public static ushort?UpdateFaceDictionary(BaseNode node)
{
var triMesh = node.Mesh.TriMesh;
var polyMesh = node.Mesh.PolyMesh;
var faceCountPerID = new Dictionary <ushort, int>();
//Get numFaces of each ID
foreach (var ids in node.GetUsedMaterialIDsArray())
{
faceCountPerID.Add(ids, GetCardinality(node.GetMaterialBitArray(ids)));
}
//clear the materialFaceDictionary
node.ClearMaterialBitArray();
if (node.Mesh.TriMesh != null)
{
var numFaces = triMesh.NumFaces;
var parentNode = node as ParentNode;
//Build FaceID Dictionary.
for (int index = 0; index < numFaces; index++)
{
IFace face = triMesh.Faces[index];
ushort matID = face.MatID;
//This means it's a child node
if (parentNode == null)
{
UpdateNode(node, matID, index, numFaces);
}
//So it's a parentNode, but we don't want to update delete material IDs so check if that's not true
else if (!parentNode.IsMatIDDeleted(matID))
{
UpdateNode(node, matID, index, numFaces);
}
}
}
else
{
var numFaces = polyMesh.FNum;
var parentNode = node as ParentNode;
//Build FaceID Dictionary.
for (int index = 0; index < numFaces; index++)
{
IMNFace face = polyMesh.F(index);
ushort matID = face.Material;
if (parentNode == null)
{
UpdateNode(node, matID, index, numFaces);
}
else if (!parentNode.IsMatIDDeleted(matID))
{
UpdateNode(node, matID, index, numFaces);
}
}
}
foreach (var ids in node.GetUsedMaterialIDsArray())
{
int numFaces;
if (!faceCountPerID.TryGetValue(ids, out numFaces))
{
continue;
}
if (numFaces != GetCardinality(node.GetMaterialBitArray(ids)))
{
return(ids);
}
}
return(null);
}
