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Attempting to read v4 meshes 

Not backwards compatible yet, but I want to stash this for later.
This commit is contained in:
CloneTrooper1019 2020-06-03 22:46:06 -05:00
parent 7ae0fc051d
commit c620938a29
4 changed files with 185 additions and 47 deletions
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3
Bevels/BevelGenerator.csproj
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@ -51,8 +51,7 @@
<ItemGroup>
<Compile Include="Extensions\Formatting.cs" />
<Compile Include="Extensions\RegistryHelper.cs" />
<Compile Include="Geometry\Mesh.cs" />
<Compile Include="Geometry\Vertex.cs" />
<Compile Include="Mesh.cs" />
<Compile Include="Program.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
<Compile Include="Properties\Resources.Designer.cs">

15
Bevels/Geometry/Vertex.cs
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@ -1,15 +0,0 @@
using System.Drawing;
using RobloxFiles.DataTypes;
namespace BevelGenerator
{
public class Vertex
{
public Vector3 Position;
public Vector3 Normal;
public Vector3 UV;
public bool HasColor = false;
public Color Color;
}
}

209
Bevels/Geometry/Mesh.cs → Bevels/Mesh.cs
View File

@ -1,5 +1,6 @@
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
@ -10,19 +11,73 @@ using RobloxFiles.DataTypes;
namespace BevelGenerator
{
public class Bone
{
public string Name;
public int NameIndex;
public short Id;
public short Parent;
public float Angle;
public CFrame CFrame;
public override string ToString()
{
return $"[Bone: {Name}]";
}
}
public class Vertex
{
public Vector3 Position;
public Vector3 Normal;
public Vector3 UV;
public Color? Color;
public BoneWeights? Weights;
}
public class ParentLink
{
public int[] UnknownA;
public short[] UnknownB;
}
public struct BoneWeights
{
public byte[] Bones;
public byte[] Weights;
public override string ToString()
{
return $"[Bones: {{{string.Join(", ", Bones)}}} | Weights: {{{string.Join(", ", Weights)}}}]";
}
}
public class Mesh
{
public int Version;
public ushort NumMeshes = 0;
public int NumVerts = 0;
public List<Vertex> Verts;
public int NumFaces = 0;
public List<int[]> Faces;
public ushort NumLODs = 0;
public ushort NumLODs;
public List<int> LODs;
public int NumBones = 0;
public List<Bone> Bones;
public int NumLinks = 0;
public List<ParentLink> Links;
public int NameTableSize = 0;
public byte[] NameTable;
private static Vector3 ReadVector3(BinaryReader reader)
{
float x = reader.ReadSingle(),
@ -106,25 +161,27 @@ namespace BevelGenerator
private static void LoadGeometry_Binary(BinaryReader reader, Mesh mesh)
{
byte[] binVersion = reader.ReadBytes(13);
var headerSize = reader.ReadUInt16();
byte[] binVersion = reader.ReadBytes(13); // version x.xx\n
var vertSize = reader.ReadByte();
var faceSize = reader.ReadByte();
if (mesh.Version >= 3)
{
var lodRangeSize = reader.ReadUInt16();
mesh.NumLODs = reader.ReadUInt16();
}
var headerSize = reader.ReadUInt16();
mesh.NumMeshes = reader.ReadUInt16();
mesh.NumVerts = reader.ReadInt32();
mesh.NumFaces = reader.ReadInt32();
mesh.NumLODs = reader.ReadUInt16();
mesh.NumBones = reader.ReadUInt16();
mesh.NameTableSize = reader.ReadInt32();
mesh.NumLinks = reader.ReadInt32();
mesh.LODs = new List<int>();
mesh.Bones = new List<Bone>();
mesh.Faces = new List<int[]>();
mesh.Verts = new List<Vertex>();
mesh.Links = new List<ParentLink>();
// Read Vertices
