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clean up drawing with 0-width pens (hairline mode)

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original commit: 95f0d16761721265df5bfff993e56d1b075b4941
This commit is contained in:
Matthew Flatt 2011-03-27 14:10:34 -06:00
parent 3b16f7a8e2
commit aa45dea3f8
1 changed files with 7 additions and 0 deletions
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doc/release-notes/racket/Draw_and_GUI_5_1.txt
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@ -108,6 +108,13 @@ generates PDF output.
The new `svg-dc%' drawing context is similar to `post-script-dc%', The new `svg-dc%' drawing context is similar to `post-script-dc%',
but it generates SVG output. but it generates SVG output.
All drawing contexts, including `post-script-dc%' support smoothing
modes, and the default is 'unsmoothed even for `post-script-dc%' ---
which means that PostScript drawing is aligned and pen widths are
truncated to integer sizes by default. Drawing at pen size 0 no longer
triggers ``hairline'' mode, but instead just uses a 1/4-width pen
when in 'smoothed mode.
Other Drawing-Context Changes Other Drawing-Context Changes
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