> Am 01.09.2021 um 14:06 schrieb Hans Hagen via ntg-context > <ntg-context@ntg.nl>: > > On 9/1/2021 12:48 PM, Henning Hraban Ramm via ntg-context wrote: >> Hi, since Jacob started the pony mode, here’s one I’d like to ride: >> MetaPost pens are constant, i.e. they never change over the length of a path. >> Commercial vector graphics apps have “vector brushes”, e.g. Adobe Fresco: >> https://helpx.adobe.com/fresco/using/vector-brushes.html >> The page nicely shows the necessary variables. >> In Inkscape you can combine “brush images” like >> https://publicdomainvectors.org/en/free-clipart/Paintbrushes-for-Inkscape/86586.html >> with pen shapes: >> https://logosbynick.com/custom-brushes-in-inkscape/ >> This stretches the whole shape over the path – not perfect but good enough >> (and the same what e.g. “my” Affinity Designer does). >> (https://affinity.serif.com/designer/) >> Is this possible with MetaFun, i.e. use a closed path and distort/stretch it >> along an open path? >> If, how? > you can try to 'reverse engineer the result' and see what is done by looking > at the output
The Inkscape SVG just calls a path-effect "bend_path", see attachment. If I save a “normal” SVG, the result is “flattened” into a path that looks the same but isn’t changeable any more. > anyway, i guess it some mix of existing basics, as in > > \starttext > > \startMPcode > path p ; p := > ( unitcircle xscaled (5cm randomized 5mm) yscaled (4cm > randomized 3mm)) -- > (reverse (unitcircle xscaled (5cm randomized 3mm) yscaled (4cm > randomized 5mm))) -- cycle; > draw (p) > % withpattern image (fill fullcircle scaled 2mm withcolor > "darkyellow" ;) > % withpattern image (draw figure "mill.png" ;) > withpattern image (draw figure "hacker.jpg" ;) > withpatternscale (1/40,1/80) > ; > > \stopMPcode > > \stoptext > > so, fills, eofills, patterns and such I tried to convert my “brush” into MP, but pstoedit fails on either SVG. It worked via an exported EPS though, see attachment. I could then use the brush as a path, also with "withpattern", but that doesn’t stretch/distort the “pattern” along the path. And I don’t understand how the other fill options would do that. Yes, I must learn more about MetaPost... Hraban
brush.mp
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