[Tuxpaint-devel] Rush, trying to improve speed

[Pere P. i C. <per...@gm...>]

Hi all,

Trying to improve the speed of the Rush magic tool I've noticed that using rotozoomSurface() increases the speed of the tool to the double, while this is a great improvement, Rush is still too slow in
big drawings, so I've tried another approach to get a dynamic zoom, basically scaling and alpha blitting over, and now it gets a decent speed.

Please test the attached patch and see if it does what Rush is meant to do.

The patch exposes rotozoomSurface as api->rotate_scale() to the magic tools and uses it in the Rush tool.
If adopted, I think we should also update the magic api version.

Please test, there are still some things to tweak, feel free to play around.

Thanks
Pere