public static ObjFile FromStream(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
var obj = new ObjFile();
var context = new ObjFileReaderContext(obj);
foreach (var values in LineReader.Read(stream))
{
switch (values[0].ToLowerInvariant())
{
case "v":
{
if (values.Length < 4)
{
throw new InvalidDataException("A v statement must specify at least 3 values.");
}
float x = float.Parse(values[1], CultureInfo.InvariantCulture);
float y = float.Parse(values[2], CultureInfo.InvariantCulture);
float z = float.Parse(values[3], CultureInfo.InvariantCulture);
float w = 1.0f;
bool hasColor = false;
float r = 0.0f;
float g = 0.0f;
float b = 0.0f;
float a = 1.0f;
if (values.Length == 4 || values.Length == 5)
{
if (values.Length == 5)
{
w = float.Parse(values[4], CultureInfo.InvariantCulture);
}
}
else if (values.Length == 7 || values.Length == 8)
{
hasColor = true;
r = float.Parse(values[4], CultureInfo.InvariantCulture);
g = float.Parse(values[5], CultureInfo.InvariantCulture);
b = float.Parse(values[6], CultureInfo.InvariantCulture);
if (values.Length == 8)
{
a = float.Parse(values[7], CultureInfo.InvariantCulture);
}
}
else
{
throw new InvalidDataException("A v statement has too many values.");
}
var v = new ObjVertex();
v.Position = new ObjVector4(x, y, z, w);
if (hasColor)
{
v.Color = new ObjVector4(r, g, b, a);
}
obj.Vertices.Add(v);
break;
}
case "vp":
{
if (values.Length < 2)
{
throw new InvalidDataException("A vp statement must specify at least 1 value.");
}
var v = new ObjVector3();
v.X = float.Parse(values[1], CultureInfo.InvariantCulture);
if (values.Length == 2)
{
v.Y = 0.0f;
v.Z = 1.0f;
}
else if (values.Length == 3)
{
v.Y = float.Parse(values[2], CultureInfo.InvariantCulture);
v.Z = 1.0f;
}
else if (values.Length == 4)
{
v.Y = float.Parse(values[2], CultureInfo.InvariantCulture);
v.Z = float.Parse(values[3], CultureInfo.InvariantCulture);
}
else
{
throw new InvalidDataException("A vp statement has too many values.");
}
obj.ParameterSpaceVertices.Add(v);
break;
}
case "vn":
{
if (values.Length < 4)
{
throw new InvalidDataException("A vn statement must specify 3 values.");
}
if (values.Length != 4)
{
throw new InvalidDataException("A vn statement has too many values.");
}
var v = new ObjVector3();
v.X = float.Parse(values[1], CultureInfo.InvariantCulture);
v.Y = float.Parse(values[2], CultureInfo.InvariantCulture);
v.Z = float.Parse(values[3], CultureInfo.InvariantCulture);
obj.VertexNormals.Add(v);
break;
}
case "vt":
{
if (values.Length < 2)
{
throw new InvalidDataException("A vt statement must specify at least 1 value.");
}
var v = new ObjVector3();
v.X = float.Parse(values[1], CultureInfo.InvariantCulture);
if (values.Length == 2)
{
v.Y = 0.0f;
v.Z = 0.0f;
}
else if (values.Length == 3)
{
v.Y = float.Parse(values[2], CultureInfo.InvariantCulture);
v.Z = 0.0f;
}
else if (values.Length == 4)
{
v.Y = float.Parse(values[2], CultureInfo.InvariantCulture);
v.Z = float.Parse(values[3], CultureInfo.InvariantCulture);
}
else
{
throw new InvalidDataException("A vt statement has too many values.");
}
obj.TextureVertices.Add(v);
break;
}
case "cstype":
ObjFileReader.ParseFreeFormType(context, values);
break;
case "deg":
if (values.Length < 2)
{
throw new InvalidDataException("A deg statement must specify at least 1 value.");
}
if (values.Length == 2)
{
context.DegreeU = int.Parse(values[1]);
context.DegreeV = 0;
}
else if (values.Length == 3)
{
context.DegreeU = int.Parse(values[1], CultureInfo.InvariantCulture);
context.DegreeV = int.Parse(values[2], CultureInfo.InvariantCulture);
}
else
{
throw new InvalidDataException("A deg statement has too many values.");
}
break;
case "bmat":
{
if (values.Length < 2)
{
throw new InvalidDataException("A bmat statement must specify a direction.");
}
int d;
if (string.Equals(values[1], "u", StringComparison.OrdinalIgnoreCase))
{
d = 1;
}
else if (string.Equals(values[1], "v", StringComparison.OrdinalIgnoreCase))
