public Mesh(Stream stream, Resource[] resources, Section section, CompressionBounds boundingBox)
{
int StartOffset = (int)stream.Position;
BinaryReader br = new BinaryReader(stream);
stream.Position = 4;
Size = br.ReadInt32();
foreach (Resource r in resources)
{
stream.Position = StartOffset + 120 + r.RawDataOffset;
int Count=0;
switch (r.MainRawDataType)
{
case ResourceType.BoneMap:
BoneMap = br.ReadBytes(r.RawDataSize);
break;
case ResourceType.MeshInformation:
Groups = new Group[r.RawDataSize / 72];
for (int i = 0; i < Groups.Length; i++)
{
stream.Position = StartOffset + 120 + r.RawDataOffset + (i * 72);
Groups[i] = new Group(br.ReadBytes(Group.Size));
}
break;
case ResourceType.Vertex:
switch (r.SubRawDataType)
{
#region Vertices
case ResourceSubType.VertexData:
byte[] Bytes = br.ReadBytes(r.RawDataSize);
int Index = 0;
int Stride;
switch (section.VertexType)
{
case VertexType.Rigid: Stride = 0;//xyz
break;
case VertexType.RigidBoned: Stride = 2;//xyz
break;
case VertexType.Skinned: Stride = 6;//xyz
break;
default: throw new Exception();
}
if ((section.CompressionFlags & Compression.Position) != Compression.Position)
{
int VertexSize = 12 + Stride;
int VertexCount = Bytes.Length / VertexSize;
Index = 0;
_Vertices = new Vector3[VertexCount];
for (int i = 0; i < VertexCount; i++)
{
float x = BitConverter.ToSingle(Bytes, Index + 0);
float y = BitConverter.ToSingle(Bytes, Index + 4);
float z = BitConverter.ToSingle(Bytes, Index + 8);
_Vertices[i] = new Vector3(x, y, z);
Index += VertexSize;
}
}
else
{
int VertexSize = 6 + Stride;
int VertexCount = Bytes.Length / VertexSize;
Index = 0;
_Vertices = new Vector3[VertexCount];
for (int i = 0; i < VertexCount; i++)
{
_Vertices[i] = new Vector3(CompressionBounds.Decompress(BitConverter.ToInt16(Bytes, Index + 0), boundingBox.X),
CompressionBounds.Decompress(BitConverter.ToInt16(Bytes, Index + 2), boundingBox.Y),
CompressionBounds.Decompress(BitConverter.ToInt16(Bytes, Index + 4), boundingBox.Z));
Index += VertexSize;
}
}
break;
#endregion
#region Texcoords
case ResourceSubType.UVData:
Index = 0;
Bytes = br.ReadBytes(r.RawDataSize);
if ((section.CompressionFlags & Compression.Texcoord) == Compression.Texcoord)
{
int TexcoordSize = 4;
Count = Bytes.Length / TexcoordSize;
Texcoords = new Vector2[Count];
for (int i = 0; i < Count; i++)
{
Texcoords[i] = new Vector2(CompressionBounds.Decompress(BitConverter.ToInt16(Bytes, Index + 0),
boundingBox.U), CompressionBounds.Decompress(BitConverter.ToInt16(Bytes, Index + 2), boundingBox.V));
Index += TexcoordSize;
}
}
else
{
int TexcoordSize = 8;
Count = Bytes.Length / TexcoordSize;
Texcoords = new Vector2[Count];
for (int i = 0; i < Count; i++)
{
float u = BitConverter.ToSingle(Bytes, Index);
float v = BitConverter.ToSingle(Bytes, Index + 4);
Texcoords[i] = new Vector2(u, v);
Index += TexcoordSize;
}
}
break;
#endregion
#region Normals, Tangents, and Bitangents
case ResourceSubType.VectorData:
int[] Ints = new int[r.RawDataSize / 4];
for (int i = 0; i < Ints.Length; i++)
Ints[i] = br.ReadInt32();
Normals = new Vector3[Ints.Length / 3];
Tangents = new Vector3[Ints.Length / 3];
Bitangents = new Vector3[Ints.Length / 3];
int[] normInts = new int[Ints.Length / 3];
for (int i = 0; i < normInts.Length; i++)
{
normInts[i] = Ints[i * 3];
}
int normalsCount = 0;
int tangentsCount = 0;
int bitangentsCount = 0;
for (int i = 0; i < Ints.Length; i++)
{
int CompressedData = Ints[i];
int x10 = (CompressedData & 0x000007FF);
if ((x10 & 0x00000400) == 0x00000400) {
x10 = -((~x10) & 0x000007FF);
if (x10 == 0) x10 = -1;
}
int y11 = (CompressedData >> 11) & 0x000007FF;
if ((y11 & 0x00000400) == 0x00000400)
{
y11 = -((~y11) & 0x000007FF);
if (y11 == 0) y11 = -1;
}
int z11 = (CompressedData >> 22) & 0x000003FF;
if ((z11 & 0x00000200) == 0x00000200)
{
z11 = -((~z11) & 0x000003FF);
if (z11 == 0) z11 = -1;
}
float x, y, z;
x = (x10 / (float)0x000003ff);
y = (y11 / (float)0x000003FF);
z = (z11 / (float)0x000001FF);
int o = 0;
switch (i % 3)
{
case 0:
Normals[normalsCount] = new Vector3(x, y, z);
normalsCount++;
break;
case 1:
Tangents[tangentsCount] = new Vector3(x, y, z);
tangentsCount++;
break;
case 2:
Bitangents[bitangentsCount] = new Vector3(x, y, z);
bitangentsCount++;
break;
}
}
//Normals = GenerateNormals(Vertices, Indices);
break;
#endregion
}
break;
