private Brep OffsetRevolvedShell(List <Surface> surfs, double thickness, bool flipNorm, bool inner, Point3D relOrigin)
{
var hasOffset = Math.Abs(thickness) > 0.0;
var outerInner = GetOuterInnerSurfaces(surfs, relOrigin);
var bound = (inner) ? outerInner.Item1 : outerInner.Item2;
var curves = bound.Section(Plane.XZ, 0.0001).ToList();
curves = UtilityEx.GetConnectedCurves(curves, 0.0001).ToList();
var flat = curves.Any(c => c.IsInPlane(Plane.XY, 0.0001));
var curve = (flat)
? curves.OrderByDescending(c => c.StartPoint.DistanceTo(Point3D.Origin)).Last()
: curves.OrderByDescending(c => c.StartPoint.DistanceTo(Point3D.Origin)).First();
var direction = 1.0;
if (inner)
{
curve.Reverse();
direction *= -1.0;
}
if ((curve.StartPoint.X > 0.0 && curve.EndPoint.X < 0.0) ||
(curve.StartPoint.X < 0.0 && curve.EndPoint.X > 0.0))
{
var len = curve.Length();
curve.SubCurve(curve.StartPoint, curve.GetPointsByLength(len / 2.0)[1], out curve);
}
var reg = new Region(curve);
if (hasOffset && flat)
{
reg.Translate(Vector3D.AxisZ * direction * thickness);
}
else if (hasOffset)
{
reg = new Region(curve.Offset(direction * thickness, Vector3D.AxisY, 0.0001, true));
}
var b = reg.RevolveAsBrep(0.0, 2.0 * Math.PI, Vector3D.AxisZ, Point3D.Origin, 0.0001);
if ((flipNorm ^ inner) && !flat)
{
b.FlipNormal();
}
return(b);
}
private bool SetIntersectionCurves(CaseArgs args)
{
if (!GetIntersectionCurves(args.Shell, args.Neck, out var tmpCurves))
{
return(false);
}
tmpCurves = UtilityEx.GetConnectedCurves(tmpCurves, 0.0001).ToList();
var ordered = tmpCurves.OrderByDescending(c => c.StartPoint.X);
_intersectionCurves.Add(ordered.Last());
if (tmpCurves.Count > 1)
{
_intersectionCurves.Add(ordered.First());
}
_intersectOrigin = FindCenter(_innerIntersectionCurve.GetIndividualCurves());
_relOrigin = new Point3D(0, 0, _intersectOrigin.Z);
return(true);
}