{
d = 2;
}
else
{
throw new InvalidDataException("A bmat statement has an unknown direction.");
}
int count = (context.DegreeU + 1) * (context.DegreeV + 1);
if (values.Length != count + 2)
{
throw new InvalidDataException("A bmat statement has too many or too few values.");
}
var matrix = new float[count];
for (int i = 0; i < count; i++)
{
matrix[i] = float.Parse(values[2 + i], CultureInfo.InvariantCulture);
}
switch (d)
{
case 1:
context.BasicMatrixU = matrix;
break;
case 2:
context.BasicMatrixV = matrix;
break;
}
break;
}
case "step":
if (values.Length < 2)
{
throw new InvalidDataException("A step statement must specify at least 1 value.");
}
if (values.Length == 2)
{
context.StepU = float.Parse(values[1], CultureInfo.InvariantCulture);
context.StepV = 1.0f;
}
else if (values.Length == 3)
{
context.StepU = float.Parse(values[1], CultureInfo.InvariantCulture);
context.StepV = float.Parse(values[2], CultureInfo.InvariantCulture);
}
else
{
throw new InvalidDataException("A step statement has too many values.");
}
break;
case "p":
{
if (values.Length < 2)
{
throw new InvalidDataException("A p statement must specify at least 1 value.");
}
var point = new ObjPoint();
for (int i = 1; i < values.Length; i++)
{
point.Vertices.Add(ObjFileReader.ParseTriplet(obj, values[i]));
}
context.ApplyAttributesToElement(point);
context.ApplyAttributesToPolygonalElement(point);
obj.Points.Add(point);
foreach (var group in context.GetCurrentGroups())
{
group.Points.Add(point);
}
break;
}
case "l":
{
if (values.Length < 3)
{
throw new InvalidDataException("A l statement must specify at least 2 values.");
}
var line = new ObjLine();
for (int i = 1; i < values.Length; i++)
{
line.Vertices.Add(ObjFileReader.ParseTriplet(obj, values[i]));
}
context.ApplyAttributesToElement(line);
context.ApplyAttributesToPolygonalElement(line);
obj.Lines.Add(line);
foreach (var group in context.GetCurrentGroups())
{
group.Lines.Add(line);
}
break;
}
case "f":
case "fo":
{
if (values.Length < 4)
{
throw new InvalidDataException("A f statement must specify at least 3 values.");
}
var face = new ObjFace();
for (int i = 1; i < values.Length; i++)
{
face.Vertices.Add(ObjFileReader.ParseTriplet(obj, values[i]));
}
context.ApplyAttributesToElement(face);
context.ApplyAttributesToPolygonalElement(face);
obj.Faces.Add(face);
foreach (var group in context.GetCurrentGroups())
{
group.Faces.Add(face);
}
break;
}
case "curv":
{
if (values.Length < 5)
{
throw new InvalidDataException("A curv statement must specify at least 4 values.");
}
var curve = new ObjCurve();
curve.StartParameter = float.Parse(values[1], CultureInfo.InvariantCulture);
curve.EndParameter = float.Parse(values[2], CultureInfo.InvariantCulture);
for (int i = 3; i < values.Length; i++)
{
int v = int.Parse(values[i], CultureInfo.InvariantCulture);
if (v == 0)
{
throw new InvalidDataException("A curv statement contains an invalid vertex index.");
}
if (v < 0)
{
v = obj.Vertices.Count + v + 1;
}
if (v <= 0 || v > obj.Vertices.Count)
{
throw new IndexOutOfRangeException();
}
curve.Vertices.Add(v);
}
context.ApplyAttributesToElement(curve);
context.ApplyAttributesToFreeFormElement(curve);
context.CurrentFreeFormElement = curve;
obj.Curves.Add(curve);
foreach (var group in context.GetCurrentGroups())
{
group.Curves.Add(curve);
}
break;
}
case "curv2":
{
if (values.Length < 3)
{
throw new InvalidDataException("A curv2 statement must specify at least 2 values.");
}
var curve = new ObjCurve2D();
for (int i = 1; i < values.Length; i++)
{
int vp = int.Parse(values[i], CultureInfo.InvariantCulture);
if (vp == 0)
{
throw new InvalidDataException("A curv2 statement contains an invalid parameter space vertex index.");
}
if (vp < 0)
{
vp = obj.ParameterSpaceVertices.Count + vp + 1;
}
if (vp <= 0 || vp > obj.ParameterSpaceVertices.Count)
{
throw new IndexOutOfRangeException();
}
curve.ParameterSpaceVertices.Add(vp);
