.2 seconds to rotate an image sounds ridiculously long - that sounds broken.
Are you sure it can take that long just to do the rotation?
How big is this image?
Can you share a minimal sample (like 1 file + the image) that does the
rotations and prints out the timings, which goes really slow for you? If you
do that, then others can run it as well to see if they get the same slowness
you do.
On Wed, Jan 20, 2010 at 5:08 PM, Bram Cymet <bcy...@cbnco.com> wrote:
> Hi All,
>
> I did some profiling of my pygame application and I found that it was
> spending a lot of time doing rotation operations. Basically I have some
> balls on the screen that are represented by gifs with transparent
> backgrounds and I want to make them spin.
>
> I use the following code:
>
>
> These first two lines are only run in init for the object
> self.image = pygame.image.load('image.gif')
> self.image = self.image.convert()
>
> self.image = pygame.transform.rotate(self.image, degrees)
> self.rect = self.image.get_rect()
>
> Then I return the rect and blit and update that part of the screen. A
> lot of time is spent on that pygame.transform.rotate command. On my
> laptop with a dual core 2.2 ghz processor if works fine. However on the
> target hardware which is:
>
> Atom 330 (dual core 1.6 ghz) with an ION chipset and graphics
>
> it runs very slow and can take up to 0.2 seconds to execute just that
> one line of code.
>
> Is there something I am doing wrong? Is there some way I can make this
> faster.
>
> I am not sure if it matters but just for the sake of completeness: the
> application is multi-threaded but only one thread is running during this
> part of the application.
>
> Any help would be great.
>
> Thanks,
>
> --
> Bram Cymet
> Software Developer
> Canadian Bank Note Co. Ltd.
> Cell: 613-608-9752
>
>
>
