protected override void Process(IFCAnyHandle ifcCurve)
{
base.Process(ifcCurve);
IList <IFCAnyHandle> points = IFCAnyHandleUtil.GetAggregateInstanceAttribute <List <IFCAnyHandle> >(ifcCurve, "Points");
int numPoints = points.Count;
if (numPoints < 2)
{
string msg = "IfcPolyLine had " + numPoints + ", expected at least 2, ignoring";
Importer.TheLog.LogError(Id, msg, false);
return;
}
IList <XYZ> pointXYZs = new List <XYZ>();
foreach (IFCAnyHandle point in points)
{
XYZ pointXYZ = IFCPoint.ProcessScaledLengthIFCCartesianPoint(point);
pointXYZs.Add(pointXYZ);
}
if (pointXYZs.Count != numPoints)
{
Importer.TheLog.LogError(Id, "Some of the IFC points cannot be converted to Revit points", true);
}
CurveLoop = IFCGeometryUtil.CreatePolyCurveLoop(pointXYZs, points, Id, false);
Curve = IFCGeometryUtil.CreateCurveFromPolyCurveLoop(CurveLoop, pointXYZs);
}
private void CreateBoxShape(IFCImportShapeEditScope shapeEditScope, Transform scaledLcs)
{
using (IFCImportShapeEditScope.IFCContainingRepresentationSetter repSetter = new IFCImportShapeEditScope.IFCContainingRepresentationSetter(shapeEditScope, this))
{
// Get the material and graphics style based in the "Box" sub-category of Generic Models.
// We will create the sub-category if this is our first time trying to use it.
// Note that all bounding boxes are controlled by a sub-category of Generic Models. We may revisit that decision later.
// Note that we hard-wire the identifier to "Box" because older files may have bounding box items in an obsolete representation.
SolidOptions solidOptions = null;
Category bboxCategory = IFCCategoryUtil.GetSubCategoryForRepresentation(shapeEditScope.Document, Id, IFCRepresentationIdentifier.Box);
if (bboxCategory != null)
{
ElementId materialId = (bboxCategory.Material == null) ? ElementId.InvalidElementId : bboxCategory.Material.Id;
GraphicsStyle graphicsStyle = bboxCategory.GetGraphicsStyle(GraphicsStyleType.Projection);
ElementId gstyleId = (graphicsStyle == null) ? ElementId.InvalidElementId : graphicsStyle.Id;
solidOptions = new SolidOptions(materialId, gstyleId);
}
Solid bboxSolid = IFCGeometryUtil.CreateSolidFromBoundingBox(scaledLcs, BoundingBox, solidOptions);
if (bboxSolid != null)
{
IFCSolidInfo bboxSolidInfo = IFCSolidInfo.Create(Id, bboxSolid);
shapeEditScope.AddGeometry(bboxSolidInfo);
}
}
return;
}
private IList <CurveLoop> GetTransformedCurveLoopsFromSimpleProfile(IFCSimpleProfile simpleSweptArea, Transform unscaledLcs, Transform scaledLcs)
{
IList <CurveLoop> loops = new List <CurveLoop>();
// It is legal for simpleSweptArea.Position to be null, for example for IfcArbitraryClosedProfileDef.
Transform unscaledSweptAreaPosition =
(simpleSweptArea.Position == null) ? unscaledLcs : unscaledLcs.Multiply(simpleSweptArea.Position);
Transform scaledSweptAreaPosition =
(simpleSweptArea.Position == null) ? scaledLcs : scaledLcs.Multiply(simpleSweptArea.Position);
CurveLoop currLoop = simpleSweptArea.OuterCurve;
if (currLoop == null || currLoop.Count() == 0)
{
Importer.TheLog.LogError(simpleSweptArea.Id, "No outer curve loop for profile, ignoring.", false);
return(null);
}
loops.Add(IFCGeometryUtil.CreateTransformed(currLoop, Id, unscaledSweptAreaPosition, scaledSweptAreaPosition));
if (simpleSweptArea.InnerCurves != null)
{
foreach (CurveLoop innerCurveLoop in simpleSweptArea.InnerCurves)
{
loops.Add(IFCGeometryUtil.CreateTransformed(innerCurveLoop, Id, unscaledSweptAreaPosition, scaledSweptAreaPosition));
}
}
return(loops);
}
protected override void Process(IFCAnyHandle ifcCurve)
{
base.Process(ifcCurve);
KnotMultiplicities = IFCAnyHandleUtil.GetAggregateIntAttribute <List <int> >(ifcCurve, "KnotMultiplicities");
Knots = IFCAnyHandleUtil.GetAggregateDoubleAttribute <List <double> >(ifcCurve, "Knots");
if (KnotMultiplicities == null || Knots == null)
{
Importer.TheLog.LogError(ifcCurve.StepId, "Cannot find the KnotMultiplicities or Knots attribute of this IfcBSplineCurveWithKnots", true);
}
if (KnotMultiplicities.Count != Knots.Count)
{
Importer.TheLog.LogError(ifcCurve.StepId, "The number of knots and knot multiplicities are not the same", true);
}
IList <double> revitKnots = IFCGeometryUtil.ConvertIFCKnotsToRevitKnots(KnotMultiplicities, Knots);
Curve nurbsSpline = NurbSpline.CreateCurve(Degree, revitKnots, ControlPointsList);
SetCurve(nurbsSpline);
if (nurbsSpline == null)
{
Importer.TheLog.LogWarning(ifcCurve.StepId, "Cannot get the curve representation of this IfcCurve", false);
}
}
/// <summary>
/// Return geometry for a particular representation item.
/// </summary>
/// <param name="shapeEditScope">The geometry creation scope.</param>
/// <param name="unscaledLcs">Local coordinate system for the geometry, without scale.</param>
/// <param name="scaledLcs">Local coordinate system for the geometry, including scale, potentially non-uniform.</param>
/// <param name="guid">The guid of an element for which represntation is being created.</param>
/// <returns>Zero or more created geometries.</returns>
protected override IList <GeometryObject> CreateGeometryInternal(
IFCImportShapeEditScope shapeEditScope, Transform unscaledLcs, Transform scaledLcs, string guid)
{
Transform unscaledSweptDiskPosition = (unscaledLcs == null) ? Transform.Identity : unscaledLcs;
Transform scaledSweptDiskPosition = (scaledLcs == null) ? Transform.Identity : scaledLcs;
CurveLoop trimmedDirectrix = IFCGeometryUtil.TrimCurveLoop(Id, Directrix, StartParameter, EndParameter);
if (trimmedDirectrix == null)
{
return(null);
}
CurveLoop trimmedDirectrixInWCS = IFCGeometryUtil.CreateTransformed(trimmedDirectrix, Id, unscaledSweptDiskPosition, scaledSweptDiskPosition);
// Create the disk.
Curve firstCurve = null;
foreach (Curve curve in trimmedDirectrixInWCS)
{
firstCurve = curve;
break;
}
double startParam = 0.0;
IList <CurveLoop> profileCurveLoops = CreateProfileCurveLoopsForDirectrix(firstCurve, out startParam);
if (profileCurveLoops == null)
{
return(null);
}
SolidOptions solidOptions = new SolidOptions(GetMaterialElementId(shapeEditScope), shapeEditScope.GraphicsStyleId);
IList <GeometryObject> myObjs = new List <GeometryObject>();
try
{
Solid sweptDiskSolid = GeometryCreationUtilities.CreateSweptGeometry(trimmedDirectrixInWCS, 0, startParam, profileCurveLoops,
solidOptions);
if (sweptDiskSolid != null)
{
myObjs.Add(sweptDiskSolid);
}
}
catch (Exception ex)
{
// If we can't create a solid, we will attempt to split the Solid into valid pieces (that will likely have some overlap).
if (ex.Message.Contains("self-intersections"))
{
Importer.TheLog.LogWarning(Id, "The IfcSweptDiskSolid definition does not define a valid solid, likely due to self-intersections or other such problems; the profile probably extends too far toward the inner curvature of the sweep path. Creating the minimum number of solids possible to represent the geometry.", false);
myObjs = SplitSweptDiskIntoValidPieces(trimmedDirectrixInWCS, profileCurveLoops, solidOptions);
}
else
{
throw ex;
}
}
return(myObjs);
}
private void CreateLineSegments(CurveLoop curveLoop, IList <XYZ> currentSegments)
{
if (currentSegments.Count > 0)
{
IFCGeometryUtil.AppendPolyCurveToCurveLoop(curveLoop, currentSegments, null, Id, false);
currentSegments.Clear();
}
}
/// <summary>
/// Set the representation of the curve based on one CurveLoop.