}
context.ApplyAttributesToElement(curve);
context.ApplyAttributesToFreeFormElement(curve);
context.CurrentFreeFormElement = curve;
obj.Curves2D.Add(curve);
foreach (var group in context.GetCurrentGroups())
{
group.Curves2D.Add(curve);
}
break;
}
case "surf":
{
if (values.Length < 6)
{
throw new InvalidDataException("A surf statement must specify at least 5 values.");
}
var surface = new ObjSurface();
surface.StartParameterU = float.Parse(values[1], CultureInfo.InvariantCulture);
surface.EndParameterU = float.Parse(values[2], CultureInfo.InvariantCulture);
surface.StartParameterV = float.Parse(values[3], CultureInfo.InvariantCulture);
surface.EndParameterV = float.Parse(values[4], CultureInfo.InvariantCulture);
for (int i = 5; i < values.Length; i++)
{
surface.Vertices.Add(ObjFileReader.ParseTriplet(obj, values[i]));
}
context.ApplyAttributesToElement(surface);
context.ApplyAttributesToFreeFormElement(surface);
context.CurrentFreeFormElement = surface;
obj.Surfaces.Add(surface);
foreach (var group in context.GetCurrentGroups())
{
group.Surfaces.Add(surface);
}
break;
}
case "parm":
if (context.CurrentFreeFormElement == null)
{
break;
}
if (values.Length < 4)
{
throw new InvalidDataException("A parm statement must specify at least 3 values.");
}
IList <float> parameters;
if (string.Equals(values[1], "u", StringComparison.OrdinalIgnoreCase))
{
parameters = context.CurrentFreeFormElement.ParametersU;
}
else if (string.Equals(values[1], "v", StringComparison.OrdinalIgnoreCase))
{
parameters = context.CurrentFreeFormElement.ParametersV;
}
else
{
throw new InvalidDataException("A parm statement has an unknown direction.");
}
for (int i = 2; i < values.Length; i++)
{
parameters.Add(float.Parse(values[i], CultureInfo.InvariantCulture));
}
break;
case "trim":
if (context.CurrentFreeFormElement == null)
{
break;
}
ObjFileReader.ParseCurveIndex(context.CurrentFreeFormElement.OuterTrimmingCurves, obj, values);
break;
case "hole":
if (context.CurrentFreeFormElement == null)
{
break;
}
ObjFileReader.ParseCurveIndex(context.CurrentFreeFormElement.InnerTrimmingCurves, obj, values);
break;
case "scrv":
if (context.CurrentFreeFormElement == null)
{
break;
}
ObjFileReader.ParseCurveIndex(context.CurrentFreeFormElement.SequenceCurves, obj, values);
break;
case "sp":
if (context.CurrentFreeFormElement == null)
{
break;
}
if (values.Length < 2)
{
throw new InvalidDataException("A sp statement must specify at least 1 value.");
}
for (int i = 1; i < values.Length; i++)
{
int vp = int.Parse(values[i], CultureInfo.InvariantCulture);
if (vp == 0)
{
throw new InvalidDataException("A sp statement contains an invalid parameter space vertex index.");
}
if (vp < 0)
{
vp = obj.ParameterSpaceVertices.Count + vp + 1;
}
if (vp <= 0 || vp > obj.ParameterSpaceVertices.Count)
{
throw new IndexOutOfRangeException();
}
context.CurrentFreeFormElement.SpecialPoints.Add(vp);
}
break;
case "end":
context.CurrentFreeFormElement = null;
break;
case "con":
ObjFileReader.ParseSurfaceConnection(obj, values);
break;
case "g":
ObjFileReader.ParseGroupName(values, context);
break;
case "s":
if (values.Length < 2)
{
throw new InvalidDataException("A s statement must specify a value.");
}
if (values.Length != 2)
{
throw new InvalidDataException("A s statement has too many values.");
}
if (string.Equals(values[1], "off", StringComparison.OrdinalIgnoreCase))
{
context.SmoothingGroupNumber = 0;
}
else
{
context.SmoothingGroupNumber = int.Parse(values[1], CultureInfo.InvariantCulture);
}
break;
case "mg":
if (values.Length < 2)
{
throw new InvalidDataException("A mg statement must specify a value.");
}
if (string.Equals(values[1], "off", StringComparison.OrdinalIgnoreCase))
{
context.MergingGroupNumber = 0;
}
else
{
context.MergingGroupNumber = int.Parse(values[1], CultureInfo.InvariantCulture);
}
if (context.MergingGroupNumber == 0)
{
if (values.Length > 3)
{
