private IEnumerable <Facet> ReadASCII(Stream stream)
{
stream.Position = 0;
Vect3 normal = null;
var vertices = new Vect3[3];
var i = 0;
const NumberStyles style = NumberStyles.AllowExponent | NumberStyles.AllowLeadingSign | NumberStyles.Number;
using (var reader = new StreamReader(stream))
{
string line;
while ((line = reader.ReadLine()) != null)
{
var split = line.Trim().Split((char[])null, StringSplitOptions.RemoveEmptyEntries);
switch (split[0].ToLower())
{
case "solid":
if (split.Length > 1)
{
Header = split[1];
}
break;
case "facet":
normal = new Vect3(float.Parse(split[2], style), float.Parse(split[3], style), float.Parse(split[4], style));
break;
case "outer":
break;
case "vertex":
vertices[i++] = new Vect3(float.Parse(split[1], style), float.Parse(split[2], style), float.Parse(split[3], style));
break;
case "endloop":
break;
case "endfacet":
if (normal != null && vertices.All(v => v != null))
{
yield return(new Facet(normal, vertices[0], vertices[1], vertices[2]));
}
i = 0;
break;
case "endsolid":
break;
}
}
}
}