/// </summary>
/// <param name="curveLoop">The one CurveLoop.</param>
/// <param name="pointXYZs">The point list that created this CurveLoop.</param>
/// <remarks>The point list is used to potentially collapse a series of
/// line segments into one.</remarks>
public void SetCurveLoop(CurveLoop curveLoop, IList <XYZ> pointXYZs)
{
SetCurveLoop(curveLoop);
if (Curve == null)
{
Curve = IFCGeometryUtil.CreateCurveFromPolyCurveLoop(GetTheCurveLoop(), pointXYZs);
}
}
protected List <GeometryObject> CreateConformalGeometryIfPossible(
IFCImportShapeEditScope shapeEditScope, Transform unscaledLcs)
{
Transform unscaledSweptDiskPosition = (unscaledLcs == null) ? Transform.Identity : unscaledLcs;
IList <CurveLoop> trimmedDirectrices = IFCGeometryUtil.TrimCurveLoops(Id, Directrix, StartParameter, EndParameter);
if (trimmedDirectrices == null)
{
return(null);
}
List <GeometryObject> myObjs = null;
bool isIdentity = unscaledSweptDiskPosition.IsIdentity;
foreach (CurveLoop trimmedDirectrix in trimmedDirectrices)
{
// Create the disk.
Curve firstCurve = null;
foreach (Curve curve in trimmedDirectrix)
{
firstCurve = curve;
break;
}
double startParam = 0.0;
IList <CurveLoop> profileCurveLoops = CreateProfileCurveLoopsForDirectrix(firstCurve, out startParam);
if (profileCurveLoops == null)
{
return(null);
}
SolidOptions solidOptions = new SolidOptions(GetMaterialElementId(shapeEditScope), shapeEditScope.GraphicsStyleId);
myObjs = new List <GeometryObject>();
try
{
Solid sweptDiskSolid = GeometryCreationUtilities.CreateSweptGeometry(trimmedDirectrix, 0, startParam, profileCurveLoops,
solidOptions);
if (!isIdentity)
{
sweptDiskSolid = SolidUtils.CreateTransformed(sweptDiskSolid, unscaledSweptDiskPosition);
}
if (sweptDiskSolid != null)
{
myObjs.Add(sweptDiskSolid);
}
}
catch
{
return(null);
}
}
return(myObjs);
}
protected override void Process(IFCAnyHandle ifcCurve)
{
base.Process(ifcCurve);
IList <IFCAnyHandle> points = IFCAnyHandleUtil.GetAggregateInstanceAttribute <List <IFCAnyHandle> >(ifcCurve, "Points");
int numPoints = points.Count;
if (numPoints < 2)
{
string msg = "IfcPolyLine had " + numPoints + ", expected at least 2, ignoring";
Importer.TheLog.LogError(Id, msg, false);
return;
}
IList <XYZ> pointXYZs = new List <XYZ>();
foreach (IFCAnyHandle point in points)
{
XYZ pointXYZ = IFCPoint.ProcessScaledLengthIFCCartesianPoint(point);
pointXYZs.Add(pointXYZ);
}
if (pointXYZs.Count != numPoints)
{
Importer.TheLog.LogError(Id, "Some of the IFC points cannot be converted to Revit points", true);
}
CurveLoop = IFCGeometryUtil.CreatePolyCurveLoop(pointXYZs, points, Id, false);
if (pointXYZs.Count == 2)
{
Curve = Line.CreateBound(pointXYZs[0], pointXYZs[1]);
}
else
{
// if we go here we are sure that the number of point must be at least 3
XYZ firstPoint = pointXYZs[0];
XYZ secondPoint = pointXYZs[1];
XYZ vectorToTest = (secondPoint - firstPoint).Normalize();
bool allAreCollinear = true;
for (int ii = 2; ii < numPoints; ii++)
{
XYZ vectorTmp = (pointXYZs[ii] - firstPoint).Normalize();
if (!vectorTmp.IsAlmostEqualTo(vectorToTest))
{
allAreCollinear = false;
break;
}
}
if (allAreCollinear)
{
Curve = Line.CreateBound(firstPoint, pointXYZs[numPoints - 1]);
}
}
}
private BRepBuilderSurfaceGeometry StartCollectingNURBSFace(IFCBSplineSurfaceWithKnots bSplineSurfaceWithKnots, Transform localTransform)
{
if (bSplineSurfaceWithKnots == null)
{
return(null);
}
IFCRationalBSplineSurfaceWithKnots rationalBSplineSurfaceWithKnots = (bSplineSurfaceWithKnots as IFCRationalBSplineSurfaceWithKnots);
IList <double> knotsU = IFCGeometryUtil.ConvertIFCKnotsToRevitKnots(bSplineSurfaceWithKnots.UMultiplicities, bSplineSurfaceWithKnots.UKnots);
if (knotsU == null || knotsU.Count == 0)
{
throw new InvalidOperationException("No knots in u-direction");
}
IList <double> knotsV = IFCGeometryUtil.ConvertIFCKnotsToRevitKnots(bSplineSurfaceWithKnots.VMultiplicities, bSplineSurfaceWithKnots.VKnots);
if (knotsV == null || knotsV.Count == 0)
{
throw new InvalidOperationException("No knots in v-direction");
}
IList <double> weights = (rationalBSplineSurfaceWithKnots != null) ? rationalBSplineSurfaceWithKnots.WeightsList : null;
IList <XYZ> controlPoints = new List <XYZ>();
foreach (XYZ point in bSplineSurfaceWithKnots.ControlPointsList)
{
controlPoints.Add(localTransform.OfPoint(point));
}
int uDegree = bSplineSurfaceWithKnots.UDegree;
int vDegree = bSplineSurfaceWithKnots.VDegree;
BRepBuilderSurfaceGeometry surfaceGeometry = null;
if (weights == null)
{
surfaceGeometry = BRepBuilderSurfaceGeometry.CreateNURBSSurface(uDegree, vDegree, knotsU, knotsV, controlPoints, false, null);
}
else
{
surfaceGeometry = BRepBuilderSurfaceGeometry.CreateNURBSSurface(uDegree, vDegree, knotsU, knotsV, controlPoints, weights, false, null);
}
return(surfaceGeometry);
}
override protected CurveLoop GenerateLoop()
{
IList <XYZ> polygon = Polygon;
if (polygon == null)
{
throw new InvalidOperationException("#" + Id + ": missing polygon, ignoring.");
}
int numVertices = Polygon.Count;
if (numVertices < 3)
{
throw new InvalidOperationException("#" + Id + ": Polygon attribute has only " + numVertices + " vertices, 3 expected.");
}
return(IFCGeometryUtil.CreatePolyCurveLoop(polygon, null, Id, true));
}
protected override void Process(IFCAnyHandle ifcCurve)
{
base.Process(ifcCurve);
IFCAnyHandle points = IFCAnyHandleUtil.GetInstanceAttribute(ifcCurve, "Points");
if (IFCAnyHandleUtil.IsNullOrHasNoValue(points))
{
Importer.TheLog.LogMissingRequiredAttributeError(ifcCurve, "Points", true);
return;
}
IFCCartesianPointList pointList = IFCCartesianPointList.ProcessIFCCartesianPointList(points);
IList <XYZ> pointXYZs = pointList.CoordList;
int numPoints = pointXYZs.Count;
SetCurveLoop(IFCGeometryUtil.CreatePolyCurveLoop(pointXYZs, null, Id, false), pointXYZs);
}
/// <summary>
/// Cut a IFCSolidInfo by the voids in this IFCProduct, if any.
/// </summary>
/// <param name="solidInfo">The solid information.</param>
/// <returns>False if the return solid is empty; true otherwise.</returns>
protected override bool CutSolidByVoids(IFCSolidInfo solidInfo)
{
int numVoids = Voids.Count;
if (numVoids == 0)
{
return(true);
}
// We only cut body representation items.
if (solidInfo.RepresentationType != IFCRepresentationIdentifier.Body)
{
return(true);
}
if (!(solidInfo.GeometryObject is Solid))
{
string typeName = (solidInfo.GeometryObject is Mesh) ? "mesh" : "instance";
Importer.TheLog.LogError(Id, "Can't cut " + typeName + " geometry, ignoring " + numVoids + " void(s).", false);
return(true);
}
for (int voidIdx = 0; voidIdx < numVoids; voidIdx++)
{
Solid voidObject = Voids[voidIdx].GeometryObject as Solid;
if (voidObject == null)
{
Importer.TheLog.LogError(Id, "Can't cut Solid geometry with a Mesh (# " + Voids[voidIdx].Id + "), ignoring.", false);
return(true);
}
solidInfo.GeometryObject = IFCGeometryUtil.ExecuteSafeBooleanOperation(solidInfo.Id, Voids[voidIdx].Id,
(solidInfo.GeometryObject as Solid), voidObject, BooleanOperationsType.Difference, null);
if (solidInfo.GeometryObject == null || (solidInfo.GeometryObject as Solid).Faces.IsEmpty)
{
return(false);
}
}
return(true);
}
override protected CurveLoop GenerateLoop()
{
IList <XYZ> polygon = Polygon;
if (polygon == null)
{
// This used to throw an error. However, we found files that threw this error
// thousands of times, causing incredibly slow links. Instead, null out the
// data and log an error.
