internal void Read(EndianBinaryReader reader, ObjectSection section = null)
{
reader.SeekCurrent(4); // Unused flags
BoundingSphere = reader.ReadBoundingSphere();
int subMeshCount = reader.ReadInt32();
long subMeshesOffset = reader.ReadOffset();
var vertexFormat = ( VertexFormatAttributes )reader.ReadUInt32();
int vertexSize = reader.ReadInt32();
int vertexCount = reader.ReadInt32();
var attributeOffsets = reader.ReadOffsets(20);
Flags = ( MeshFlags )reader.ReadInt32();
uint attributeFlags = reader.ReadUInt32();
reader.SkipNulls(6 * sizeof(uint));
Name = reader.ReadString(StringBinaryFormat.FixedLength, 64);
SubMeshes.Capacity = subMeshCount;
for (int i = 0; i < subMeshCount; i++)
{
reader.ReadAtOffset(subMeshesOffset + i * SubMesh.GetByteSize(section?.Format ?? BinaryFormat.DT), () =>
{
var subMesh = new SubMesh();
subMesh.Read(reader, section);
SubMeshes.Add(subMesh);
});
}
// Modern Format
if (section != null)
{
ReadVertexAttributesModern();
}
else
{
ReadVertexAttributesClassic();
}
void ReadVertexAttributesClassic()
{
Vector4[] boneWeights = null;
Vector4[] boneIndices = null;
for (int i = 0; i < attributeOffsets.Length; i++)
{
var attribute = ( VertexFormatAttributes )(1 << i);
reader.ReadAtOffsetIf((vertexFormat & attribute) != 0, attributeOffsets[i], () =>
{
switch (attribute)
{
case VertexFormatAttributes.Position:
Positions = reader.ReadVector3s(vertexCount);
break;
case VertexFormatAttributes.Normal:
Normals = reader.ReadVector3s(vertexCount);
break;
case VertexFormatAttributes.Tangent:
Tangents = reader.ReadVector4s(vertexCount);
break;
case VertexFormatAttributes.TexCoord0:
TexCoords0 = reader.ReadVector2s(vertexCount);
break;
case VertexFormatAttributes.TexCoord1:
TexCoords1 = reader.ReadVector2s(vertexCount);
break;
case VertexFormatAttributes.TexCoord2:
TexCoords2 = reader.ReadVector2s(vertexCount);
break;
case VertexFormatAttributes.TexCoord3:
TexCoords3 = reader.ReadVector2s(vertexCount);
break;
case VertexFormatAttributes.Color0:
Colors0 = reader.ReadColors(vertexCount);
break;
case VertexFormatAttributes.Color1:
Colors1 = reader.ReadColors(vertexCount);
break;
case VertexFormatAttributes.BoneWeight:
boneWeights = reader.ReadVector4s(vertexCount);
break;
case VertexFormatAttributes.BoneIndex:
boneIndices = reader.ReadVector4s(vertexCount);
break;
default:
Console.WriteLine("Unhandled vertex format element: {0}", attribute);
break;
}
});
}
if (boneWeights == null || boneIndices == null)
{
return;
}
BoneWeights = new BoneWeight[vertexCount];
for (int i = 0; i < vertexCount; i++)
{
var weight4 = boneWeights[i];
var index4 = Vector4.Divide(boneIndices[i], 3);
var boneWeight = new BoneWeight
{
Weight1 = weight4.X,
Weight2 = weight4.Y,
Weight3 = weight4.Z,
Weight4 = weight4.W,
Index1 = ( int )index4.X,
Index2 = ( int )index4.Y,
Index3 = ( int )index4.Z,
Index4 = ( int )index4.W
};
boneWeight.Validate();
BoneWeights[i] = boneWeight;
}
}
void ReadVertexAttributesModern()
{
if (attributeFlags == 2 || attributeFlags == 4)
{
Positions = new Vector3[vertexCount];
Normals = new Vector3[vertexCount];
Tangents = new Vector4[vertexCount];
TexCoords0 = new Vector2[vertexCount];
TexCoords1 = new Vector2[vertexCount];
Colors0 = new Color[vertexCount];
if (attributeFlags == 4)
{
BoneWeights = new BoneWeight[vertexCount];
}
