/// <summary>
/// Reads the model from the specified stream.
/// </summary>
/// <param name="s">The stream.</param>
/// <returns>The model.</returns>
public Object3DGroup Read(string path, ModelInfo info = default(ModelInfo))
{
using (var s = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read))
{
return this.Read(s, info);
}
}
/// <summary>
/// Reads the model from the specified stream.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="info"></param>
/// <returns>The model.</returns>
public override Mesh3DGroup Read(Stream stream, ModelInfo info = default(ModelInfo))
{
// Try to read in BINARY format
var success = this.TryReadBinary(stream);
if (!success)
{
// Reset position of stream
stream.Position = 0;
// Read in ASCII format
success = this.TryReadAscii(stream);
}
if (success)
{
return(this.ToModel3D());
}
return(null);
}
/// <summary>
/// Reads the model from the specified stream.
/// </summary>
/// <param name="s">
/// The stream.
/// </param>
/// <returns>
/// The model.
/// </returns>
public Object3DGroup Read(Stream s, ModelInfo info = default(ModelInfo))
{
using (this.Reader = new StreamReader(s))
{
this.currentLineNo = 0;
while (!this.Reader.EndOfStream)
{
this.currentLineNo++;
var line = this.Reader.ReadLine();
if (line == null)
{
break;
}
line = line.Trim();
while (line.EndsWith("\\"))
{
var nextLine = this.Reader.ReadLine();
while (nextLine.Length == 0)
{
nextLine = this.Reader.ReadLine();
}
line = line.TrimEnd('\\') + nextLine;
}
if (line.StartsWith("#") || line.Length == 0)
{
continue;
}
string keyword, values;
SplitLine(line, out keyword, out values);
try
{
switch (keyword.ToLower())
{
// Vertex data
case "v": // geometric vertices
this.AddVertex(values);
break;
case "vt": // texture vertices
this.AddTexCoord(values);
break;
case "vn": // vertex normals
this.AddNormal(values);
break;
case "vp": // parameter space vertices
case "cstype": // rational or non-rational forms of curve or surface type: basis matrix, Bezier, B-spline, Cardinal, Taylor
case "degree": // degree
case "bmat": // basis matrix
case "step": // step size
// not supported
break;
// Elements
case "f": // face
this.AddFace(values);
break;
case "p": // point
case "l": // line
case "curv": // curve
case "curv2": // 2D curve
case "surf": // surface
// not supported
break;
// Free-form curve/surface body statements
case "parm": // parameter name
case "trim": // outer trimming loop (trim)
case "hole": // inner trimming loop (hole)
case "scrv": // special curve (scrv)
case "sp": // special point (sp)
case "end": // end statement (end)
// not supported
break;
// Connectivity between free-form surfaces
case "con": // connect
// not supported
break;
// Grouping
case "g": // group name
this.AddGroup(values);
break;
case "s": // smoothing group
this.SetSmoothingGroup(values);
break;
case "mg": // merging group
break;
case "o": // object name
// not supported
break;
// Display/render attributes
case "mtllib": // material library
this.LoadMaterialLib(values);
break;
case "usemtl": // material name
this.EnsureNewMesh();
this.SetMaterial(values);
break;
case "usemap": // texture map name
this.EnsureNewMesh();
break;
case "bevel": // bevel interpolation
case "c_interp": // color interpolation
case "d_interp": // dissolve interpolation
case "lod": // level of detail
case "shadow_obj": // shadow casting
case "trace_obj": // ray tracing
case "ctech": // curve approximation technique
case "stech": // surface approximation technique
// not supported
break;
}
}
catch (Exception ex)
{
System.Windows.MessageBox.Show(string.Format("Error loading object: {0}", ex.Message), "Error", MessageBoxButton.OKCancel);
}
}
}
return(this.BuildModel());
}
/// <summary>
/// Reads the model from the specified stream.
/// </summary>
/// <param name="s">
/// The stream.
/// </param>
/// <returns>
/// The model.
/// </returns>
public Object3DGroup Read(Stream s, ModelInfo info = default(ModelInfo))
{
using (this.Reader = new StreamReader(s))
{
this.currentLineNo = 0;
while (!this.Reader.EndOfStream)
{
this.currentLineNo++;
var line = this.Reader.ReadLine();
if (line == null)
{
break;
}
line = line.Trim();
while (line.EndsWith("\\"))
{
var nextLine = this.Reader.ReadLine();
while (nextLine.Length == 0)
{
nextLine = this.Reader.ReadLine();
}
line = line.TrimEnd('\\') + nextLine;
}
if (line.StartsWith("#") || line.Length == 0)
{
continue;
}
string keyword, values;
SplitLine(line, out keyword, out values);
try
{
switch (keyword.ToLower())
{
// Vertex data
case "v": // geometric vertices
this.AddVertex(values);
break;
case "vt": // texture vertices
this.AddTexCoord(values);
break;
case "vn": // vertex normals
this.AddNormal(values);
break;
case "vp": // parameter space vertices
case "cstype": // rational or non-rational forms of curve or surface type: basis matrix, Bezier, B-spline, Cardinal, Taylor
case "degree": // degree
case "bmat": // basis matrix
case "step": // step size
// not supported
break;
// Elements
case "f": // face
this.AddFace(values);
break;
case "p": // point
case "l": // line
case "curv": // curve
case "curv2": // 2D curve
case "surf": // surface
// not supported
break;
// Free-form curve/surface body statements
case "parm": // parameter name
case "trim": // outer trimming loop (trim)
case "hole": // inner trimming loop (hole)
case "scrv": // special curve (scrv)
case "sp": // special point (sp)
case "end": // end statement (end)
// not supported
break;
// Connectivity between free-form surfaces
case "con": // connect
// not supported
break;
// Grouping
case "g": // group name
this.AddGroup(values);
break;
case "s": // smoothing group
this.SetSmoothingGroup(values);
break;
case "mg": // merging group
break;
case "o": // object name
// not supported
break;
// Display/render attributes
case "mtllib": // material library
this.LoadMaterialLib(values);
break;
case "usemtl": // material name
this.EnsureNewMesh();
this.SetMaterial(values);
break;
case "usemap": // texture map name
this.EnsureNewMesh();
break;
case "bevel": // bevel interpolation
case "c_interp": // color interpolation
case "d_interp": // dissolve interpolation
case "lod": // level of detail
case "shadow_obj": // shadow casting
case "trace_obj": // ray tracing
case "ctech": // curve approximation technique
case "stech": // surface approximation technique
// not supported
break;
}
}
catch (Exception ex)
{
System.Windows.MessageBox.Show(string.Format("Error loading object: {0}", ex.Message), "Error", MessageBoxButton.OKCancel);
}
}
}
return this.BuildModel();
}
/// <summary>
/// Reads the model from the specified path.
