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Add example to fl_arc docs.

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This commit is contained in:
Matthias Melcher 2024-04-14 14:09:02 +02:00
parent e9e5f4bdb1
commit 2818a36064
1 changed files with 10 additions and 4 deletions
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14
FL/fl_draw.H
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@ -623,11 +623,17 @@ inline void fl_curve(double X0, double Y0, double X1, double Y1, double X2, doub
}
/**
Add a series of points to the current path on the arc of a circle.
The arc is drawn counter-clockwise from 3 o'clock. If \p end is less than
\p start then it draws the arc in a clockwise direction. To draw an arc across
the 3 o'clock line, \p start and \p end can be greater than 360 or less than 0.
For example, to draw a counter-clockwise arc from 6 to 12 o'clock, \p start
would be -90 deg, and \p end would be at +90 deg.
You can get elliptical paths by using scale and rotate before calling fl_arc().
\param[in] x,y,r center and radius of circular arc
\param[in] start,end angles of start and end of arc measured in degrees
counter-clockwise from 3 o'clock. If \p end is less than \p start
then it draws the arc in a clockwise direction.
\param[in] x, y, r center and radius of circular arc
\param[in] start, end angles of start and end of arc measured in degrees
\image html fl_arc_xyr_diagram.png "fl_arc(x,y,r,a1,a2)"
\image latex fl_arc_xyr_diagram.png "fl_arc(x,y,r,a1,a2)" width=6cm