private void FinalizeCurrentMaterial()
{
if (_currentDefinition != null)
{
_definitions.Add(_currentDefinition);
_currentDefinition = null;
}
}
public void Process(string line)
{
_currentLine++;
_currentLineText = line;
string[] pieces = line.Split(s_whitespaceChars, StringSplitOptions.RemoveEmptyEntries);
if (pieces.Length == 0 || pieces[0].StartsWith("#"))
{
return;
}
switch (pieces[0].ToLowerInvariant().Trim())
{
case "newmtl":
ExpectExactly(pieces, 1, "newmtl");
FinalizeCurrentMaterial();
_currentDefinition = new MaterialDefinition(pieces[1]);
break;
case "ka":
ExpectExactly(pieces, 3, "Ka");
_currentDefinition.AmbientReflectivity = ParseVector3(pieces[1], pieces[2], pieces[3], "Ka");
break;
case "kd":
ExpectExactly(pieces, 3, "Kd");
_currentDefinition.DiffuseReflectivity = ParseVector3(pieces[1], pieces[2], pieces[3], "Kd");
break;
case "ks":
ExpectExactly(pieces, 3, "Ks");
_currentDefinition.SpecularReflectivity = ParseVector3(pieces[1], pieces[2], pieces[3], "Ks");
break;
case "ke": // Non-standard?
ExpectExactly(pieces, 3, "Ke");
_currentDefinition.EmissiveCoefficient = ParseVector3(pieces[1], pieces[2], pieces[3], "Ks");
break;
case "tf":
ExpectExactly(pieces, 3, "Tf");
_currentDefinition.TransmissionFilter = ParseVector3(pieces[1], pieces[2], pieces[3], "Tf");
break;
case "illum":
ExpectExactly(pieces, 1, "illum");
_currentDefinition.IlluminationModel = ParseInt(pieces[1], "illum");
break;
case "d": // "Dissolve", or opacity
ExpectExactly(pieces, 1, "d");
_currentDefinition.Opacity = ParseFloat(pieces[1], "d");
break;
case "tr": // Transparency
ExpectExactly(pieces, 1, "Tr");
_currentDefinition.Opacity = 1 - ParseFloat(pieces[1], "Tr");
break;
case "ns":
ExpectExactly(pieces, 1, "Ns");
_currentDefinition.SpecularExponent = ParseFloat(pieces[1], "Ns");
break;
case "sharpness":
ExpectExactly(pieces, 1, "sharpness");
_currentDefinition.Sharpness = ParseFloat(pieces[1], "sharpness");
break;
case "ni": // "Index of refraction"
ExpectExactly(pieces, 1, "Ni");
_currentDefinition.OpticalDensity = ParseFloat(pieces[1], "Ni");
break;
case "map_ka":
ExpectExactly(pieces, 1, "map_ka");
_currentDefinition.AmbientTexture = pieces[1];
break;
case "map_kd":
ExpectExactly(pieces, 1, "map_kd");
_currentDefinition.DiffuseTexture = pieces[1];
break;
case "map_bump":
case "bump":
ExpectExactly(pieces, 1, "map_bump");
_currentDefinition.BumpMap = pieces[1];
break;
case "map_d":
ExpectExactly(pieces, 1, "map_d");
_currentDefinition.AlphaMap = pieces[1];
break;
case "map_ns":
ExpectExactly(pieces, 1, "map_ns");
_currentDefinition.SpecularColorTexture = pieces[1];
break;
default:
throw new ObjParseException(
string.Format("An unsupported line-type specifier, '{0}', was used on line {1}, \"{2}\"",
pieces[0],
_currentLine,
_currentLineText));
}
}