/// <summary>
/// Should solve
/// </summary>
/// <param name="c"></param>
/// <param name="t0"></param>
/// <param name="distance"></param>
/// <returns></returns>
public static double PointAtDistanceFrom(this ICurve c, double t0, double distance)
{
Func <double, double> objFunc = t1 =>
{
var length3 = t0 < t1?c.GetLength3(t0, t1) : c.GetLength3(t1, t0);
return(length3 - Math.Abs(distance));
};
var domain = c.Domain();
var min = distance < 0.0 ? 0.8 * domain[0] : t0;
var max = distance < 0.0 ? t0 : 1.2 * domain[1];
var solver = new BrentSearch(objFunc, min, max);
solver.FindRoot();
var sol = solver.Solution;
return(sol);
}
/// <summary>
/// Return the length of the curve between the start
/// and end parameters.
/// </summary>
/// <param name="curve"></param>
/// <returns></returns>
public static double Length(this ICurve curve)
{
bool isPeriodic;
double end;
bool isClosed;
double start;
curve.GetEndParams(out start, out end, out isClosed, out isPeriodic);
return(curve.GetLength3(start, end));
}
