return from exec_three_obj_method

[tingelst]

How can I capture the return value when calling exec_three_obj_method?

[vidartf]

There is currently not an official API for this (suggestions / PR welcome). As a workaround / hack, you can override the class / instance method def _on_ret_val(self, method_name, ret_val): .... Note that this gets called asynchronously (i.e. possibly after the cell has finished executing), so you need to be mindful of this!

[tingelst]

Thank you! Is this the reason why matrixWorld isn't updated directly when calling exec_three_obj_method('updateMatrixWorld') in the same cell?

[vidartf]

Yes, all syncs / updates are asynchronous. If you set up an traitlets change notification on the matrixWorld property, you should be notified when it changes.

[tingelst]

Takk!