/// <summary>
/// Finds the point on this spline that minimises a given distance function
/// </summary>
/// <param name="distance"> Distance function </param>
/// <param name="iterations"> Number of iterations (accuracy). 5 is pretty good. </param>
/// <returns> Returns the time on the spline of the closest point </returns>
public override float FindClosestPoint( DistanceToPointDelegate distance, int iterations )
{
DistanceCalculator calculator = new DistanceCalculator( distance );
float closestFraction = 0;
int numControlPoints = ControlPoints.Count;
Evaluator eval = new Evaluator( );
for ( int cpIndex = 0; cpIndex < numControlPoints; ++cpIndex )
{
MakeEvaluator( ref eval, this, cpIndex );
closestFraction = calculator.GetClosestPointInInterval( eval, 1.0f, iterations );
}
return closestFraction;
}