On Fri, Jul 10, 2009 at 12:01 AM, Pajarico <pajarico@...400...> wrote:
> You can do this using a DisplacementMap filter... but it is not
> necessarily easy or the best way. See:
>
> http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Filters-Pixel.html#Filters-DisplacementMap
>
> Tav

Thanks Tav, but actually I'm looking for a solution that's not based on bitmaps.

Indeed, a DisplacementMap filter can do it (if you don't demand the result to be an editable path). And it works with any objects, not only bitmaps.
See the file I attached to this mail. It has been made looking how the filters under the "Distort" filter category are made.

Steren