Switch on and off parametric behaviour of document objects about freecad

[adrianinsaval]

I this relevant? I think this use case is now covered well by the simple copy command, consider closing this issue

[FlachyJoe]

@wwmayer you tell me about this issue, do you think a Freezed state is needed for DocumentObject in order to prevent re-computation?
I had a look on the code and I think it's easy to implement.
A freezed object will always return false to mustRecompute() and it's properties will be readonly.

[wwmayer]

you tell me about this issue, do you think a Freezed state is needed for DocumentObject in order to prevent re-computation?

Unlike to my suggestion at that time I wouldn't use a PropertyBool any more because this has an extra cost of additional memory for every object type which is unused in 99% of all cases. I prefer to extend the ObjectStatus enum with a further value e.g. "NonParametric" or "Frozen" or whatever.

A frozen object will always return false to mustRecompute()

Yes.

and it's properties will be readonly

This will be a bit tricky because the flag can be reverted and there is no easy way to restore the original status of all properties. I would just leave the properties untouched. It should be checked if doing nothing inside DocumentObject::onChanged is sufficient.