/// <summary>
/// Parses the shell information for a 3DReferenceRep out of the xml document into the internal representation.
/// the methods opens external 3DReferenceRep files automatically.
/// </summary>
/// <param name="threeDReferenceRepXmlElement">The 3DReferenceRep xml representation with all attributes and sup nodes</param>
/// <param name="nameOfExternalRepFileDiscription">
/// name of the external 3DReferenceRep xml file, is empty if the
/// representation is in the same file.
/// </param>
/// <param name="archive">The unziped file archive of the 3dxml model</param>
/// <returns>A Shell of a Mesh, which is holding the trinagular information.</returns>
private static Shell GetShell(XElement threeDReferenceRepXmlElement, string nameOfExternalRepFileDiscription,
IThreeDXMLArchive archive)
{
XDocument xmlReferenceRep;
IList <Triangle> triangles = new List <Triangle>();
if (nameOfExternalRepFileDiscription != null && nameOfExternalRepFileDiscription.Any())
{
xmlReferenceRep = archive.GetNextDocument(ParseUtility.CleanUpFileName(nameOfExternalRepFileDiscription));
}
else
{
xmlReferenceRep = threeDReferenceRepXmlElement.Document;
}
var bagReps = GetBagRepXmlElements(xmlReferenceRep);
foreach (var bagRep in bagReps)
{
IList <XElement> faces =
bagRep.Descendants("{http://www.3ds.com/xsd/3DXML}Faces")
.Where(x => x.Parent.Name.LocalName.ToLower() != "polygonallod")
.ToList();
var verticies = GetVerticesFromXml(bagRep);
foreach (var face in faces.Elements("{http://www.3ds.com/xsd/3DXML}Face"))
{
triangles = triangles.Concat(GetTrianglesFromXml(face, verticies)).ToList();
triangles = triangles.Concat(GetFansFromXml(face, verticies)).ToList();
triangles = triangles.Concat(GetStripsFromXml(face, verticies)).ToList();
}
}
return(new Shell(triangles));
}
/// <summary>
/// Reads the manifest(the entry point for the 3Dxml parsing) and datamines where to start.
/// </summary>
/// <param name="archive">The unziped file archive of the 3dxml model</param>
/// <returns></returns>
public static XDocument ReadManifest(IThreeDXMLArchive archiv)
{
var manifest = archiv.GetManifest();
//check if the manifest contains the asset information, if the root element is not the manifest then load and return it.
var rootElement = manifest.Root.Element("Root");
if (rootElement != null && !rootElement.IsEmpty)
{
manifest = archiv.GetNextDocument(CleanUpFileName(rootElement.Value));
}
return(manifest);
}
