internal BlendFile(BlenderFile file)
{
Version = file.VersionNumber;
PopulatedStructure fileGlobal = file.GetStructuresOfType("FileGlobal")[0];
Filename = new string(fileGlobal["filename"].GetValueAsCharArray()).Split('\0')[0];
Revision = fileGlobal["revision"].GetValueAsInt();
ulong curSceneAddr = fileGlobal["curscene"].GetValueAsPointer();
PopulatedStructure[] scenes = file.GetStructuresOfType("Scene");
int i = 0;
Scenes = new Scene[scenes.Length];
foreach (PopulatedStructure scene in scenes)
{
if (scene.ContainingBlock.OldMemoryAddress == curSceneAddr)
{
currentSceneIndex = i;
}
Scenes[i++] = new Scene(file, scene);
}
}
private void loadModelData(BlenderFile file)
{
models = new List <BlenderModel>();
transparentModels = new List <BlenderModel>();
currentLayer = 1;
Structure curscene = file.GetStructuresOfType("FileGlobal")[0]["curscene"].Dereference()[0];
ulong next = curscene["base.first"].Value;
while (next != 0)
{
Structure objBase = file.GetStructuresByAddress(next)[0];
Structure obj = objBase["object"].Dereference()[0];
IField data = obj["data"];
int SDNAIndex = file.GetBlockByAddress((data as Field <ulong>).Value).SDNAIndex;
while (file.StructureDNA.StructureList[SDNAIndex].StructureTypeName != "Mesh")
{
ulong nextPointer = (objBase["next"] as Field <ulong>).Value;
if (nextPointer == 0)
{
return; // we've run out of objects in the list, and haven't found any meshes
}
objBase = file.GetStructuresByAddress(nextPointer)[0];
obj = objBase["object"].Dereference()[0];
data = obj["data"];
SDNAIndex = file.GetBlockByAddress((data as Field <ulong>).Value).SDNAIndex;
}
Structure mesh = data.Dereference()[0];
BlenderModel model = new BlenderModel(mesh, obj, GraphicsDevice, file);
if (model.TextureHasTransparency)
{
transparentModels.Add(model);
}
else
{
models.Add(model);
}
next = (objBase["next"] as Field <ulong>).Value;
}
}
private VertexPositionNormalTexture[] loadOldModel(BlenderFile file, PopulatedStructure mesh, List <Vector3> verts, List <Vector3> normals, out BasicMaterialContent bmc)
{
// I believe this function has a bug when used on a mesh that has unconnected chunks of vertices;
// however the only file I currently have that exhibits this problem decompresses to 240MB when I use the HTML
// renderer tool, so I can't feasibly poke through the data to see what's going wrong.
List <VertexPositionNormalTexture> output = new List <VertexPositionNormalTexture>();
bmc = new BasicMaterialContent();
List <int[]> faces = new List <int[]>();
List <float[, ]> tFaces = new List <float[, ]>();
foreach (PopulatedStructure s in file.GetStructuresByAddress(mesh["mface"].GetValueAsPointer()))
{
faces.Add(new[] { s["v1"].GetValueAsInt(), s["v2"].GetValueAsInt(), s["v3"].GetValueAsInt(), s["v4"].GetValueAsInt() });
}
foreach (PopulatedStructure s in file.GetStructuresByAddress(mesh["mtface"].GetValueAsPointer()))
{
tFaces.Add((float[, ])s["uv"].GetValueAsMultidimensionalArray());
}
// assume all faces use same texture
PopulatedStructure image = file.GetStructuresByAddress(file.GetStructuresByAddress(mesh["mtface"].GetValueAsPointer())[0]["tpage"].GetValueAsPointer())[0];
if (image["packedfile"].GetValueAsPointer() != 0)
{
byte[] rawImage = file.GetBlockByAddress(file.GetStructuresByAddress(image["packedfile"].GetValueAsPointer())[0]["data"].GetValueAsPointer()).Data;
string filename = Name + "_" + new string(image["id.name"].GetValueAsCharArray()).Split('\0')[0].Substring(2);
using (BinaryWriter s = new BinaryWriter(File.Open(filename, FileMode.Create)))
s.Write(rawImage);
bmc.Texture = new ExternalReference <TextureContent>(filename);
}
else
{
try
{
string texturePath = image["name"].ToString().Split('\0')[0].Replace("/", "\\").Replace("\\\\", "\\");
