As our simulation runs we can add and remove models and many times the same model repeatedly. We only load the physical model once and then clone it for each instance we need. Each model can contain matrix transforms, switches, LODs, and update callbacks that all need to be unique. I am trying to limit how much we are actually cloning now since we don't necessarily have all of these things in every model. For example if we have a light pole that is use 100 times, we don't even need to clone, we can just add the child directly to the scene under different matrix transforms. The problem is in understanding when I actually need to clone and what type of options I need.
I know I need to use the DEEP_COPY_ARRAYS when I need the actual vertices to be different, which does happen sometimes when I add a matrix that gets flattened on to the model. However, for switches, dynamic matrixTransforms, LODS, and callbacks, when do I use the different options? So far I have only gotten everything to work for those when I do a DEEP_COPY_NODES. Do I really need this, or would some subset of other options work? I guess my main question is when are each of the various DEEP_COPY_ options needed?
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