path: root/rtgrpblib_draw_cubic_bezier.3

.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)