string filePath = file.GetStructuresOfType("FileGlobal")[0]["filename"].ToString();
filePath = filePath.Substring(0, filePath.LastIndexOf('\\'));
File.Copy((filePath + texturePath).Replace("\'", ""), Name + "_" + new string(image["id.name"].GetValueAsCharArray()).Split('\0')[0].Substring(2));
}
catch
{
//texture = defaultTex;
}
}
int j = 0;
foreach (int[] face in faces)
{
Vector3[] faceVerts = new Vector3[face.Length];
Vector3[] faceVertNormals = new Vector3[face.Length];
Vector2[] faceUVs = new Vector2[face.Length];
for (int i = 0; i < face.Length; i++)
{
faceVerts[i] = verts[face[i]];
faceVertNormals[i] = normals[face[i]];
faceUVs[i] = new Vector2(tFaces[j][i, 0], tFaces[j][i, 1]);
}
j++;
// 2, 1, 0
for (int i = 2; i >= 0; i--)
{
output.Add(new VertexPositionNormalTexture(faceVerts[i], faceVertNormals[i], faceUVs[i]));
}
// 3, 2, 0
for (int i = 3; i >= 1; i--)
{
output.Add(new VertexPositionNormalTexture(faceVerts[i == 1 ? 0 : i], faceVertNormals[i == 1 ? 0 : i], faceUVs[i == 1 ? 0 : i]));
}
}
return(output.ToArray());
}
private VertexPositionNormalTexture[] loadNewModel(BlenderFile file, Structure mesh, List<Vector3> verts, List<Vector3> normals, out Texture2D texture)
{
List<VertexPositionNormalTexture> output = new List<VertexPositionNormalTexture>();
List<Vector2> edges = new List<Vector2>(); // using x as index1 and y as index2
foreach(Structure s in mesh["medge"].Dereference())
edges.Add(new Vector2((s["v1"] as IField<int>).Value, (s["v2"] as IField<int>).Value));
// a "loop" is a vertex index and an edge index. Groups of these are used to define a "poly", which is a face.
List<Vector2> loops = new List<Vector2>(); // using x as "v" and y as "e"
foreach(Structure s in mesh["mloop"].Dereference())
loops.Add(new Vector2((s["v"] as IField<int>).Value, (s["e"] as IField<int>).Value));
List<Vector2> uvLoops = null; // using x as u and y as v
Vector2[] backupUVs = new[] { new Vector2(0, 0), new Vector2(0, 1), new Vector2(1, 1), new Vector2(1, 0) }; // in case uvLoops is null
if(mesh["mloopuv"].Value != 0)
{
uvLoops = new List<Vector2>();
foreach(Structure s in mesh["mloopuv"].Dereference())
{
float[] uv = s["uv"].Value;
uvLoops.Add(new Vector2(uv[0], uv[1]));
}
}
List<Vector2> polys = new List<Vector2>(); // using x as "loopstart" and y as "totloop" (loop length)
foreach(Structure s in mesh["mpoly"].Dereference())
polys.Add(new Vector2((s["loopstart"] as IField<int>).Value, (s["totloop"] as IField<int>).Value));
// assume all faces use same texture for now
if(mesh["mtpoly"].Value != 0)
{
try
{
// todo: sometimes this line fails, probably due to "assume all faces use same texture"
Structure image = mesh["mtpoly"].Dereference()[0]["tpage"].Dereference()[0];
if(image["packedfile"].Value != 0)
{
byte[] rawImage = file.GetBlockByAddress(image["packedfile"].Dereference()[0]["data"].Value).Data;
using(Stream s = new MemoryStream(rawImage))
texture = Texture2D.FromStream(GraphicsDevice, s);
}
else
{
string texturePath = image["name"].ToString().Split('\0')[0].Replace("/", "\\").Replace("\\\\", "\\");
string filePath = file.GetStructuresOfType("FileGlobal")[0]["filename"].ToString();
filePath = filePath.Substring(0, filePath.LastIndexOf('\\'));
using(Stream s = File.Open((filePath + texturePath).Replace("\'", ""), FileMode.Open, FileAccess.Read))
texture = Texture2D.FromStream(GraphicsDevice, s);
}
}
catch
{
texture = defaultTex;
}
}
else
{
texture = new Texture2D(GraphicsDevice, 1, 1);
texture.SetData(new Color[] { Color.Gray });
}
// loops of length 3 are triangles and can be directly added to the vertex list. loops of length 4
// are quads, and have to be split into two triangles.
