If the smoothing method is bezier, this indicates that the line should
be drawn as a curve, rendered as a set of quadratic splines: one spline
is drawn for the first and second line segments, one for the second and
third, and so on. Straight-line segments can be generated within a curve
by duplicating the end-points of the desired line segment. If the
smoothing method is raw, this indicates that the line should also be
drawn as a curve but where the list of coordinates is such that the
first coordinate pair (and every third coordinate pair thereafter) is a
knot point on a cubic bezier curve, and the other coordinates are
control points on the cubic bezier curve. Straight line segments can be
generated within a curve by making control points equal to their
neighbouring knot points. If the last point is a control point and not a
knot point, the point is repeated (one or two times) so that it also
becomes a knot point.
If the smoothing method is bezier, this indicates that the line should be drawn as a curve, rendered as a set of quadratic splines: one spline is drawn for the first and second line segments, one for the second and third, and so on. Straight-line segments can be generated within a curve by duplicating the end-points of the desired line segment. If the smoothing method is raw, this indicates that the line should also be drawn as a curve but where the list of coordinates is such that the first coordinate pair (and every third coordinate pair thereafter) is a knot point on a cubic bezier curve, and the other coordinates are control points on the cubic bezier curve. Straight line segments can be generated within a curve by making control points equal to their neighbouring knot points. If the last point is a control point and not a knot point, the point is repeated (one or two times) so that it also becomes a knot point.