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Improve text-path positioning accuracy - #1166
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Cees-Kettenis wants to merge 2 commits into
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Cees-Kettenis wants to merge 2 commits into
Cees-Kettenis wants to merge 2 commits into
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added 2 commits
October 16, 2026 19:30
Compare all 42 affected fixtures against a 0.000001 accuracy control before updating the expected PNGs. The same 661 glyphs are retained; maximum glyph-origin deviation drops from 0.552105 to 0.001184 SVG units. Preserve the independent numeric regression for straight paths and collinear cubics.
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Text on a path can start roughly a quarter of a user unit away from its intended position because the arc-length solver uses a 0.5-unit tolerance.
Reduce the base arc-length accuracy to 0.001 while retaining the existing transform-scale adjustment, so both length estimation and inverse arc length place glyphs more accurately. Add a numeric regression for horizontal, vertical, and nonuniform collinear cubic paths.