/// <summary> /// Get the handles of Grid Axes. /// </summary> /// <param name="exporterIFC">The ExporterIFC object.</param> /// <param name="sameDirectionAxes">The grid axes in the same direction of one level.</param> /// <param name="representations">The representation of grid axis.</param> /// <returns>The list of handles of grid axes.</returns> private static List <IFCAnyHandle> CreateIFCGridAxisAndRepresentations(ExporterIFC exporterIFC, ProductWrapper productWrapper, IList <Grid> sameDirectionAxes, IList <IFCAnyHandle> representations, GridRepresentationData gridRepresentationData) { if (sameDirectionAxes.Count == 0) { return(null); } IDictionary <ElementId, List <IFCAnyHandle> > gridAxisMap = new Dictionary <ElementId, List <IFCAnyHandle> >(); IDictionary <ElementId, List <IFCAnyHandle> > gridRepMap = new Dictionary <ElementId, List <IFCAnyHandle> >(); IFCFile ifcFile = exporterIFC.GetFile(); Grid baseGrid = sameDirectionAxes[0]; Transform lcs = Transform.Identity; List <IFCAnyHandle> ifcGridAxes = new List <IFCAnyHandle>(); foreach (Grid grid in sameDirectionAxes) { // Because the IfcGrid is a collection of Revit Grids, any one of them can override the IFC CAD Layer. // We will take the first name, and not do too much checking. if (string.IsNullOrWhiteSpace(gridRepresentationData.m_IFCCADLayer)) { ParameterUtil.GetStringValueFromElementOrSymbol(grid, "IFCCadLayer", out gridRepresentationData.m_IFCCADLayer); } // Get the handle of curve. XYZ projectionDirection = lcs.BasisZ; IFCAnyHandle axisCurve; if (ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView) { axisCurve = GeometryUtil.CreatePolyCurveFromCurve(exporterIFC, grid.Curve, lcs, projectionDirection); } else { IFCGeometryInfo info = IFCGeometryInfo.CreateCurveGeometryInfo(exporterIFC, lcs, projectionDirection, false); ExporterIFCUtils.CollectGeometryInfo(exporterIFC, info, grid.Curve, XYZ.Zero, false); IList <IFCAnyHandle> curves = info.GetCurves(); if (curves.Count != 1) { throw new Exception("IFC: expected 1 curve when export curve element."); } axisCurve = curves[0]; } bool sameSense = true; if (baseGrid.Curve is Line) { Line baseLine = baseGrid.Curve as Line; Line axisLine = grid.Curve as Line; sameSense = (axisLine.Direction.IsAlmostEqualTo(baseLine.Direction)); } IFCAnyHandle ifcGridAxis = IFCInstanceExporter.CreateGridAxis(ifcFile, grid.Name, axisCurve, sameSense); ifcGridAxes.Add(ifcGridAxis); HashSet <IFCAnyHandle> AxisCurves = new HashSet <IFCAnyHandle>(); AxisCurves.Add(axisCurve); IFCAnyHandle repItemHnd = IFCInstanceExporter.CreateGeometricCurveSet(ifcFile, AxisCurves); // get the weight and color from the GridType to create the curve style. GridType gridType = grid.Document.GetElement(grid.GetTypeId()) as GridType; IFCData curveWidth = null; if (ExporterCacheManager.ExportOptionsCache.ExportAnnotations) { int outWidth; double width = (ParameterUtil.GetIntValueFromElement(gridType, BuiltInParameter.GRID_END_SEGMENT_WEIGHT, out outWidth) != null) ? outWidth : 1; curveWidth = IFCDataUtil.CreateAsPositiveLengthMeasure(width); } if (!ExporterCacheManager.ExportOptionsCache.ExportAs4ReferenceView) { int outColor; int color = (ParameterUtil.GetIntValueFromElement(gridType, BuiltInParameter.GRID_END_SEGMENT_COLOR, out outColor) != null) ? outColor : 0; double blueVal = 0.0; double greenVal = 0.0; double redVal = 0.0; GeometryUtil.GetRGBFromIntValue(color, out blueVal, out greenVal, out redVal); IFCAnyHandle colorHnd = IFCInstanceExporter.CreateColourRgb(ifcFile, null, redVal, greenVal, blueVal); BodyExporter.CreateCurveStyleForRepItem(exporterIFC, repItemHnd, curveWidth, colorHnd); } HashSet <IFCAnyHandle> curveSet = new HashSet <IFCAnyHandle>(); curveSet.Add(repItemHnd); gridRepresentationData.m_Grids.Add(grid); gridRepresentationData.m_curveSets.Add(curveSet); } return(ifcGridAxes); }