/// <summary>
/// Find the tension needed for the catenary to pass through a specific point in space.
/// </summary>
/// <param name="point"></param>
public void SetClearancePoint(Vector2 point)
{
if (ContainsX(point.X))
{
double x = point.X - StartPosition.X;
double D = StartPosition.Y + StepY / StepX * x - point.Y;
HorizontalTension = CatenaryCalculator.SetSagAtX(Step, weight, D, x, 1e-3);
}
}
public Catenary(ISpan span, double weight, double H)
: base(span)
{
this.weight = weight;
this.horizontalTension = H;
this.RelativeCenter = CatenaryCalculator.CenterPosition(Step, this.weight, H);
this.SpanChanged += new EventArgs <Span> .Handler(Catenary_SpanChanged);
this.CatenaryChanged += new EventArgs <Catenary> .Handler(Catenary_CatenaryChanged);
}
/// <summary>
/// Helper function that calculates the catenary lowest point and triggers property changed notifiers
/// </summary>
protected internal void CalculateCenter()
{
this.RelativeCenter = CatenaryCalculator.CenterPosition(Step, weight, horizontalTension);
OnPropertyChanged(() => CenterX);
OnPropertyChanged(() => CenterY);
}