On 13/9/11 09:22, Jasper van de Gronde wrote:
On 12-09-11 19:27, Tom Sparks wrote:
From: Jasper van de Gronde <th.v.d.gronde@...226...> Sent: Monday, 12 September 2011 7:57 PM
If you know of any program that can (semi-)automatically create those kinds of hatchings, I'd love to know. As for importing from the gimp, if it's just a bitmap it will still be just a bitmap when imported. You might have some luck with tracing such bitmaps though (so if you manage to get a nice bitmap with a hatching, you be able to import it and get a decent trace of it so that you alter it in Inkscape).
there are papers[1] on Non-photorealistic rendering, so why has nobody (nerds included) created a plugin/filter/program?
Well a lot are "not that good", another is that (many) are made for shading 3D models (rather than helping with 2D drawing). Although there is bound to be something out there that uses one of these algorithms, I would expect it more in the 3D modelling area.
Did you by chance browse through the rest of the Egg-Bot wiki [1] (since the original question was referring to its smiley tutorial)? They describe an alternative method to generate line-based shadings (though not the same technique as used in the art of Duerer et al.):
http://wiki.evilmadscience.com/TSP_art http://wiki.evilmadscience.com/Generating_TSP_art_from_a_stippled_image
It is based on stippling and aims for a single continuous path (TSP) instead of hatching with closely spaced parallel lines, but might still provide some interesting ideas and links... (and includes a set of python scripts to generate SVG output based on a bitmap image with the stippling information).
~suv
[1] <http://wiki.evilmadscience.com/The_Original_Egg-Bot_Kit>