private static MeshModel DeserializeComposite(ZipArchive zipFile)
{
var metadata = MeshModelMetadata.ExtractFrom(zipFile);
var partCount = metadata.PartCount;
// Vorschaubild lesen
byte[] thumbnail = null;
if (partCount != 1)
{
var entry = zipFile.GetEntry("PreviewImage.png");
if (entry != null)
{
using (var entryStream = entry.Open())
{
thumbnail = MeshModelHelper.StreamToArray(entryStream);
}
}
}
// Parts lesen
var parts = new List <MeshModelPart>(partCount);
for (var i = 0; i < partCount; i += 1)
{
parts.Add(MeshModelPart.Deserialize(zipFile, i.ToString()));
}
return(new MeshModel(metadata, thumbnail, parts.ToArray()));
}
/// <summary>
/// Deserializes a <see cref="MeshModel"/> from the specified <paramref name="stream"/>
/// </summary>
public static MeshModel Deserialize(Stream stream)
{
if (!stream.CanSeek)
{
stream = new MemoryStream(MeshModelHelper.StreamToArray(stream));
}
using (var zipFile = new ZipArchive(stream))
{
var formatData = MeshModelFormatData.ExtractFrom(zipFile);
// Versionschecks
var fileVersion = formatData.FileVersion;
if (fileVersion == null)
{
throw new InvalidOperationException(MeshModelHelper.GetResource <MeshModel>("OldFileVersionError_Text"));
}
if (fileVersion.Major > MeshModelFileVersion.Major)
{
throw new InvalidOperationException(MeshModelHelper.FormatResource <MeshModel>("FileVersionError_Text", fileVersion, MeshModelFileVersion));
}
// Modelldaten laden
return(formatData.Type == MeshModelType.Part
? DeserializeSinglePart(zipFile)
: DeserializeComposite(zipFile));
}
}
/// <summary>
/// Initializes this instance with the serialized metadata from the specified archive.
/// </summary>
public static MeshModelFormatData ExtractFrom(ZipArchive archive)
{
var entry = archive.GetEntry("Metadata.xml");
if (entry == null)
{
throw new InvalidOperationException(MeshModelHelper.FormatResource <MeshModel>("InvalidFormatMissingManifest_ErrorText", "Metadata.xml"));
}
using (var entryStream = entry.Open())
{
var result = ReadFrom(entryStream);
return(result);
}
}
internal static Edge Read(BinaryReader binaryReader, Version fileVersion)
{
float[] positions = null;
string[] layer = null;
Color? color = null;
var name = string.Empty;
if (fileVersion >= FileVersion21)
{
name = binaryReader.ReadString();
}
if (binaryReader.ReadBoolean())
{
color = binaryReader.ReadArgbColor();
}
if (binaryReader.ReadBoolean())
{
positions = fileVersion == FileVersion10
? binaryReader.ReadDoubleArray(3)
: binaryReader.ReadFloatArray(3);
if (fileVersion < FileVersion32)
{
positions = MeshModelHelper.RemoveDuplicatePositions(positions);
}
}
if (binaryReader.ReadBoolean())
{
layer = new string[binaryReader.ReadInt32()];
for (var l = 0; l < layer.Length; l++)
{
layer[l] = binaryReader.ReadString();
}
}
return(new Edge(positions, color, layer, name));
}
/// <summary>
/// Reads the data from the specified <paramref name="subFolder"/> in the specified <paramref name="zipFile"/> and deserializes the data found in it.
/// If no <paramref name="subFolder"/> is specified, the method deserializes the data in the <paramref name="zipFile"/>s root directory.
