private static MESH_DATA SerializeMeshGeometry(MESH_FILE file, ShaderDataHelper shaderData, MeshGeometry meshGeometry)
{
var meshData = MESH_DATA.Create(meshGeometry.VertexCount, meshGeometry.IndexCount, file.IsTextured, file.IsFlexible);
var vertIndexer = new ListIndexer <Vertex>(meshGeometry.Vertices);
bool isTextured = meshGeometry.IsTextured;
for (int i = 0; i < meshGeometry.Vertices.Count; i++)
{
var vert = meshGeometry.Vertices[i];
meshData.Positions[i] = vert.Position;
meshData.Normals[i] = vert.Normal;
if (file.IsTextured)
{
meshData.UVs[i] = isTextured ? vert.TexCoord : new Vector2(0f);
}
if (file.IsFlexible && vert.BoneWeights.Any())
{
var boneWeights = vert.BoneWeights.Select(x => new MESH_BONE_WEIGHT {
BoneID = x.BoneID, Weight = x.Weight
});
meshData.Bones[i] = new MESH_BONE_MAPPING(boneWeights);
}
}
for (int i = 0; i < meshGeometry.Indices.Count; i++)
{
var idx = meshGeometry.Indices[i];
meshData.Indices[i].VertexIndex = vertIndexer.IndexOf(idx.Vertex);
meshData.Indices[i].AverageNormalIndex = shaderData.AvgNormals.IndexOf(idx.AverageNormal);
int reIdx = shaderData.RoundEdgeData.IndexOf(idx.RoundEdgeData);
int reOffset = reIdx * 12 + ((int)Math.Floor(reIdx / 21d) * 4);
meshData.Indices[i].REShaderOffset = reOffset;
}
return(meshData);
}
private static MESH_DATA ReadAlternateMesh(BinaryReaderEx br, MESH_FILE mesh, long boneMappingPosition, long meshDataSize)
{
long startPosition = br.Position;
int vertexCount = br.ReadInt32();
int indexCount = br.ReadInt32();
var geom = MESH_DATA.Create(vertexCount, indexCount, mesh.IsTextured, mesh.IsFlexible);
for (int i = 0; i < vertexCount; i++)
{
geom.Positions[i] = new Vector3(br.ReadSingles(3));
}
for (int i = 0; i < vertexCount; i++)
{
geom.Normals[i] = new Vector3(br.ReadSingles(3));
}
if (mesh.IsTextured)
{
for (int i = 0; i < vertexCount; i++)
{
geom.UVs[i] = new Vector2(br.ReadSingles(2));
}
}
for (int i = 0; i < indexCount; i++)
{
geom.Indices[i] = new MESH_INDEX()
{
VertexIndex = br.ReadInt32()
}
}
;
for (int i = 0; i < indexCount; i++)
{
geom.Indices[i].AverageNormalIndex = br.ReadInt32();
}
for (int i = 0; i < indexCount; i++)
{
geom.Indices[i].REShaderOffset = br.ReadInt32();
}
if (mesh.IsFlexible)
{
Trace.WriteLine("WARNING Flexible alternate mesh encountered!");
if (br.Position < startPosition + meshDataSize)
{
var dataOffsets = new List <int>();
for (int i = 0; i < vertexCount; i++)
{
dataOffsets.Add(br.ReadInt32());
}
long dataEndPosition = br.Position;
for (int i = 0; i < vertexCount; i++)
{
geom.Bones[i] = ReadBoneMapping(br, boneMappingPosition, dataOffsets[i]);
}
br.Position = dataEndPosition;
}
else
{
Trace.WriteLine("Flexible alternate mesh does not seem to be supported!");
geom.Bones = new MESH_BONE_MAPPING[0];
}
}
return(geom);
}
public static MESH_FILE ReadMeshFile(Stream stream)
{
stream.Position = 0;
var meshFile = new MESH_FILE();
using (var br = new BinaryReaderEx(stream, Encoding.UTF8, true))
{
var fileHeader = br.ReadStruct <MESH_HEADER>();
if (fileHeader.Header != "10GB")
{
throw new IOException("The file is not a LDD mesh file (*.g)");
}
meshFile.Header = fileHeader;
