static ThreeDSFileData ParseFromData(DataReader3DS data)
{
DataReader3DS dataSubSegment = null;
if ((ChunkCodes)data.Tag == ChunkCodes.PRIMARY)
{
dataSubSegment = data.GetNextSubSegment();
}
else
return null;
ThreeDSFileData file = new ThreeDSFileData();
while (dataSubSegment != null)
{
// Check the tag to see what sort of data is in this subsegment (or "chunk")
switch ((ChunkCodes)dataSubSegment.Tag)
{
case ChunkCodes.VERSION:
file.version = dataSubSegment.GetUShort();
break;
case ChunkCodes.EDIT3DS:
Parse3DSData(dataSubSegment, file);
break;
default:
break;
}
dataSubSegment = data.GetNextSubSegment();
}
return file;
}
/// <summary>
/// Moves to the next subsegment of data in the data stream.
/// </summary>
/// <returns>Returns the next subsegment of data in the data stream.</returns>
public DataReader3DS GetNextSubSegment()
{
if (currentSegment.BaseStream.Position > 3700000)
{
System.Diagnostics.Debug.WriteLine("Breaking...");
}
if ((ulong)currentSegment.BaseStream.Position < (size - HeaderSize))
{
if (currentSubSegment != null)
{
currentSegment.BaseStream.Position += (long)currentSubSegment.Size;
currentSubSegment = null;
}
//currentSubSegment = new DataReader3DS(sourceData,
// (int)currentSegment.BaseStream.Position,
// (int)(currentSegment.BaseStream.Length - currentSegment.BaseStream.Position));
if ((currentSegment.BaseStream.Length - currentSegment.BaseStream.Position) > 0)
{
currentSubSegment = new DataReader3DS(sourceData, (int)(myStreamOffset +
(ulong)currentSegment.BaseStream.Position),
(int)(currentSegment.BaseStream.Length -
currentSegment.BaseStream.Position));
}
}
else
{
currentSubSegment = null;
}
return(currentSubSegment);
}
private static ThreeDSObject ParseMeshData(DataReader3DS dataSegment)
{
string name = dataSegment.GetString();
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
ThreeDSObject obj = new ThreeDSObject();
obj.name = name;
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.OBJ_MESH: // Current subsegment contains the polygonal information
obj.meshes.Add(ParsePolygonalData(subSegment));
break;
default: // Ignore all other subsegment types
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
return(obj);
}
private static ThreeDSMesh.FaceGroup ParseFaceData(DataReader3DS dataSegment)
{
DataReader3DS subSegment; // will be used to read other subsegments (do not initialize yet)
ThreeDSMesh.FaceGroup group = new ThreeDSMesh.FaceGroup();
group.faces = new ThreeDSMesh.Face[dataSegment.GetUShort()];
// Read face data
for (int face = 0; face < group.faces.Length; face++)
{
group.faces[face].p1 = dataSegment.GetUShort();
group.faces[face].p2 = dataSegment.GetUShort();
group.faces[face].p3 = dataSegment.GetUShort();
// Ignore flag
dataSegment.GetUShort();
}
// Read other subsegments
subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MESH_MATER: // Name of material used
group.mappings.Add(ParseMeshMaterial(subSegment));
break;
case ChunkCodes.TRI_SMOOTH:
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
return(group);
}
/// <summary>
/// Creates a DataReader3DS object.
/// </summary>
/// <param name="inputData">Contains array of data bytes.</param>
public DataReader3DS(byte[] inputData)
{
sourceData = inputData;
myStreamOffset = 0;
sourceStream = new MemoryStream(sourceData);
dataReader = new BinaryReader(sourceStream);
tag = dataReader.ReadUInt16();
size = (ulong)dataReader.ReadInt32();
currentSubSegment = null;
currentSegment = dataReader;
}
/// <summary>
/// Internal constructor that creates a DataReader3DS object.