Importer.TheLog.LogError(Id, "missing polygon, ignoring.", false);
}
int numVertices = Polygon.Count;
if (numVertices < 3)
{
throw new InvalidOperationException("#" + Id + ": Polygon attribute has only " + numVertices + " vertices, 3 expected.");
}
return(IFCGeometryUtil.CreatePolyCurveLoop(polygon, null, Id, true));
}
private void ProcessIFCPolyline(IFCAnyHandle ifcCurve)
{
IList <IFCAnyHandle> points = IFCAnyHandleUtil.GetAggregateInstanceAttribute <List <IFCAnyHandle> >(ifcCurve, "Points");
int numPoints = points.Count;
if (numPoints < 2)
{
string msg = "IfcPolyLine had " + numPoints + ", expected at least 2, ignoring";
IFCImportFile.TheLog.LogError(Id, msg, false);
return;
}
IList <XYZ> pointXYZs = new List <XYZ>();
foreach (IFCAnyHandle point in points)
{
XYZ pointXYZ = IFCPoint.ProcessScaledLengthIFCCartesianPoint(point);
pointXYZs.Add(pointXYZ);
}
CurveLoop = IFCGeometryUtil.CreatePolyCurveLoop(pointXYZs, points, Id, false);
}
protected override void Process(IFCAnyHandle ifcCurve)
{
base.Process(ifcCurve);
bool found = false;
double radius = IFCImportHandleUtil.GetRequiredScaledLengthAttribute(ifcCurve, "Radius", out found);
if (!found)
{
Importer.TheLog.LogError(ifcCurve.StepId, "Cannot find the radius of this circle", false);
return;
}
if (!IFCGeometryUtil.IsValidRadius(radius))
{
Importer.TheLog.LogError(ifcCurve.StepId, "Invalid radius for this circle: " + radius, false);
return;
}
try
{
SetCurve(Arc.Create(Position.Origin, radius, 0, 2.0 * Math.PI, Position.BasisX, Position.BasisY));
}
catch (Exception ex)
{
if (ex.Message.Contains("too small"))
{
string lengthAsString = IFCUnitUtil.FormatLengthAsString(radius);
Importer.TheLog.LogError(Id, "Found a circle with radius of " + lengthAsString + ", ignoring.", false);
}
else
{
Importer.TheLog.LogError(Id, ex.Message, false);
}
SetCurve(null);
}
}
/// <summary>
/// Return geometry for a particular representation item.
/// </summary>
/// <param name="shapeEditScope">The geometry creation scope.</param>
/// <param name="unscaledLcs">The unscaled local coordinate system for the geometry, if the scaled version isn't supported downstream.</param>
/// <param name="scaledLcs">The scaled (true) local coordinate system for the geometry.</param>
/// <param name="guid">The guid of an element for which represntation is being created.</param>
/// <returns>The created geometry.</returns>
protected override IList <GeometryObject> CreateGeometryInternal(
IFCImportShapeEditScope shapeEditScope, Transform unscaledLcs, Transform scaledLcs, string guid)
{
Transform unscaledObjectPosition = (unscaledLcs == null) ? Position : unscaledLcs.Multiply(Position);
Transform scaledObjectPosition = (scaledLcs == null) ? Position : scaledLcs.Multiply(Position);
CurveLoop baseProfileCurve = Directrix.GetCurveLoop();
if (baseProfileCurve == null)
{
return(null);
}
CurveLoop trimmedDirectrix = IFCGeometryUtil.TrimCurveLoop(Id, baseProfileCurve, StartParameter, EndParameter);
if (trimmedDirectrix == null)
{
return(null);
}
double startParam = 0.0; // If the directrix isn't bound, this arbitrary parameter will do.
Transform originTrf0 = null;
Curve firstCurve0 = trimmedDirectrix.First();
if (firstCurve0.IsBound)
{
startParam = firstCurve0.GetEndParameter(0);
}
originTrf0 = firstCurve0.ComputeDerivatives(startParam, false);
if (originTrf0 == null)
{
return(null);
}
// Note: the computation of the reference Surface Local Transform must be done before the directrix is transform to LCS (because the ref surface isn't)
// and therefore the origin is at the start of the curve should be the start of the directrix that lies on the surface.
// This is needed to transform the swept area that must be perpendicular to the start of the directrix curve
Transform referenceSurfaceLocalTransform = ReferenceSurface.GetTransformAtPoint(originTrf0.Origin);
CurveLoop trimmedDirectrixInLCS = IFCGeometryUtil.CreateTransformed(trimmedDirectrix, Id, unscaledObjectPosition, scaledObjectPosition);
// Create the sweep.
Transform originTrf = null;
Curve firstCurve = trimmedDirectrixInLCS.First();
//if (firstCurve.IsBound)
// startParam = firstCurve.GetEndParameter(0);
originTrf = firstCurve.ComputeDerivatives(startParam, false);
Transform unscaledReferenceSurfaceTransform = unscaledObjectPosition.Multiply(referenceSurfaceLocalTransform);
Transform scaledReferenceSurfaceTransform = scaledObjectPosition.Multiply(referenceSurfaceLocalTransform);
Transform profileCurveLoopsTransform = Transform.CreateTranslation(originTrf.Origin);
profileCurveLoopsTransform.BasisX = scaledReferenceSurfaceTransform.BasisZ;
profileCurveLoopsTransform.BasisZ = originTrf.BasisX.Normalize();
profileCurveLoopsTransform.BasisY = profileCurveLoopsTransform.BasisZ.CrossProduct(profileCurveLoopsTransform.BasisX);
ISet <IList <CurveLoop> > profileCurveLoops = GetTransformedCurveLoops(profileCurveLoopsTransform, profileCurveLoopsTransform);
if (profileCurveLoops == null || profileCurveLoops.Count == 0)
{
return(null);
}
SolidOptions solidOptions = new SolidOptions(GetMaterialElementId(shapeEditScope), shapeEditScope.GraphicsStyleId);
IList <GeometryObject> myObjs = new List <GeometryObject>();
foreach (IList <CurveLoop> loops in profileCurveLoops)
{
GeometryObject myObj = GeometryCreationUtilities.CreateSweptGeometry(trimmedDirectrixInLCS, 0, startParam, loops, solidOptions);
if (myObj != null)
{
myObjs.Add(myObj);
}
}
return(myObjs);
}
/// <summary>
/// Add curves to represent the plan view of the created object.
/// </summary>
/// <param name="curves">The list of curves, to be validated.</param>
/// <param name="id">The id of the object being created, for error logging.</param>
/// <returns>True if any curves were added to the plan view representation.</returns>
public bool AddPlanViewCurves(IList <Curve> curves, int id)
{
ViewShapeBuilder = null;
int numCurves = curves.Count;
if (numCurves > 0)
{
ViewShapeBuilder = new ViewShapeBuilder(DirectShapeTargetViewType.Plan);
IFCGeometryUtil.SplitUnboundCyclicCurves(curves);
// Ideally we'd form these curves into a CurveLoop and get the Plane of the CurveLoop. However, there is no requirement
// that the plan view curves form one contiguous loop.
foreach (Curve curve in curves)
{
if (ViewShapeBuilder.ValidateCurve(curve))
{
ViewShapeBuilder.AddCurve(curve);
}
else
{
// We will move the origin to Z=0 if necessary, since the VSB requires all curves to be in the Z=0 plane.
// This only works if the curves are in a plane parallel to the Z=0 plane.
// NOTE: We could instead project the curves to the Z=0 plane, which could have the effect of changing their geometry.
