Re: [PyOpenGL-Users] stackoverflow: fastest way to build a c array from a list of tuples of floats?

[Jonathan H. <ta...@ta...>]

On 12/11/2010 16:29, Christopher Barker wrote:
> On 11/11/10 11:48 PM, Jonathan Hartley wrote:
>> What is the fastest way in python to build a c array from a list of
>> tuples of floats? The context: my Python code pass arrays of 2D vertices
>> to OpenGL.
>
> This seems like an obvious use for numpy:
>
>> points = [(random(), random()) for _ in xrange(1000)]
>
> def array_numpy(points):
>       return np.array(points, dtype=float32)
>
> And you can save the overhead of the function call, since it's a
> one-liner anyway. Of course, if you're using numpy, you probably never
> would have had all those points in tuples in the first place -- you'd
> just use numpy arrays from the start.




Thanks for this. I'm trying out the numpy approach now.

	Jonathan
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