Script : mirror

Support Modeling
1

Its probably basic : For every object in the scene that has “right” in its name I need to create a copy object on the left, but mirrored relative to the origin. I tried to use the code that appear in the Info panel when I do this mirroring manually. Before I (try to ) select the object to be mirrored. No mirroring occurs.

for  o in bpy.context.scene.objects:
if  "right" in o.name :
    new_left = o.copy()
    bpy.context.scene.collection.objects.link(new_left)
    new_left.name = o.name.replace("right", "left")
    bpy.context.view_layer.objects.active = new_left
    bpy.ops.transform.resize(value=(1, -1, 1), orient_type='GLOBAL', orient_matrix=((1, 0, 0), (0, 1, 0), (0, 0, 1)), orient_matrix_type='GLOBAL', constraint_axis=(False, True, False), mirror=True, use_proportional_edit=False, proportional_edit_falloff='SMOOTH', proportional_size=0.263331, use_proportional_connected=False, use_proportional_projected=False)
    bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)

There were some changes since 2.8, right ?

Thank you for any advice you can give me ! Nicolas

2

For me it work, except:

That is not working with copy, dont know why. But you can use
bpy.ops.object.duplicate_move(OBJECT_OT_duplicate={“linked”:False, “mode”:‘TRANSLATION’}, TRANSFORM_OT_translate={“value”:(0, 0, 0), “orient_type”:‘GLOBAL’, “orient_matrix”:((0, 0, 0), (0, 0, 0), (0, 0, 0)), “orient_matrix_type”:‘GLOBAL’, “constraint_axis”:(False, False, False), “mirror”:False, “use_proportional_edit”:False, “proportional_edit_falloff”:‘SMOOTH’, “proportional_size”:1, “use_proportional_connected”:False, “use_proportional_projected”:False, “snap”:False, “snap_target”:‘CLOSEST’, “snap_point”:(0, 0, 0), “snap_align”:False, “snap_normal”:(0, 0, 0), “gpencil_strokes”:False, “cursor_transform”:False, “texture_space”:False, “remove_on_cancel”:False, “release_confirm”:False, “use_accurate”:False})

Also you can try
bpy.ops.object.modifier_add(type=‘MIRROR’)
and
bpy.ops.object.modifier_apply(apply_as=‘DATA’, modifier=“Mirror”)

3

Thanks for your help Rigoletto,
I used you first command. But I need to change the new object’s name (the one produced by the duplicating).
How can I reach it ?
I tried this but it didn’t work :

for  o in bpy.context.scene.objects:
    if  "droit" in o.name :
        
        bpy.context.view_layer.objects.active = o
        bpy.ops.object.duplicate_move(OBJECT_OT_duplicate={"linked":False, "mode":'TRANSLATION'}, TRANSFORM_OT_translate={"value":(0, 0, 0), "orient_type":'GLOBAL', "orient_matrix":((0, 0, 0), (0, 0, 0), (0, 0, 0)), "orient_matrix_type":'GLOBAL', "constraint_axis":(False, False, False), "mirror":False, "use_proportional_edit":False, "proportional_edit_falloff":'SMOOTH', "proportional_size":1, "use_proportional_connected":False, "use_proportional_projected":False, "snap":False, "snap_target":'CLOSEST', "snap_point":(0, 0, 0), "snap_align":False, "snap_normal":(0, 0, 0), "gpencil_strokes":False, "cursor_transform":False, "texture_space":False, "remove_on_cancel":False, "release_confirm":False, "use_accurate":False})   
        
        newObj = bpy.context.selected_objects[0]
        newObj.name = o.name.replace("droit", "gauche")
        if  not "scripted" in newObj.name :  
            newObj.name = "scripted--" + newObj.name

In fact, I don’t really understand what bpy.ops.object is …
Thanks !!

4

For me your script worked without errors, it duplicates and renames.

bpy.ops is for accessing the operators from blender, in this case the object operators, like add, move, …
API docs are here: https://docs.blender.org/api/2.82/bpy.ops.html

Also take a look at the python console, there you can do autocomplete with TAB and browse trough the provided functions and call the docs via help.

console
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