// Until we see such cases, we will take the easier route here.
try
{
// If the end points aren't equal in Z, then the curve isn't parallel to Z.
bool isBound = curve.IsBound;
XYZ startPoint = isBound ? curve.GetEndPoint(0) : curve.Evaluate(0, false);
XYZ endPoint = isBound ? curve.GetEndPoint(1) : startPoint;
if (!MathUtil.IsAlmostEqual(startPoint.Z, endPoint.Z))
{
throw new InvalidOperationException("Non-planar curve in footprint representation.");
}
// Lines won't have a non-zero BasisZ value, so don't bother computing.
if (!(curve is Line))
{
Transform coordinatePlane = curve.ComputeDerivatives(0, true);
if (coordinatePlane != null && coordinatePlane.BasisZ != null && !coordinatePlane.BasisZ.IsZeroLength())
{
XYZ normalizedZ = coordinatePlane.BasisZ.Normalize();
if (!MathUtil.IsAlmostEqual(Math.Abs(normalizedZ.Z), 1.0))
{
throw new InvalidOperationException("Non-planar curve in footprint representation.");
}
}
}
// We expect startPoint.Z to be non-zero, otherwise ValidateCurve would have accepted the curve in the first place.
Transform offsetTransform = Transform.CreateTranslation(-startPoint.Z * XYZ.BasisZ);
Curve projectedCurve = curve.CreateTransformed(offsetTransform);
// We may have missed a case above - for example, a curve whose end points have the same Z value, and whose normal at the
// start point is in +/-Z, but is regardless non-planar. ValidateCurve has a final chance to reject such curves here.
if (projectedCurve == null || !ViewShapeBuilder.ValidateCurve(projectedCurve))
{
throw new InvalidOperationException("Invalid curve in footprint representation.");
}
ViewShapeBuilder.AddCurve(projectedCurve);
continue;
}
catch
{
}
Importer.TheLog.LogError(id, "Invalid curve in FootPrint representation, ignoring.", false);
numCurves--;
}
}
if (numCurves == 0)
{
ViewShapeBuilder = null;
}
}
return(ViewShapeBuilder != null);
}
/// <summary>
/// Return geometry for a particular representation item.
/// </summary>
/// <param name="shapeEditScope">The geometry creation scope.</param>
/// <param name="lcs">Local coordinate system for the geometry, without scale.</param>
/// <param name="scaledLcs">Local coordinate system for the geometry, including scale, potentially non-uniform.</param>
/// <param name="guid">The guid of an element for which represntation is being created.</param>
/// <returns>Zero or more created geometries.</returns>
protected override IList <GeometryObject> CreateGeometryInternal(
IFCImportShapeEditScope shapeEditScope, Transform lcs, Transform scaledLcs, string guid)
{
Transform sweptDiskPosition = (lcs == null) ? Transform.Identity : lcs;
CurveLoop baseProfileCurve = Directrix.GetCurveLoop();
if (baseProfileCurve == null)
{
return(null);
}
CurveLoop trimmedDirectrix = IFCGeometryUtil.TrimCurveLoop(baseProfileCurve, StartParameter, EndParameter);
if (trimmedDirectrix == null)
{
return(null);
}
CurveLoop trimmedDirectrixInLCS = IFCGeometryUtil.CreateTransformed(trimmedDirectrix, sweptDiskPosition);
// Create the disk.
Transform originTrf = null;
double startParam = 0.0; // If the directrix isn't bound, this arbitrary parameter will do.
foreach (Curve curve in trimmedDirectrixInLCS)
{
if (curve.IsBound)
{
startParam = curve.GetEndParameter(0);
}
originTrf = curve.ComputeDerivatives(startParam, false);
break;
}
if (originTrf == null)
{
return(null);
}
// The X-dir of the transform of the start of the directrix will form the normal of the disk.
Plane diskPlane = new Plane(originTrf.BasisX, originTrf.Origin);
IList <CurveLoop> profileCurveLoops = new List <CurveLoop>();
CurveLoop diskOuterCurveLoop = new CurveLoop();
diskOuterCurveLoop.Append(Arc.Create(diskPlane, Radius, 0, Math.PI));
diskOuterCurveLoop.Append(Arc.Create(diskPlane, Radius, Math.PI, 2.0 * Math.PI));
profileCurveLoops.Add(diskOuterCurveLoop);
if (InnerRadius.HasValue)
{
CurveLoop diskInnerCurveLoop = new CurveLoop();
diskInnerCurveLoop.Append(Arc.Create(diskPlane, InnerRadius.Value, 0, Math.PI));
diskInnerCurveLoop.Append(Arc.Create(diskPlane, InnerRadius.Value, Math.PI, 2.0 * Math.PI));
profileCurveLoops.Add(diskInnerCurveLoop);
}
SolidOptions solidOptions = new SolidOptions(GetMaterialElementId(shapeEditScope), shapeEditScope.GraphicsStyleId);
Solid sweptDiskSolid = GeometryCreationUtilities.CreateSweptGeometry(trimmedDirectrixInLCS, 0, startParam, profileCurveLoops,
solidOptions);
IList <GeometryObject> myObjs = new List <GeometryObject>();
if (sweptDiskSolid != null)
{
myObjs.Add(sweptDiskSolid);
}
return(myObjs);
}
/// <summary>
/// Return geometry for a particular representation item.
/// </summary>
/// <param name="shapeEditScope">The geometry creation scope.</param>
/// <param name="lcs">Local coordinate system for the geometry.</param>
/// <param name="guid">The guid of an element for which represntation is being created.</param>
/// <returns>The created geometry.</returns>
protected override IList <GeometryObject> CreateGeometryInternal(
IFCImportShapeEditScope shapeEditScope, Transform lcs, Transform scaledLcs, string guid)
{
Transform objectPosition = (lcs == null) ? Position : lcs.Multiply(Position);
CurveLoop baseProfileCurve = Directrix.GetCurveLoop();
if (baseProfileCurve == null)
{
return(null);
}
CurveLoop trimmedDirectrix = IFCGeometryUtil.TrimCurveLoop(baseProfileCurve, StartParameter, EndParameter);
if (trimmedDirectrix == null)
{
return(null);
}
CurveLoop trimmedDirectrixInLCS = IFCGeometryUtil.CreateTransformed(trimmedDirectrix, objectPosition);
// Create the sweep.
double startParam = 0.0; // If the directrix isn't bound, this arbitrary parameter will do.
Transform originTrf = null;
Curve firstCurve = trimmedDirectrixInLCS.First();
if (firstCurve.IsBound)
{
startParam = firstCurve.GetEndParameter(0);
}
originTrf = firstCurve.ComputeDerivatives(startParam, false);
if (originTrf == null)
{
return(null);
}
Transform referenceSurfaceLocalTransform = ReferenceSurface.GetTransformAtPoint(originTrf.Origin);
Transform referenceSurfaceTransform = objectPosition.Multiply(referenceSurfaceLocalTransform);
Transform profileCurveLoopsTransform = Transform.CreateTranslation(originTrf.Origin);
profileCurveLoopsTransform.BasisX = referenceSurfaceTransform.BasisZ;
profileCurveLoopsTransform.BasisZ = originTrf.BasisX.Normalize();
profileCurveLoopsTransform.BasisY = profileCurveLoopsTransform.BasisZ.CrossProduct(profileCurveLoopsTransform.BasisX);
ISet <IList <CurveLoop> > profileCurveLoops = GetTransformedCurveLoops(profileCurveLoopsTransform);
if (profileCurveLoops == null || profileCurveLoops.Count == 0)
{
return(null);
}
SolidOptions solidOptions = new SolidOptions(GetMaterialElementId(shapeEditScope), shapeEditScope.GraphicsStyleId);
IList <GeometryObject> myObjs = new List <GeometryObject>();
foreach (IList <CurveLoop> loops in profileCurveLoops)
{
GeometryObject myObj = GeometryCreationUtilities.CreateSweptGeometry(trimmedDirectrixInLCS, 0, startParam, loops, solidOptions);
if (myObj != null)
{
myObjs.Add(myObj);
}
}
return(myObjs);
}
private void CreateTessellatedShapeInternal(IFCImportShapeEditScope shapeEditScope, Transform scaledLcs)
{
TessellatedShapeBuilderScope tsBuilderScope = shapeEditScope.BuilderScope as TessellatedShapeBuilderScope;
if (tsBuilderScope == null)
{
throw new InvalidOperationException("Expect a TessellatedShapeBuilderScope, but get a BrepBuilderScope instead");
}
IList <XYZ> loopVertices = Bound.LoopVertices;
int count = 0;
if (loopVertices == null || ((count = loopVertices.Count) == 0))
{
throw new InvalidOperationException("#" + Id + ": missing loop vertices, ignoring.");
}
if (count < 3)
{
throw new InvalidOperationException("#" + Id + ": too few loop vertices (" + count + "), ignoring.");
}
if (!Orientation)
{
loopVertices.Reverse();
}
// Apply the transform
IList <XYZ> transformedVertices = new List <XYZ>();
foreach (XYZ vertex in loopVertices)
{
transformedVertices.Add(scaledLcs.OfPoint(vertex));
}
// Check that the loop vertices don't contain points that are very close to one another;
// if so, throw the point away and hope that the TessellatedShapeBuilder can repair the result.
