/// <summary>
/// Overrides <see cref="CADability.Curve2D.GeneralCurve2D.GetModified (ModOp2D)"/>
/// </summary>
/// <param name="m"></param>
/// <returns></returns>
public override ICurve2D GetModified(ModOp2D m)
{
// es ist wichtig hier zu überschreiben, die Basisfunktionalität macht aus einem 360°
// Kreisbogen einen Kreis und der Anfangspunkt geht verloren. Diese Information ist aber
// für die Edges wichtig.
if (m.IsIsogonal)
{
bool cc = sweep > 0.0;
if (m.Determinant < 0.0)
{
cc = !cc;
}
Arc2D res = new Arc2D(m * Center, m.Factor * Radius, m * StartPoint, m * EndPoint, cc);
if (m.Determinant < 0.0)
{
res.sweep = -sweep; // das schaltet die Fälle aus, wo Unsicherheit zwischen 0 und 360° besteht
}
else
{
res.sweep = sweep;
}
return(res);
}
else
{
//double sw = sweep;
//if (m.Determinant < 0.0) sw = -sw;
GeoVector2D majorAxis;
GeoVector2D minorAxis;
GeoPoint2D left, right, bottom, top;
bool cc = sweep > 0.0;
if (m.Determinant < 0.0)
{
cc = !cc;
}
majorAxis = m * (Radius * GeoVector2D.XAxis);
minorAxis = m * (Radius * GeoVector2D.YAxis);
if (Math.Abs(majorAxis.Length - minorAxis.Length) < (majorAxis.Length + minorAxis.Length) * 1e-6)
{
return(new Arc2D(m * Center, Math.Abs(m.Determinant * Radius), m * StartPoint, m * EndPoint, cc));
}
Geometry.PrincipalAxis(m * Center, m * (Radius * GeoVector2D.XAxis), m * (Radius * GeoVector2D.YAxis), out majorAxis, out minorAxis, out left, out right, out bottom, out top, false);
// geändert wg. Fehler in IsIsogonal Fall, noch nicht getestet
return(EllipseArc2D.Create(m * Center, majorAxis, minorAxis, m * StartPoint, m * EndPoint, cc));
//if (m.Determinant < 0.0)
//{
// return new EllipseArc2D(m * Center, m * (Radius * GeoVector2D.XAxis), m * (Radius * GeoVector2D.YAxis), start + sweep, sw, left, right, bottom, top);
//}
//else
//{
// return new EllipseArc2D(m * Center, m * (Radius * GeoVector2D.XAxis), m * (Radius * GeoVector2D.YAxis), start, sw, left, right, bottom, top);
//}
}
}
/// <summary>
/// Overrides <see cref="CADability.Curve2D.GeneralCurve2D.GetModified (ModOp2D)"/>
/// </summary>
/// <param name="m"></param>
/// <returns></returns>
public override ICurve2D GetModified(ModOp2D m)
{
#if DEBUG
////DebuggerContainer dc = new DebuggerContainer();
////GeoPoint[] tst = new GeoPoint[10];
////for (int i = 0; i < 10; i++)
////{
//// tst[i] = new GeoPoint(PointAt(i / 9.0));
////}
////Polyline pl = Polyline.Construct();
////try
////{
//// pl.SetPoints(tst, false);
//// dc.Add(pl, 0);
////}
////catch { }
////EllipseArc2D dbg = EllipseArc2D.Create(m * center, m * majorAxis, m * minorAxis, m * StartPoint, m * EndPoint, counterClock);
////for (int i = 0; i < 10; i++)
////{
//// tst[i] = new GeoPoint(dbg.PointAt(i / 9.0));
////}
////pl = Polyline.Construct();
////try
////{
//// pl.SetPoints(tst, false);
//// dc.Add(pl, 1);
////}
////catch { }
#endif
EllipseArc2D res = EllipseArc2D.Create(m * center, m * majorAxis, m * minorAxis, m * StartPoint, m * EndPoint, counterClock);
if (Math.Abs(res.sweepPar) < 1e-6 && Math.Abs(this.sweepPar) > Math.PI * 2.0 - 1e-6)
{
res.sweepPar = this.sweepPar;
}
return(res);
}