Re: PyOpenGL: numpy dependency?

Mike C. Fletcher wrote:

>>>> I wonder why numpy is a mandatory dependency for OpenGL-ctypes. As
>>>> far as I can tell, it's used only to handle arrays, and I pass my
>>>> arrays as lists of floats to PyOpenGL. Why do I still need to
>>>> install numpy?
>>>>
>>>>
>>> In fact, you don't.  Numpy support is "effectively" required,
>>> because efficient operation generally wants it, but it's not
>>> actually an
>>> enforced dependency AFAIK.  That is, if you've found a true hard
>>> dependency (rather than a recommendation) let me know and I'll try
>>> to
>>> fix it.
>>>
>>
>> glLoadMatrixd(). I tried to pass a simple Python list of floats and
>> it did not work. Is there a way to call glLoadMatrixd() without
>> *any* external numeric package installed? What I find confusing is
>> that the exception raised is an ImportError with a msg like "numpy
>> not supported". That makes believe that there is a real dependency
>> on numpy, am I right?
>>
> There was a bug and missing functionality.  Numpy was being used to
> support lists and tuples.  I've added support that uses ctypes for
> handling list/tuple input formats for arrays.

Great news, thanks! What's the easy_install magic to pull an updated version?

> At the moment it does
> *not* convert back to lists/tuples on output (it returns ctypes
> arrays-of-arrays).

OK. I guess you want it fixed as ctypes is an implementation detail of PyOpenGL
after all, don't you?

Giovanni Bajo


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