/***************************************************/
public static Point PointAtParameter(this PolyCurve curve, double parameter)
{
if (parameter == 1)
{
return(curve.IEndPoint());
}
double cLength = parameter * curve.Length();
foreach (ICurve c in curve.SubParts())
{
double l = c.ILength();
if (l >= cLength)
{
return(c.IPointAtParameter(cLength / l));
}
cLength -= l;
}
return(null);
}