/// </summary>
public static MeshModelPart Deserialize(ZipArchive zipFile, string subFolder = "")
{
var result = new MeshModelPart(new MeshModelMetadata());
var fileVersion10 = new Version(1, 0, 0, 0);
// Metadaten lesen
using (var entryStream = zipFile.GetEntry(Path.Combine(subFolder, "Metadata.xml")).Open())
{
result.Metadata = MeshModelMetadata.ReadFrom(entryStream);
}
// Versionscheck
var fileVersion = result.Metadata.FileVersion;
if (fileVersion < fileVersion10)
{
throw new InvalidOperationException(MeshModelHelper.GetResource <MeshModel>("OldFileVersionError_Text"));
}
if (fileVersion.Major > MeshModel.MeshModelFileVersion.Major)
{
throw new InvalidOperationException(MeshModelHelper.FormatResource <MeshModel>("FileVersionError_Text", fileVersion, MeshModel.MeshModelFileVersion));
}
// Vorschaubild lesen
var thumbnailEntry = zipFile.GetEntry(Path.Combine(subFolder, "PreviewImage.png"));
if (thumbnailEntry != null)
{
using (var entryStream = thumbnailEntry.Open())
{
result._Thumbnail = MeshModelHelper.StreamToArray(entryStream);
}
}
// Triangulierungsdaten lesen
using (var binaryReader = new BinaryReader(zipFile.GetEntry(Path.Combine(subFolder, "Meshes.dat")).Open()))
{
var meshCount = binaryReader.ReadInt32();
var meshes = new List <Mesh>(meshCount);
for (var i = 0; i < meshCount; i++)
{
meshes.Add(Mesh.Read(binaryReader, i, fileVersion));
}
result.Meshes = meshes.ToArray();
}
// Edgedaten lesen
using (var binaryReader = new BinaryReader(zipFile.GetEntry(Path.Combine(subFolder, "Edges.dat")).Open()))
{
var edgeCount = binaryReader.ReadInt32();
var edges = new List <Edge>(edgeCount);
for (var i = 0; i < edgeCount; i++)
{
edges.Add(Edge.Read(binaryReader, fileVersion));
}
// we don't try to create a single-point edge
result.Edges = edges.Where(e => e.Points?.Length > 3).ToArray();
}
// Datenwerte lesen
var meshValueList = new List <MeshValueList>(result.Metadata.MeshValueEntries?.Length ?? 0);
foreach (var entry in result.Metadata.MeshValueEntries ?? new MeshValueEntry[0])
{
using (var binaryReader = new BinaryReader(zipFile.GetEntry(Path.Combine(subFolder, entry.Filename)).Open()))
{
meshValueList.Add(MeshValueList.Read(binaryReader, entry, fileVersion));
}
}
result.MeshValues = meshValueList.ToArray();
// falls Guid noch nicht Teil der Metadaten war, dann hier stabile (und hoffentlich eindeutige) Guid den Metadaten zuweisen
if (fileVersion < new Version(3, 1, 0, 0))
{
result.Metadata.Guid = MeshModelGuidGenerator.GenerateGuids(zipFile.Entries.Where(e => string.Equals(Path.GetDirectoryName(e.FullName), subFolder, StringComparison.OrdinalIgnoreCase)));
}
return(result);
}
/// <summary>
/// Deserializes a <see cref="MeshModel"/> from the specified <paramref name="stream"/>
/// </summary>
public static MeshModel Deserialize(Stream stream)
{
MeshModel result;
if (!stream.CanSeek)
{
stream = new MemoryStream(MeshModelHelper.StreamToArray(stream));
}
using (var zipFile = new ZipArchive(stream))
{
// Metadaten lesen
MeshModelMetadata metadata;
using (var entryStream = zipFile.GetEntry("Metadata.xml").Open())
{
metadata = MeshModelMetadata.ReadFrom(entryStream);
}
var partCount = metadata.PartCount;
// Versionscheck
var fileVersion = metadata.FileVersion;
if (fileVersion == null)
{
throw new InvalidOperationException(MeshModelHelper.GetResource <MeshModel>("OldFileVersionError_Text"));
}
if (fileVersion.Major > MeshModelFileVersion.Major)
{
throw new InvalidOperationException(MeshModelHelper.FormatResource <MeshModel>("FileVersionError_Text", fileVersion, MeshModelFileVersion));
}
// Vorschaubild lesen
byte[] thumbnail = null;
if (partCount != 1)
{
var entry = zipFile.GetEntry("PreviewImage.png");
if (entry != null)
{
using (var entryStream = entry.Open())
{
thumbnail = MeshModelHelper.StreamToArray(entryStream);
}
}
}
// Modelldaten laden
if (partCount == 1)
{
result = new MeshModel(MeshModelPart.Deserialize(zipFile));
}
else
{
var parts = new List <MeshModelPart>(partCount);
for (var i = 0; i < partCount; i += 1)
{
parts.Add(MeshModelPart.Deserialize(zipFile, i.ToString()));
}
result = new MeshModel(metadata, thumbnail, parts.ToArray());
// falls Guid noch nicht Teil der Metadaten war, dann hier stabile (und hoffentlich eindeutige) Guid den Metadaten zuweisen
if (fileVersion < new Version(3, 1, 0, 0))
{
metadata.Guid = MeshModelGuidGenerator.GenerateGuids(zipFile.Entries);
}
}
}
return(result);
}
/// <summary>
/// Extracts the <see cref="MeshModelMetadata"/> from the specified <paramref name="stream"/>.
