public void DrawCurve(Pen pen, PointF[] points, int offset, int numberOfSegments, float tension = 0.5f)
{
if (points == null)
{
throw new ArgumentNullException("points");
}
if (pen == null)
{
throw new ArgumentNullException("pen");
}
if (numberOfSegments < 1)
{
throw new ArgumentException("numberOfSegments");
}
int count = points.Length;
// we need 3 points for the first curve, 2 more for each curves
// and it's possible to use a point prior to the offset (to calculate)
if (offset == 0 && numberOfSegments == 1 && count < 3)
{
throw new ArgumentException("invalid parameters");
}
if (numberOfSegments >= points.Length - offset)
{
throw new ArgumentException("offset");
}
var tangents = GraphicsPath.OpenCurveTangents(GraphicsPath.CURVE_MIN_TERMS, points, count, tension);
MakeCurve(points, tangents, offset, numberOfSegments, CurveType.Open);
StrokePen(pen);
}