// Warn in this case. If the entire boundary is bad, report an error and don't add the loop vertices.
IList <XYZ> validVertices;
IFCGeometryUtil.CheckAnyDistanceVerticesWithinTolerance(Id, shapeEditScope, transformedVertices, out validVertices);
// We are going to catch any exceptions if the loop is invalid.
// We are going to hope that we can heal the parent object in the TessellatedShapeBuilder.
bool bPotentiallyAbortFace = false;
count = validVertices.Count;
if (validVertices.Count < 3)
{
Importer.TheLog.LogComment(Id, "Too few distinct loop vertices (" + count + "), ignoring.", false);
bPotentiallyAbortFace = true;
}
else
{
if (!tsBuilderScope.AddLoopVertices(Id, validVertices))
{
bPotentiallyAbortFace = true;
}
}
if (bPotentiallyAbortFace && IsOuter)
{
tsBuilderScope.AbortCurrentFace();
}
}
/// <summary>
/// Creates or populates Revit elements based on the information contained in this class.
/// </summary>
/// <param name="doc">The document.</param>
protected override void Create(Document doc)
{
Transform lcs = (ObjectLocation != null) ? ObjectLocation.TotalTransform : Transform.Identity;
if (ProductRepresentation != null)
{
if (ProductRepresentation.IsValid())
{
using (IFCImportShapeEditScope shapeEditScope = IFCImportShapeEditScope.Create(doc, this))
{
shapeEditScope.GraphicsStyleId = m_GraphicsStyleId;
shapeEditScope.CategoryId = CategoryId;
// The name can be added as well. but it is usually less useful than 'oid'
string myId = GlobalId; // + "(" + Name + ")";
ProductRepresentation.CreateProductRepresentation(shapeEditScope, lcs, lcs, myId);
int numSolids = Solids.Count;
int numVoids = Voids.Count;
if ((numSolids > 0) && (numVoids > 0))
{
// We may have some GeometryInstances. These need to be "exploded" to do the cutting.
for (int solidIdx = 0; solidIdx < numSolids; solidIdx++)
{
if (Solids[solidIdx].GeometryObject is GeometryInstance)
{
//// This code currently doesn't work, so commented out.
//GeometryInstance geomInst = Solids[solidIdx].GeometryObject as GeometryInstance;
//GeometryElement geomElem = geomInst.GetInstanceGeometry();
//foreach (GeometryObject geomObj in geomElem)
//{
//if (geomObj is Solid)
//Solids.Add(IFCSolidInfo.Create(Solids[solidIdx].Id, geomObj as Solid));
//else if (geomObj is Mesh)
//Solids.Add(IFCSolidInfo.Create(Solids[solidIdx].Id, geomObj as Mesh));
//else if (geomObj is GeometryInstance)
//IFCImportFile.TheLog.LogError(Solids[solidIdx].Id, "Can't cut nested mapped items, ignoring " + numVoids + " void(s).", false);
// Other items are irrelevant here.
//}
//Solids.RemoveAt(solidIdx);
//solidIdx--;
//numSolids--;
}
}
// This may be different than before, with the addition of solids from FamilyInstances.
numSolids = Solids.Count;
// Attempt to cut each solid with each void.
for (int solidIdx = 0; solidIdx < numSolids; solidIdx++)
{
if (!(Solids[solidIdx].GeometryObject is Solid))
{
// Assume that we only deal with solids, meshes and instances.
string typeName = (Solids[solidIdx].GeometryObject is Mesh) ? "mesh" : "instance";
IFCImportFile.TheLog.LogError(Id, "Can't cut " + typeName + " geometry, ignoring " + numVoids + " void(s).", false);
continue;
}
for (int voidIdx = 0; voidIdx < numVoids; voidIdx++)
{
if (!(Voids[voidIdx].GeometryObject is Solid))
{
IFCImportFile.TheLog.LogError(Id, "Can't cut Solid geometry with a Mesh (# " + Voids[voidIdx].Id + "), ignoring.", false);
continue;
}
Solids[solidIdx].GeometryObject =
IFCGeometryUtil.ExecuteSafeBooleanOperation(Solids[solidIdx].Id, Voids[voidIdx].Id,
Solids[solidIdx].GeometryObject as Solid, Voids[voidIdx].GeometryObject as Solid,
BooleanOperationsType.Difference);
if ((Solids[solidIdx].GeometryObject as Solid).Faces.IsEmpty)
{
Solids.RemoveAt(solidIdx);
solidIdx--;
numSolids--;
break;
}
}
}
}
bool addedCurves = shapeEditScope.AddPlanViewCurves(FootprintCurves, Id);
if ((numSolids > 0 || addedCurves))
{
if (GlobalId != null)
{
// If the GlobalId is null, this is a fake IfcProduct that we don't want to create into a DirectShape, or
// add to the caches in any way. We only wanted to gather its geometry.
DirectShape shape = Importer.TheCache.UseElementByGUID <DirectShape>(doc, GlobalId);
if (shape == null)
{
shape = IFCElementUtil.CreateElement(doc, CategoryId, Importer.ImportAppGUID(), GlobalId);
}
List <GeometryObject> directShapeGeometries = new List <GeometryObject>();
foreach (IFCSolidInfo geometryObject in Solids)
{
// We need to check if the solid created is good enough for DirectShape. If not, warn and use a fallback Mesh.
GeometryObject currObject = geometryObject.GeometryObject;
if (currObject is Solid)
{
Solid solid = currObject as Solid;
if (!shape.IsValidGeometry(solid))
{
IFCImportFile.TheLog.LogWarning(Id, "Couldn't create valid solid, reverting to mesh.", false);
directShapeGeometries.AddRange(IFCGeometryUtil.CreateMeshesFromSolid(solid));
currObject = null;
}
}
if (currObject != null)
{
directShapeGeometries.Add(currObject);
}
}
// We will use the first IfcTypeObject id, if it exists. In general, there should be 0 or 1.
ElementId typeId = ElementId.InvalidElementId;
foreach (IFCTypeObject typeObject in TypeObjects)
{
if (typeObject.IsValidForCreation && typeObject.CreatedElementId != ElementId.InvalidElementId)
{
typeId = typeObject.CreatedElementId;
break;
}
}
shape.SetShape(directShapeGeometries);
shapeEditScope.SetPlanViewRep(shape);
if (typeId != ElementId.InvalidElementId)
{
shape.SetTypeId(typeId);
}
PresentationLayerNames.UnionWith(shapeEditScope.PresentationLayerNames);
m_CreatedElementId = shape.Id;
}
}
}
}
else
{
IFCImportFile.TheLog.LogWarning(Id, "There is no valid geometry for this " + EntityType.ToString() + "; entity will not be built.", false);
}
}
base.Create(doc);
}
/// <summary>
/// Cut a IFCSolidInfo by the voids in this IFCProduct, if any.
/// </summary>
/// <param name="solidInfo">The solid information.</param>
/// <returns>False if the return solid is empty; true otherwise.</returns>
protected override bool CutSolidByVoids(IFCSolidInfo solidInfo)
{
// We only cut "Body" representation items.
if (solidInfo.RepresentationType != IFCRepresentationIdentifier.Body)
{
return(true);
}
IList <IFCVoidInfo> voidsToUse = null;
List <IFCVoidInfo> partVoids = null;
IList <IFCVoidInfo> parentVoids = (Decomposes as IFCProduct)?.Voids;
if (parentVoids != null)
{
partVoids = new List <IFCVoidInfo>();
partVoids.AddRange(Voids);
partVoids.AddRange(parentVoids);
voidsToUse = partVoids;
}
else
{
voidsToUse = Voids;
}
int numVoids = voidsToUse.Count;
if (numVoids == 0)
{
return(true);
}
if (!(solidInfo.GeometryObject is Solid))
{
string typeName = (solidInfo.GeometryObject is Mesh) ? "mesh" : "instance";
Importer.TheLog.LogError(Id, "Can't cut " + typeName + " geometry, ignoring " + numVoids + " void(s).", false);
return(true);
}
foreach (IFCVoidInfo voidInfo in voidsToUse)
{
Solid voidObject = voidInfo.GeometryObject as Solid;
if (voidObject == null)
{
Importer.TheLog.LogError(Id, "Can't cut Solid geometry with a Mesh (# " + voidInfo.Id + "), ignoring.", false);
continue;
}
var voidTransform = voidInfo.TotalTransform;
if (voidTransform != null && voidTransform.IsIdentity == false)
{
// Transform the void into the space of the solid.
var t = ObjectLocation.TotalTransform.Inverse.Multiply(voidTransform);
voidObject = SolidUtils.CreateTransformed(voidObject, t);
}
solidInfo.GeometryObject = IFCGeometryUtil.ExecuteSafeBooleanOperation(solidInfo.Id, voidInfo.Id,
(solidInfo.GeometryObject as Solid), voidObject, BooleanOperationsType.Difference, null);
if (solidInfo.GeometryObject == null || (solidInfo.GeometryObject as Solid).Faces.IsEmpty)
{
return(false);
}
}
return(true);
}
/// <summary>
/// Create geometry for an IfcHalfSpaceSolid.
