Additional files for plug-in dev

Helper

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On 05/12/2011 at 15:26, xxxxxxxx wrote:

The external libs I use (not written by me) I've placed in the Maxon/user area:
/user/library/python/packages/osx folder (or win I suppose for win system)

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 05/12/2011 at 15:38, xxxxxxxx wrote:

Thanks, Lennart. I suppose my question should be qualified by saying I want it to be portable with the plug folder to other systems. I was hoping to have everything contained.

Helper

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On 05/12/2011 at 15:52, xxxxxxxx wrote:

I see. Maybe it's worth trying have your file in your plugin folder and upon start
of Cinema have it check if that file is present in the lib folder and if not have it
copied. I'm not sure of the loading order and a worst case would need a restart
of Cinema (with a Info popup).
I use this way for browser lib files copied by some of my plugins and it works fine.

Helper

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On 05/12/2011 at 15:56, xxxxxxxx wrote:

Very interesting. It's worth a try for sure. Thanks, Lennart.

Helper

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On 05/12/2011 at 19:01, xxxxxxxx wrote:

Yes. It is possible to import multiple .py files (your classes) from within your plugins folder.

Here's the jist of it:

-Create a .py file with your class in it.
For this simple example. The external class will be called "MyClass"

-Make your class code look like this:

class MyClass() :                            
  def __init__(self, name = 'Scott') :   #The constructor with a required name parameter    
      self.name = name                  #Sets up the name parameter to work

-Name the .py file "MyClass.py"

-Put the file in your plugins folder

-At the top of your plugin code. Add these three lines of code:

import.os  
sys.path.append("C:/Program Files/MAXON/your CINEMA 4D version/plugins/MyPlugin")  
from MyClass import MyClass

*Note: Make sure you edit that code to your specific path names!!!!

-Next. In your plugin code. You'll need to instantiate your external class like this:

class Sub(MyClass) :                  #The parent class this class is connected to is listed in the parentheses   
  def __init__(self) :            #The sub class's constructor  
  
      MyClass.__init__(self)        #Call to the super class called "MyClass" in the external file

-Now you can call to that external class from withing any of your plugin's methods.
Example:

    def Execute(self, tag, doc, op, bt, priority, flags) :  
      s = Sub()         #Create an instance of the sub class..Which is also inheriting things from the external MyClass.py file  
      print s.name      #Prints the default name parameter value that exists inside of the MyClass.py file                    
               
      return c4d.EXECUTIONRESULT_OK

FYI:
Be aware that you'll sometimes have to shut down C4D and restart it when adding your external stuff.
Using: print sys.path will let you know whether or not the folder you're targeting is actually set up as a valid path.

I've only done this a couple of times. And I haven't really tested it that much yet. So no guarantees that it's bug free.
But so far it seems to work fine for me.

-ScottA

Helper

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On 05/12/2011 at 19:08, xxxxxxxx wrote:

Wow! Thanks a ton for that , Scott. I will try it thusly!

Helper

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On 06/12/2011 at 01:30, xxxxxxxx wrote:

Originally posted by xxxxxxxx

sys.path.append("C:/Program Files/MAXON/ your CINEMA 4D version /plugins/ MyPlugin")

Please use this instead, as it is more safe when the user moves you plugin to another folder or he is on another platform, etc.

import os  
    import sys  
      
    __currdir__ = os.path.dirname(__file__)  
    if __currdir__ not in sys.path:  
        sys.path.insert(0, __currdir__)

Cheers,  
Niklas

Helper

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On 18/01/2012 at 14:21, xxxxxxxx wrote:

@ScottA:

Originally posted by xxxxxxxx

-Next. In your plugin code. You'll need to instantiate your external class like this:

class Sub(MyClass) :                  #The parent class this class is connected to is listed in the parentheses   
  def __init__(self) :            #The sub class's constructor  
 
      MyClass.__init__(self)        #Call to the super class called "MyClass" in the external file

-Now you can call to that external class from withing any of your plugin's methods.
Example:

    def Execute(self, tag, doc, op, bt, priority, flags) :  
      s = Sub()         #Create an instance of the sub class..Which is also inheriting things from the external MyClass.py file  
      print s.name      #Prints the default name parameter value that exists inside of the MyClass.py file                    
               
      return c4d.EXECUTIONRESULT_OK

Why are you creating a subclass for MyClass? This is neither called "creating an instance" nor it is necessary. Just instantiate MyClass like this:

    def Execute(self, tag, doc, op, bt, priority, flags) :  
      s = MyClass()  
      print s.name

Note: Overriding __init__ for calling the super-classes constructor isn't necessary, too.

Helper

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On 18/01/2012 at 15:47, xxxxxxxx wrote:

When you see me do something strange. There is usually no good reason for it other than I don't know a better way to do it.
Do German's know what the term "sky hook" means?
I make lots of them.

I'm self taught. And I tend to make up my own rules sometimes.
Like Charles Barkley says: "I am not a role model"

-ScottA

Helper

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On 18/01/2012 at 21:39, xxxxxxxx wrote:

Hm, actually never heard of it..

So I am. I often learn something from your posts, but this time I taught you.
Cheers,