/// <summary>
/// Group the extra faces in the extrusion by element id, representing clippings, recesses, and openings.
/// </summary>
/// <param name="elem">The element generating the base extrusion.</param>
/// <param name="analyzer">The extrusion analyzer.</param>
/// <returns>A list of connected faces for each element id that cuts the extrusion</returns>
public static IDictionary<ElementId, ICollection<ICollection<Face>>> GetCuttingElementFaces(Element elem, ExtrusionAnalyzer analyzer)
{
IDictionary<ElementId, HashSet<Face>> cuttingElementFaces = new Dictionary<ElementId, HashSet<Face>>();
IDictionary<Face, ExtrusionAnalyzerFaceAlignment> allFaces = analyzer.CalculateFaceAlignment();
foreach (KeyValuePair<Face, ExtrusionAnalyzerFaceAlignment> currFace in allFaces)
{
if (currFace.Value == ExtrusionAnalyzerFaceAlignment.FullyAligned)
continue;
EdgeArrayArray faceEdges = currFace.Key.EdgeLoops;
int numBoundaries = faceEdges.Size;
if (numBoundaries == 0)
continue;
if (numBoundaries > 1)
throw new Exception("Can't handle faces with interior boundaries.");
ICollection<ElementId> generatingElementIds = elem.GetGeneratingElementIds(currFace.Key);
foreach (ElementId generatingElementId in generatingElementIds)
{
HashSet<Face> elementFaces;
if (cuttingElementFaces.ContainsKey(generatingElementId))
{
elementFaces = cuttingElementFaces[generatingElementId];
}
else
{
elementFaces = new HashSet<Face>();
cuttingElementFaces[generatingElementId] = elementFaces;
}
elementFaces.Add(currFace.Key);
}
}
IDictionary<ElementId, ICollection<ICollection<Face>>> cuttingElementFaceCollections =
new Dictionary<ElementId, ICollection<ICollection<Face>>>();
foreach (KeyValuePair<ElementId, HashSet<Face>> cuttingElementFaceCollection in cuttingElementFaces)
{
ICollection<ICollection<Face>> faceCollections = new List<ICollection<Face>>();
// Split into separate collections based on connectivity.
while (cuttingElementFaceCollection.Value.Count > 0)
{
IList<Face> currCollection = new List<Face>();
IEnumerator<Face> cuttingElementFaceCollectionEnumerator = cuttingElementFaceCollection.Value.GetEnumerator();
cuttingElementFaceCollectionEnumerator.MoveNext();
Face currFace = cuttingElementFaceCollectionEnumerator.Current;
currCollection.Add(currFace);
cuttingElementFaceCollection.Value.Remove(currFace);
IList<Face> facesToProcess = new List<Face>();
facesToProcess.Add(currFace);
if (cuttingElementFaceCollection.Value.Count > 0)
{
while (facesToProcess.Count > 0)
{
currFace = facesToProcess[0];
EdgeArray faceOuterBoundary = currFace.EdgeLoops.get_Item(0);
foreach (Edge edge in faceOuterBoundary)
{
Face adjoiningFace = edge.get_Face(1);
if (adjoiningFace.Equals(currFace))
adjoiningFace = edge.get_Face(0);
if (cuttingElementFaceCollection.Value.Contains(adjoiningFace))
{
currCollection.Add(adjoiningFace);
cuttingElementFaceCollection.Value.Remove(adjoiningFace);
facesToProcess.Add(adjoiningFace);
}
}
facesToProcess.Remove(facesToProcess[0]);
}
}
faceCollections.Add(currCollection);
}
cuttingElementFaceCollections[cuttingElementFaceCollection.Key] = faceCollections;
}
return cuttingElementFaceCollections;
}
/// <summary>
/// Group the extra faces in the extrusion by element id, representing clippings, recesses, and openings.
/// </summary>
/// <param name="elem">The element generating the base extrusion.</param>
/// <param name="analyzer">The extrusion analyzer.</param>
/// <returns>A list of connected faces for each element id that cuts the extrusion</returns>
public static IDictionary <ElementId, ICollection <ICollection <Face> > > GetCuttingElementFaces(Element elem, ExtrusionAnalyzer analyzer)
{
IDictionary <ElementId, HashSet <Face> > cuttingElementFaces = new Dictionary <ElementId, HashSet <Face> >();
IDictionary <Face, ExtrusionAnalyzerFaceAlignment> allFaces = analyzer.CalculateFaceAlignment();
foreach (KeyValuePair <Face, ExtrusionAnalyzerFaceAlignment> currFace in allFaces)
{
if (currFace.Value == ExtrusionAnalyzerFaceAlignment.FullyAligned)
{
continue;
}
EdgeArrayArray faceEdges = currFace.Key.EdgeLoops;
int numBoundaries = faceEdges.Size;
if (numBoundaries == 0)
{
continue;
}
if (numBoundaries > 1)
{
throw new Exception("Can't handle faces with interior boundaries.");
}
ICollection <ElementId> generatingElementIds = elem.GetGeneratingElementIds(currFace.Key);
foreach (ElementId generatingElementId in generatingElementIds)
{
HashSet <Face> elementFaces;
if (cuttingElementFaces.ContainsKey(generatingElementId))
{
elementFaces = cuttingElementFaces[generatingElementId];
}
else
{
elementFaces = new HashSet <Face>();
cuttingElementFaces[generatingElementId] = elementFaces;
}
elementFaces.Add(currFace.Key);
}
}
IDictionary <ElementId, ICollection <ICollection <Face> > > cuttingElementFaceCollections =
new Dictionary <ElementId, ICollection <ICollection <Face> > >();
foreach (KeyValuePair <ElementId, HashSet <Face> > cuttingElementFaceCollection in cuttingElementFaces)
{
ICollection <ICollection <Face> > faceCollections = new List <ICollection <Face> >();
// Split into separate collections based on connectivity.
while (cuttingElementFaceCollection.Value.Count > 0)
{
IList <Face> currCollection = new List <Face>();
IEnumerator <Face> cuttingElementFaceCollectionEnumerator = cuttingElementFaceCollection.Value.GetEnumerator();
cuttingElementFaceCollectionEnumerator.MoveNext();
Face currFace = cuttingElementFaceCollectionEnumerator.Current;
currCollection.Add(currFace);
cuttingElementFaceCollection.Value.Remove(currFace);
IList <Face> facesToProcess = new List <Face>();
facesToProcess.Add(currFace);
if (cuttingElementFaceCollection.Value.Count > 0)
{
while (facesToProcess.Count > 0)
{
EdgeArray faceOuterBoundary = facesToProcess[0].EdgeLoops.get_Item(0);
foreach (Edge edge in faceOuterBoundary)
{
Face adjoiningFace = edge.get_Face(1);
if (adjoiningFace.Equals(currFace))
{
adjoiningFace = edge.get_Face(0);
}
if (cuttingElementFaceCollection.Value.Contains(adjoiningFace))
{
currCollection.Add(adjoiningFace);
cuttingElementFaceCollection.Value.Remove(adjoiningFace);
facesToProcess.Add(adjoiningFace);
}
}
facesToProcess.Remove(facesToProcess[0]);
}
}
faceCollections.Add(currCollection);
}
cuttingElementFaceCollections[cuttingElementFaceCollection.Key] = faceCollections;
}
return(cuttingElementFaceCollections);
}