foreach(Vector2 poly in polys)
{
Vector2[] faceEdges = new Vector2[(int)poly.Y];
Vector2[] faceUVs = new Vector2[faceEdges.Length];
int j = 0;
int loopOffset = (int)poly.X;
for(int i = loopOffset; i < (int)poly.Y + loopOffset; i++)
{
faceEdges[j] = edges[(int)loops[i].Y];
faceUVs[j] = uvLoops == null ? backupUVs[i - loopOffset] : uvLoops[i];
j++;
}
Vector3[] faceVerts = new Vector3[faceEdges.Length];
Vector3[] faceVertNormals = new Vector3[faceEdges.Length];
for(int i = 0; i < faceEdges.Length; i++)
{
int index = (int)(loops[loopOffset + i].X == faceEdges[i].X ? faceEdges[i].Y : faceEdges[i].X);
faceVerts[i] = verts[index];
faceVertNormals[i] = normals[index];
}
if(faceVerts.Length == 3) // already a triangle
{
// push 0 to the end
Vector2 temp = faceUVs[0];
faceUVs[0] = faceUVs[1];
faceUVs[1] = temp;
temp = faceUVs[1];
faceUVs[1] = faceUVs[2];
faceUVs[2] = temp;
for(int i = 2; i >= 0; i--) // 2, 1, 0
output.Add(new VertexPositionNormalTexture(faceVerts[i], faceVertNormals[i], faceUVs[i]));
}
else if(faceVerts.Length == 4) // quad, split into tris
{
// swap 3 with 1 and 2 with 3
Vector2 temp = faceUVs[1];
faceUVs[1] = faceUVs[3];
faceUVs[3] = temp;
temp = faceUVs[2];
faceUVs[2] = faceUVs[3];
faceUVs[3] = temp;
// 2, 1, 0
for(int i = 2; i >= 0; i--)
output.Add(new VertexPositionNormalTexture(faceVerts[i], faceVertNormals[i], faceUVs[i]));
// 3, 2, 0
for(int i = 3; i >= 1; i--)
output.Add(new VertexPositionNormalTexture(faceVerts[i == 1 ? 0 : i], faceVertNormals[i == 1 ? 0 : i], faceUVs[i == 1 ? 0 : i]));
}
}
return output.ToArray();
}
private VertexPositionNormalTexture[] loadOldModel(BlenderFile file, Structure mesh, List<Vector3> verts, List<Vector3> normals, out Texture2D texture)
{
// I believe this function has a bug when used on a mesh that has unconnected chunks of vertices;
// however the only file I currently have that exhibits this problem decompresses to 240MB when I use the HTML
// renderer tool, so I can't feasibly poke through the data to see what's going wrong.
List<VertexPositionNormalTexture> output = new List<VertexPositionNormalTexture>();
List<int[]> faces = new List<int[]>();
List<float[][]> tFaces = new List<float[][]>();
foreach(Structure s in mesh["mface"].Dereference())
faces.Add(new int[] { s["v1"].Value, s["v2"].Value, s["v3"].Value, s["v4"].Value });
foreach(Structure s in mesh["mtface"].Dereference())
tFaces.Add((float[][])s["uv"].Value);
// assume all faces use same texture
Structure image = mesh["mtface"].Dereference()[0]["tpage"].Dereference()[0];
if(image["packedfile"].Value != 0)
{
byte[] rawImage = file.GetBlockByAddress(image["packedfile"].Dereference()[0]["data"].Value).Data;
using(Stream s = new MemoryStream(rawImage))
texture = Texture2D.FromStream(GraphicsDevice, s);
}
else
{
try
{
string texturePath = image["name"].ToString().Split('\0')[0].Replace("/", "\\").Replace("\\\\", "\\");
string filePath = file.GetStructuresOfType("FileGlobal")[0]["filename"].ToString();
filePath = filePath.Substring(0, filePath.LastIndexOf('\\'));
using(Stream s = File.Open((filePath + texturePath).Replace("\'", ""), FileMode.Open, FileAccess.Read))
texture = Texture2D.FromStream(GraphicsDevice, s);
}
catch
{
texture = defaultTex;
}
}
int j = 0;
foreach(int[] face in faces)
{
Vector3[] faceVerts = new Vector3[face.Length];
Vector3[] faceVertNormals = new Vector3[face.Length];
Vector2[] faceUVs = new Vector2[face.Length];
for(int i = 0; i < face.Length; i++)
{
faceVerts[i] = verts[face[i]];
faceVertNormals[i] = normals[face[i]];
faceUVs[i] = new Vector2(tFaces[j][i][0], tFaces[j][i][1]);
}
j++;
// 2, 1, 0
for(int i = 2; i >= 0; i--)
output.Add(new VertexPositionNormalTexture(faceVerts[i], faceVertNormals[i], faceUVs[i]));
// 3, 2, 0
for(int i = 3; i >= 1; i--)
output.Add(new VertexPositionNormalTexture(faceVerts[i == 1 ? 0 : i], faceVertNormals[i == 1 ? 0 : i], faceUVs[i == 1 ? 0 : i]));
}
return output.ToArray();
}