bool hasTangents = false;
bool hasTexCoord1 = false;
bool hasColors = false;
var vertexReader = section.VertexData.Reader;
for (int i = 0; i < vertexCount; i++)
{
vertexReader.SeekBegin(section.VertexData.DataOffset + attributeOffsets[13] + vertexSize * i);
Positions[i] = vertexReader.ReadVector3();
Normals[i] = vertexReader.ReadVector3(VectorBinaryFormat.Int16);
vertexReader.SeekCurrent(2);
Tangents[i] = vertexReader.ReadVector4(VectorBinaryFormat.Int16);
TexCoords0[i] = vertexReader.ReadVector2(VectorBinaryFormat.Half);
TexCoords1[i] = vertexReader.ReadVector2(VectorBinaryFormat.Half);
Colors0[i] = vertexReader.ReadColor(VectorBinaryFormat.Half);
if (attributeFlags == 4)
{
var boneWeight = new BoneWeight
{
Weight1 = vertexReader.ReadUInt16() / 32767f,
Weight2 = vertexReader.ReadUInt16() / 32767f,
Weight3 = vertexReader.ReadUInt16() / 32767f,
Weight4 = vertexReader.ReadUInt16() / 32767f,
Index1 = vertexReader.ReadByte() / 3,
Index2 = vertexReader.ReadByte() / 3,
Index3 = vertexReader.ReadByte() / 3,
Index4 = vertexReader.ReadByte() / 3
};
boneWeight.Validate();
BoneWeights[i] = boneWeight;
}
// Normalize normal because precision
Normals[i] = Vector3.Normalize(Normals[i]);
// Checks to get rid of useless data after reading
if (Tangents[i] != Vector4.Zero)
{
hasTangents = true;
}
if (TexCoords0[i] != TexCoords1[i])
{
hasTexCoord1 = true;
}
if (!Colors0[i].Equals(Color.White))
{
hasColors = true;
}
}
if (!hasTangents)
{
Tangents = null;
}
if (!hasTexCoord1)
{
TexCoords1 = null;
}
if (!hasColors)
{
Colors0 = null;
}
}
if (Tangents == null)
{
return;
}
for (int i = 0; i < Tangents.Length; i++)
{
int direction = Math.Sign(Tangents[i].W);
var tangent = Vector3.Normalize(new Vector3(Tangents[i].X, Tangents[i].Y, Tangents[i].Z));
Tangents[i] = new Vector4(tangent, direction);
}
}
}
internal void Read(EndianBinaryReader reader, ObjectSection section = null)
{
reader.SeekCurrent(4);
BoundingSphere = reader.ReadBoundingSphere();
int subMeshCount = reader.ReadInt32();
long subMeshesOffset = reader.ReadOffset();
var attributes = ( VertexFormatAttribute )reader.ReadUInt32();
int stride = reader.ReadInt32();
int vertexCount = reader.ReadInt32();
var elemItems = reader.ReadUInt32s(section?.Format == BinaryFormat.X ? 49 : 28);
Name = reader.ReadString(StringBinaryFormat.FixedLength, 64);
SubMeshes.Capacity = subMeshCount;
for (int i = 0; i < subMeshCount; i++)
{
reader.ReadAtOffset(subMeshesOffset + i * SubMesh.GetByteSize(section?.Format ?? BinaryFormat.DT), () =>
{
var subMesh = new SubMesh();
subMesh.Read(reader, section);
SubMeshes.Add(subMesh);
});
}
// Modern Format
if (section != null)
{
ReadVertexAttributesModern();
}
else
{
ReadVertexAttributesClassic();
}
void ReadVertexAttributesClassic()
{
Vector4[] boneWeights = null;
Vector4[] boneIndices = null;
for (int i = 0; i < 28; i++)
{
var attribute = ( VertexFormatAttribute )(1 << i);
reader.ReadAtOffsetIf((attributes & attribute) != 0, elemItems[i], () =>
{
switch (attribute)
{
case VertexFormatAttribute.Vertex:
Vertices = reader.ReadVector3s(vertexCount);
break;
case VertexFormatAttribute.Normal:
Normals = reader.ReadVector3s(vertexCount);
break;
case VertexFormatAttribute.Tangent:
Tangents = reader.ReadVector4s(vertexCount);
break;
case VertexFormatAttribute.UVChannel1:
UVChannel1 = reader.ReadVector2s(vertexCount);
