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+.TH RTGRPBLIB_DRAW_CUBIC_BEZIER 3 LIBRIFUNKTIONSTECKENSNITTSGLYFRASTERISERINGSPROGRAMBIBLIOTEKET
+.SH NAME
+rtgrpblib_draw_cubic_bezier - Draw a cubic Bézier curve
+
+.SH DESCRIPTION
+.LP
+.nf
+#include <librifunktionsteckensnittsglyfrasteriseringsprogrambiblioteket.h>
+
+void rtgrpblib_draw_cubic_bezier(RTGRPBLIB_RASTER *\fIraster\fP,
+                                  double \fIx1\fP, double \fIy1\fP,
+                                  double \fIx2\fP, double \fIy2\fP,
+                                  double \fIx3\fP, double \fIy3\fP,
+                                  double \fIx4\fP, double \fIy4\fP);
+.fi
+.PP
+Link with
+.IR "-lrifunktionsteckensnittsglyfrasteriseringsprogrambiblioteket -lm" .
+
+.SH DESCRIPTION
+The
+.BR rtgrpblib_draw_cubic_bezier ()
+function draws onto
+.I raster
+a cubic Bézier curve, as part of a contour, from
+.RI ( x1 ,
+.IR y1 )
+to
+.RI ( x4 ,
+.IR y4 )
+with
+.RI ( x2 ,
+.IR y2 )
+and
+.RI ( x4 ,
+.IR y4 )
+as the additional control points.
+.PP
+The function draws the linear interpolant of corresponding points in
+the two quadratic Bézier curves made of the of the three first
+control points and the three last control points respectively.
+
+.SH RETURN VALUES
+None.
+
+.SH ERRORS
+None.
+
+.SH SEE ALSO
+.BR librifunktionsteckensnittsglyfrasteriseringsprogrambiblioteket (7),
+.BR rtgrpblib_create_raster (3),
+.BR rtgrpblib_fill_shapes (3),
+.BR rtgrpblib_draw_linear_bezier (3),
+.BR rtgrpblib_draw_quadratic_bezier (3),
+.BR rtgrpblib_draw_circular_arc (3)