public void DumpToOBJ(string file_name)
{
using (FileStream strm = new FileStream(file_name, FileMode.Create))
{
EndianBinaryWriter writer = new EndianBinaryWriter(strm, Endian.Big);
List <Vector3> master_list = new List <Vector3>();
for (int i = 0; i < m_Meshes.Count; i++)
{
Mesh cur_mesh = m_Meshes[i];
for (int j = 0; j < cur_mesh.VertexData.Position.Count; j++)
{
if (!master_list.Contains(cur_mesh.VertexData.Position[j]))
{
master_list.Add(cur_mesh.VertexData.Position[j]);
}
}
}
for (int i = 0; i < master_list.Count; i++)
{
writer.Write($"v { master_list[i].X } { master_list[i].Y } { master_list[i].Z }\n".ToCharArray());
writer.Flush();
}
for (int i = 0; i < m_Meshes.Count; i++)
{
writer.Write($"o { m_Meshes[i].Name }\n".ToCharArray());
for (int j = 0; j < m_Meshes[i].Vertices.Count; j += 3)
{
MeshVertexIndex index_1 = m_Meshes[i].Vertices[j];
MeshVertexIndex index_2 = m_Meshes[i].Vertices[j + 1];
MeshVertexIndex index_3 = m_Meshes[i].Vertices[j + 2];
if (index_1.Position >= m_Meshes[i].VertexData.Position.Count)
{
continue;
}
if (index_2.Position >= m_Meshes[i].VertexData.Position.Count)
{
continue;
}
if (index_3.Position >= m_Meshes[i].VertexData.Position.Count)
{
continue;
}
Vector3 vec_1 = m_Meshes[i].VertexData.Position[index_1.Position];
Vector3 vec_2 = m_Meshes[i].VertexData.Position[index_2.Position];
Vector3 vec_3 = m_Meshes[i].VertexData.Position[index_3.Position];
writer.Write($"f { master_list.IndexOf(vec_1) + 1 } { master_list.IndexOf(vec_2) + 1 } { master_list.IndexOf(vec_3) + 1 }\n".ToCharArray());
writer.Flush();
}
}
}
}
private List <MeshVertexIndex> ConvertTopologyToTriangles(int fromType, List <MeshVertexIndex> indexes)
{
List <MeshVertexIndex> sortedIndexes = new List <MeshVertexIndex>();
if (fromType == 4)
{
for (int v = 2; v < indexes.Count; v++)
{
bool isEven = v % 2 != 0;
MeshVertexIndex[] newTri = new MeshVertexIndex[3];
newTri[0] = indexes[v - 2];
newTri[1] = isEven ? indexes[v] : indexes[v - 1];
newTri[2] = isEven ? indexes[v - 1] : indexes[v];
// Check against degenerate triangles (a triangle which shares indexes)
if (newTri[0] != newTri[1] && newTri[1] != newTri[2] && newTri[2] != newTri[0])
{
sortedIndexes.AddRange(newTri);
}
else
{
System.Console.WriteLine("Degenerate triangle detected, skipping TriangleStrip conversion to triangle.");
}
}
}
else if (fromType == 1)
{
for (int v = 1; v < indexes.Count - 1; v++)
{
// Triangle is always, v, v+1, and index[0]?
MeshVertexIndex[] newTri = new MeshVertexIndex[3];
newTri[0] = indexes[v];
newTri[1] = indexes[v + 1];
newTri[2] = indexes[0];
// Check against degenerate triangles (a triangle which shares indexes)
if (newTri[0] != newTri[1] && newTri[1] != newTri[2] && newTri[2] != newTri[0])
{
sortedIndexes.AddRange(newTri);
}
else
{
System.Console.WriteLine("Degenerate triangle detected, skipping TriangleFan conversion to triangle.");
}
}
}
else if (fromType == 2)
{
// The good news is, Triangles just go straight though!
sortedIndexes.AddRange(indexes);
}
else if (fromType == 3)
{
}
else
{
System.Console.WriteLine("Unsupported GXPrimitiveType: {0} in conversion to Triangle List.", fromType);
}
return(sortedIndexes);
}
private void ReadPrimitiveData(EndianBinaryReader reader, EndianBinaryReader string_table)
{
reader.Skip(0x38);
int prim_offset = reader.ReadInt32();
int prim_count = reader.ReadInt32();
int data_base_offset = prim_offset + (prim_count * 12);
reader.BaseStream.Seek(prim_offset, SeekOrigin.Begin);
for (int i = 0; i < prim_count; i++)
{
int name_offset = reader.ReadInt32();
int vec_count = reader.ReadInt32();
int data_offset = reader.ReadInt32();
string_table.BaseStream.Seek(name_offset, SeekOrigin.Begin);
string mesh_name = string_table.ReadStringUntil('\0');
Mesh mesh = m_Meshes.Find(x => x.Name == mesh_name);
long cur_pos = reader.BaseStream.Position;
reader.BaseStream.Seek(data_base_offset + data_offset, SeekOrigin.Begin);
for (int v = 0; v < vec_count; v++)
{
ushort unk_1 = reader.ReadUInt16();
byte unk_a = reader.ReadByte();
byte unk_2 = reader.ReadByte();
List <MeshVertexIndex> vert_indices = new List <MeshVertexIndex>();
for (int a = 0; a < 3; a++)
{
MeshVertexIndex index = new MeshVertexIndex();
index.Position = reader.ReadInt16();
index.Normal = reader.ReadInt16();
index.Color0 = reader.ReadInt16();
index.Tex0 = reader.ReadInt16();
vert_indices.Add(index);
}
// quad
if (unk_1 == 3)
{
MeshVertexIndex index = new MeshVertexIndex();
index.Position = reader.ReadInt16();
index.Normal = reader.ReadInt16();
index.Color0 = reader.ReadInt16();
index.Tex0 = reader.ReadInt16();
vert_indices.Add(index);
mesh.Vertices.AddRange(new MeshVertexIndex[] { vert_indices[0], vert_indices[1], vert_indices[2] });
mesh.Vertices.AddRange(new MeshVertexIndex[] { vert_indices[1], vert_indices[3], vert_indices[2] });
}
else if (unk_1 == 2)
{
mesh.Vertices.AddRange(new MeshVertexIndex[] { vert_indices[0], vert_indices[1], vert_indices[2] });
reader.SkipInt32();
reader.SkipInt32();
}
// tristrip
else if (unk_1 == 4)
{
int tri_count = reader.ReadInt32();
int unk_value = reader.ReadInt32();
List <MeshVertexIndex> strip = new List <MeshVertexIndex>();
strip.AddRange(new MeshVertexIndex[] { vert_indices[0], vert_indices[1], vert_indices[2] });
for (int t = 0; t < tri_count - 1; t++)
{
MeshVertexIndex orig = strip[strip.Count - 2];
MeshVertexIndex new_vert = new MeshVertexIndex();
new_vert.Position = orig.Position + 3;
strip.Add(new_vert);
}
//mesh.Vertices.AddRange(ConvertTopologyToTriangles(4, strip).ToArray());
}
Vector3 unk_3 = new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
}
reader.BaseStream.Seek(cur_pos, SeekOrigin.Begin);
}
reader.BaseStream.Seek(8, SeekOrigin.Begin);
}
