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Allow disabling undo on save

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The transaction system does not scale on large scale or complex remove_deep deletions. So if you want to delete a mesh with many thousands of vertices, it becomes very, very slow. Unfortunately we cannot also clear Blender's undo history, so this advanced feature should be used carefully.

Tested:

 - deleting 250 average objects: 264s before, 246s after (6.8% faster)
 - deleting 1 object with 6,000 vertices: 5 minutes and counting (basically impractical) before, 11s after
This commit is contained in:
Dion Moult
2022-09-01 11:16:33 +10:00
parent a61c084f27
commit 36f2ed6da6
3 changed files with 13 additions and 2 deletions
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src/blenderbim/blenderbim/bim/module/project/operator.py
+10 -1
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@@ -828,7 +828,16 @@ class ExportIFC(bpy.types.Operator):
return {"RUNNING_MODAL"}
def execute(self, context):
return IfcStore.execute_ifc_operator(self, context)
if context.scene.BIMProjectProperties.should_disable_undo_on_save:
old_history_size = tool.Ifc.get().history_size
old_undo_steps = context.preferences.edit.undo_steps
tool.Ifc.get().history_size = 0
context.preferences.edit.undo_steps = 0
IfcStore.execute_ifc_operator(self, context)
if context.scene.BIMProjectProperties.should_disable_undo_on_save:
tool.Ifc.get().history_size = old_history_size
context.preferences.edit.undo_steps = old_undo_steps
return {"FINISHED"}
def _execute(self, context):
start = time.time()