public static Section CreateSection(Brep brp, Plane pln)
{
var sec = new Section();
string id = "P101";
var tx = Transform.ChangeBasis(Plane.WorldYZ, Util.SofiSectionBasePlane) * Transform.ChangeBasis(Plane.WorldXY, pln);
int pointIndex = 0;
foreach (var lp in brp.Loops)
{
var crv = lp.To3dCurve();
crv.Transform(tx);
var polyLine = Util.CreatePolyLine(crv);
if (polyLine != null)
{
var secLp = new SectionLoop();
secLp.Type = lp.LoopType == BrepLoopType.Outer ? SectionLoopType.Outer : SectionLoopType.Inner;
int firstIndex = -1;
int i = 0;
foreach (var pt in polyLine)
{
if (i < polyLine.Count - 1)
{
var secPt = new SectionPoint()
{
Id = id,
EType = EdgeTransitionType.Fillet,
EdgeTransitionValue1 = 0.0,
EdgeTransitionValue2 = 0.0,
Y = pt.Y,
Z = pt.Z,
};
id = Util.CountStringUp(id);
if (i++ == 0)
{
firstIndex = pointIndex;
}
secLp.Add(pointIndex++);
sec.Points.Add(secPt);
}
}
if (firstIndex > -1)
{
secLp.Add(firstIndex);
}
sec.Loops.Add(secLp);
}
}
return(sec);
}
public SectionLoop Duplicate()
{
var res = new SectionLoop()
{
Type = Type,
MaterialId = MaterialId,
ConstructionStage = ConstructionStage,
};
foreach (var i in this)
{
res.Add(i);
}
return(res);
}
private PolyCurve GetPolyCurve(SectionLoop loop)
{
var curve = new PolyCurve();
if (loop.Count < 2)
{
return(curve);
}
var lines = new List <Line>();
var fillets = new Dictionary <int, NurbsCurve>();
var chamfers = new Dictionary <int, Line>();
// create lines
Point3d p1 = new Point3d(0.0, Points[loop[0]].Y, Points[loop[0]].Z);
for (int i = 1; i < loop.Count; ++i)
{
Point3d p2 = new Point3d(0.0, Points[loop[i]].Y, Points[loop[i]].Z);
lines.Add(new Line(p1, p2));
p1 = p2;
}
// create Edge Transitions
for (int i = 0; i < lines.Count; ++i)
{
var pt = Points[loop[i]];
// create EdgeTransition
if ((pt.EType == EdgeTransitionType.Fillet && pt.EdgeTransitionValue1 > 1.0E-6) || (pt.EType == EdgeTransitionType.Chamfer && pt.EdgeTransitionValue1 > 1.0E-6 && pt.EdgeTransitionValue2 > 1.0E-6))
{
var l1 = i == 0 ? lines.Last() : lines[i - 1];
var l2 = lines[i];
if (l1.Length > 1.0E-6 && l2.Length > 1.0E-6)
{
bool writeBackLines = false;
if (pt.EType == EdgeTransitionType.Fillet)
{
var arc = CreateTrimFillet(pt.EdgeTransitionValue1, ref l1, ref l2);
if (arc.Radius > 1.0E-3)
{
fillets.Add(i, arc.ToNurbsCurve());
writeBackLines = true;
}
}
if (pt.EType == EdgeTransitionType.Chamfer)
{
var chamfer = CreateTrimChamfer(pt.EdgeTransitionValue1, pt.EdgeTransitionValue2, ref l1, ref l2);
if (chamfer.Length > 1.0E-6)
{
chamfers.Add(i, chamfer);
writeBackLines = true;
}
}
if (writeBackLines)
{
lines[i] = l2;
if (i == 0)
{
lines[lines.Count - 1] = l1;
}
else
{
lines[i - 1] = l1;
}
}
}
}
}
// create polycurve
for (int i = 0; i < lines.Count; ++i)
{
if (fillets.TryGetValue(i, out var fillet))
{
curve.Append(fillet);
}
if (chamfers.TryGetValue(i, out var chamfer))
{
curve.Append(chamfer);
}
if (i < lines.Count - 1 && lines[i].Length > 1.0E-6)
{
curve.Append(lines[i]);
}
}
if (curve.PointAtStart.DistanceTo(curve.PointAtEnd) > 1.0E-6)
{
curve.Append(new Line(curve.PointAtEnd, curve.PointAtStart));
}
return(curve);
}