/// </summary>
/// <param name="shapeEditScope">The shape edit scope.</param>
/// <param name="lcs">Local coordinate system for the geometry, without scale.</param>
/// <param name="scaledLcs">Local coordinate system for the geometry, including scale, potentially non-uniform.</param>
/// <param name="guid">The guid of an element for which represntation is being created.</param>
/// <returns>A list containing one geometry for the IfcHalfSpaceSolid.</returns>
protected virtual IList <GeometryObject> CreateGeometryInternal(
IFCImportShapeEditScope shapeEditScope, Transform unscaledLcs, Transform scaledLcs, string guid)
{
IFCPlane ifcPlane = BaseSurface as IFCPlane;
Plane plane = ifcPlane.Plane;
XYZ origin = plane.Origin;
XYZ xVec = plane.XVec;
XYZ yVec = plane.YVec;
// Set some huge boundaries for now.
const double largeCoordinateValue = 100000;
XYZ[] corners = new XYZ[4] {
unscaledLcs.OfPoint((xVec * -largeCoordinateValue) + (yVec * -largeCoordinateValue) + origin),
unscaledLcs.OfPoint((xVec * largeCoordinateValue) + (yVec * -largeCoordinateValue) + origin),
unscaledLcs.OfPoint((xVec * largeCoordinateValue) + (yVec * largeCoordinateValue) + origin),
unscaledLcs.OfPoint((xVec * -largeCoordinateValue) + (yVec * largeCoordinateValue) + origin)
};
IList <CurveLoop> loops = new List <CurveLoop>();
CurveLoop loop = new CurveLoop();
for (int ii = 0; ii < 4; ii++)
{
if (AgreementFlag)
{
loop.Append(Line.CreateBound(corners[(5 - ii) % 4], corners[(4 - ii) % 4]));
}
else
{
loop.Append(Line.CreateBound(corners[ii], corners[(ii + 1) % 4]));
}
}
loops.Add(loop);
XYZ normal = unscaledLcs.OfVector(AgreementFlag ? -plane.Normal : plane.Normal);
SolidOptions solidOptions = new SolidOptions(GetMaterialElementId(shapeEditScope), shapeEditScope.GraphicsStyleId);
Solid baseSolid = GeometryCreationUtilities.CreateExtrusionGeometry(loops, normal, largeCoordinateValue, solidOptions);
if (BaseBoundingCurve != null)
{
CurveLoop polygonalBoundary = BaseBoundingCurve.CurveLoop;
Transform unscaledTotalTransform = unscaledLcs.Multiply(BaseBoundingCurveTransform);
Transform scaledTotalTransform = scaledLcs.Multiply(BaseBoundingCurveTransform);
// Make sure this bounding polygon extends below base of half-space soild.
Transform moveBaseTransform = Transform.Identity;
moveBaseTransform.Origin = new XYZ(0, 0, -largeCoordinateValue);
unscaledTotalTransform = unscaledTotalTransform.Multiply(moveBaseTransform);
scaledTotalTransform = scaledTotalTransform.Multiply(moveBaseTransform);
CurveLoop transformedPolygonalBoundary = IFCGeometryUtil.CreateTransformed(polygonalBoundary, Id, unscaledTotalTransform, scaledTotalTransform);
IList <CurveLoop> boundingLoops = new List <CurveLoop>();
boundingLoops.Add(transformedPolygonalBoundary);
Solid boundingSolid = GeometryCreationUtilities.CreateExtrusionGeometry(boundingLoops, unscaledTotalTransform.BasisZ, 2.0 * largeCoordinateValue,
solidOptions);
baseSolid = IFCGeometryUtil.ExecuteSafeBooleanOperation(Id, BaseBoundingCurve.Id, baseSolid, boundingSolid, BooleanOperationsType.Intersect, null);
}
IList <GeometryObject> returnList = new List <GeometryObject>();
returnList.Add(baseSolid);
return(returnList);
}
/// <summary>
/// Creates or populates Revit elements based on the information contained in this class.
/// </summary>
/// <param name="doc">The document.</param>
protected override void Create(Document doc)
{
bool preventInstances = false;
IFCElement element = this as IFCElement;
if (element != null)
{
preventInstances = this is IFCOpeningElement;
foreach (IFCFeatureElement opening in element.Openings)
{
try
{
preventInstances = true;
// Create the actual Revit element based on the IFCFeatureElement here.
ElementId openingId = CreateElement(doc, opening);
// This gets around the issue that the Boolean operation between the void(s) in the IFCFeatureElement and
// the solid(s) in the IFCElement may use the Graphics Style of the voids in the resulting Solid(s), meaning
// that some faces may disappear when we turn off the visibility of IfcOpeningElements.
IList <IFCSolidInfo> voids = IFCElement.CloneElementGeometry(doc, opening, this, true);
if (voids != null)
{
foreach (IFCSolidInfo voidGeom in voids)
{
IFCVoidInfo voidInfo = new IFCVoidInfo(voidGeom);
if (!Importer.TheProcessor.ApplyTransforms)
{
// If we aren't applying transforms, then the Voids and Solids will be
// in different coordinate spaces, so we need the transform of the
// void, so we can transform it into the Solid coordinate space
voidInfo.TotalTransform = opening?.ObjectLocation?.TotalTransform;
}
Voids.Add(voidInfo);
}
}
}
catch (Exception ex)
{
Importer.TheLog.LogError(opening.Id, ex.Message, false);
}
}
}
if (HasValidTopLevelGeometry())
{
using (IFCImportShapeEditScope shapeEditScope = IFCImportShapeEditScope.Create(doc, this))
{
shapeEditScope.GraphicsStyleId = GraphicsStyleId;
shapeEditScope.CategoryId = CategoryId;
shapeEditScope.PreventInstances = preventInstances;
// The name can be added as well. but it is usually less useful than 'oid'
string myId = GlobalId; // + "(" + Name + ")";
Transform lcs = IFCImportFile.TheFile.IFCProject.WorldCoordinateSystem;
if (lcs == null)
{
lcs = (ObjectLocation != null) ? ObjectLocation.TotalTransform : Transform.Identity;
}
else if (ObjectLocation != null)
{
lcs = lcs.Multiply(ObjectLocation.TotalTransform);
}
// If we are not applying transforms to the geometry, then pass in the identity matrix.
// Lower down this method we then pass lcs to the consumer element, so that it can apply
// the transform as required.
Transform transformToUse = Importer.TheProcessor.ApplyTransforms ? lcs : Transform.Identity;
ProductRepresentation.CreateProductRepresentation(shapeEditScope, transformToUse, transformToUse, myId);
int numSolids = Solids.Count;
// Attempt to cut each solid with each void.
for (int solidIdx = 0; solidIdx < numSolids; solidIdx++)
{
if (!CutSolidByVoids(Solids[solidIdx]))
{
Solids.RemoveAt(solidIdx);
solidIdx--;
numSolids--;
}
}
bool addedCurves = shapeEditScope.AddPlanViewCurves(FootprintCurves, Id);
if ((numSolids > 0 || addedCurves))
{
if (GlobalId != null)
{
// If the GlobalId is null, this is a fake IfcProduct that we don't want to create into a DirectShape, or
// add to the caches in any way. We only wanted to gather its geometry.
DirectShape shape = Importer.TheCache.UseElementByGUID <DirectShape>(doc, GlobalId);
if (shape == null)
{
shape = IFCElementUtil.CreateElement(doc, CategoryId, GlobalId, null, Id, EntityType);
}
List <GeometryObject> directShapeGeometries = new List <GeometryObject>();
foreach (IFCSolidInfo geometryObject in Solids)
{
// We need to check if the solid created is good enough for DirectShape. If not, warn and use a fallback Mesh.
