public string ToJson()
{
// I did think of using a JSON serialiser,
// either one of these two provided by the
// .NET framework or one of the other libraries:
// System.Runtime.Serialization.Json.DataContractJsonSerializer
// System.Web.Script.Serialization.JavaScriptSerializer
// However, reading this comparison and alternative
// implementation, I decided to just write the couple
// of lines myself.
// http://procbits.com/2011/08/11/fridaythe13th-the-best-json-parser-for-silverlight-and-net
string s = string.Format
("\n \"FacetCount\":{0},"
+ "\n \"VertexCount\":{1},"
+ "\n \"VertexCoords\":[{2}],"
+ "\n \"VertexIndices\":[{3}],"
+ "\n \"Normals\":[{4}],"
+ "\n \"NormalIndices\":[{5}],"
+ "\n \"Center\":[{6}],"
+ "\n \"Color\":[{7}],"
+ "\n \"Id\":\"{8}\"",
FacetCount,
VertexCount,
string.Join(",", VertexCoords.Select <int, string>(i => (_export_factor * i).ToString("0.#")).ToArray()),
string.Join(",", VertexIndices.Select <int, string>(i => i.ToString()).ToArray()),
string.Join(",", Normals.Select <double, string>(a => a.ToString("0.####")).ToArray()),
string.Join(",", NormalIndices.Select <int, string>(i => i.ToString())),
string.Join(",", Center.Select <int, string>(i => (_export_factor * i).ToString("0.#"))),
Color,
Id);
return("\n{" + s + "\n}");
}
/// <summary>
/// write obj file
/// </summary>
/// <param name="writer"></param>
public void Write(StreamWriter writer)
{
writer.WriteLine("# File generated by Arctron BIMClient");
if (!String.IsNullOrEmpty(MatFilename))
{
writer.WriteLine($"mtllib {MatFilename}");
}
var vs = String.Join(Environment.NewLine, Vertices.Select(v => $"v {v.X} {v.Y} {v.Z}"));
writer.WriteLine(vs);
writer.Flush();
var ts = String.Join(Environment.NewLine, Uvs.Select(t => $"vt {t.U} {t.V}"));
writer.WriteLine(ts);
writer.Flush();
var ns = String.Join(Environment.NewLine, Normals.Select(n => $"vn {n.X} {n.Y} {n.Z}"));
writer.WriteLine(ns);
writer.Flush();
foreach (var g in Geometries)
{
g.Write(writer);
}
}