Am Sonntag, 12. September 2010 schrub Mirza Husadzic: [...]
> The algorithm: > > As strokes are processed the key for each line in stroke (x1,x2,y1,y2) is > constructed and pushed into hash table. > If key is uniuqe then line in stroke is valid. > If key is duplicated, then line is rejected and current stroke ends (begin > of a new stroke). > That's it. > > This method can be applied even if paths are merged from GUI. I will > further test this approach > with other shapes from SVG (cubic bezier, ellipse etc). > If they are flattened on lines, at this stage, maybe this may work with > them too. > But, I'm not sure about this. I didn't tested it. > > I would like to hear you opinions. I haven't looked into your patch nor do I know how GIMP actually draws the paths. So if I'm writing nonsense – just ignore me. ;-) As I understand the previous mails the problem is that each path is painted using XOR so an even number of paths over a single pixel will be invisible. What about not drawing on the canvas using XOR but maintaining an extra 1-bit- buffer on which the paths are painted and which in the end is XORed to the image? I don't know if that's too much overhead or if it doesn't make any sense at all. It just came to my mind … > Cheers, > Mirza. Tobias
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