GeometryObject currObject = geometryObject.GeometryObject;
if (currObject is Solid)
{
Solid solid = currObject as Solid;
if (!shape.IsValidGeometry(solid))
{
Importer.TheLog.LogWarning(Id, "Couldn't create valid solid, reverting to mesh.", false);
directShapeGeometries.AddRange(IFCGeometryUtil.CreateMeshesFromSolid(solid));
currObject = null;
}
}
if (currObject != null)
{
directShapeGeometries.Add(currObject);
}
}
// We will use the first IfcTypeObject id, if it exists. In general, there should be 0 or 1.
IFCTypeObject typeObjectToUse = null;
foreach (IFCTypeObject typeObject in TypeObjects)
{
if (typeObject.IsValidForCreation && typeObject.CreatedElementId != ElementId.InvalidElementId)
{
typeObjectToUse = typeObject;
break;
}
}
if (!Importer.TheProcessor.PostProcessProduct(Id, typeObjectToUse?.Id, lcs,
directShapeGeometries))
{
if (shape != null)
{
shape.SetShape(directShapeGeometries);
shapeEditScope.SetPlanViewRep(shape);
if (typeObjectToUse != null && typeObjectToUse.CreatedElementId != ElementId.InvalidElementId)
{
shape.SetTypeId(typeObjectToUse.CreatedElementId);
}
}
}
PresentationLayerNames.UnionWith(shapeEditScope.PresentationLayerNames);
CreatedElementId = shape.Id;
CreatedGeometry = directShapeGeometries;
}
}
}
}
else
{
if (this is IFCElement || this is IFCGrid)
{
IList <IFCEntity> visitedEntities = new List <IFCEntity>();
visitedEntities.Add(this);
if (!HasValidSubElementGeometry(visitedEntities))
{
// We will not warn if this is an IfcSpatialStructureElement; those aren't expected to have their own geometry.
Importer.TheLog.LogWarning(Id, "There is no valid geometry for this " + EntityType.ToString() + "; entity will not be built.", false);
}
}
}
base.Create(doc);
}
/// <summary>
/// Return geometry for a particular representation item.
/// </summary>
/// <param name="shapeEditScope">The geometry creation scope.</param>
/// <param name="lcs">Local coordinate system for the geometry, without scale.</param>
/// <param name="scaledLcs">Local coordinate system for the geometry, including scale, potentially non-uniform.</param>
/// <param name="guid">The guid of an element for which represntation is being created.</param>
/// <returns>The created geometry.</returns>
public IList <GeometryObject> CreateGeometry(
IFCImportShapeEditScope shapeEditScope, Transform lcs, Transform scaledLcs, string guid)
{
IList <GeometryObject> firstSolids = FirstOperand.CreateGeometry(shapeEditScope, lcs, scaledLcs, guid);
if (firstSolids != null)
{
foreach (GeometryObject potentialSolid in firstSolids)
{
if (!(potentialSolid is Solid))
{
IFCImportFile.TheLog.LogError((FirstOperand as IFCRepresentationItem).Id, "Can't perform Boolean operation on a Mesh.", false);
return(firstSolids);
}
}
}
IList <GeometryObject> secondSolids = null;
if (SecondOperand != null)
{
try
{
using (IFCImportShapeEditScope.IFCTargetSetter setter =
new IFCImportShapeEditScope.IFCTargetSetter(shapeEditScope, TessellatedShapeBuilderTarget.Solid, TessellatedShapeBuilderFallback.Abort))
{
secondSolids = SecondOperand.CreateGeometry(shapeEditScope, lcs, scaledLcs, guid);
}
}
catch (Exception ex)
{
// We will allow something to be imported, in the case where the second operand is invalid.
// If the first (base) operand is invalid, we will still fail the import of this solid.
if (SecondOperand is IFCRepresentationItem)
{
IFCImportFile.TheLog.LogError((SecondOperand as IFCRepresentationItem).Id, ex.Message, false);
}
else
{
throw ex;
}
secondSolids = null;
}
}
IList <GeometryObject> resultSolids = null;
if (firstSolids == null)
{
resultSolids = secondSolids;
}
else if (secondSolids == null)
{
resultSolids = firstSolids;
}
else
{
BooleanOperationsType booleanOperationsType = BooleanOperationsType.Difference;
switch (BooleanOperator)
{
case IFCBooleanOperator.Difference:
booleanOperationsType = BooleanOperationsType.Difference;
break;
case IFCBooleanOperator.Intersection:
booleanOperationsType = BooleanOperationsType.Intersect;
break;
case IFCBooleanOperator.Union:
booleanOperationsType = BooleanOperationsType.Union;
break;
default:
IFCImportFile.TheLog.LogError(Id, "Invalid BooleanOperationsType.", true);
break;
}
resultSolids = new List <GeometryObject>();
foreach (GeometryObject firstSolid in firstSolids)
{
Solid resultSolid = (firstSolid as Solid);
int secondId = (SecondOperand == null) ? -1 : (SecondOperand as IFCRepresentationItem).Id;
foreach (GeometryObject secondSolid in secondSolids)
{
resultSolid = IFCGeometryUtil.ExecuteSafeBooleanOperation(Id, secondId, resultSolid, secondSolid as Solid, booleanOperationsType);
if (resultSolid == null)
{
break;
}
}
if (resultSolid != null)
{
resultSolids.Add(resultSolid);
}
}
}
return(resultSolids);
}
/// <summary>
/// Return geometry for a particular representation item.
/// </summary>
/// <param name="shapeEditScope">The geometry creation scope.</param>
/// <param name="lcs">Local coordinate system for the geometry, without scale.</param>
/// <param name="scaledLcs">Local coordinate system for the geometry, including scale, potentially non-uniform.</param>
/// <param name="guid">The guid of an element for which represntation is being created.</param>
/// <returns>The created geometry.</returns>
public IList <GeometryObject> CreateGeometry(
IFCImportShapeEditScope shapeEditScope, Transform lcs, Transform scaledLcs, string guid)
{
IList <GeometryObject> firstSolids = FirstOperand.CreateGeometry(shapeEditScope, lcs, scaledLcs, guid);
if (firstSolids != null)
{
foreach (GeometryObject potentialSolid in firstSolids)
{
if (!(potentialSolid is Solid))
{
Importer.TheLog.LogError((FirstOperand as IFCRepresentationItem).Id, "Can't perform Boolean operation on a Mesh.", false);
return(firstSolids);
}
}
}
IList <GeometryObject> secondSolids = null;
if (SecondOperand != null)
{
try
{
using (IFCImportShapeEditScope.BuildPreferenceSetter setter =
new IFCImportShapeEditScope.BuildPreferenceSetter(shapeEditScope, IFCImportShapeEditScope.BuildPreferenceType.ForceSolid))
{
// Before we process the second operand, we are going to see if there is a uniform material set for the first operand
// (corresponding to the solid in the Boolean operation). We will try to suggest the same material for the voids to avoid arbitrary
// setting of material information for the cut faces.
IFCStyledItem firstOperandStyledItem = GetStyledItemFromOperand(FirstOperand as IFCRepresentationItem);
using (IFCImportShapeEditScope.IFCMaterialStack stack =
new IFCImportShapeEditScope.IFCMaterialStack(shapeEditScope, firstOperandStyledItem, null))
{
secondSolids = SecondOperand.CreateGeometry(shapeEditScope, lcs, scaledLcs, guid);
}
}
}
catch (Exception ex)
{
// We will allow something to be imported, in the case where the second operand is invalid.