for (int i = 0; i < mesh.NumVerts; i++)
{
var vert = new Vertex()
@ -134,18 +191,31 @@ namespace BevelGenerator
UV = ReadVector3(reader)
};
if (vertSize > 36)
{
int rgba = reader.ReadInt32();
int argb = (rgba << 24 | rgba >> 8);
vert.Color = Color.FromArgb(argb);
vert.HasColor = true;
}
int rgba = reader.ReadInt32();
int argb = (rgba << 24 | rgba >> 8);
vert.Color = Color.FromArgb(argb);
mesh.Verts.Add(vert);
}
// Read Bone Weights?
var weightSets = new List<BoneWeights>();
for (int i = 0; i < mesh.NumVerts; i++)
{
var vert = mesh.Verts[i];
var weights = new BoneWeights()
{
Bones = reader.ReadBytes(4),
Weights = reader.ReadBytes(4)
};
vert.Weights = weights;
weightSets.Add(weights);
}
// Read Faces
for (int i = 0; i < mesh.NumFaces; i++)
{
int[] face = new int[3];
@ -156,6 +226,7 @@ namespace BevelGenerator
mesh.Faces.Add(face);
}
// Read LOD ranges
if (mesh.NumLODs > 0)
{
for (int i = 0; i < mesh.NumLODs; i++)
@ -165,15 +236,97 @@ namespace BevelGenerator
}
}
// Validate LODs
CheckLOD(mesh);
// Read Bones
for (int i = 0; i < mesh.NumBones; i++)
{
float[] cf = new float[12];
Bone bone = new Bone()
{
NameIndex = reader.ReadInt32(),
Id = reader.ReadInt16(),
Parent = reader.ReadInt16(),
Angle = reader.ReadSingle()
};
for (int m = 0; m < 12; m++)
{
int index = (m + 3) % 12;
cf[index] = reader.ReadSingle();
}
bone.CFrame = new CFrame(cf);
mesh.Bones.Add(bone);
}
// Read Bone Names
var nameTable = reader.ReadBytes(mesh.NameTableSize);
mesh.NameTable = nameTable;
foreach (Bone bone in mesh.Bones)
{
int index = bone.NameIndex;
var buffer = new List<byte>();
while (true)
{
byte next = nameTable[index];
if (next > 0)
index++;
else
break;
buffer.Add(next);
}
var result = buffer.ToArray();
bone.Name = Encoding.UTF8.GetString(result);
}
// Read Skinning Data?
for (int p = 0; p < mesh.NumLinks; p++)
{
var link = new ParentLink();
mesh.Links.Add(link);
byte[] data = reader.ReadBytes(72);
var stream = new MemoryStream(data);
using (var buffer = new BinaryReader(stream))
{
int[] unknownA = new int[4];
for (int i = 0; i < 4; i++)
unknownA[i] = buffer.ReadInt32();
int numUnknownB = buffer.ReadInt32();
short[] unknownB = new short[numUnknownB];
for (int i = 0; i < numUnknownB; i++)
unknownB[i] = buffer.ReadInt16();
link.UnknownA = unknownA;
link.UnknownB = unknownB;
}
}
Debugger.Break();
}
public void AddLOD(Mesh lodMesh)
{
Verts.AddRange(lodMesh.Verts);
Faces.AddRange(lodMesh.Faces
.Select(face => face
Faces.AddRange
(
lodMesh.Faces.Select
(
face => face
.Select(i => i + NumVerts)
.ToArray()
)
@ -227,9 +380,9 @@ namespace BevelGenerator
writer.Write(uv.Y);
writer.Write(uv.Z);
if (vertex.HasColor)
if (vertex.Color.HasValue)
{
var color = vertex.Color;
var color = vertex.Color.Value;
int argb = color.ToArgb();
int rgba = (argb << 8 | argb >> 24);
@ -363,7 +516,7 @@ namespace BevelGenerator
disposeThis = buffer;
}
else if (mesh.Version == 2 || mesh.Version == 3)
else
{
MemoryStream stream = new MemoryStream(data);
@ -372,11 +525,7 @@ namespace BevelGenerator
disposeThis = stream;
}
else
{
throw new Exception($"Unknown .mesh file version: {version}");
}
disposeThis.Dispose();
disposeThis = null;

5
Bevels/Program.cs
View File

@ -266,6 +266,11 @@ namespace BevelGenerator
ProcessObjFile(info);
return;
}
else if (info.Extension == ".bin" || info.Extension == ".mesh")
{
Mesh mesh = Mesh.FromFile(filePath);
Debugger.Break();
}
ProcessModelFile(filePath);
}