/// </summary>
/// <param name="inputData">Contains array of data bytes.</param>
/// <param name="startingPoint">Specified starting location.</param>
/// <param name="length">Specified length.</param>
protected DataReader3DS(byte[] inputData, int startingPoint, int length)
{
sourceData = inputData;
myStreamOffset = (ulong)startingPoint;
sourceStream = new MemoryStream(sourceData, startingPoint, length);
dataReader = new BinaryReader(sourceStream);
tag = dataReader.ReadUInt16();
size = (ulong)dataReader.ReadInt32();
currentSubSegment = null;
currentSegment = dataReader;
}
/// <summary>
/// Internal constructor that creates a DataReader3DS object.
/// </summary>
/// <param name="inputData">Contains array of data bytes.</param>
/// <param name="startingPoint">Specified starting location.</param>
/// <param name="length">Specified length.</param>
protected DataReader3DS(byte[] inputData, int startingPoint, int length)
{
sourceData = inputData;
myStreamOffset = (ulong)startingPoint;
sourceStream = new MemoryStream(sourceData, startingPoint, length);
dataReader = new BinaryReader(sourceStream);
tag = dataReader.ReadUInt16();
size = (ulong)dataReader.ReadInt32();
currentSubSegment = null;
currentSegment = dataReader;
}
/// <summary>
/// Creates a DataReader3DS object.
/// </summary>
/// <param name="inputData">Contains array of data bytes.</param>
public DataReader3DS(byte[] inputData)
{
sourceData = inputData;
myStreamOffset = 0;
sourceStream = new MemoryStream(sourceData);
dataReader = new BinaryReader(sourceStream);
tag = dataReader.ReadUInt16();
size = (ulong)dataReader.ReadInt32();
currentSubSegment = null;
currentSegment = dataReader;
}
private static ThreeDSMesh.Material ParseMaterialData(DataReader3DS dataSegment)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
ThreeDSMesh.Material mat = new ThreeDSMesh.Material();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MAT_NAME: // Subsegment holds material name
mat.name = subSegment.GetString();
break;
case ChunkCodes.MAT_AMBIENT: // Subsegment holds ambient color
mat.ambient = ParseColorData(subSegment.GetNextSubSegment());
break;
case ChunkCodes.MAT_DIFFUSE: // Subsegment holds diffuse color (this is iffy...)
mat.diffuse = ParseColorData(subSegment.GetNextSubSegment());
break;
case ChunkCodes.MAT_TEXMAP: // Subsegment holds texture map info
/*ParseTextureWeight(*/ subSegment.GetNextSubSegment();
mat.texture = subSegment.GetNextSubSegment().GetString();
break;
default: // Ignore all other subsegment types
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Check if this is a duplicate material entry (by name)
// NOTE: Duplicate material name update should be in form materialname_submeshname
/*if (materialDataStore.ContainsKey(currentMaterialData.name))
* {
* // Select an "owning" submesh for the material
* referencingSubmeshes = (ArrayList)(submeshesUsingMaterials[currentMaterialData.name]);
* owningSubmesh = (SubmeshData3DS)(referencingSubmeshes[referencingSubmeshes.Count - 1]);
* // Qualify the material name with the submesh's name as well (see above note)
* currentMaterialData.name = currentMaterialData.name + "_" + owningSubmesh.name;
* owningSubmesh.materialUsed = currentMaterialData.name;
* // Clean up and update submesh reference lists
* referencingSubmeshes.RemoveAt(referencingSubmeshes.Count - 1);
* referencingSubmeshes = new ArrayList();
* referencingSubmeshes.Add(owningSubmesh);
* submeshesUsingMaterials.Add(currentMaterialData.name, referencingSubmeshes);
* }*/
return(mat);
}
private static ThreeDSMesh.UV[] ParseTexVerts(DataReader3DS subSegment)
{
ThreeDSMesh.UV[] uv = new ThreeDSMesh.UV[subSegment.GetUShort()];
for (int coord = 0; coord < uv.Length; coord++)
{
uv[coord].u = subSegment.GetFloat();
uv[coord].v = subSegment.GetFloat();
}
return(uv);
}
private static ThreeDSMesh.MaterialMapping ParseMeshMaterial(DataReader3DS subSegment)
{
ThreeDSMesh.MaterialMapping mapping = new ThreeDSMesh.MaterialMapping();
mapping.name = subSegment.GetString();
// Read mapped faces
