public static TurtleMesh ExtractTMesh(Curve c)
{
var m = new TurtleMesh();
Polyline pl;
c.TryGetPolyline(out pl);
TurtleFace f = new TurtleFace(pl.Count - 1);
for (int j = 0; j < pl.Count - 1; j++)
{
var v = pl[j];
f.Add(m.VertexCount);
m.AddVertex(new TurtleVertex((float)v.X, (float)v.Y, (float)v.Z));
}
m.AddFace(f);
return(m);
}
public static ITurtleMesh Read(TextReader sr)
{
TurtleMesh m = new TurtleMesh();
var ci = System.Globalization.CultureInfo.InvariantCulture;
int linecount = 0;
string line;
while ((line = sr.ReadLine()) != null)
{
linecount++;
if (line.TrimStart(_separators).StartsWith("#", StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
var tokens = line.Split(_separators, StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length < 2)
{
continue;
}
var token0 = tokens[0].ToLowerInvariant();
if (token0 == "v")
{
if (tokens.Length < 4 || tokens.Length > 5)
{
throw new ArgumentOutOfRangeException(string.Format("Line {0} contains a vertex with number of coordinates different than 3 or 4.", linecount.ToString(ci)));
}
float x;
if (!float.TryParse(tokens[1], System.Globalization.NumberStyles.Any, ci, out x))
{
throw new ArgumentException(string.Format("Line {0} contains an invalid X coordinate.", linecount.ToString(ci)));
}
float y;
if (!float.TryParse(tokens[2], System.Globalization.NumberStyles.Any, ci, out y))
{
throw new ArgumentException(string.Format("Line {0} contains an invalid Y coordinate.", linecount.ToString(ci)));
}
float z;
if (!float.TryParse(tokens[3], System.Globalization.NumberStyles.Any, ci, out z))
{
throw new ArgumentException(string.Format("Line {0} contains an invalid Z coordinate.", linecount.ToString(ci)));
}
TurtleVertex v = new TurtleVertex(x, y, z);
m.AddVertex(v);
}
else if (token0 == "f")
{
if (tokens.Length < 3)
{
throw new ArgumentOutOfRangeException(string.Format("Line {0} contains a face with less than three indices.", linecount.ToString(ci)));
}
var f = new TurtleFace();
for (int i = 1; i < tokens.Length; i++)
{
int loc;
if (!int.TryParse(tokens[i], System.Globalization.NumberStyles.Integer, ci, out loc))
{
throw new ArgumentException(string.Format("Line {0} contains an invalid face number in token {1}.", linecount.ToString(ci), (i - 1).ToString(ci)));
}
f.Add(loc - 1);
}
m.AddFace(f);
}
//else texture, else normal
}
return(m);
}
public static ITurtleMesh Read(TextReader sr)
{
TurtleMesh m = new TurtleMesh();
var ci = System.Globalization.CultureInfo.InvariantCulture;
int linecount = 0;
string line;
while ((line = sr.ReadLine()) != null)
{
linecount++;
if (line.TrimStart(_separators).StartsWith("#", StringComparison.InvariantCultureIgnoreCase)) continue;
var tokens = line.Split(_separators, StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length < 2) continue;
var token0 = tokens[0].ToLowerInvariant();
if (token0 == "v")
{
if (tokens.Length < 4 || tokens.Length > 5)
throw new ArgumentOutOfRangeException(string.Format("Line {0} contains a vertex with number of coordinates different than 3 or 4.", linecount.ToString(ci)));
float x;
if(!float.TryParse(tokens[1], System.Globalization.NumberStyles.Any, ci, out x))
throw new ArgumentException(string.Format("Line {0} contains an invalid X coordinate.", linecount.ToString(ci)));
float y;
if (!float.TryParse(tokens[2], System.Globalization.NumberStyles.Any, ci, out y))
throw new ArgumentException(string.Format("Line {0} contains an invalid Y coordinate.", linecount.ToString(ci)));
float z;
if (!float.TryParse(tokens[3], System.Globalization.NumberStyles.Any, ci, out z))
throw new ArgumentException(string.Format("Line {0} contains an invalid Z coordinate.", linecount.ToString(ci)));
TurtleVertex v = new TurtleVertex(x, y, z);
m.AddVertex(v);
}
else if (token0 == "f")
{
if (tokens.Length < 3)
throw new ArgumentOutOfRangeException(string.Format("Line {0} contains a face with less than three indices.", linecount.ToString(ci)));
var f = new TurtleFace();
for (int i = 1; i < tokens.Length; i++)
{
int loc;
if (!int.TryParse(tokens[i], System.Globalization.NumberStyles.Integer, ci, out loc))
throw new ArgumentException(string.Format("Line {0} contains an invalid face number in token {1}.", linecount.ToString(ci), (i - 1).ToString(ci)));
f.Add(loc - 1);
}
m.AddFace(f);
}
//else texture, else normal
}
return m;
}