/// <summary>
/// Constructs a point by projecting a point on a curve which which closest to the curve
/// </summary>
/// <param name="curve">the curve on which the projection is to be made.</param>
/// <returns></returns>
public DSPoint Project(DSCurve curve)
{
if (curve == null)
{
throw new ArgumentNullException("curve");
}
var pt = curve.Project(this);
pt.Context = curve;
double param = curve.ParameterAtPoint(pt);
pt.T = param;
pt.Distance = curve.DistanceAtParameter(param);
pt.ReferencePoint = this;
pt.Persist();
return(pt);
}
/// <summary>
/// Constructs a point at a given parameter on the input curve.
/// </summary>
/// <param name="contextCurve">Input curve</param>
/// <param name="parameter">Parameter value.</param>
/// <returns>Point</returns>
public static DSPoint AtParameter(DSCurve contextCurve, double parameter)
{
if (contextCurve == null)
{
throw new ArgumentNullException("contextCurve");
}
var pt = contextCurve.PointAtParameter(parameter);
if (null == pt)
{
return(null);
}
pt.Context = contextCurve;
pt.T = parameter;
pt.Distance = contextCurve.DistanceAtParameter(parameter);
pt.Persist();
return(pt);
}