// If the first (base) operand is invalid, we will still fail the import of this solid.
if (SecondOperand is IFCRepresentationItem)
{
Importer.TheLog.LogError((SecondOperand as IFCRepresentationItem).Id, ex.Message, false);
}
else
{
throw ex;
}
secondSolids = null;
}
}
IList <GeometryObject> resultSolids = null;
if (firstSolids == null)
{
resultSolids = secondSolids;
}
else if (secondSolids == null || BooleanOperator == null)
{
if (BooleanOperator == null)
{
Importer.TheLog.LogError(Id, "Invalid BooleanOperationsType.", false);
}
resultSolids = firstSolids;
}
else
{
BooleanOperationsType booleanOperationsType = BooleanOperationsType.Difference;
switch (BooleanOperator)
{
case IFCBooleanOperator.Difference:
booleanOperationsType = BooleanOperationsType.Difference;
break;
case IFCBooleanOperator.Intersection:
booleanOperationsType = BooleanOperationsType.Intersect;
break;
case IFCBooleanOperator.Union:
booleanOperationsType = BooleanOperationsType.Union;
break;
default:
Importer.TheLog.LogError(Id, "Invalid BooleanOperationsType.", true);
break;
}
resultSolids = new List <GeometryObject>();
foreach (GeometryObject firstSolid in firstSolids)
{
Solid resultSolid = (firstSolid as Solid);
int secondId = (SecondOperand == null) ? -1 : (SecondOperand as IFCRepresentationItem).Id;
XYZ suggestedShiftDirection = (SecondOperand == null) ? null : SecondOperand.GetSuggestedShiftDirection(lcs);
foreach (GeometryObject secondSolid in secondSolids)
{
resultSolid = IFCGeometryUtil.ExecuteSafeBooleanOperation(Id, secondId, resultSolid, secondSolid as Solid, booleanOperationsType, suggestedShiftDirection);
if (resultSolid == null)
{
break;
}
}
if (resultSolid != null)
{
resultSolids.Add(resultSolid);
}
}
}
return(resultSolids);
}
protected override void CreateShapeInternal(IFCImportShapeEditScope shapeEditScope, Transform lcs, Transform scaledLcs, string guid)
{
using (BuilderScope bs = shapeEditScope.InitializeBuilder(IFCShapeBuilderType.TessellatedShapeBuilder))
{
base.CreateShapeInternal(shapeEditScope, lcs, scaledLcs, guid);
TessellatedShapeBuilderScope tsBuilderScope = bs as TessellatedShapeBuilderScope;
tsBuilderScope.StartCollectingFaceSet();
// Create the face set from IFCIndexedPolygonalFace
foreach (IFCIndexedPolygonalFace face in Faces)
{
// TODO: Consider adding ability to triangulate here.
tsBuilderScope.StartCollectingFace(GetMaterialElementId(shapeEditScope), false);
IList <XYZ> loopVertices = new List <XYZ>();
foreach (int vertInd in face.CoordIndex)
{
int actualVIdx = vertInd - 1; // IFC starts the list position at 1
if (PnIndex != null)
{
actualVIdx = PnIndex[actualVIdx] - 1;
}
XYZ vertex = Coordinates.CoordList[actualVIdx];
loopVertices.Add(scaledLcs.OfPoint(vertex));
}
List <XYZ> validVertices;
IFCGeometryUtil.CheckAnyDistanceVerticesWithinTolerance(Id, shapeEditScope, loopVertices, out validVertices);
bool bPotentiallyAbortFace = false;
if (!tsBuilderScope.AddLoopVertices(Id, validVertices))
{
bPotentiallyAbortFace = true;
}
// Handle holes
if (face.InnerCoordIndices != null)
{
foreach (IList <int> innerLoop in face.InnerCoordIndices)
{
IList <XYZ> innerLoopVertices = new List <XYZ>();
foreach (int innerVerIdx in innerLoop)
{
int actualVIdx = innerVerIdx - 1;
if (PnIndex != null)
{
actualVIdx = PnIndex[actualVIdx] - 1;
}
XYZ vertex = Coordinates.CoordList[actualVIdx];
// add vertex to the loop
innerLoopVertices.Add(scaledLcs.OfPoint(vertex));
}
List <XYZ> validInnerV;
IFCGeometryUtil.CheckAnyDistanceVerticesWithinTolerance(Id, shapeEditScope, innerLoopVertices, out validInnerV);
if (!tsBuilderScope.AddLoopVertices(Id, validInnerV))
{
bPotentiallyAbortFace = true;
}
}
}
tsBuilderScope.StopCollectingFace(!bPotentiallyAbortFace, false);
}
IList <GeometryObject> createdGeometries = tsBuilderScope.CreateGeometry(guid);
if (createdGeometries != null)
{
foreach (GeometryObject createdGeometry in createdGeometries)
{
shapeEditScope.AddGeometry(IFCSolidInfo.Create(Id, createdGeometry));
}
}
}
}
/// <summary>
/// Perform end of import/link cleanup.
/// </summary>
/// <param name="doc">The document.</param>
/// <param name="fileName">The full path of the original IFC file.</param>
public void EndImport(Document doc, string fileName)
{
// Remove an unupdated Elements as a result of a reload operation.
try
{
// We are working around a limitation in deleting unused DirectShapeTypes.
IList <ElementId> otherElementsToDelete = new List <ElementId>();
IList <ElementId> typesToDelete = new List <ElementId>();
foreach (ElementId elementId in Importer.TheCache.GUIDToElementMap.Values)
{
if (DontDeleteSpecialElement(elementId))
{
continue;
}
Element element = doc.GetElement(elementId);
if (element == null)
{
continue;
}
if (element is DirectShapeType)
{
typesToDelete.Add(elementId);
}
else
{
otherElementsToDelete.Add(elementId);
}
}
foreach (ElementId elementId in Importer.TheCache.GridNameToElementMap.Values)
{
Element element = doc.GetElement(elementId);
if (element == null)
{
continue;
}
otherElementsToDelete.Add(elementId);
}
// Don't expect this to fail.
try
{
if (otherElementsToDelete.Count > 0)
{
doc.Delete(otherElementsToDelete);
}
}
catch (Exception ex)
{
Importer.TheLog.LogError(-1, ex.Message, false);
}
// Delete the temporary element we used for validation purposes.
IFCGeometryUtil.DeleteSolidValidator();
// This might fail.
if (typesToDelete.Count > 0)
{
doc.Delete(typesToDelete);
}
UpdateDocumentFileMetrics(doc, fileName);
}
catch // (Exception ex)
{
// Catch, but don't report, since this is an internal limitation in the API.
//TheLog.LogError(-1, ex.Message, false);
}
if (m_Transaction != null)
{
m_Transaction.Commit();
}
}
protected override void CreateShapeInternal(IFCImportShapeEditScope shapeEditScope, Transform lcs, Transform scaledLcs, string guid)
{
using (BuilderScope bs = shapeEditScope.InitializeBuilder(IFCShapeBuilderType.TessellatedShapeBuilder))
{
base.CreateShapeInternal(shapeEditScope, lcs, scaledLcs, guid);
TessellatedShapeBuilderScope tsBuilderScope = bs as TessellatedShapeBuilderScope;
tsBuilderScope.StartCollectingFaceSet();
// Create triangle face set from CoordIndex. We do not support the Normals yet at this point
foreach (List <int> triIndex in CoordIndex)
{
// This is a defensive check in an unlikely situation that the index is larger than the data
if (triIndex[0] > Coordinates.CoordList.Count || triIndex[1] > Coordinates.CoordList.Count || triIndex[2] > Coordinates.CoordList.Count)
{
continue;
}
tsBuilderScope.StartCollectingFace(GetMaterialElementId(shapeEditScope));
IList <XYZ> loopVertices = new List <XYZ>();
for (int ii = 0; ii < 3; ++ii)
{
int actualVIdx = triIndex[ii] - 1;
if (PnIndex != null)
{
actualVIdx = PnIndex[actualVIdx] - 1;
}
IList <double> v = Coordinates.CoordList[actualVIdx];
loopVertices.Add(new XYZ(v[0], v[1], v[2]));
}
IList <XYZ> transformedVertices = new List <XYZ>();
foreach (XYZ vertex in loopVertices)
{
// Need to apply the project unit scaling here
XYZ scaledVertex = applyProjectUnitScaleVertex(vertex);
transformedVertices.Add(scaledLcs.OfPoint(scaledVertex));
}
// Check triangle that is too narrow (2 vertices are within the tolerance
IList <XYZ> validVertices;
IFCGeometryUtil.CheckAnyDistanceVerticesWithinTolerance(Id, shapeEditScope, transformedVertices, out validVertices);
// We are going to catch any exceptions if the loop is invalid.
// We are going to hope that we can heal the parent object in the TessellatedShapeBuilder.
bool bPotentiallyAbortFace = false;
int count = validVertices.Count;
if (validVertices.Count < 3)
{
Importer.TheLog.LogComment(Id, "Too few distinct loop vertices (" + count + "), ignoring.", false);
bPotentiallyAbortFace = true;
}
else
{
if (!tsBuilderScope.AddLoopVertices(Id, validVertices))
{
bPotentiallyAbortFace = true;
}
}
if (bPotentiallyAbortFace)
{
tsBuilderScope.AbortCurrentFace();
}
else
{
tsBuilderScope.StopCollectingFace();
}
}
IList <GeometryObject> createdGeometries = tsBuilderScope.CreateGeometry(guid);
if (createdGeometries != null)
{
foreach (GeometryObject createdGeometry in createdGeometries)
{
shapeEditScope.AddGeometry(IFCSolidInfo.Create(Id, createdGeometry));
}
}
}
}
