public override Scene ImportFile(FileStream fileStream, string fileName)
{
Scene3ds scene3ds = new Scene3ds(fileStream, null, Scene3ds.DECODE_ALL);
Scene result = new Scene();
// Compute normals for our scene
computeNormals(scene3ds, result);
Material defaultMaterial = new Material
{
Name = "Default",
FileName = fileName,
DiffuseColor = ColorsRgbF.Gray,
SpecularColor = ColorsRgbF.White,
Shininess = 64
};
for (int i = 0; i < scene3ds.Materials.Count(); ++i)
{
Material3ds material3ds = scene3ds.Materials.ElementAt(i);
Material material = new Material
{
Name = material3ds.name(),
FileName = fileName,
DiffuseColor = material3ds.diffuse().ToColorRgbF(),
AmbientColor = material3ds.ambient().ToColorRgbF(),
SpecularColor = material3ds.specular().ToColorRgbF(),
Transparency = material3ds.transparency()
};
if (material3ds.DiffuseTexture != null)
{
material.DiffuseTextureName = Path.Combine(Path.GetDirectoryName(fileName), material3ds.DiffuseTexture.MapName);
}
if ((int)material3ds._shininess != 0)
{
material.Shininess = (int)material3ds._shininess;
}
result.Materials.Add(material);
}
for (int i = 0; i < scene3ds.Meshes.Count(); ++i)
{
Mesh3ds mesh3ds = scene3ds.Meshes.ElementAt(i);
Mesh resultMesh = result.Meshes[i];
//resultMesh.Material = defaultMaterial;
// TODO: Is this right?
if (mesh3ds.faceMats() == 0)
{
resultMesh.Material = defaultMaterial;
for (int fi = 0; fi < mesh3ds.faces(); ++fi)
{
Face3ds f = mesh3ds.face(fi);
resultMesh.Indices.Add(f.P0);
resultMesh.Indices.Add(f.P1);
resultMesh.Indices.Add(f.P2);
}
}
else
{
// TODO: Split by face materials so that each mesh only has one material.
Debug.Assert(mesh3ds.faceMats() == 1);
for (int fm = 0; fm < mesh3ds.faceMats(); ++fm)
{
// Get current material's face.
FaceMat3ds fmat = mesh3ds.faceMat(fm);
Material material = result.Materials[fmat.material()];
resultMesh.Material = material;
for (int fi = 0; fi < fmat.faces(); ++fi)
{
int idx = fmat.face(fi);
Face3ds f = mesh3ds.face(idx);
resultMesh.Indices.Add(f.P0);
resultMesh.Indices.Add(f.P1);
resultMesh.Indices.Add(f.P2);
}
}
}
}
return(result);
}
private void read_FACE_ARRAY(Mesh3ds mes, int chunk_len)
{
long chunk_end = filePos() + chunk_len;
int faces = ReadUnsignedShort();
mes.mFace = new Face3ds[faces];
for (int n = 0; n < faces; n++)
{
int p0 = ReadUnsignedShort();
int p1 = ReadUnsignedShort();
int p2 = ReadUnsignedShort();
int flags = ReadUnsignedShort();
mes.mFace[n] = new Face3ds(p0, p1, p2, flags);
}
if (mDecode != null)
{
mDecode.enter();
mDecode.println("Faces: " + faces);
for (int i = 0; i < faces; i++)
{
mDecode.println(" " + Utils3ds.intToString(i, 4) + ": " + mes.mFace[i]);
}
}
while (filePos() < chunk_end)
{
Head head = read_HEAD();
switch (head.id)
{
case CHUNK_MSH_MAT_GROUP:
read_MSH_MAT_GROUP(mes);
