Adding a link to the upper layer in AnimLayer?

[Ali-RS]

Hello,

Is it a good idea to add a link to the upper layer in the AnimLayer class? So by accessing an AnimLayer, we can walk through all its above layers.

Linking should be done automatically by AnimComposer whenever a new layer is added or an existing layer is removed.

Required methods:

AnimLayer.setUpperLayer()/getUpperLayer()

What is the use case?

An example use case would be in this PR #2043 where we need to find all the above layers from a specific layer.

something like

while((layer = layer.getUpperLayer()) != null) {
   // do stuff
}

what do you think?

[pavly-gerges]

Hi, You guys are opening discussions here, nice, I did see it by chance :-).

Is it a good idea to add a link to the upper layer in the AnimLayer class? So by accessing an AnimLayer, we can walk through all its above layers.

That's a type of Visitor Pattern, it's very useful, though, I think it already exists through the AnimComposer object, if that is true, then no need to replicate new encapsulations, just provide a use-case.