/// <summary>
/// This function reads a polygon.
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
protected override object ReadData(BinaryReader reader)
{
// Create a polygon.
Polygon poly = new Polygon();
// Read a name chunk.
CaligariName name = new CaligariName();
name.Read(reader);
poly.Name = name.name;
// Read the local axies.
CaligariAxies axies = new CaligariAxies();
axies.Read(reader);
poly.Translate = axies.centre;
// poly.Rotate = axies.rotate;
// Read the position matrix.
CaligariPosition pos = new CaligariPosition();
pos.Read(reader);
// Read number of verticies.
int verticesCount = reader.ReadInt32();
// Get them all
for(int i=0; i<verticesCount; i++)
{
// Read a vertex.
Vertex vertex = new Vertex(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
// Multiply it by the position matrix.
vertex = vertex * pos.matrix;
// Add it.
poly.Vertices.Add(vertex);
}
// Read UV count.
int uvsCount = reader.ReadInt32();
// Read all of the UVs
for(int i=0; i<uvsCount; i++)
poly.UVs.Add(new UV(reader.ReadInt32(), reader.ReadInt32()));
// Read faces count.
int faces = reader.ReadInt32();
// Read each face.
for(int f= 0; f<faces; f++)
{
Face face = new Face();
poly.Faces.Add(face);
// Read face type flags.
byte flags = reader.ReadByte();
// Read vertex count
short verticesInFace = reader.ReadInt16();
// Do we read a material number?
if((flags&0x08) == 0) // is it a 'hole' face?
reader.ReadInt16();
// Now read the indices, a vertex index and a uv index.
for(short j=0; j<verticesInFace; j++)
face.Indices.Add(new Index(reader.ReadInt32(), reader.ReadInt32()));
}
// Any extra stuff?
if(header.minorVersion > 4)
{
// read flags.
reader.ReadChars(4);
if((header.minorVersion > 5) && (header.minorVersion < 8))
reader.ReadChars(2);
}
// Now that we've loaded the polygon, we triangulate it.
poly.Triangulate();
// Finally, we update normals.
poly.Validate(true);
return poly;
}
protected override object LoadData(Stream stream)
{
// We use a binary reader for this data.
BinaryReader reader = new BinaryReader(stream, System.Text.Encoding.ASCII);
// Create a polygon.
Polygon poly = new Polygon();
// Read the translate, scale, rotate.
poly.Translate.X = reader.ReadSingle();
poly.Translate.Y = reader.ReadSingle();
poly.Translate.Z = reader.ReadSingle();
poly.Scale.X = reader.ReadSingle();
poly.Scale.Y = reader.ReadSingle();
poly.Scale.Z = reader.ReadSingle();
poly.Rotate.X = reader.ReadSingle();
poly.Rotate.Y = reader.ReadSingle();
poly.Rotate.Z = reader.ReadSingle();
// Read number of verticies.
int verticesCount = reader.ReadInt32();
// Get them all
for(int i=0; i<verticesCount; i++)
{
// Read a vertex.
Vertex vertex = new Vertex(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
// Add it.
poly.Vertices.Add(vertex);
}
// Read UV count.
int uvsCount = reader.ReadInt32();
// Read all of the UVs
for(int i=0; i<uvsCount; i++)
poly.UVs.Add(new UV(reader.ReadInt32(), reader.ReadInt32()));
// Read faces count.
int faces = reader.ReadInt32();
// Read each face.
for(int f= 0; f<faces; f++)
{
Face face = new Face();
poly.Faces.Add(face);
// Read index count
int indices = reader.ReadInt32();
// Now read the indices, a vertex index and a uv index and a color index.
for(int j=0; j<indices; j++)
{
face.Indices.Add(new Index(reader.ReadInt32(), reader.ReadInt32()));
int colour = reader.ReadInt32(); //not used.
}
}
// Finally, we update normals.
poly.Validate(true);
return poly;
}