public static string WriteI3s(string path, I3s i3s)
{
var fileStream = File.Open(path, FileMode.Create);
var binaryWriter = new BinaryWriter(fileStream);
binaryWriter.Write(BitConverter.GetBytes(i3s.VertexCount));
binaryWriter.Write(BitConverter.GetBytes(i3s.FeatureCount));
foreach (var featureVertex in i3s.FeatureVertices)
{
binaryWriter.Write(BitConverter.GetBytes(featureVertex.X));
binaryWriter.Write(BitConverter.GetBytes(featureVertex.Y));
binaryWriter.Write(BitConverter.GetBytes(featureVertex.Z));
}
foreach (var normal in i3s.Normals)
{
binaryWriter.Write(BitConverter.GetBytes(normal.X));
binaryWriter.Write(BitConverter.GetBytes(normal.Y));
binaryWriter.Write(BitConverter.GetBytes(normal.Z));
}
foreach (var uv0 in i3s.Uv0s)
{
binaryWriter.Write(BitConverter.GetBytes(uv0.X));
binaryWriter.Write(BitConverter.GetBytes(uv0.Y));
}
foreach (var color in i3s.Colors)
{
binaryWriter.Write(color.R);
binaryWriter.Write(color.G);
binaryWriter.Write(color.B);
binaryWriter.Write(color.A);
}
foreach (var featureId in i3s.FeatureIds)
{
binaryWriter.Write(BitConverter.GetBytes(featureId));
}
foreach (var facerange in i3s.FaceRanges)
{
binaryWriter.Write(BitConverter.GetBytes(facerange[0]));
binaryWriter.Write(BitConverter.GetBytes(facerange[1]));
}
binaryWriter.Flush();
binaryWriter.Close();
return(fileStream.Name);
}
public static I3s ParseI3s(Stream stream)
{
var i3s = new I3s();
// assume defaultGeometrySchema as a start...
using (var reader = new BinaryReader(stream))
{
i3s.VertexCount = (int)reader.ReadUInt32();
i3s.FeatureCount = (int)reader.ReadUInt32();
var positions = new List <Vector3>();
for (var i = 0; i < i3s.VertexCount; i++)
{
float x = reader.ReadSingle();
float y = reader.ReadSingle();
float z = reader.ReadSingle();
var p = new Vector3()
{
X = x, Y = y, Z = z
};
positions.Add(p);
}
i3s.FeatureVertices = positions;
var normals = new List <Vector3>();
for (var i = 0; i < i3s.VertexCount; i++)
{
float x = reader.ReadSingle();
float y = reader.ReadSingle();
float z = reader.ReadSingle();
var p = new Vector3()
{
X = x, Y = y, Z = z
};
normals.Add(p);
}
i3s.Normals = normals;
var uv0s = new List <Vector2>();
for (var i = 0; i < i3s.VertexCount; i++)
{
float x = reader.ReadSingle();
float y = reader.ReadSingle();
var p = new Vector2()
{
X = x, Y = y
};
uv0s.Add(p);
}
i3s.Uv0s = uv0s;
var colors = new List <Color>();
for (var i = 0; i < i3s.VertexCount; i++)
{
var r = (int)reader.ReadByte();
var g = (int)reader.ReadByte();
var b = (int)reader.ReadByte();
var alpha = (int)reader.ReadByte();
var c = Color.FromArgb(alpha, r, g, b);
colors.Add(c);
}
i3s.Colors = colors;
var ids = new List <long>();
for (var i = 0; i < i3s.FeatureCount; i++)
{
var id = (long)reader.ReadUInt64();
ids.Add(id);
}
i3s.FeatureIds = ids;
var faceRanges = new List <int[]>();
for (var i = 0; i < i3s.FeatureCount; i++)
{
var from = (int)reader.ReadUInt32();
var to = (int)reader.ReadUInt32();
var faceRange = new int[] { from, to };
faceRanges.Add(faceRange);
}
i3s.FaceRanges = faceRanges;
return(i3s);
}
}
