internal static IfcIndexedPolyCurve Convert(DatabaseIfc db, PolyCurve polycurve, bool twoD)
{
double tol = db.Tolerance;
Curve[] segments = polycurve.Explode();
PolyCurve pc = new PolyCurve();
foreach (Curve s in segments)
{
if (s.IsLinear(tol))
pc.Append(new Line(s.PointAtStart, s.PointAtEnd));
else
{
Arc a = Arc.Unset;
if (s.TryGetArc(out a, tol))
pc.Append(a);
else
return null;
}
}
List<IfcSegmentIndexSelect> segs = new List<IfcSegmentIndexSelect>();
IfcCartesianPointList cpl = null;
bool closed = pc.PointAtStart.DistanceTo(pc.PointAtEnd) < tol;
if (twoD)
{
Point2d pt = new Point2d(pc.PointAtStart.X, pc.PointAtStart.Y);
int pcounter = 1;
List<Point2d> pts = new List<Point2d>();
pts.Add(pt);
IfcLineIndex li = null;
for (int icounter = 0; icounter < pc.SegmentCount; icounter++)
{
Curve c = pc.SegmentCurve(icounter);
if (c.IsLinear(tol) && c.PointAtStart.DistanceTo(c.PointAtEnd) < tol)
continue;
if (c.IsLinear(tol))
{
if (closed && icounter + 1 == segments.Length)
{
if (li != null)
li.mIndices.Add(1);
else
li = new IfcLineIndex(pcounter, 1);
}
else
{
pts.Add(new Point2d(c.PointAtEnd.X, c.PointAtEnd.Y));
if (li != null)
li.mIndices.Add(++pcounter);
else
li = new IfcLineIndex(pcounter++, pcounter);
}
}
else
{
if (li != null)
{
segs.Add(li);
li = null;
}
Point3d tp = c.PointAt(c.Domain.Mid);
pts.Add(new Point2d(tp.X, tp.Y));
if (closed && icounter + 1 == segments.Length)
segs.Add(new IfcArcIndex(pcounter++, pcounter++, 1));
else
{
pts.Add(new Point2d(c.PointAtEnd.X, c.PointAtEnd.Y));
segs.Add(new IfcArcIndex(pcounter++, pcounter++, pcounter));
}
}
}
if (li != null)
segs.Add(li);
cpl = new IfcCartesianPointList2D(db, pts.ToArray());
}
else
{
Point3d pt = pc.PointAtStart;
int pcounter = 1;
List<Point3d> pts = new List<Point3d>();
pts.Add(pt);
List<IfcSegmentIndexSelect> sis = new List<IfcSegmentIndexSelect>(segments.Length);
IfcLineIndex li = null;
for (int icounter = 0; icounter < pc.SegmentCount; icounter++)
{
Curve c = pc.SegmentCurve(icounter);
if (c.IsLinear(tol) && c.PointAtStart.DistanceTo(c.PointAtEnd) < tol)
continue;
if (c.IsLinear(tol))
{
if (closed && icounter + 1 == segments.Length)
{
if (li != null)
li.mIndices.Add(0);
else
li = new IfcLineIndex(pcounter, 0);
}
else
{
pts.Add(c.PointAtEnd);
if (li != null)
li.mIndices.Add(++pcounter);
else
li = new IfcLineIndex(pcounter++, pcounter);
}
}
else
{
if (li != null)
{
segs.Add(li);
li = null;
}
pts.Add(c.PointAt(c.Domain.Mid));
if (closed && icounter + 1 == segments.Length)
segs.Add(new IfcArcIndex(pcounter++, pcounter, 0));
else
{
pts.Add(c.PointAtEnd);
segs.Add(new IfcArcIndex(pcounter++, pcounter++, pcounter));
}
}
}
if (li != null)
segs.Add(li);
cpl = new IfcCartesianPointList3D(db, pts.ToArray());
}
return new IfcIndexedPolyCurve(cpl, segs) { };
}
internal IfcCompositeCurve(DatabaseIfc db, PolyCurve plc, bool twoD)
: base(db)
{
mSegments = new List<int>(plc.SegmentCount);
IfcCartesianPoint curr = null;
for (int icounter = 0; icounter < plc.SegmentCount; icounter++)
mSegments.Add(new IfcCompositeCurveSegment(db, plc.SegmentCurve(icounter), true, IfcTransitionCode.CONTINUOUS, twoD, curr, out curr).mIndex);
}