public override string ToString()
{
return
(StartPosition.ToString() +
StartTangent.ToString() +
EndPosition.ToString() +
EndTangent.ToString());
}
public override void ToX(XElement xe)
{
xe.Add(new XAttribute("Periodic", Periodic));
xe.Add(new XAttribute("HasFitPoints", HasFitPoints));
xe.Add(NurbsData.ToX());
if (HasFitPoints)
{
var e = new XElement("FitPoints",
new XAttribute("TangentsExist", TangentsExist));
xe.Add(e);
if (TangentsExist)
{
e.Add(new XAttribute("Start", StartTangent.ToString()));
e.Add(new XAttribute("End", EndTangent.ToString()));
}
foreach (var pt in FitPoints)
{
e.Add(pt.ToX("Point"));
}
}
MakeLayer(xe);
}
internal override bool TrySetPair(DxfCodePair pair)
{
switch (pair.Code)
{
case 94:
Degree = pair.IntegerValue;
break;
case 73:
IsRational = BoolShort(pair.ShortValue);
break;
case 74:
IsPeriodic = BoolShort(pair.ShortValue);
break;
case 95:
var _knotCount = pair.IntegerValue;
break;
case 96:
var _controlPointCount = pair.IntegerValue;
break;
case 40:
Knots.Add(pair.DoubleValue);
break;
case 10:
ControlPoints.Add(new DxfControlPoint(new DxfPoint(pair.DoubleValue, 0.0, 0.0)));
break;
case 20:
ControlPoints[ControlPoints.Count - 1] = new DxfControlPoint(ControlPoints[ControlPoints.Count - 1].Point.WithUpdatedY(pair.DoubleValue));
break;
case 42:
ControlPoints[_currentWeight] = new DxfControlPoint(ControlPoints[_currentWeight].Point, pair.DoubleValue);
_currentWeight++;
break;
case 97:
var _fitPointCount = pair.IntegerValue;
break;
case 11:
FitPoints.Add(new DxfPoint(pair.DoubleValue, 0.0, 0.0));
break;
case 21:
FitPoints[FitPoints.Count - 1] = FitPoints[FitPoints.Count - 1].WithUpdatedY(pair.DoubleValue);
break;
case 12:
StartTangent = StartTangent.WithUpdatedX(pair.DoubleValue);
break;
case 22:
StartTangent = StartTangent.WithUpdatedY(pair.DoubleValue);
break;
case 13:
EndTangent = EndTangent.WithUpdatedX(pair.DoubleValue);
break;
case 23:
EndTangent = EndTangent.WithUpdatedY(pair.DoubleValue);
break;
default:
return(false);
}
return(true);
}