#region Triangle Strip Indices
case ResourceType.TriangleStrip:
Count = r.RawDataSize / 2;
Indices = new short[Count];
for (int x = 0; x < Count; x++)
{
Indices[x] = br.ReadInt16();
}
break;
#endregion
}
}
Vertices = new Vertex[_Vertices.Length];
for (int i = 0; i < Vertices.Length; i++)
{
Vertices[i] = new Vertex(){
Position = _Vertices[i].ToXnaVector3(),
Color = Microsoft.Xna.Framework.Graphics.Color.Gray,
Normal = Normals[i].ToXnaVector3(),
Tangent = Tangents[i].ToXnaVector3(),
Bitangent = Bitangents[i].ToXnaVector3(),
/*Texcoord = Texcoords[i] */
};
}
}
public void ImportWavefrontObject(WavefrontObject Wavefront, CompressionBounds boundingBox)
{
List<D3DVertex> temp = new List<D3DVertex>(Wavefront.FaceCount * 3);
for (int Material = 0; Material < Wavefront.MaterialCount; Material++)
{
int[] FaceIndices = Wavefront.GetFaceIndicesUsingMaterialID(Material);
for (int Face = 0; Face < FaceIndices.Length; Face++)
{
for (int Component = 0; Component < 3; Component++)
{
D3DVertex d3DVertex = new D3DVertex();
d3DVertex.Position = Wavefront.Vertices[Wavefront.Faces[FaceIndices[Face]].VertexIndices[Component]];
d3DVertex.Texture = Wavefront.Texcoords[Wavefront.Faces[FaceIndices[Face]].TexcoordIndices[Component]];
d3DVertex.Normal = Wavefront.Normals[Wavefront.Faces[FaceIndices[Face]].NormalIndices[Component]];
temp.Add(d3DVertex);
}
}
}
//Hashtable D3DVertexHashtable = new Hashtable(Wavefront.FaceCount * 3);
List<short> tempIndices = new List<short>(Wavefront.FaceCount * 3);
List<D3DVertex> D3DVertexList = new List<D3DVertex>(Wavefront.FaceCount * 3);
short IndiceIndex = 0;
for (int Index = 0; Index < temp.Count; Index++)
{
D3DVertex d3DVertex = temp[Index];
if (!D3DVertexList.Contains(d3DVertex))
{
//D3DVertexHashtable.Add(d3DVertex, d3DVertex);
D3DVertexList.Add(d3DVertex);
tempIndices.Add(IndiceIndex);
IndiceIndex++;
}
else
{
tempIndices.Add((short)D3DVertexList.IndexOf(d3DVertex));
}
}
this.Indices = tempIndices.ToArray();
D3DVertex[] D3DVertices = D3DVertexList.ToArray();
RenderDevice Device = new RenderDevice();
Device.InitializeDevice();
Microsoft.DirectX.Direct3D.Mesh mesh = new Microsoft.DirectX.Direct3D.Mesh(Wavefront.FaceCount, D3DVertices.Length, MeshFlags.SystemMemory, D3DVertex.Format, Device.Device);
List<int> newAttributes = new List<int>(Wavefront.FaceCount);
foreach (Face f in Wavefront.Faces)
{
newAttributes.Add(f.MaterialID);
}
mesh.LockAttributeBuffer(LockFlags.None);
mesh.UnlockAttributeBuffer(newAttributes.ToArray());
mesh.SetIndexBufferData(Indices.ToArray(), LockFlags.None);
mesh.SetVertexBufferData(D3DVertices.ToArray(), LockFlags.None);
int[] adj = new int[Wavefront.FaceCount * 3];
mesh.GenerateAdjacency(0.005F, adj);
mesh.OptimizeInPlace(MeshFlags.OptimizeAttributeSort, adj);
IndexBuffer iBuffer = mesh.IndexBuffer;
short[] D3DIndices;
int IndiceCount;
short[][] MaterialFaceIndices = new short[Wavefront.MaterialCount][];
for (int Material = 0; Material < Wavefront.MaterialCount; Material++)
{
iBuffer = Microsoft.DirectX.Direct3D.Mesh.ConvertMeshSubsetToSingleStrip(mesh, Material, MeshFlags.SystemMemory, out IndiceCount);
GraphicsStream graphics = iBuffer.Lock(0, 0, LockFlags.None);
unsafe
{
short* IndiceArray = (short*)graphics.InternalData.ToPointer();
D3DIndices = new short[IndiceCount];
for (int Index = 0; Index < IndiceCount; Index++)
{
D3DIndices[Index] = IndiceArray[Index];
}
}
MaterialFaceIndices[Material] = D3DIndices;
}
List<short> newIndices = new List<short>();
Groups = new Group[MaterialFaceIndices.Length];
for (int i = 0; i < MaterialFaceIndices.Length; i++)
{
Groups[i] = new Group();
Groups[i].IndiceStart = (short)newIndices.Count;
Groups[i].IndiceCount = (short)MaterialFaceIndices[i].Length;
Groups[i].ShaderIndex = (short)i;
newIndices.AddRange(MaterialFaceIndices[i]);
}
this.Indices = newIndices.ToArray();
this._Vertices = new Vector3[D3DVertices.Length];
this.Texcoords = new Vector2[D3DVertices.Length];
this.Normals = new Vector3[D3DVertices.Length];
for (int i = 0; i < D3DVertices.Length; i++)
{
_Vertices[i] = D3DVertices[i].Position;
Texcoords[i] = D3DVertices[i].Texture;
Normals[i] = D3DVertices[i].Normal;
}
CalculateTangentArray(_Vertices.Length, _Vertices, Normals, Texcoords, mesh.NumberFaces, Wavefront.Faces.ToArray(), out Bitangents, out Tangents);
mesh.Dispose();
}