break;
case VertexFormatAttribute.UVChannel2:
UVChannel2 = reader.ReadVector2s(vertexCount);
break;
case VertexFormatAttribute.Color:
Colors = reader.ReadColors(vertexCount);
break;
case VertexFormatAttribute.BoneWeight:
boneWeights = reader.ReadVector4s(vertexCount);
break;
case VertexFormatAttribute.BoneIndex:
boneIndices = reader.ReadVector4s(vertexCount);
break;
default:
Console.WriteLine("Unhandled vertex format element: {0}", attribute);
break;
}
});
}
if (boneWeights != null && boneIndices != null)
{
BoneWeights = new BoneWeight[vertexCount];
for (int i = 0; i < vertexCount; i++)
{
Vector4 weight4 = boneWeights[i];
Vector4 index4 = Vector4.Divide(boneIndices[i], 3);
var boneWeight = new BoneWeight
{
Weight1 = weight4.X,
Weight2 = weight4.Y,
Weight3 = weight4.Z,
Weight4 = weight4.W,
Index1 = ( int )index4.X,
Index2 = ( int )index4.Y,
Index3 = ( int )index4.Z,
Index4 = ( int )index4.W,
};
boneWeight.Validate();
BoneWeights[i] = boneWeight;
}
}
}
void ReadVertexAttributesModern()
{
uint dataOffset = elemItems[section.Format == BinaryFormat.X ? 27 : 13];
uint attributeFlags = elemItems[section.Format == BinaryFormat.X ? 42 : 21];
if (attributeFlags == 2 || attributeFlags == 4)
{
Vertices = new Vector3[vertexCount];
Normals = new Vector3[vertexCount];
Tangents = new Vector4[vertexCount];
UVChannel1 = new Vector2[vertexCount];
UVChannel2 = new Vector2[vertexCount];
Colors = new Color[vertexCount];
if (attributeFlags == 4)
{
BoneWeights = new BoneWeight[vertexCount];
}
bool hasTangents = false;
bool hasUVChannel2 = false;
bool hasColors = false;
var vertexReader = section.VertexData.Reader;
for (int i = 0; i < vertexCount; i++)
{
vertexReader.SeekBegin(section.VertexData.DataOffset + dataOffset + stride * i);
Vertices[i] = vertexReader.ReadVector3();
Normals[i] = vertexReader.ReadVector3(VectorBinaryFormat.Int16);
vertexReader.SeekCurrent(2);
Tangents[i] = vertexReader.ReadVector4(VectorBinaryFormat.Int16);
UVChannel1[i] = vertexReader.ReadVector2(VectorBinaryFormat.Half);
UVChannel2[i] = vertexReader.ReadVector2(VectorBinaryFormat.Half);
Colors[i] = vertexReader.ReadColor(VectorBinaryFormat.Half);
if (attributeFlags == 4)
{
var boneWeight = new BoneWeight
{
Weight1 = vertexReader.ReadUInt16() / 32768f,
Weight2 = vertexReader.ReadUInt16() / 32768f,
Weight3 = vertexReader.ReadUInt16() / 32768f,
Weight4 = vertexReader.ReadUInt16() / 32768f,
Index1 = vertexReader.ReadByte() / 3,
Index2 = vertexReader.ReadByte() / 3,
Index3 = vertexReader.ReadByte() / 3,
Index4 = vertexReader.ReadByte() / 3,
};
boneWeight.Validate();
BoneWeights[i] = boneWeight;
}
// Normalize normal because precision
Normals[i] = Vector3.Normalize(Normals[i]);
// Checks to get rid of useless data after reading
if (Tangents[i] != Vector4.Zero)
{
hasTangents = true;
}
if (UVChannel1[i] != UVChannel2[i])
{
hasUVChannel2 = true;
}
if (!Colors[i].Equals(Color.White))
{
hasColors = true;
}
}
if (!hasTangents)
{
Tangents = null;
}
if (!hasUVChannel2)
{
UVChannel2 = null;
}
if (!hasColors)
{
Colors = null;
}
}
if (Tangents != null)
{
for (int i = 0; i < Tangents.Length; i++)
{
int direction = Math.Sign(Tangents[i].W);
Vector3 tangent = Vector3.Normalize(new Vector3(Tangents[i].X, Tangents[i].Y, Tangents[i].Z));
Tangents[i] = new Vector4(tangent, direction);
}
}
}
}
