public Mesh CreateMeshFromBinary(MemoryStream stream)
{
var br = new BinaryReader(stream);
// seeks past the header
br.BaseStream.Seek(80, SeekOrigin.Begin);
var numberOfFacets = br.ReadInt32();
var mesh = new Mesh {Facets = new Collection<Facet>()};
for (long i = 0; i < numberOfFacets; i++)
{
mesh.Facets.Add(new Facet
{
Normal =
new Point {X = br.ReadSingle(), Y = br.ReadSingle(), Z = br.ReadSingle()},
Vertices = new Collection<Point>
{
new Point
{
X = br.ReadSingle(),
Y = br.ReadSingle(),
Z = br.ReadSingle()
},
new Point
{
X = br.ReadSingle(),
Y = br.ReadSingle(),
Z = br.ReadSingle()
},
new Point
{
X = br.ReadSingle(),
Y = br.ReadSingle(),
Z = br.ReadSingle()
}
}
});
// unused attribute byte count
br.ReadInt16();
}
return mesh;
}
public Mesh CreateMeshFromAscii(string data)
{
var lines = data.ToUpper().Split(new[] { Environment.NewLine }, StringSplitOptions.None);
var mesh = new Mesh { Facets = new Collection<Facet>() };
Facet facet = null;
foreach (var line in lines)
{
var tokens = line.Split();
if (tokens[0] == ("FACET"))
{
facet = new Facet
{
Normal = new Point
{
X = float.Parse(tokens[2]),
Y = float.Parse(tokens[3]),
Z = float.Parse(tokens[4])
}
};
}
if(tokens[0] == "OUTER" && tokens[1] == "LOOP")
{
if (facet != null)
{
facet.Vertices = new Collection<Point>();
}
else
{
throw new ApplicationException();
}
}
if (tokens[0] == "VERTEX")
{
if (facet != null && facet.Vertices != null)
{
facet.Vertices.Add(new Point
{
X = float.Parse(tokens[1]),
Y = float.Parse(tokens[2]),
Z = float.Parse(tokens[3])
});
}
else
{
throw new ApplicationException();
}
}
if (tokens[0] == "ENDFACET")
{
mesh.Facets.Add(facet);
}
}
return mesh;
}
