public override void Export(Stream writeStream)
{
bool largeSize = IsLargerSize;
bool swapYz = IsYAxisUp;
#if NET40
var memStream = new MemoryStream();
using (var stream = new StreamWriter(writeStream, Encoding.UTF8))
#else
using (var stream = new StreamWriter(writeStream, Encoding.UTF8, 4096, true))
#endif
{
stream.Write("# Exported by TpacTool.IO\n\n");
stream.Write("s ");
stream.Write(Model.Name);
stream.Write('\n');
var meshes = Model.Meshes.FindAll(mesh => mesh.Lod == 0);
var definedMats = new HashSet <Material>();
foreach (var mesh in meshes)
{
if (mesh.Material.TryGetItem(out var mat))
{
if (!definedMats.Contains(mat))
{
WriteMaterial(stream, mat);
definedMats.Add(mat);
}
}
}
int offsetPos = 1, offsetNormal = 1;
foreach (var mesh in meshes)
{
if (mesh.Material.TryGetItem(out var mat))
{
stream.Write("usemtl ");
stream.Write(mat.Name);
stream.Write('\n');
}
MeshEditData med = mesh.EditData != null ? mesh.EditData.Data : null;
if (med != null)
{
int[] posPointer = new int[mesh.VertexCount];
foreach (var position in med.Positions)
{
float x, y, z;
switch (largeSize)
{
default:
switch (swapYz)
{
default:
x = position.X;
y = position.Y;
z = position.Z;
break;
case true:
x = position.X;
y = position.Z;
z = -position.Y;
break;
}
break;
case true:
switch (swapYz)
{
default:
x = position.X * ResizeFactor;
y = position.Y * ResizeFactor;
z = position.Z * ResizeFactor;
break;
case true:
x = position.X * ResizeFactor;
y = position.Z * ResizeFactor;
z = -position.Y * ResizeFactor;
break;
}
break;
}
stream.Write("v ");
stream.Write(x);
stream.Write(' ');
stream.Write(y);
stream.Write(' ');
stream.Write(z);
stream.Write('\n');
}
for (var i = 0; i < med.Vertices.Length; i++)
{
float x, y, z;
var vertex = med.Vertices[i];
switch (swapYz)
{
default:
x = vertex.Normal.X;
y = vertex.Normal.Y;
z = vertex.Normal.Z;
break;
case true:
x = vertex.Normal.X;
y = vertex.Normal.Z;
z = -vertex.Normal.Y;
break;
}
posPointer[i] = (int)vertex.PositionIndex;
stream.Write("vn ");
stream.Write(x);
stream.Write(' ');
stream.Write(y);
stream.Write(' ');
stream.Write(z);
stream.Write('\n');
stream.Write("vt ");
stream.Write(vertex.Uv.X);
stream.Write(' ');
stream.Write(vertex.Uv.Y);
stream.Write('\n');
}
foreach (var face in med.Faces)
{
stream.Write("f");
for (int i = 0; i < 3; i++)
{
int index = face[i];
int posIndex = posPointer[index] + offsetPos;
int normalIndex = index + offsetNormal;
stream.Write(' ');
stream.Write(posIndex);
stream.Write('/');
stream.Write(normalIndex);
stream.Write('/');
stream.Write(normalIndex);
}
stream.Write('\n');
}
}
else
{
// TODO: use vertex data stream
throw new Exception("Cannot find the edit data of " + mesh.Name);
}
offsetPos += mesh.PositionCount;
offsetNormal += mesh.VertexCount;
}
#if NET40
memStream.WriteTo(writeStream);
#endif
}
}
public override void Export(Stream writeStream)
{
bool largeSize = IsLargerSize;
bool isNegYForward = IsNegYAxisForward;
bool isYUp = IsYAxisUp;
var negYMatrix = NegYMatrix;
var yUpMatrix = Matrix4x4.CreateRotationX((float)(Math.PI / -2));
#if NET40
var memStream = new MemoryStream();
using (var stream = new StreamWriter(writeStream, Encoding.UTF8))
#else
using (var stream = new StreamWriter(writeStream, Encoding.UTF8, 4096, true))
#endif
{
stream.Write("# Exported by TpacTool.IO\n\n");
stream.Write("s ");
stream.Write(Model.Name);
stream.Write('\n');
var meshes = Model.Meshes.FindAll(mesh => mesh.Lod == 0);
var definedMats = new HashSet <Material>();
foreach (var mesh in meshes)
{
if (mesh.Material.TryGetItem(out var mat))
{
if (!definedMats.Contains(mat))
{
WriteMaterial(stream, mat);
definedMats.Add(mat);
}
}
}
int offsetPos = 1, offsetNormal = 1;
foreach (var mesh in meshes)
{
if (mesh.Material.TryGetItem(out var mat))
{
stream.Write("usemtl ");
stream.Write(mat.Name);
stream.Write('\n');
}
MeshEditData med = mesh.EditData != null ? mesh.EditData.Data : null;
if (med != null)
{
int[] posPointer = new int[mesh.VertexCount];
foreach (var position in med.Positions)
{
var vec = position;
if (isNegYForward)
{
vec = Vector4.Transform(vec, negYMatrix);
}
if (isYUp)
{
vec = Vector4.Transform(vec, yUpMatrix);
}
if (largeSize)
{
vec = Vector4.Multiply(vec, ResizeFactor);
}
stream.Write("v ");
stream.Write(vec.X);
stream.Write(' ');
stream.Write(vec.Y);
stream.Write(' ');
stream.Write(vec.Z);
stream.Write('\n');
}
for (var i = 0; i < med.Vertices.Length; i++)
{
var vertex = med.Vertices[i];
var vec = vertex.Normal;
if (isNegYForward)
{
vec = Vector4.Transform(vec, negYMatrix);
}
if (isYUp)
{
vec = Vector4.Transform(vec, yUpMatrix);
}
posPointer[i] = (int)vertex.PositionIndex;
stream.Write("vn ");
stream.Write(vec.X);
stream.Write(' ');
stream.Write(vec.Y);
stream.Write(' ');
stream.Write(vec.Z);
stream.Write('\n');
stream.Write("vt ");
stream.Write(vertex.Uv.X);
stream.Write(' ');
stream.Write(vertex.Uv.Y);
stream.Write('\n');
}
foreach (var face in med.Faces)
{
stream.Write("f");
for (int i = 0; i < 3; i++)
{
int index = face[i];
int posIndex = posPointer[index] + offsetPos;
int normalIndex = index + offsetNormal;
stream.Write(' ');
stream.Write(posIndex);
stream.Write('/');
stream.Write(normalIndex);
stream.Write('/');
stream.Write(normalIndex);
}
stream.Write('\n');
}
}
else
{
// TODO: use vertex data stream
throw new Exception("Cannot find the edit data of " + mesh.Name);
}
offsetPos += mesh.PositionCount;
offsetNormal += mesh.VertexCount;
}
#if NET40
memStream.WriteTo(writeStream);
#endif
}
}