/// </summary>
/// <remarks>
/// The stream must contain a meshmodel file which has been created with the <see cref="MeshModel.Serialize(Stream)"/> method.
/// </remarks>
public static MeshModelMetadata ExtractFromStream(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
using (var zipFile = new ZipArchive(stream.CanSeek ? stream : new MemoryStream(MeshModelHelper.StreamToArray(stream)), ZipArchiveMode.Read))
using (var entryStream = zipFile.GetEntry("Metadata.xml").Open())
{
var result = ReadFrom(entryStream);
// falls Guid noch nicht Teil der Metadaten war, dann hier stabile (und hoffentlich eindeutige) Guid den Metadaten zuweisen
if (result.FileVersion < new Version(3, 1, 0, 0))
{
result.Guid = MeshModelGuidGenerator.GenerateGuids(zipFile.Entries);
}
return(result);
}
}
private static MeshModelMetadata ReadFrom(Stream stream, IGuidGenerator fallbackGuidGenerator)
{
// Needed for later property validation
var hasGuid = false;
var hasName = false;
var hasPartCount = false;
var settings = new XmlReaderSettings
{
IgnoreComments = true,
IgnoreWhitespace = true,
IgnoreProcessingInstructions = true,
CloseInput = false,
NameTable = new NameTable()
};
using (var reader = XmlReader.Create(stream, settings))
{
var result = new MeshModelMetadata();
reader.MoveToElement();
while (reader.Read())
{
switch (reader.Name)
{
case "Guid":
result.Guid = Guid.ParseExact(reader.ReadString(), "N");
hasGuid = true;
break;
case "TriangulationHash":
result.TriangulationHash = Guid.ParseExact(reader.ReadString(), "N");
break;
case "Name":
result.Name = reader.ReadString();
hasName = true;
break;
case "PartCount":
result.PartCount = int.Parse(reader.ReadString(), System.Globalization.CultureInfo.InvariantCulture);
hasPartCount = true;
break;
case "FileVersion":
result.FileVersion = new Version(reader.ReadString());
break;
case "SourceFormat":
result.SourceFormat = reader.ReadString();
break;
case "Layer":
var layer = new List <string>();
while (reader.Read() && reader.NodeType != XmlNodeType.EndElement)
{
layer.Add(reader.ReadString());
}
result.Layer = layer.ToArray();
break;
case "SourceModels":
var sourceModels = new List <string>();
while (reader.Read() && reader.NodeType != XmlNodeType.EndElement)
{
sourceModels.Add(reader.ReadString());
}
result.SourceModels = sourceModels.ToArray();
break;
case "MeshValueEntries":
var entries = new List <MeshValueEntry>();
while (reader.Read() && reader.NodeType != XmlNodeType.EndElement)
{
if (reader.Name == "MeshValueEntry")
{
entries.Add(MeshValueEntry.Read(reader));
}
}
result.MeshValueEntries = entries.ToArray();
break;
}
}
// validation for mendatory properties since version 5.1.0.0 and missing Guid fallback for older versions
if (result.FileVersion != null && result.FileVersion >= new Version(5, 1, 0, 0))
{
if (!hasGuid)
{
throw new InvalidOperationException(MeshModelHelper.FormatResource <MeshModel>("InvalidFormatMissingProperty_ErrorText", "Guid"));
}
if (!hasName)
{
throw new InvalidOperationException(MeshModelHelper.FormatResource <MeshModel>("InvalidFormatMissingProperty_ErrorText", "Name"));
}
if (!hasPartCount)
{
throw new InvalidOperationException(MeshModelHelper.FormatResource <MeshModel>("InvalidFormatMissingProperty_ErrorText", "PartCount"));
}
}
else
{
if (!hasGuid)
{
result.Guid = fallbackGuidGenerator.CreateGuid();
}
}
return(result);
}
}
/// <summary>
/// Extracts the <see cref="MeshModelMetadata"/> from the specified <paramref name="stream"/>.
