Custom node inheritance and initialization

[amorano]

So, I take it either I am doing something so wrong it can't be done, or I am doing something no one has ever done?

Basically the crux of the issue is:

How do you make a hierarchy of your own node types so that you do not have to redefine all the attrs from the base class(es) in each sub-class and can use the super/base class to perform things like compute(s), connection* functions on said base class attrs, while at the same time also performing those in the child classes.

Some reference to the issue:

http://tech-artists.org/forum/showthread.php?t=1648

http://tech-artists.org/forum/showthread.php?p=10505#post10505

If anyone can help, it'd be very appreciated, even if it is to tell me the design is flawed and needs to be re-done.

[joojaa]

You can inherit, just be a bit carefull with this tough. And be sure you know what your actually doing and youlle be fine. However you should be a bit particular with storing Mobjects, which means quite basically not to store them at all mostly, becasue they are not yours.

Anyway its very hard to say anything particular wen we dont have any clue what you inherited form. Not that i have particular interest to analyze your code offcourse. MAyway the analysis om thread looks ok.

[rob-bateman]

inheritAttributesFrom()

[amorano]

Yeah I tried inheritAttr...

Problem is, I think that is meant for classes that are not direct decendants of other classes because it throws a pure virtual exception and crashes Maya when I use it in the sub-classes.

I think because the parent classes haven't technically been "initialized" fully by Maya i.e. the post constructors are called after all the classes are initialized.

So I think Maya doesn't see the fully initialized super class and says, "Sorry child, I have a blueprint, but am not fully done with the house, you want attributes that sorta exist." and promptly crashes.

I only say that because I have tried inherits after a non-inheriting class was fully initialized and it works fine.

I consider you guys authorities on the Maya API so cheers for the help!!

[whisperwing]

just curious (and being too lazy to reinvent the wheels), any progress since May ?