Re: image scaling

["David O'Toole" <dto@gnu.org>]

I would like to suggest basic image-composition as well. I wrote a
graphical roguelike engine in Emacs that uses the external "convert"
program to resize and compose (i.e. overlay on top of one another)
tiny graphical tiles that represent the player, monsters, walls,
objects to be picked up, et cetera.

This works fine with Imagemagick, but it would be wonderful to be able
to compose these images directly within Emacs.

Some screenshots here: http://dto.mamalala.org/notebook/rlx.el

Currently won't compile due to refactoring, but the screenshots are real.

On Thu, Feb 21, 2008 at 5:06 AM,  <joakim@verona.se> wrote:
> Stefan Monnier <monnier@iro.umontreal.ca> writes:
>
>
>
> > Looking at the Elisp manual's "38.16.2 Image Descriptors", it seems that
>  > we do not support image scaling.
>
>  > I'd like to add such a feature to image-mode.el, but am wondering how we
>  > should go about doing it.  Would there be some advantage to provide it
>  > at the C level (e.g. if some of the image libs we use already provide
>  > the necessary functionality) or should we just bite the bullet and call
>  > some external tool like "convert -scale ..." (with the disadvantage that
>  > flushing the image cache will not automatically cause the image to be
>  > re-scaled).
>
>  I've looked at this briefly while preparing the SVG patch for inclusion.
>
>  I think it would be apropriate to do this at the C level, but what would
>  the Lisp level interface look like?
>
>  >
>  >
>  >         Stefan
>  >
>  --
>  Joakim Verona
>
>
>