/// </summary>
/// <param name="path">
/// The path.
/// </param>
/// <returns>
/// The model.
/// </returns>
public Object3DGroup Read(string path, ModelInfo info = default(ModelInfo))
{
this.TexturePath = Path.GetDirectoryName(path);
this.ModelInfo = info;
using (var s = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read))
{
return this.Read(s);
}
}
/// <summary>
/// Creates the models of the group.
/// </summary>
/// <returns>The models.</returns>
public IEnumerable<Object3D> CreateModels(ModelInfo info)
{
for (int i = 0; i < this.meshBuilders.Count; i++)
{
this.meshBuilders[i].ComputeNormalsAndTangents(info.Faces, true);
yield return new Object3D
{
Geometry = this.meshBuilders[i].ToMeshGeometry3D(),
Material = this.materials[i],
Transform = Matrix.Identity,
//BackMaterial = this.materials[i]
};
}
}
/// <summary>
/// Creates a MeshGeometry3D object from the loaded file. Polygons are triangulated using triangle fans.
/// </summary>
/// <returns>
/// A MeshGeometry3D.
/// </returns>
public MeshGeometry3D CreateMeshGeometry3D(ModelInfo info = default(ModelInfo))
{
var mb = new MeshBuilder(info.Normals, info.Tangents);
foreach (var p in this.Vertices)
{
mb.Positions.Add(p);
}
foreach (var face in this.Faces)
{
mb.AddTriangleFan(face);
}
mb.ComputeNormalsAndTangents(info.Faces);
return mb.ToMeshGeometry3D();
}
/// <summary>
/// Reads the model from the specified stream.
/// </summary>
/// <param name="s">The stream.</param>
/// <returns>The model.</returns>
public Object3DGroup Read(Stream s, ModelInfo info = default(ModelInfo))
{
this.Load(s);
return this.BuildModel(info);
}
/// <summary>
/// Creates a Model3D object from the loaded file.
/// </summary>
/// <returns>A Model3D group.</returns>
public Object3DGroup BuildModel(ModelInfo info = default(ModelInfo))
{
Object3DGroup modelGroup = null;
modelGroup = new Object3DGroup();
var g = this.CreateMeshGeometry3D(info);
var gm = new Object3D() { Geometry = g, Material = PhongMaterials.DefaultVRML, Transform = Matrix.Identity, };
modelGroup.Add(gm);
return modelGroup;
}
/// <summary>
/// Reads the model from the specified stream.
/// </summary>
/// <param name="s">The stream.</param>
/// <param name="info">The model info.</param>
/// <returns>The model.</returns>
public Object3DGroup Read(Stream s, ModelInfo info = default(ModelInfo))
{
this.Load(s);
return(this.BuildModel(info));
}
public Object3DGroup Read(Stream s,ModelInfo info=default(ModelInfo))
{
using (var reader = new BinaryReader(s))
{
long length = reader.BaseStream.Length;
var headerId = this.ReadChunkId(reader);
if (headerId != ChunkID.MAIN3DS)
{
throw new FileFormatException("Unknown file");
}
int headerSize = this.ReadChunkSize(reader);
if (headerSize != length)
{
throw new FileFormatException("Incomplete file (file length does not match header)");
}
while (reader.BaseStream.Position < reader.BaseStream.Length)
{
var id = this.ReadChunkId(reader);
int size = this.ReadChunkSize(reader);
switch (id)
{
case ChunkID.EDIT_MATERIAL:
this.ReadMaterial(reader, size);
break;
case ChunkID.EDIT_OBJECT:
this.ReadObject(reader, size);
break;
case ChunkID.EDIT3DS:
case ChunkID.OBJ_CAMERA:
case ChunkID.OBJ_LIGHT:
case ChunkID.OBJ_TRIMESH:
// don't read the whole chunk, read the sub-defines...
break;
default:
// download the whole chunk
this.ReadData(reader, size - 6);
break;
}
}
}
return obGroup;
}
public Object3DGroup Read(string path, ModelInfo info = default(ModelInfo))
{
this.Directory = Path.GetDirectoryName(path);
using (var s = File.OpenRead(path))
{
return this.Read(s);
};
}
/// <summary> /// Reads the model from the specified stream. /// </summary> /// <param name="s">The stream.</param> /// <param name="info"></param> /// <returns>The model.</returns> public abstract Mesh3DGroup Read(Stream s, ModelInfo info = default(ModelInfo));
