Re: [Pyobjc-dev] Displaying a numpy array

[Ronald O. <ron...@ma...>]

On 30 Mar, 2009, at 21:28, Thomas Robitaille wrote:

> Hello,
>
> I have been using Python for a few months, and have now learned how to
> use PyObjC in a basic way to design a Cocoa interface (.nib) for a
> python script.
>
> I am interested in displaying a numpy array or PIL image using the
> interface. Is the way to do this to use an OpenGL view? or an Image
> View? Are there examples of such scripts anywhere? I looked at the
> OpenGLDemo.py example, but could not understand how this could be used
> to display the contents of an array.
>
> Any advice would be welcome,

There will be some code to convert to/from PIL images in a future  
release of PyObjC,
but I haven't written that code yet and wouldn't mind if someone send  
me a patch
for that ;-).

A kludgy way to display a PIL image is to convert the image to a  
string and then
create an NSImage from that.

I have no personal experience with numpy or OpenGL. AFAIK the OpenGL  
stuff
works almost completely through PyOpenGL and the Cocoa bindings in Cocoa
are just a way to represent a regular OpenGL canvas as a Cocoa object.

That btw. would be another nice contribution to PyObjC: write an  
OpenGL example
that does something more interesting than displaying a solid color. I  
guess a rotating
teapot would be appropriate for such an example.

Ronald
>
> Thanks,
>
> Thomas
>
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