throw new InvalidDataException("A mg statement has too many values.");
}
}
else
{
if (values.Length != 3)
{
throw new InvalidDataException("A mg statement has too many or too few values.");
}
float res = float.Parse(values[2], CultureInfo.InvariantCulture);
obj.MergingGroupResolutions[context.MergingGroupNumber] = res;
}
break;
case "o":
if (values.Length == 1)
{
context.ObjectName = null;
break;
}
if (values.Length != 2)
{
throw new InvalidDataException("A o statement has too many values.");
}
context.ObjectName = values[1];
break;
case "bevel":
if (values.Length < 2)
{
throw new InvalidDataException("A bevel statement must specify a name.");
}
if (values.Length != 2)
{
throw new InvalidDataException("A bevel statement has too many values.");
}
if (string.Equals(values[1], "on", StringComparison.OrdinalIgnoreCase))
{
context.IsBevelInterpolationEnabled = true;
}
else if (string.Equals(values[1], "off", StringComparison.OrdinalIgnoreCase))
{
context.IsBevelInterpolationEnabled = false;
}
else
{
throw new InvalidDataException("A bevel statement must specify on or off.");
}
break;
case "c_interp":
if (values.Length < 2)
{
throw new InvalidDataException("A c_interp statement must specify a name.");
}
if (values.Length != 2)
{
throw new InvalidDataException("A c_interp statement has too many values.");
}
if (string.Equals(values[1], "on", StringComparison.OrdinalIgnoreCase))
{
context.IsColorInterpolationEnabled = true;
}
else if (string.Equals(values[1], "off", StringComparison.OrdinalIgnoreCase))
{
context.IsColorInterpolationEnabled = false;
}
else
{
throw new InvalidDataException("A c_interp statement must specify on or off.");
}
break;
case "d_interp":
if (values.Length < 2)
{
throw new InvalidDataException("A d_interp statement must specify a name.");
}
if (values.Length != 2)
{
throw new InvalidDataException("A d_interp statement has too many values.");
}
if (string.Equals(values[1], "on", StringComparison.OrdinalIgnoreCase))
{
context.IsDissolveInterpolationEnabled = true;
}
else if (string.Equals(values[1], "off", StringComparison.OrdinalIgnoreCase))
{
context.IsDissolveInterpolationEnabled = false;
}
else
{
throw new InvalidDataException("A d_interp statement must specify on or off.");
}
break;
case "lod":
if (values.Length < 2)
{
throw new InvalidDataException("A lod statement must specify a value.");
}
if (values.Length != 2)
{
throw new InvalidDataException("A lod statement has too many values.");
}
context.LevelOfDetail = int.Parse(values[1], CultureInfo.InvariantCulture);
break;
case "maplib":
if (values.Length < 2)
{
throw new InvalidDataException("A maplib statement must specify a file name.");
}
for (int i = 1; i < values.Length; i++)
{
if (!Path.HasExtension(values[i]))
{
throw new InvalidDataException("A file name must have an extension.");
}
obj.MapLibraries.Add(values[i]);
}
break;
case "mtllib":
if (values.Length < 2)
{
throw new InvalidDataException("A mtllib statement must specify a file name.");
}
for (int i = 1; i < values.Length; i++)
{
if (!Path.HasExtension(values[i]))
{
throw new InvalidDataException("A file name must have an extension.");
}
obj.MaterialLibraries.Add(values[i]);
}
break;
case "usemap":
if (values.Length < 2)
{
throw new InvalidDataException("A usemap statement must specify a value.");
}
if (values.Length != 2)
{
throw new InvalidDataException("A usemap statement has too many values.");
}
if (string.Equals(values[1], "off", StringComparison.OrdinalIgnoreCase))
{
context.MapName = null;
}
else
{
context.MapName = values[1];
}
break;
case "usemtl":
if (values.Length < 2)
{
throw new InvalidDataException("A usemtl statement must specify a value.");
}
if (values.Length != 2)
{
throw new InvalidDataException("A usemtl statement has too many values.");
}
if (string.Equals(values[1], "off", StringComparison.OrdinalIgnoreCase))
{
context.MaterialName = null;
}
else
{
context.MaterialName = values[1];
