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Fix for font Bahnschrift -

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Simplify use also pftNonZero
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Filip Sykala - NTB T15p 2022-09-12 16:10:02 +02:00
parent 0d686bf91d
commit 24b71ada5e
1 changed files with 5 additions and 1 deletions
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6
src/libslic3r/Emboss.cpp
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@ -66,7 +66,7 @@ ExPolygons Emboss::heal_shape(const Polygons &shape) {
// When edit this code check that font 'ALIENATE.TTF' and glyph 'i' still work // When edit this code check that font 'ALIENATE.TTF' and glyph 'i' still work
// fix of self intersections // fix of self intersections
// http://www.angusj.com/delphi/clipper/documentation/Docs/Units/ClipperLib/Functions/SimplifyPolygon.htm // http://www.angusj.com/delphi/clipper/documentation/Docs/Units/ClipperLib/Functions/SimplifyPolygon.htm
ClipperLib::Paths paths = ClipperLib::SimplifyPolygons(ClipperUtils::PolygonsProvider(shape)); ClipperLib::Paths paths = ClipperLib::SimplifyPolygons(ClipperUtils::PolygonsProvider(shape), ClipperLib::pftNonZero);
ClipperLib::CleanPolygons(paths); ClipperLib::CleanPolygons(paths);
Polygons polygons = to_polygons(paths); Polygons polygons = to_polygons(paths);
static const Points pts_2x2({Point(0, 0), Point(1, 0), Point(1, 1), Point(0, 1)}); static const Points pts_2x2({Point(0, 0), Point(1, 0), Point(1, 1), Point(0, 1)});
@ -82,6 +82,10 @@ ExPolygons Emboss::heal_shape(const Polygons &shape) {
polygons.push_back(rect_3x3); polygons.push_back(rect_3x3);
} }
} }
// TTF use non zero winding number
// https://docs.microsoft.com/en-us/typography/opentype/spec/ttch01
// https://developer.apple.com/fonts/TrueType-Reference-Manual/RM01/Chap1.html
ExPolygons res = Slic3r::union_ex(polygons, ClipperLib::pftNonZero); ExPolygons res = Slic3r::union_ex(polygons, ClipperLib::pftNonZero);
Slic3r::Polygons holes; Slic3r::Polygons holes;