[Image-SIG] Bug in rotate with expand=True

[Ole Laursen]

I hate to quote myself, but I just realized that I had to apply this
patch again against a new server install. Did somebody look at my bug
report from back in April?

It's a one-line fix so it really shouldn't be too hard to review. :)
Is this the wrong forum?

Again, please keep the CC as I'm not subscribed to the list.

On Fri, Apr 4, 2008 at 11:31 AM, Ole Laursen <olau at iola.dk> wrote:
> Hi,
>
> Try this
>
> import Image, ImageDraw
>
> i = Image.new("RGBA", (100, 100), (255, 0, 0, 0))
> draw = ImageDraw.Draw(i)
> draw.line([(0, 50), (100, 50)], fill=(255, 0, 0), width=3)
> i.save("original.png")
>
> i.rotate(15, Image.BICUBIC, True).save("enlarged.png")
> i.rotate(15, Image.BICUBIC, False).save("not-enlarged.png")
>
> Then take a look at "enlarged.png". Contrary to "not-enlarged.png",
> it's not anti-aliased in spite of both having Image.BICUBIC set. I
> believe this is a bug in rotate(). It appears to be a question of line
> 1320 in Image.py
>
>            return self.transform((w, h), AFFINE, matrix)
>
> missing the resample parameter
>
>            return self.transform((w, h), AFFINE, matrix, resample)
>
>
> (Please keep the CC as I'm not subscribed to the list.)
>
> --
> Ole Laursen
> http://www.iola.dk/

-- 
Ole Laursen
http://www.iola.dk/