}
break;
case "shadow_obj":
if (values.Length < 2)
{
throw new InvalidDataException("A shadow_obj statement must specify a file name.");
}
if (values.Length != 2)
{
throw new InvalidDataException("A shadow_obj statement has too many values.");
}
if (!Path.HasExtension(values[1]))
{
throw new InvalidDataException("A file name must have an extension.");
}
obj.ShadowObjectFileName = values[1];
break;
case "trace_obj":
if (values.Length < 2)
{
throw new InvalidDataException("A trace_obj statement must specify a file name.");
}
if (values.Length != 2)
{
throw new InvalidDataException("A trace_obj statement has too many values.");
}
if (!Path.HasExtension(values[1]))
{
throw new InvalidDataException("A file name must have an extension.");
}
obj.TraceObjectFileName = values[1];
break;
case "ctech":
context.CurveApproximationTechnique = ObjFileReader.ParseApproximationTechnique(values);
break;
case "stech":
context.SurfaceApproximationTechnique = ObjFileReader.ParseApproximationTechnique(values);
break;
case "bsp":
case "bzp":
case "cdc":
case "cdp":
case "res":
throw new NotImplementedException(string.Concat(values[0], " statement have been replaced by free-form geometry statements."));
}
}
return(obj);
}
private static ObjMaterialMap ParseMaterialMap(string statement, string[] values)
{
var map = new ObjMaterialMap();
for (int index = 0; index < values.Length;)
{
index++;
if (values.Length - index < 1)
{
throw new InvalidDataException(string.Concat("A ", statement, " statement must specify a filename."));
}
switch (values[index].ToLowerInvariant())
{
case "-type":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -type option must specify a value."));
}
index++;
break;
case "-blenu":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -blenu option must specify a value."));
}
if (string.Equals(values[index + 1], "on", StringComparison.OrdinalIgnoreCase))
{
map.IsHorizontalBlendingEnabled = true;
}
else if (string.Equals(values[index + 1], "off", StringComparison.OrdinalIgnoreCase))
{
map.IsHorizontalBlendingEnabled = false;
}
else
{
throw new InvalidDataException(string.Concat("A ", statement, " -blenu option must specify on or off."));
}
index++;
break;
case "-blenv":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -blenv option must specify a value."));
}
if (string.Equals(values[index + 1], "on", StringComparison.OrdinalIgnoreCase))
{
map.IsVerticalBlendingEnabled = true;
}
else if (string.Equals(values[index + 1], "off", StringComparison.OrdinalIgnoreCase))
{
map.IsVerticalBlendingEnabled = false;
}
else
{
throw new InvalidDataException(string.Concat("A ", statement, " -blenv option must specify on or off."));
}
index++;
break;
case "-bm":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -bm option must specify a value."));
}
map.BumpMultiplier = float.Parse(values[index + 1], CultureInfo.InvariantCulture);
index++;
break;
case "-boost":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -boost option must specify a value."));
}
map.Boost = float.Parse(values[index + 1], CultureInfo.InvariantCulture);
index++;
break;
case "-cc":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -cc option must specify a value."));
}
if (string.Equals(values[index + 1], "on", StringComparison.OrdinalIgnoreCase))
{
map.IsColorCorrectionEnabled = true;
}
else if (string.Equals(values[index + 1], "off", StringComparison.OrdinalIgnoreCase))
{
map.IsColorCorrectionEnabled = false;
}
else
{
throw new InvalidDataException(string.Concat("A ", statement, " -cc option must specify on or off."));
}
index++;
break;
case "-clamp":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -clamp option must specify a value."));
}
if (string.Equals(values[index + 1], "on", StringComparison.OrdinalIgnoreCase))
{
map.IsClampingEnabled = true;
}
else if (string.Equals(values[index + 1], "off", StringComparison.OrdinalIgnoreCase))
{
map.IsClampingEnabled = false;