break;
case CHUNK_SMOOTH_GROUP:
read_SMOOTH_GROUP(mes, head.length - 6);
break;
default:
SkipChunk(head.length - 6);
break;
}
}
if (mDecode != null)
{
mDecode.leave();
}
}
//
// Compute scene vertex normals
//
public void computeNormals(Scene3ds scene, Scene result)
{
Point3D vcenter = Point3D.Zero;
float vcounter = 0.0f;
for (int i = 0; i < scene.Meshes.Count(); i++)
{
Mesh3ds m = scene.Meshes.ElementAt(i);
// Alloc memory
Mesh mesh = new Mesh
{
Name = m.Name
};
result.Meshes.Add(mesh);
//mesh._numTexCoords = 0;
Vector3D[] tmpFaceNormals = new Vector3D[m.faces()];
// Compute face normals
for (int fi = 0; fi < m.faces(); fi++)
{
Face3ds f = m.face(fi);
Vertex3ds p0 = m.vertex(f.P0);
Vertex3ds p1 = m.vertex(f.P1);
Vertex3ds p2 = m.vertex(f.P2);
/*// Compute face middle point
* mesh.faceMiddlePoint[fi] = new PVector();
* mesh.faceMiddlePoint[fi].x = (p0.X + p1.X + p2.X) / 3.0f;
* mesh.faceMiddlePoint[fi].y = (p0.Y + p1.Y + p2.Y) / 3.0f;
* mesh.faceMiddlePoint[fi].z = (p0.Z + p1.Z + p2.Z) / 3.0f;*/
Point3D v0 = new Point3D(p0.X, p0.Y, p0.Z);
Point3D v1 = new Point3D(p1.X, p1.Y, p1.Z);
Point3D v2 = new Point3D(p2.X, p2.Y, p2.Z);
Vector3D e0 = v1 - v0;
Vector3D e1 = v2 - v0;
//mesh.faceNormals[fi] = e1.cross(e0);
// save a copy of the unnormalized face normal. used for average vertex normals
tmpFaceNormals[fi] = Vector3D.Cross(e1, e0);
// normalize face normal
//mesh.faceNormals[fi].normalize();
}
//
// Compute vertex normals.Take average from adjacent face normals.find coplanar faces or get weighted normals.
// One could also use the smooth groups from 3ds to compute normals, we'll see about that.
//
//PVector v = new PVector();
TexCoord3ds tc = new TexCoord3ds(0, 0);
for (int vi = 0; vi < m.vertices(); vi++)
{
Vertex3ds p = m.vertex(vi);
vcenter += new Point3D(p.X, p.Y, p.Z);
vcounter++;
if (m.texCoords() > 0)
{
tc = m.texCoord(vi);
}
Vector3D n = Vector3D.Zero;
float num = 0;
for (int fi = 0; fi < m.faces(); fi++)
{
Face3ds f = m.face(fi);
// Vertex3ds p0 = m.vertex(f.P0);
// Vertex3ds p1 = m.vertex(f.P1);
// Vertex3ds p2 = m.vertex(f.P2);
if (vi == f.P0 || vi == f.P1 || vi == f.P2)
{
num++;
n += tmpFaceNormals[fi]; //mesh.faceNormals[fi] );
}
}
if (num > 0)
{
n *= 1.0f / (float)num;
}
n.Normalize();
mesh.Normals.Add(n);
if (FLIPYZ)
{
Vector3D tmp = mesh.Normals[vi];
mesh.Normals[vi] = new Vector3D(tmp.X, -tmp.Z, tmp.Y);
}
// Save vertex data
if (FLIPYZ)
{
mesh.Positions.Add(new Point3D(p.X, -p.Z, p.Y));
}
else
{
mesh.Positions.Add(new Point3D(p.X, p.Y, p.Z));
}
// Save texcoord data
//mesh._numTexCoords = m.texCoords();
if (m.texCoords() > 0)
{
if (FLIPV)
{
mesh.TextureCoordinates.Add(new Point3D(tc.U, 1.0f - tc.V, 0));
}
else
{
mesh.TextureCoordinates.Add(new Point3D(tc.U, tc.V, 0));
}
}
}
}
if (vcounter > 0.0)