/// </summary>
/// <remarks>
/// The stream must contain a meshmodel file which has been created with the <see cref="MeshModel.Serialize(Stream)"/> method.
/// </remarks>
public static MeshModelMetadata ExtractFrom(Stream stream, string subFolder = "")
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
using (var zipFile = new ZipArchive(stream.CanSeek ? stream : new MemoryStream(MeshModelHelper.StreamToArray(stream)), ZipArchiveMode.Read))
return(ExtractFrom(zipFile, subFolder));
}
/// <summary>
/// Reads the data from the specified <paramref name="subFolder"/> in the specified <paramref name="zipFile"/> and deserializes the data found in it.
/// If no <paramref name="subFolder"/> is specified, the method deserializes the data in the <paramref name="zipFile"/>s root directory.
/// </summary>
public static MeshModelPart Deserialize(ZipArchive zipFile, string subFolder = "")
{
var fileVersion10 = new Version(1, 0, 0, 0);
var result = new MeshModelPart(new MeshModelMetadata());
result.Metadata = MeshModelMetadata.ExtractFrom(zipFile, subFolder);
// Versionschecks
var fileVersion = result.Metadata.FileVersion;
if (fileVersion < fileVersion10)
{
throw new InvalidOperationException(MeshModelHelper.GetResource <MeshModel>("OldFileVersionError_Text"));
}
if (fileVersion.Major > MeshModel.MeshModelFileVersion.Major)
{
throw new InvalidOperationException(MeshModelHelper.FormatResource <MeshModel>("FileVersionError_Text", fileVersion, MeshModel.MeshModelFileVersion));
}
// Vorschaubild lesen
var thumbnailEntry = zipFile.GetEntry(Path.Combine(subFolder, "PreviewImage.png"));
if (thumbnailEntry != null)
{
using (var entryStream = thumbnailEntry.Open())
{
result._Thumbnail = MeshModelHelper.StreamToArray(entryStream);
}
}
// Triangulierungsdaten lesen
using (var binaryReader = new BinaryReader(zipFile.GetEntry(Path.Combine(subFolder, "Meshes.dat")).Open()))
{
var meshCount = binaryReader.ReadInt32();
var meshes = new List <Mesh>(meshCount);
for (var i = 0; i < meshCount; i++)
{
meshes.Add(Mesh.Read(binaryReader, i, fileVersion));
}
result.Meshes = meshes.ToArray();
}
// Edgedaten lesen
using (var binaryReader = new BinaryReader(zipFile.GetEntry(Path.Combine(subFolder, "Edges.dat")).Open()))
{
var edgeCount = binaryReader.ReadInt32();
var edges = new List <Edge>(edgeCount);
for (var i = 0; i < edgeCount; i++)
{
edges.Add(Edge.Read(binaryReader, fileVersion));
}
// we don't try to create a single-point edge
result.Edges = edges.Where(e => e.Points?.Length > 3).ToArray();
}
// Datenwerte lesen
var meshValueList = new List <MeshValueList>(result.Metadata.MeshValueEntries?.Length ?? 0);
foreach (var entry in result.Metadata.MeshValueEntries ?? new MeshValueEntry[0])
{
using (var binaryReader = new BinaryReader(zipFile.GetEntry(Path.Combine(subFolder, entry.Filename)).Open()))
{
meshValueList.Add(MeshValueList.Read(binaryReader, entry, fileVersion));
}
}
result.MeshValues = meshValueList.ToArray();
return(result);
}
/// <summary>
/// Extracts the <see cref="MeshModelFormatData"/> from the specified <paramref name="stream"/>.
/// </summary>
/// <remarks>
/// The stream must contain a meshmodel file which has been created with the <see cref="MeshModel.Serialize(Stream)"/> method.
/// </remarks>
public static MeshModelFormatData ExtractFrom(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
using (var zipFile = new ZipArchive(stream.CanSeek ? stream : new MemoryStream(MeshModelHelper.StreamToArray(stream)), ZipArchiveMode.Read))
{
return(ExtractFrom(zipFile));
}
}
