Hey guys, thanks for the reply (and sorry for my late reply).
I've been making some tests and yes, Marcus you're right. I thought that
the variables passed to a function were always considered as local
variables.
I studied a bit of programming years ago, so I don't remember the right
terms, but if i write for example:
x = 5
def double(x):
x *= 2
double(x)
print x
it will of course print 5, not 10.
I was looking for a way to have direct access to the outer variable.
In the case of a Maya Iterator, I've made a quick check simply printing the
iterator.index() inside the function to see if it was kepping the pace (and
it did).
def printIndex(polyIter):
print polyIter.index()
while not polyIter.isDone():
printIndex(polyIter)
polyIter.next()
Justin, as I was saying i'm not a seasoned programmer and I barely know
what profiling the code means. I was just guessing that making unneeded
operations would be a loss of performance.
So that said... how can I tell if I'm passing the variable as a local
variable or as a pointer?
I'm sorry if I look confused, but I am. Probably because I'm spending like
tens of hours everyday in front of the code, studying and working at the
same time and having random epiphanies occasionally :D
Il giorno martedì 10 giugno 2014 21:26:35 UTC+2, Justin Israel ha scritto:
>
> In addition to what Marcus said about passing the iterator instance, have
> you profiled your code to come to the conclusion that it is inefficient to
> create your iterator and function sets from within the function?
> On Jun 11, 2014 2:57 AM, "Marcus Ottosson" <[email protected]
> <javascript:>> wrote:
>
>> Hi Enrico,
>>
>> I’m not very acquainted with the API, and maybe I’m not understanding you
>> correctly, but Python passes everything as references to other objects.
>>
>> # This would pass `my_iterator` as reference to `maya_function`
>> maya_function(my_iterator)
>>
>> If you could provide a short snippet of your issue, I might be able to
>> help more.
>>
>> Best,
>> Marcus
>>
>>
>>
>> On 10 June 2014 14:58, Enrico Losavio <[email protected] <javascript:>>
>> wrote:
>>
>>> Hi everyone.
>>> I'm new to Maya Python API. I've been studying it since a couple of
>>> months and now I'm trying to write my first script (to be later adapted
>>> into a node).
>>> I'm writing a main function to iterate through a mesh, and a few
>>> secondary functions to retrieve certain information about it.
>>> The point is, everytime i call a function I have to recreate the
>>> iterators, function sets and everything i need in order to make it work.
>>> This seems a lot like a waste of code and of performances.
>>> Do you know if there is a way to pass the iterators or any Maya object
>>> to a function as pointers? I know python doesn't deal with pointers, but it
>>> would be so much easier. I've tried to look in the MScriptUtil
>>> documentation, but i couldn't find anything helpful
>>>
>>> Thanks for the help!
>>>
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>>
>>
>>
>> --
>> *Marcus Ottosson*
>> [email protected] <javascript:>
>>
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