}
else
{
throw new InvalidDataException(string.Concat("A ", statement, " -clamp option must specify on or off."));
}
index++;
break;
case "-imfchan":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -imfchan option must specify a value."));
}
switch (values[index + 1].ToLowerInvariant())
{
case "r":
map.ScalarChannel = ObjMapChannel.Red;
break;
case "g":
map.ScalarChannel = ObjMapChannel.Green;
break;
case "b":
map.ScalarChannel = ObjMapChannel.Blue;
break;
case "m":
map.ScalarChannel = ObjMapChannel.Matte;
break;
case "l":
map.ScalarChannel = ObjMapChannel.Luminance;
break;
case "z":
map.ScalarChannel = ObjMapChannel.Depth;
break;
default:
throw new InvalidDataException(string.Concat("A ", statement, " -imfchan option must specify a value in (r, g, b, m, l, z)."));
}
index++;
break;
case "-mm":
if (values.Length - index < 3)
{
throw new InvalidDataException(string.Concat("A ", statement, " -mm option must specify a base and a gain."));
}
map.ModifierBase = float.Parse(values[index + 1], CultureInfo.InvariantCulture);
map.ModifierGain = float.Parse(values[index + 2], CultureInfo.InvariantCulture);
index += 2;
break;
case "-o":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -o option must specify at least 2 values."));
}
var offset = new ObjVector3();
offset.X = float.Parse(values[index + 1], CultureInfo.InvariantCulture);
if (values.Length - index > 3)
{
offset.Y = float.Parse(values[index + 2], CultureInfo.InvariantCulture);
if (values.Length - index > 4)
{
offset.Z = float.Parse(values[index + 3], CultureInfo.InvariantCulture);
index++;
}
index++;
}
index++;
map.Offset = offset;
break;
case "-s":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -s option must specify at least 2 values."));
}
var scale = new ObjVector3(1.0f, 1.0f, 1.0f);
scale.X = float.Parse(values[index + 1], CultureInfo.InvariantCulture);
if (values.Length - index > 3)
{
scale.Y = float.Parse(values[index + 2], CultureInfo.InvariantCulture);
if (values.Length - index > 4)
{
scale.Z = float.Parse(values[index + 3], CultureInfo.InvariantCulture);
index++;
}
index++;
}
index++;
map.Scale = scale;
break;
case "-t":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -t option must specify at least 2 values."));
}
var turbulence = new ObjVector3();
turbulence.X = float.Parse(values[index + 1], CultureInfo.InvariantCulture);
if (values.Length - index > 3)
{
turbulence.Y = float.Parse(values[index + 2], CultureInfo.InvariantCulture);
if (values.Length - index > 4)
{
turbulence.Z = float.Parse(values[index + 3], CultureInfo.InvariantCulture);
index++;
}
index++;
}
index++;
map.Turbulence = turbulence;
break;
case "-texres":
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " -texres option must specify a value."));
}
map.TextureResolution = int.Parse(values[index + 1], CultureInfo.InvariantCulture);
index++;
break;
default:
if (!Path.HasExtension(values[index]))
{
throw new InvalidDataException("A filename must have an extension.");
}
map.FileName = values[index];
index++;
if (index != values.Length)
{
throw new InvalidDataException(string.Concat("A ", statement, " has too many values."));
}
break;
}
}
return(map);
}
private static void WriteMap(string statement, ObjMaterialMap map, StreamWriter stream)
{
// TODO: write tests
stream.Write(statement);
if (!map.IsHorizontalBlendingEnabled)
{
stream.Write(" -blenu off");
}
if (!map.IsVerticalBlendingEnabled)
{
stream.Write(" -blenv off");
}
if (map.BumpMultiplier != 0.0f)
{
stream.Write(" -bm ");
stream.Write(map.BumpMultiplier.ToString("F6", CultureInfo.InvariantCulture));
}
if (map.Boost != 0.0f)
{
stream.Write(" -boost ");
stream.Write(map.Boost.ToString("F6", CultureInfo.InvariantCulture));
}
if (map.IsColorCorrectionEnabled)
{
stream.Write(" -cc on");
}
if (map.IsClampingEnabled)
{
stream.Write(" -clamp on");
}
if (map.ScalarChannel != ObjMapChannel.Luminance)
{
stream.Write(" -imfchan ");
