Properly handling Inheritance of VizNode and using copy
Hello Vizard support.
I had a question on how to properly implement the I have created several class that inherit from VizNode, however they have their own __init__ functions that take in additional parameters beyond what VizNode might utilize. When I create a copy of these objects using the original copy method provided by Vizard, I get an error that indicates I am not getting the correct number of parameters into the class __init__ method I created. When I looked at how copy was implemented, it looks like you return an instance of self.__class__(Vizard Stuff In Here) when I call copy. Below is my __init__ method, as you can see I take in an additional template parameter. Code:
class GreenObject(Model3D, Properties): Normally, I would just call the base classes version then add my own code. But I don't know much about what VizNode is doing behind the scenes and I figured you'd have a better idea on how to handle this. Thanks, George |
Your example code does not show how the node object is created. Is it passed to your class, or is it created within the __init__ of your class?
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Sorry, forgot to include that class as well.
Here is a super class of GreenObject called Model3D which derives from viz.VizNode Code:
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The node.copy command will pass all extra keyword arguments to the class __init__ method. You can override the copy method in your class and have it pass all the required arguments as keyword arguments to the underlying node.copy method. Example:
Code:
import viz |
I believe it will work.
I'll create a new instance of the class in the copy constructor and pass the copy into the initializer. This way the copy command will now not just copy viz.VizNode but I can code it to also copy the rest of the parameters I've attached to my new class as well. Thank you, George |
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