meshFile.Geometry = MESH_DATA.Create(fileHeader);
// Vertices & triangles
{
for (int i = 0; i < fileHeader.VertexCount; i++)
{
meshFile.Geometry.Positions[i] = new Vector3(br.ReadSingle(), br.ReadSingle(), br.ReadSingle());
}
for (int i = 0; i < fileHeader.VertexCount; i++)
{
meshFile.Geometry.Normals[i] = new Vector3(br.ReadSingle(), br.ReadSingle(), br.ReadSingle());
}
if (fileHeader.MeshType == (int)MeshType.StandardTextured || fileHeader.MeshType == (int)MeshType.FlexibleTextured)
{
for (int i = 0; i < fileHeader.VertexCount; i++)
{
meshFile.Geometry.UVs[i] = new Vector2(br.ReadSingle(), br.ReadSingle());
}
}
for (int i = 0; i < fileHeader.IndexCount; i++)
{
meshFile.Geometry.Indices[i] = new MESH_INDEX {
VertexIndex = br.ReadInt32()
}
}
;
}
// Edge shader data (brick outlines)
{
int shaderDataLength = br.ReadInt32();
int valueCounter = 0;
var shaderData = new List <ROUNDEDGE_SHADER_DATA>();
while (valueCounter < shaderDataLength)
{
bool endOfRow = 256 - ((valueCounter + 12) % 256) < 12;
int valueCount = endOfRow ? 16 : 12;
int remainingData = shaderDataLength - valueCounter;
if (valueCount > remainingData)
{
if (endOfRow && 12 <= remainingData)
{
valueCount = 12;
}
else
{
Trace.WriteLine("Shader data length error!!!");
stream.Skip(remainingData * 4);
break;
}
}
shaderData.Add(new ROUNDEDGE_SHADER_DATA(br.ReadSingles(valueCount)));
valueCounter += valueCount;
}
meshFile.RoundEdgeShaderData = shaderData.ToArray();
for (int i = 0; i < fileHeader.IndexCount; i++)
{
meshFile.Geometry.Indices[i].REShaderOffset = br.ReadInt32();
}
}
// Average Normals
{
int averageNormalsCount = br.ReadInt32();
//we skip the first item because it looks like an header and the maximum referenced value seems always one less the specified length
var dataHeader = new Vector3(br.ReadSingles(3));
if (dataHeader.X != 83 || dataHeader.Y != 0 || dataHeader.Z != 0)
{
Trace.WriteLine($"Unexpected average normal header: {dataHeader}");
}
meshFile.AverageNormals = new Vector3[averageNormalsCount - 1];
for (int i = 0; i < averageNormalsCount - 1; i++)
{
meshFile.AverageNormals[i] = new Vector3(br.ReadSingles(3));
}
for (int i = 0; i < fileHeader.IndexCount; i++)
{
meshFile.Geometry.Indices[i].AverageNormalIndex = br.ReadInt32();
}
}
long boneMappingPosition = 0;
// Flex data
if (fileHeader.MeshType == (int)MeshType.Flexible || fileHeader.MeshType == (int)MeshType.FlexibleTextured)
{
int dataSize = br.ReadInt32();
boneMappingPosition = stream.Position;
stream.Seek(dataSize, SeekOrigin.Current); //skip over the data
var dataOffsets = new List <int>();
for (int i = 0; i < fileHeader.VertexCount; i++)
{
dataOffsets.Add(br.ReadInt32());
}
long dataEndPosition = stream.Position;
for (int i = 0; i < fileHeader.VertexCount; i++)
{
meshFile.Geometry.Bones[i] = ReadBoneMapping(br, boneMappingPosition, dataOffsets[i]);
}
stream.Position = dataEndPosition;
}
int cullingInfoCount = br.ReadInt32();
int cullingInfoSize = br.ReadInt32();
meshFile.Cullings = new MESH_CULLING[cullingInfoCount];
for (int i = 0; i < cullingInfoCount; i++)
{
meshFile.Cullings[i] = ReadCullingInfo(br, meshFile, boneMappingPosition);
}
}
return(meshFile);
}