static IEnumerable <NXOpen.Curve> ToEdgeCurveMany(Curve curve)
{
switch (curve)
{
case LineCurve lineCurve:
yield return(ToEdgeCurve(lineCurve));
yield break;
case PolylineCurve polylineCurve:
foreach (var line in ToEdgeCurveMany(polylineCurve))
{
yield return(line);
}
yield break;
case ArcCurve arcCurve:
foreach (var arc in ToEdgeCurveMany(arcCurve))
{
yield return(arc);
}
yield break;
case PolyCurve polyCurve:
foreach (var segment in ToEdgeCurveMany(polyCurve))
{
yield return(segment);
}
yield break;
case NurbsCurve nurbsCurve:
foreach (var nurbs in CurveEncoder.ToNXCurves(nurbsCurve, UnitConverter.NoScale))
{
yield return(nurbs);
}
yield break;
default:
if (curve.HasNurbsForm() != 0)
{
var nurbsForm = curve.ToNurbsCurve();
foreach (var c in CurveEncoder.ToNXCurves(nurbsForm, UnitConverter.NoScale))
{
yield return(c);
}
}
else
{
throw new Exception($"Unable to convert {curve} to DB.Curve");
}
yield break;
}
}
public static NXOpen.DisplayableObject[] ToShape(this GeometryBase geometry, double factor)
{
switch (geometry)
{
case Point point:
return(new NXOpen.DisplayableObject[] { point.ToPoint(factor) });
case PointCloud pointCloud:
return(pointCloud.ToPoints(factor));
case Curve curve:
return(CurveEncoder.ToNXCurves(curve, factor).OfType <NXOpen.DisplayableObject>().ToArray());
//case Brep brep:
// return ToGeometryObjectMany(BrepEncoder.ToRawBrep(brep, factor)).OfType<NXOpen.GeometryObject>().ToArray();
//case Extrusion extrusion:
// return ToGeometryObjectMany(ExtrusionEncoder.ToRawBrep(extrusion, factor)).OfType<NXOpen.GeometryObject>().ToArray();
//case SubD subD:
// return ToGeometryObjectMany(SubDEncoder.ToRawBrep(subD, factor)).OfType<NXOpen.GeometryObject>().ToArray(); ;
//case Mesh mesh:
// return new NXOpen.GeometryObject[] { MeshEncoder.ToMesh(MeshEncoder.ToRawMesh(mesh, factor)) };
default:
//if (geometry.HasBrepForm)
//{
// var brepForm = Brep.TryConvertBrep(geometry);
// if (BrepEncoder.EncodeRaw(ref brepForm, factor))
// return ToGeometryObjectMany(brepForm).OfType<NXOpen.GeometryObject>().ToArray();
//}
return(new NXOpen.DisplayableObject[0]);
}
}
public static IEnumerable <NXOpen.Curve> ToNXCurves(NurbsCurve value, double factor)
{
if (value.Degree == 1)
{
var curvePoints = value.Points;
int pointCount = curvePoints.Count;
if (pointCount > 1)
{
NXOpen.Point3d end, start = curvePoints[0].Location.ToXYZ(factor);
for (int p = 1; p < pointCount; start = end, ++p)
{
end = curvePoints[p].Location.ToXYZ(factor);
yield return(WorkPart.Curves.CreateLine(start, end));
}
}
}
else if (value.Degree == 2)
{
for (int s = 0; s < value.SpanCount; ++s)
{
var segment = value.Trim(value.SpanDomain(s)) as NurbsCurve;
yield return(CurveEncoder.ToNXSpline(segment, factor));
}
}
else if (value.IsClosable(DistanceTolerance * 1.01))
{
var segments = value.DuplicateSegments();
if (segments.Length == 1)
{
if
(
value.NormalizedLengthParameter(0.5, out var mid) &&
value.Split(mid) is Curve[] half
)
{
yield return((half[0] as NurbsCurve).ToNXSpline(factor));
yield return((half[1] as NurbsCurve).ToNXSpline(factor));
}
else
{
throw new Exception("Failed to Split closed Edge");
}
}
else
{
foreach (var segment in segments)
{
yield return((segment as NurbsCurve).ToNXSpline(factor));
}
}
}
else if (value.GetNextDiscontinuity(Continuity.C1_continuous, value.Domain.Min, value.Domain.Max, out var t))
{
var splitters = new List <double>()
{
t
};
while (value.GetNextDiscontinuity(Continuity.C1_continuous, t, value.Domain.Max, out t))
{
splitters.Add(t);
}
var segments = value.Split(splitters);
foreach (var segment in segments.Cast <NurbsCurve>())
{
yield return(CurveEncoder.ToNXSpline(segment, factor));
}
}
else
{
yield return(CurveEncoder.ToNXSpline(value, factor));
}
}