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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2009-02-13 10:03:22 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2009-02-13 10:07:37 +0000 |
| commit | de7270cb1e9510cb230e80045c812fa68fcfa585 (patch) | |
| tree | 0ee041ee584363ed8e5b144e3c1b9a899572bdf3 | |
| parent | e7d4bc3d864b1b42bb1cae031036ddf6a4445d3c (diff) | |
[cairo] Describe the restrictions upon cairo_set_tolerance()
Truc Troung reported that the behaviour of
cairo_set_tolerance()/cairo_get_tolerance() was inconsistent with the
documentation, i.e. we failed to mention that the tolerance would be
restricted to the smalled fixed-point value.
Add a sentence to the documentation that describes the restriction without
mentioning what that is... Hopefully that is sufficient detail to
accommodate the reporter, without exposing internal implementation details.
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=20095
Bug 20095 - The cairo_set_tolerance() function behavior is inconsistency
with the spec
| -rw-r--r-- | src/cairo.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/cairo.c b/src/cairo.c index cefc9253..5f8d2661 100644 --- a/src/cairo.c +++ b/src/cairo.c @@ -816,7 +816,10 @@ cairo_get_source (cairo_t *cr) * is less than @tolerance. The default value is 0.1. A larger * value will give better performance, a smaller value, better * appearance. (Reducing the value from the default value of 0.1 - * is unlikely to improve appearance significantly.) + * is unlikely to improve appearance significantly.) The accuracy of paths + * within Cairo is limited by the precision of its internal arithmetic, and + * the prescribed @tolerance is restricted to the smallest + * representable internal value. **/ void cairo_set_tolerance (cairo_t *cr, double tolerance) |