{
vcenter /= vcounter;
}
}
// Add mesh at end of mesh array
void addMesh(Mesh3ds m)
{
_meshes.Add(m);
}
private void read_SMOOTH_GROUP(Mesh3ds mes, int chunk_len)
{
int entrys = chunk_len / 4;
mes.mSmoothGroup = new int[entrys];
for (int n = 0; n < entrys; n++)
{
mes.mSmoothGroup[n] = ReadInt();
}
if (mDecode != null)
{
mDecode.enter();
mDecode.println("Entrys: " + entrys);
for (int i = 0; i < entrys; i++)
{
mDecode.println(Utils3ds.intToString(i, 4) + ": " + Utils3ds.intToBinString(mes.mSmoothGroup[i], 32));
}
mDecode.leave();
}
if (entrys != mes.faces())
{
throw new Exception3ds("SMOOTH_GROUP entrys != faces. File is probably corrupt!");
}
}
private void read_N_TRI_OBJECT(string name, int chunk_len)
{
long chunk_end = filePos() + chunk_len;
Mesh3ds mes = new Mesh3ds();
mes.Name = name;
addMesh(mes);
if (mDecode != null)
{
mDecode.enter();
}
while (filePos() < chunk_end)
{
Head head = read_HEAD();
switch (head.id)
{
case CHUNK_POINT_ARRAY:
mes.mVertex = read_POINT_ARRAY();
break;
case CHUNK_TEX_VERTS:
mes.mTexCoord = read_TEX_VERTS();
break;
case CHUNK_MESH_TEXTURE_INFO:
read_MESH_TEXTURE_INFO(mes);
break;
case CHUNK_MESH_MATRIX:
readMatrix(mes.mLocalSystem);
break;
case CHUNK_FACE_ARRAY:
read_FACE_ARRAY(mes, head.length - 6);
break;
default:
SkipChunk(head.length - 6);
break;
}
}
if (mDecode != null)
{
mDecode.leave();
}
}
private void read_MSH_MAT_GROUP(Mesh3ds mes)
{
string name = ReadName();
FaceMat3ds fm = new FaceMat3ds();
mes.addFaceMat(fm);
for (int i = 0; i < Materials.Count(); i++)
{
if (Materials.ElementAt(i).name().Equals(name) == true)
{
fm.mMatIndex = i;
break;
}
}
int indexes = ReadUnsignedShort();
fm.mFaceIndex = new int[indexes];
for (int n = 0; n < indexes; n++)
{
fm.mFaceIndex[n] = ReadUnsignedShort();
}
if (mDecode != null)
{
mDecode.enter();
mDecode.println("Faces: " + indexes);
for (int t = 0; t < indexes; t++)
{
mDecode.println(" face: " + fm.mFaceIndex[t]);
}
mDecode.leave();
}
}
private void read_MESH_TEXTURE_INFO(Mesh3ds mes)
{
mes.TextureMappingMode = (TextureMappingMode3ds) ReadUnsignedShort();
mes.mTexUTile = ReadFloat();
mes.mTexVTile = ReadFloat();
if (mDecode != null)
{
mDecode.enter();
string type = "";
switch (mes.TextureMappingMode)
{
case TextureMappingMode3ds.PlanarMap:
type = "PLANAR";
break;
case TextureMappingMode3ds.CylindricalMap:
type = "CYLINDRICAL";
break;
case TextureMappingMode3ds.SphericalMap:
type = "SPHERICAL";
break;
default:
type = "" + mes.TextureMappingMode;
break;
}
mDecode.println("Texture mapping type: " + type);
mDecode.println("Texture U tiling: " + Utils3ds.floatToString(mes.mTexUTile, 9));
mDecode.println("Texture V tiling: " + Utils3ds.floatToString(mes.mTexVTile, 9));
}
SkipBytes(4 * 4 + (3 * 4 + 3) * 4);
if (mDecode != null)
{
mDecode.leave();
}
}