mapping.mappedFaces = new ushort[subSegment.GetUShort()];
for (int face = 0; face < mapping.mappedFaces.Length; face++)
{
mapping.mappedFaces[face] = subSegment.GetUShort();
}
return(mapping);
}
protected const ushort HeaderSize = 6; // = (size of 'tag') + (size of 'size')
#endregion
#region Constructor(s)
public DataReader3DS(string filename)
{
FileStream file = new FileStream(filename, FileMode.Open);
byte[] data = new byte[file.Length];
file.Read(data, 0, (int)file.Length);
file.Close();
sourceData = data;
myStreamOffset = 0;
sourceStream = new MemoryStream(sourceData);
dataReader = new BinaryReader(sourceStream);
tag = dataReader.ReadUInt16();
size = (ulong)dataReader.ReadInt32();
currentSubSegment = null;
currentSegment = dataReader;
}
protected const ushort HeaderSize = 6; // = (size of 'tag') + (size of 'size')
#endregion
#region Constructor(s)
public DataReader3DS(string filename)
{
FileStream file = new FileStream(filename, FileMode.Open);
byte[] data = new byte[file.Length];
file.Read(data, 0, (int)file.Length);
file.Close();
sourceData = data;
myStreamOffset = 0;
sourceStream = new MemoryStream(sourceData);
dataReader = new BinaryReader(sourceStream);
tag = dataReader.ReadUInt16();
size = (ulong)dataReader.ReadInt32();
currentSubSegment = null;
currentSegment = dataReader;
}
private static void Parse3DSData(DataReader3DS dataSegment, ThreeDSFileData file)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MATERIAL:
file.materials.Add(ParseMaterialData(subSegment));
break;
case ChunkCodes.NAMED_OBJECT:
file.objects.Add(ParseMeshData(subSegment));
break;
default:
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
}
private static ThreeDSMesh ParsePolygonalData(DataReader3DS dataSegment)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment(); // working data subsegment
ThreeDSMesh mesh = new ThreeDSMesh();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MESH_VERTICES: // Subsegment contains vertex information
mesh.verticies = new ThreeDSMesh.Vertex[subSegment.GetUShort()];
for (int vertex = 0; vertex < mesh.verticies.Length; vertex++)
{
mesh.verticies[vertex].x = subSegment.GetFloat();
mesh.verticies[vertex].y = subSegment.GetFloat();
mesh.verticies[vertex].z = subSegment.GetFloat();
}
break;
case ChunkCodes.MESH_XFMATRIX: // Subsegment contains translation matrix info (ignore for now)
break;
case ChunkCodes.MESH_FACES: // Subsegment contains face information
mesh.groups.Add(ParseFaceData(subSegment));
break;
case ChunkCodes.MESH_TEX_VERT: // Subsegment contains texture mapping information
mesh.uvMap = ParseTexVerts(subSegment);
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Also use face data to calculate vertex normals
CalculateVertexNormals(mesh);
return(mesh);
}
private static ThreeDSMesh.Colour ParseColorData(DataReader3DS dataSegment)
{
ThreeDSMesh.Colour clr = new ThreeDSMesh.Colour();
switch ((ChunkCodes)dataSegment.Tag)
{
case ChunkCodes.COLOR_F: // Color is in float format
clr.r = (byte)(1.0f / dataSegment.GetFloat());
clr.g = (byte)(1.0f / dataSegment.GetFloat());
clr.b = (byte)(1.0f / dataSegment.GetFloat());
break;
case ChunkCodes.COLOR_24: // Color is in byte format
clr.r = dataSegment.GetByte();
clr.g = dataSegment.GetByte();
clr.b = dataSegment.GetByte();
break;
default: // If there are any other formats, then we ignore them
break;
}
return(clr);
}
static ThreeDSFileData ParseFromData(DataReader3DS data)
{
DataReader3DS dataSubSegment = null;
if ((ChunkCodes)data.Tag == ChunkCodes.PRIMARY)
{
dataSubSegment = data.GetNextSubSegment();
}
else
{
return(null);
}
ThreeDSFileData file = new ThreeDSFileData();
while (dataSubSegment != null)
{
// Check the tag to see what sort of data is in this subsegment (or "chunk")
switch ((ChunkCodes)dataSubSegment.Tag)
{
case ChunkCodes.VERSION:
file.version = dataSubSegment.GetUShort();
break;
case ChunkCodes.EDIT3DS:
Parse3DSData(dataSubSegment, file);
break;
default:
break;
}
dataSubSegment = data.GetNextSubSegment();
}
return(file);
}
/// <summary>
/// Moves to the next subsegment of data in the data stream.
