TechDraw: Hatching clip path functionality is missing from svg export

[dov]

TechDraw: Hatching clip path functionality is missing from svg export

[dov]

I'm attaching here an example svg file created with inkscape illustrating how clipping can be done with svg.

svg-clip-example.zip

[maxwxyz]

Does https://wiki.freecad.org/TechDraw_GeometricHatch function produce the same outcome?

[dov]

Does https://wiki.freecad.org/TechDraw_GeometricHatch function produce the same outcome?

No, I just tested it. It does not! It's svg output renders ok.

Note however, that the neither svg, through Image File or GeometricHatch, makes use of the svg clipPath feature.

(Alltogether the svg output is extremely redundant, with e.g. setting the font-family element for every path element drawn)

[maxwxyz]

@WandererFan FYI

[WandererFan]

QtSvg only supports Svg-Tiny. According to Adobe Illustrator Help -- Saving artwork: Save in SVG format, SVG Tiny does not support gradients, transparency, clipping, masks, symbols, patterns, underline text, strike through text, vertical text, or SVG filter effects.

This works in v0.20.2 but not in v0.21.2 or v0.22dev, so it is an old regression.

[WandererFan]

PR #13400 reinstates the substitution of pixmaps for svg hatch tiles from v0.20. This will have the same impact on graphics quality as it did in v0.20.

Svg hatch rotation and offset will not work on export. The pixmaps will be displayed as if rotation and offset are null. Rotated pixmaps look even worse than plain pixmaps.

[dov]

Yikes. Pixmaps for svg is ugly. :-(

How hard would it be to parse (a subset of) svg in the SVG tiles and then use libclipper for the clipping? E.g. using the first path statement only and then transform and clip by libclipper?