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add a utility function to Canvas to compute distance from a point to a line segment

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Paul Davis 2013-12-09 13:35:07 -05:00
parent 59da788793
commit 75b25cd913
2 changed files with 68 additions and 0 deletions
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libs/canvas/canvas/utils.h
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@ -28,5 +28,7 @@ namespace ArdourCanvas {
extern Color rgba_to_color (double r, double g, double b, double a);
extern void set_source_rgba (Cairo::RefPtr<Cairo::Context>, Color);
Distance distance_to_segment_squared (Duple const & p, Duple const & p1, Duple const & p2, double& t, Duple& at);
}