switch (map.ScalarChannel)
{
case ObjMapChannel.Red:
stream.Write("r");
break;
case ObjMapChannel.Green:
stream.Write("g");
break;
case ObjMapChannel.Blue:
stream.Write("b");
break;
case ObjMapChannel.Matte:
stream.Write("m");
break;
case ObjMapChannel.Depth:
stream.Write("z");
break;
default:
stream.Write("l");
break;
}
}
if (map.ModifierBase != 0.0f || map.ModifierGain != 1.0f)
{
stream.Write(" -mm ");
stream.Write(map.ModifierBase.ToString("F6", CultureInfo.InvariantCulture));
stream.Write(' ');
stream.Write(map.ModifierGain.ToString("F6", CultureInfo.InvariantCulture));
}
ObjVector3 offset = map.Offset;
if (offset.X != 0.0f || offset.Y != 0.0f || offset.Z != 0.0f)
{
stream.Write(" -o ");
stream.Write(offset.X.ToString("F6", CultureInfo.InvariantCulture));
stream.Write(' ');
stream.Write(offset.Y.ToString("F6", CultureInfo.InvariantCulture));
stream.Write(' ');
stream.Write(offset.Z.ToString("F6", CultureInfo.InvariantCulture));
}
ObjVector3 scale = map.Scale;
if (scale.X != 1.0f || scale.Y != 1.0f || scale.Z != 1.0f)
{
stream.Write(" -s ");
stream.Write(scale.X.ToString("F6", CultureInfo.InvariantCulture));
stream.Write(' ');
stream.Write(scale.Y.ToString("F6", CultureInfo.InvariantCulture));
stream.Write(' ');
stream.Write(scale.Z.ToString("F6", CultureInfo.InvariantCulture));
}
ObjVector3 turbulence = map.Turbulence;
if (turbulence.X != 0.0f || turbulence.Y != 0.0f || turbulence.Z != 0.0f)
{
stream.Write(" -t ");
stream.Write(turbulence.X.ToString("F6", CultureInfo.InvariantCulture));
stream.Write(' ');
stream.Write(turbulence.Y.ToString("F6", CultureInfo.InvariantCulture));
stream.Write(' ');
stream.Write(turbulence.Z.ToString("F6", CultureInfo.InvariantCulture));
}
if (map.TextureResolution != 0)
{
stream.Write(" -texres ");
stream.Write(map.TextureResolution);
}
stream.Write(' ');
stream.WriteLine(map.FileName);
}
private static ObjMaterialColor ParseMaterialColor(string statement, string[] values)
{
if (values.Length < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " statement must specify a color."));
}
var color = new ObjMaterialColor();
int index = 1;
switch (values[1].ToLowerInvariant())
{
case "spectral":
index++;
if (values.Length - index < 1)
{
throw new InvalidDataException(string.Concat("A ", statement, " spectral statement must specify a file name."));
}
if (!Path.HasExtension(values[index]))
{
throw new InvalidDataException("A filename must have an extension.");
}
color.SpectralFileName = values[index];
index++;
if (values.Length > index)
{
color.SpectralFactor = float.Parse(values[index], CultureInfo.InvariantCulture);
index++;
}
break;
case "xyz":
index++;
if (values.Length - index < 1)
{
throw new InvalidDataException(string.Concat("A ", statement, " xyz statement must specify a color."));
}
color.UseXYZColorSpace = true;
var xyz = new ObjVector3();
xyz.X = float.Parse(values[index], CultureInfo.InvariantCulture);
index++;
if (values.Length > index)
{
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " xyz statement must specify a XYZ color."));
}
xyz.Y = float.Parse(values[index], CultureInfo.InvariantCulture);
xyz.Z = float.Parse(values[index + 1], CultureInfo.InvariantCulture);
index += 2;
}
else
{
xyz.Y = xyz.X;
xyz.Z = xyz.X;
}
color.Color = xyz;
break;
default:
var rgb = new ObjVector3();
rgb.X = float.Parse(values[index], CultureInfo.InvariantCulture);
index++;
if (values.Length > index)
{
if (values.Length - index < 2)
{
throw new InvalidDataException(string.Concat("A ", statement, " statement must specify a RGB color."));
}
rgb.Y = float.Parse(values[index], CultureInfo.InvariantCulture);
rgb.Z = float.Parse(values[index + 1], CultureInfo.InvariantCulture);
index += 2;
}
else
{
rgb.Y = rgb.X;
rgb.Z = rgb.X;
}
color.Color = rgb;
break;
}
if (index != values.Length)
{
throw new InvalidDataException(string.Concat("A ", statement, " statement has too many values."));
}
return(color);
}
