private static float GetT(this SplineBase spline, float tStart, float tEnd, Vector3 testPoint, ref int iter, float eps = 0.01f)
{
iter++;
float sqrEps = eps * eps;
Vector3 start = spline.GetPoint(tStart);
Vector3 end = spline.GetPoint(tEnd);
Vector3 toStart = start - testPoint;
Vector3 toEnd = end - testPoint;
if (toStart.sqrMagnitude < toEnd.sqrMagnitude)
{
if ((end - start).sqrMagnitude <= sqrEps)
{
return(tStart);
}
return(spline.GetT(tStart, (tStart + tEnd) / 2.0f, testPoint, ref iter, eps));
}
if ((end - start).sqrMagnitude <= sqrEps)
{
return(tEnd);
}
return(spline.GetT((tStart + tEnd) / 2.0f, tEnd, testPoint, ref iter, eps));
}