/// <summary>
/// Load the mesh from a stream
/// </summary>
/// <param name="filename">The filename and path of the file containing the mesh data</param>
public virtual void LoadMesh(string filename)
{
using (FileStream meshData = new FileStream(filename, FileMode.Open, FileAccess.Read))
using (EndianAwareBinaryReader reader = new EndianAwareBinaryReader(meshData))
{
Header = TrimAt0(reader.ReadString(24));
if (!String.Equals(Header, MeshHeader))
{
throw new FileLoadException("Unrecognized mesh format");
}
// Populate base mesh parameters
HasWeights = (reader.ReadByte() != 0);
HasDetailTexCoords = (reader.ReadByte() != 0);
Position = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
RotationAngles = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
/* RotationOrder = */
reader.ReadByte();
Scale = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
// Populate the vertex array
NumVertices = reader.ReadUInt16();
Vertices = new Vertex[NumVertices];
for (int i = 0; i < NumVertices; i++)
{
Vertices[i].Coord = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
}
for (int i = 0; i < NumVertices; i++)
{
Vertices[i].Normal = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
}
for (int i = 0; i < NumVertices; i++)
{
Vertices[i].BiNormal = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
}
for (int i = 0; i < NumVertices; i++)
{
Vertices[i].TexCoord = new Vector2(reader.ReadSingle(), reader.ReadSingle());
}
if (HasDetailTexCoords)
{
for (int i = 0; i < NumVertices; i++)
{
Vertices[i].DetailTexCoord = new Vector2(reader.ReadSingle(), reader.ReadSingle());
}
}
if (HasWeights)
{
for (int i = 0; i < NumVertices; i++)
{
Vertices[i].Weight = reader.ReadSingle();
}
}
NumFaces = reader.ReadUInt16();
Faces = new Face[NumFaces];
for (int i = 0; i < NumFaces; i++)
{
Faces[i].Indices = new[] { reader.ReadInt16(), reader.ReadInt16(), reader.ReadInt16() }
}
;
if (HasWeights)
{
NumSkinJoints = reader.ReadUInt16();
SkinJoints = new string[NumSkinJoints];
for (int i = 0; i < NumSkinJoints; i++)
{
SkinJoints[i] = TrimAt0(reader.ReadString(64));
}
}
else
{
NumSkinJoints = 0;
SkinJoints = new string[0];
}
// Grab morphs
List <Morph> morphs = new List <Morph>();
string morphName = TrimAt0(reader.ReadString(64));
while (morphName != MorphFooter)
{
if (reader.BaseStream.Position + 48 >= reader.BaseStream.Length)
{
throw new FileLoadException("Encountered end of file while parsing morphs");
}
Morph morph = new Morph();
morph.Name = morphName;
morph.NumVertices = reader.ReadInt32();
morph.Vertices = new MorphVertex[morph.NumVertices];
for (int i = 0; i < morph.NumVertices; i++)
{
morph.Vertices[i].VertexIndex = reader.ReadUInt32();
morph.Vertices[i].Coord = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
morph.Vertices[i].Normal = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
morph.Vertices[i].BiNormal = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
morph.Vertices[i].TexCoord = new Vector2(reader.ReadSingle(), reader.ReadSingle());
}
morphs.Add(morph);
// Grab the next name
morphName = TrimAt0(reader.ReadString(64));
}
Morphs = morphs.ToArray();
// Check if there are remaps or if we're at the end of the file
if (reader.BaseStream.Position < reader.BaseStream.Length - 1)
{
NumRemaps = reader.ReadInt32();
VertexRemaps = new VertexRemap[NumRemaps];
for (int i = 0; i < NumRemaps; i++)
{
VertexRemaps[i].RemapSource = reader.ReadInt32();
VertexRemaps[i].RemapDestination = reader.ReadInt32();
}
}
else
{
NumRemaps = 0;
VertexRemaps = new VertexRemap[0];
}
}
// uncompress the skin weights
if (Skeleton != null)
{
// some meshes aren't weighted, which doesn't make much sense.
// we check for left and right eyeballs, and assign them a 100%
// to their respective bone
List <string> expandedJointList = Skeleton.BuildExpandedJointList(SkinJoints);
if (expandedJointList.Count == 0)
{
if (Name == "eyeBallLeftMesh")
{
expandedJointList.AddRange(new[] { "mEyeLeft", "mSkull" });
}
else if (Name == "eyeBallRightMesh")
{
expandedJointList.AddRange(new[] { "mEyeRight", "mSkull" });
}
}
if (expandedJointList.Count > 0)
{
ExpandCompressedSkinWeights(expandedJointList);
}
}
}
