public TessellatedShapeBuilderScope(IFCImportShapeEditScope container)
: base(container)
{
IFCImportShapeEditScope.BuildPreferenceType BuildPreference = container.BuildPreference;
if (BuildPreference == IFCImportShapeEditScope.BuildPreferenceType.ForceSolid)
{
SetTargetAndFallbackGeometry(TessellatedShapeBuilderTarget.Solid, TessellatedShapeBuilderFallback.Abort);
}
else if (BuildPreference == IFCImportShapeEditScope.BuildPreferenceType.AnyMesh)
{
SetTargetAndFallbackGeometry(TessellatedShapeBuilderTarget.Mesh, TessellatedShapeBuilderFallback.Salvage);
}
else if (BuildPreference == IFCImportShapeEditScope.BuildPreferenceType.AnyGeometry)
{
SetTargetAndFallbackGeometry(TessellatedShapeBuilderTarget.AnyGeometry, TessellatedShapeBuilderFallback.Mesh);
}
}
/// <summary>
/// Return geometry for a particular representation item.
/// </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>The created geometry.</returns>
/// <remarks>As this doesn't inherit from IfcSolidModel, this is a non-virtual CreateSolid function.</remarks>
protected IList <GeometryObject> CreateGeometry(
IFCImportShapeEditScope shapeEditScope, Transform lcs, Transform scaledLcs, string guid)
{
if (Shells.Count == 0)
{
return(null);
}
IList <GeometryObject> geomObjs = null;
int numExpectedFaces = 0;
foreach (IFCConnectedFaceSet faceSet in Shells)
{
numExpectedFaces += faceSet.Faces.Count;
}
// We are going to start by trying to create a Solid, even if we are passed a shell-based model, since we can frequently
// do so. However, if we have even one missing face, we'll loosen the requirements and revert to mesh only.
for (int pass = 0; pass < 2; pass++)
{
IFCImportShapeEditScope.BuildPreferenceType target =
(pass == 0) ? IFCImportShapeEditScope.BuildPreferenceType.AnyGeometry : IFCImportShapeEditScope.BuildPreferenceType.AnyMesh;
using (IFCImportShapeEditScope.BuildPreferenceSetter setter =
new IFCImportShapeEditScope.BuildPreferenceSetter(shapeEditScope, target))
{
using (BuilderScope bs = shapeEditScope.InitializeBuilder(IFCShapeBuilderType.TessellatedShapeBuilder))
{
TessellatedShapeBuilderScope tsBuilderScope = shapeEditScope.BuilderScope as TessellatedShapeBuilderScope;
tsBuilderScope.StartCollectingFaceSet();
foreach (IFCConnectedFaceSet faceSet in Shells)
{
faceSet.CreateShape(shapeEditScope, lcs, scaledLcs, guid);
}
// If we are on our first pass, try again. If we are on our second pass, warn and create the best geometry we can.
if (tsBuilderScope.CreatedFacesCount != numExpectedFaces)
{
if (pass == 0)
{
continue;
}
Importer.TheLog.LogWarning
(Id, "Processing " + tsBuilderScope.CreatedFacesCount + " valid faces out of " + numExpectedFaces + " total.", false);
}
geomObjs = tsBuilderScope.CreateGeometry(guid);
WarnOnTooFewCreatedFaces(geomObjs, numExpectedFaces);
break;
}
}
}
if (geomObjs == null || geomObjs.Count == 0)
{
if (numExpectedFaces != 0)
{
Importer.TheLog.LogError
(Id, "No valid geometry found. This may be due to slivery triangles or other similar geometric issues.", false);
return(null);
}
}
return(geomObjs);
}
