public static ValveTriangleFile FromProvider(string path, StudioModelFile mdl, ValveVertexFile vvd, params IResourceProvider[] providers)
{
var provider = providers.FirstOrDefault(x => x.ContainsFile(path));
if (provider == null)
{
return(null);
}
using (var stream = provider.OpenFile(path))
{
return(new ValveTriangleFile(stream, mdl, vvd));
}
}
public ValveTriangleFile(Stream stream, StudioModelFile mdl, ValveVertexFile vvd)
{
var outIndices = new List <int>();
var outVertices = new List <StudioVertex>();
using (var reader = new BinaryReader(stream))
{
var version = reader.ReadInt32();
Debug.Assert(version == 7);
var vertCacheSize = reader.ReadInt32();
var maxBonesPerStrip = reader.ReadUInt16();
var maxBonesPerTri = reader.ReadUInt16();
var maxBonesPerVert = reader.ReadInt32();
var checksum = reader.ReadInt32();
var numLods = NumLods = reader.ReadInt32();
var matReplacementListOffset = reader.ReadInt32();
var origVerts = new StudioVertex[numLods][];
for (var i = 0; i < numLods; ++i)
{
origVerts[i] = new StudioVertex[vvd.GetVertexCount(i)];
vvd.GetVertices(i, origVerts[i]);
}
var numBodyParts = reader.ReadInt32();
var bodyPartOffset = reader.ReadInt32();
var verts = new List <OptimizedVertex>();
var indices = new List <ushort>();
_bodyParts = new BodyPartHeader[numBodyParts];
var modelList = new List <ModelHeader>();
var modelLodList = new List <ModelLodHeader>();
var meshList = new List <MeshData>();
reader.BaseStream.Seek(bodyPartOffset, SeekOrigin.Begin);
LumpReader <BodyPartHeader> .ReadLumpFromStream(reader.BaseStream, numBodyParts, (bodyPartIndex, bodyPart) =>
{
reader.BaseStream.Seek(bodyPart.ModelOffset, SeekOrigin.Current);
bodyPart.ModelOffset = modelList.Count;
LumpReader <ModelHeader> .ReadLumpFromStream(reader.BaseStream, bodyPart.NumModels, (modelIndex, model) =>
{
reader.BaseStream.Seek(model.LodOffset, SeekOrigin.Current);
model.LodOffset = modelLodList.Count;
LumpReader <ModelLodHeader> .ReadLumpFromStream(reader.BaseStream, model.NumLods, (lodIndex, lod) =>
{
// TODO
if (lodIndex > 0)
{
return;
}
reader.BaseStream.Seek(lod.MeshOffset, SeekOrigin.Current);
lod.MeshOffset = meshList.Count;
var lodVerts = origVerts[lodIndex];
var firstLodIndex = outVertices.Count;
var firstLodVertex = outVertices.Count;
LumpReader <MeshHeader> .ReadLumpFromStream(reader.BaseStream, lod.NumMeshes, (meshIndex, mesh) =>
{
var meshData = new MeshData
{
LodIndexOffset = firstLodIndex,
LodVertexOffset = firstLodVertex,
IndexOffset = outIndices.Count,
VertexOffset = outVertices.Count
};
var meshInfo = mdl.GetMesh(bodyPartIndex, modelIndex, meshIndex);
var origVertOffset = meshInfo.VertexOffset;
reader.BaseStream.Seek(mesh.StripGroupHeaderOffset, SeekOrigin.Current);
LumpReader <StripGroupHeader> .ReadLumpFromStream(reader.BaseStream, mesh.NumStripGroups, stripGroup =>
{
verts.Clear();
indices.Clear();
var start = reader.BaseStream.Position;
reader.BaseStream.Seek(start + stripGroup.VertOffset, SeekOrigin.Begin);
LumpReader <OptimizedVertex> .ReadLumpFromStream(reader.BaseStream,
stripGroup.NumVerts, verts);
var meshIndexOffset = outVertices.Count - firstLodVertex;
for (var i = 0; i < verts.Count; ++i)
{
var vertIndex = origVertOffset + verts[i].OrigMeshVertId;
if (vertIndex < 0 || vertIndex >= lodVerts.Length)
{
throw new IndexOutOfRangeException();
}
outVertices.Add(lodVerts[vertIndex]);
}
reader.BaseStream.Seek(start + stripGroup.IndexOffset, SeekOrigin.Begin);
LumpReader <ushort> .ReadLumpFromStream(reader.BaseStream,
stripGroup.NumIndices, indices);
reader.BaseStream.Seek(start + stripGroup.StripOffset, SeekOrigin.Begin);
LumpReader <StripHeader> .ReadLumpFromStream(reader.BaseStream, stripGroup.NumStrips, strip =>
{
Debug.Assert(strip.Flags != StripHeaderFlags.IsTriStrip);
for (var i = 0; i < strip.NumIndices; ++i)
{
outIndices.Add(meshIndexOffset + indices[strip.IndexOffset + i]);
}
});
});
meshData.IndexCount = outIndices.Count - meshData.IndexOffset;
meshData.VertexCount = outVertices.Count - meshData.VertexOffset;
meshList.Add(meshData);
});
modelLodList.Add(lod);
});
modelList.Add(model);
});
_bodyParts[bodyPartIndex] = bodyPart;
});
_models = modelList.ToArray();
_modelLods = modelLodList.ToArray();
_meshes = meshList.ToArray();
_indices = outIndices.ToArray();
_vertices = outVertices.ToArray();
}
}