/// </summary>
/// <returns>Returns the next subsegment of data in the data stream.</returns>
public DataReader3DS GetNextSubSegment()
{
if (currentSegment.BaseStream.Position > 3700000)
System.Diagnostics.Debug.WriteLine("Breaking...");
if ((ulong)currentSegment.BaseStream.Position < (size - HeaderSize))
{
if (currentSubSegment != null)
{
currentSegment.BaseStream.Position += (long)currentSubSegment.Size;
currentSubSegment = null;
}
//currentSubSegment = new DataReader3DS(sourceData,
// (int)currentSegment.BaseStream.Position,
// (int)(currentSegment.BaseStream.Length - currentSegment.BaseStream.Position));
if ((currentSegment.BaseStream.Length - currentSegment.BaseStream.Position) > 0)
{
currentSubSegment = new DataReader3DS(sourceData, (int)(myStreamOffset +
(ulong)currentSegment.BaseStream.Position),
(int)(currentSegment.BaseStream.Length -
currentSegment.BaseStream.Position));
}
}
else
{
currentSubSegment = null;
}
return currentSubSegment;
}
public static ThreeDSFileData ParseFromFile(string file)
{
DataReader3DS data = new DataReader3DS(file);
return ParseFromData(data);
}
private static ThreeDSMesh.Colour ParseColorData(DataReader3DS dataSegment)
{
ThreeDSMesh.Colour clr = new ThreeDSMesh.Colour();
switch ((ChunkCodes)dataSegment.Tag)
{
case ChunkCodes.COLOR_F: // Color is in float format
clr.r = (byte)(1.0f / dataSegment.GetFloat());
clr.g = (byte)(1.0f / dataSegment.GetFloat());
clr.b = (byte)(1.0f / dataSegment.GetFloat());
break;
case ChunkCodes.COLOR_24: // Color is in byte format
clr.r = dataSegment.GetByte();
clr.g = dataSegment.GetByte();
clr.b = dataSegment.GetByte();
break;
default: // If there are any other formats, then we ignore them
break;
}
return clr;
}
private static ThreeDSMesh.Material ParseMaterialData(DataReader3DS dataSegment)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
ThreeDSMesh.Material mat = new ThreeDSMesh.Material();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MAT_NAME: // Subsegment holds material name
mat.name = subSegment.GetString();
break;
case ChunkCodes.MAT_AMBIENT: // Subsegment holds ambient color
mat.ambient = ParseColorData(subSegment.GetNextSubSegment());
break;
case ChunkCodes.MAT_DIFFUSE: // Subsegment holds diffuse color (this is iffy...)
