, 0, 0, 0))).xyz
obj.location -= x_correction_vec
if mirror_ref:
# Reflect object origin about the mirror reference's YZ plane
origin_in_mirror = mirror_ref.matrix_world.inverted() @ obj.matrix_world.translation
origin_in_mirror.x *= -1
obj.matrix_world.translation = mirror_ref.matrix_world @ origin_in_mirror
else:
# Fall back: nudge in place to compensate for bounding box shift after inversion
mirrored_bb_data = tool.Blender.get_object_bounding_box(obj)
x_correction_factor = mirrored_bb_data["min_x"] - bb_data["min_x"]
x_correction_vec = (obj.matrix_world @ Vector((x_correction_factor, 0, 0, 0))).xyz
obj.location -= x_correction_vec
if element.is_a("IfcElement") and element.FillsVoids:
tool.Model.update_simple_openings(element)