/// <summary>
/// Creates walk line representations from stair walk lines.
/// </summary>
/// <param name="exporterIFC">The exporter.</param>
/// <param name="legacyStair">The stair.</param>
/// <param name="legacyStairElem">The stair element.</param>
/// <returns>The walk line representation handles. Some of them may be null.</returns>
static IList<IFCAnyHandle> CreateWalkLineReps(ExporterIFC exporterIFC, IFCLegacyStairOrRamp legacyStair, Element legacyStairElem)
{
IList<IFCAnyHandle> walkLineReps = new List<IFCAnyHandle>();
IFCAnyHandle contextOfItemsWalkLine = exporterIFC.Get3DContextHandle("Axis");
ElementId cateId = CategoryUtil.GetSafeCategoryId(legacyStairElem);
Plane plane = new Plane(XYZ.BasisZ, XYZ.Zero);
XYZ projDir = XYZ.BasisZ;
IList<IList<Curve>> curvesArr = legacyStair.GetWalkLines();
foreach (IList<Curve> curves in curvesArr)
{
IFCAnyHandle curve = GeometryUtil.CreateIFCCurveFromCurves(exporterIFC, curves, plane, projDir);
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(curve))
{
HashSet<IFCAnyHandle> bodyItems = new HashSet<IFCAnyHandle>();
bodyItems.Add(curve);
walkLineReps.Add(RepresentationUtil.CreateShapeRepresentation(exporterIFC, legacyStairElem, cateId,
contextOfItemsWalkLine, "Axis", "Curve2D", bodyItems));
}
else
walkLineReps.Add(null);
}
return walkLineReps;
}
/// <summary>
/// Creates boundary line representations from stair boundary lines.
/// </summary>
/// <param name="exporterIFC">The exporter.</param>
/// <param name="legacyStair">The stair.</param>
/// <param name="legacyStairElem">The stair element.</param>
/// <returns>Boundary line representations.</returns>
static IList<IFCAnyHandle> CreateBoundaryLineReps(ExporterIFC exporterIFC, IFCLegacyStairOrRamp legacyStair, Element legacyStairElem)
{
IFCAnyHandle contextOfItemsBoundary = exporterIFC.Get3DContextHandle("FootPrint");
IList<IFCAnyHandle> boundaryLineReps = new List<IFCAnyHandle>();
IFCFile file = exporterIFC.GetFile();
ElementId cateId = CategoryUtil.GetSafeCategoryId(legacyStairElem);
HashSet<IFCAnyHandle> curveSet = new HashSet<IFCAnyHandle>();
IList<CurveLoop> boundaryLines = legacyStair.GetBoundaryLines();
foreach (CurveLoop curveLoop in boundaryLines)
{
Plane plane = new Plane(XYZ.BasisZ, XYZ.Zero);
foreach (Curve curve in curveLoop)
{
IFCGeometryInfo info = IFCGeometryInfo.CreateCurveGeometryInfo(exporterIFC, plane, XYZ.BasisZ, false);
ExporterIFCUtils.CollectGeometryInfo(exporterIFC, info, curve, XYZ.Zero, false);
IList<IFCAnyHandle> curves = info.GetCurves();
if (curves.Count == 1 && !IFCAnyHandleUtil.IsNullOrHasNoValue(curves[0]))
{
curveSet.Add(curves[0]);
}
}
IFCAnyHandle curveRepresentationItem = IFCInstanceExporter.CreateGeometricSet(file, curveSet);
HashSet<IFCAnyHandle> bodyItems = new HashSet<IFCAnyHandle>();
bodyItems.Add(curveRepresentationItem);
IFCAnyHandle boundaryLineRep = RepresentationUtil.CreateGeometricSetRep(exporterIFC, legacyStairElem, cateId, "FootPrint",
contextOfItemsBoundary, bodyItems);
boundaryLineReps.Add(boundaryLineRep);
}
return boundaryLineReps;
}
