Re: [pygame] BufferProxy (was Flood Filling Images)

["René Dudfield" <renesd@xxxxxxxxx>]

Note that the examples/pixel_array.py shows you a bunch of examples of
how to use PixelArray.

cheers,




On Tue, Apr 15, 2008 at 6:14 PM, Marcus von Appen <mva@xxxxxxxxxxxx> wrote:
> On, Tue Apr 15, 2008, Brian Fisher wrote:
>
>  > My bad, I always assumed implementing the buffer interface would make
>  > the BufferProxy object give python code the ability to modify the
>  > contents of the surface just like through array.array...
>  >
>  > I dislike adding numpy/numeric as a dependency, and previously I sped
>  > some stuff up by making an array from a string, modifying the array,
>  > then making a new surface from the modified array as a string vs.
>  > getting and setting pixels, so I would love it if I could just do
>  > stuff like:
>  > ---
>  > surface = Surface((1,1), 32)
>  > surface_contents = surface.get_buffer()
>  > surface_contents[3] = 0
>  > ---
>  > or whatever...
>  >
>  > does that seem like something that would be sensible to add to the
>  > buffer proxy? is there a C python interface thing that makes providing
>  > that kind of access real easy?
>
>  That's what the PixelArray is for. Due to the alignment, pitch, etc. of
>  the surface data, you cannot easily operate directly on the
>  buffer. BufferProxy is just a simple interface to the surface pixels so
>  other systems like e.g. numpy can (ab)use surfaces pixels easily without
>  the need to write C code for them.
>
>  Regards
>  Marcus
>