mat.diffuse = ParseColorData(subSegment.GetNextSubSegment());
break;
case ChunkCodes.MAT_TEXMAP: // Subsegment holds texture map info
/*ParseTextureWeight(*/subSegment.GetNextSubSegment();
mat.texture = subSegment.GetNextSubSegment().GetString();
break;
default: // Ignore all other subsegment types
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Check if this is a duplicate material entry (by name)
// NOTE: Duplicate material name update should be in form materialname_submeshname
/*if (materialDataStore.ContainsKey(currentMaterialData.name))
{
// Select an "owning" submesh for the material
referencingSubmeshes = (ArrayList)(submeshesUsingMaterials[currentMaterialData.name]);
owningSubmesh = (SubmeshData3DS)(referencingSubmeshes[referencingSubmeshes.Count - 1]);
// Qualify the material name with the submesh's name as well (see above note)
currentMaterialData.name = currentMaterialData.name + "_" + owningSubmesh.name;
owningSubmesh.materialUsed = currentMaterialData.name;
// Clean up and update submesh reference lists
referencingSubmeshes.RemoveAt(referencingSubmeshes.Count - 1);
referencingSubmeshes = new ArrayList();
referencingSubmeshes.Add(owningSubmesh);
submeshesUsingMaterials.Add(currentMaterialData.name, referencingSubmeshes);
}*/
return mat;
}
private static ThreeDSMesh.MaterialMapping ParseMeshMaterial(DataReader3DS subSegment)
{
ThreeDSMesh.MaterialMapping mapping = new ThreeDSMesh.MaterialMapping();
mapping.name = subSegment.GetString();
// Read mapped faces
mapping.mappedFaces = new ushort[subSegment.GetUShort()];
for (int face = 0; face < mapping.mappedFaces.Length; face++)
{
mapping.mappedFaces[face] = subSegment.GetUShort();
}
return mapping;
}
private static ThreeDSMesh.FaceGroup ParseFaceData(DataReader3DS dataSegment)
{
DataReader3DS subSegment; // will be used to read other subsegments (do not initialize yet)
ThreeDSMesh.FaceGroup group = new ThreeDSMesh.FaceGroup();
group.faces = new ThreeDSMesh.Face[dataSegment.GetUShort()];
// Read face data
for (int face = 0; face < group.faces.Length; face++)
{
group.faces[face].p1 = dataSegment.GetUShort();
group.faces[face].p2 = dataSegment.GetUShort();
group.faces[face].p3 = dataSegment.GetUShort();
// Ignore flag
dataSegment.GetUShort();
}
// Read other subsegments
subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MESH_MATER: // Name of material used
group.mappings.Add(ParseMeshMaterial(subSegment));
break;
case ChunkCodes.TRI_SMOOTH:
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
return group;
}
private static ThreeDSMesh.UV[] ParseTexVerts(DataReader3DS subSegment)
{
ThreeDSMesh.UV[] uv = new ThreeDSMesh.UV[subSegment.GetUShort()];
for (int coord = 0; coord < uv.Length; coord++)
{
uv[coord].u = subSegment.GetFloat();
uv[coord].v = subSegment.GetFloat();
}
return uv;
}
private static ThreeDSMesh ParsePolygonalData(DataReader3DS dataSegment)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment(); // working data subsegment
ThreeDSMesh mesh = new ThreeDSMesh();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MESH_VERTICES: // Subsegment contains vertex information
mesh.verticies = new ThreeDSMesh.Vertex[subSegment.GetUShort()];
for (int vertex = 0; vertex < mesh.verticies.Length; vertex++)
{
mesh.verticies[vertex].x = subSegment.GetFloat();
mesh.verticies[vertex].y = subSegment.GetFloat();
mesh.verticies[vertex].z = subSegment.GetFloat();
}
break;
case ChunkCodes.MESH_XFMATRIX: // Subsegment contains translation matrix info (ignore for now)
break;
case ChunkCodes.MESH_FACES: // Subsegment contains face information
mesh.groups.Add(ParseFaceData(subSegment));
break;
case ChunkCodes.MESH_TEX_VERT: // Subsegment contains texture mapping information
mesh.uvMap = ParseTexVerts(subSegment);
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
// Also use face data to calculate vertex normals
CalculateVertexNormals(mesh);
return mesh;
}
private static ThreeDSObject ParseMeshData(DataReader3DS dataSegment)
{
string name = dataSegment.GetString();
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
ThreeDSObject obj = new ThreeDSObject();
obj.name = name;
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.OBJ_MESH: // Current subsegment contains the polygonal information
obj.meshes.Add(ParsePolygonalData(subSegment));
break;
default: // Ignore all other subsegment types
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
return obj;
}
private static void Parse3DSData(DataReader3DS dataSegment, ThreeDSFileData file)
{
DataReader3DS subSegment = dataSegment.GetNextSubSegment();
while (subSegment != null)
{
switch ((ChunkCodes)subSegment.Tag)
{
case ChunkCodes.MATERIAL:
file.materials.Add(ParseMaterialData(subSegment));
break;
case ChunkCodes.NAMED_OBJECT:
file.objects.Add(ParseMeshData(subSegment));
break;
default:
break;
}
subSegment = dataSegment.GetNextSubSegment();
}
}
public static ThreeDSFileData ParseFromFile(string file)
{
DataReader3DS data = new DataReader3DS(file);
return(ParseFromData(data));
}
