public void MapOptions_Turbulence3_Valid()
{
var mtl = new ObjMaterialFile();
var material = new ObjMaterial("a");
mtl.Materials.Add(material);
material.AmbientMap = new ObjMaterialMap("b.b");
material.AmbientMap.Turbulence = new ObjVector3(2.0f, 3.0f, 4.0f);
string text = WriteMtl(mtl);
string expected =
@"newmtl a
illum 2
d 1.000000
Ns 0.000000
sharpness 60
Ni 1.000000
map_aat off
map_Ka -t 2.000000 3.000000 4.000000 b.b
";
AssertExtensions.TextEqual(expected, text);
}
public void MapOptions_TextureResolution_Valid()
{
var mtl = new ObjMaterialFile();
var material = new ObjMaterial("a");
mtl.Materials.Add(material);
material.AmbientMap = new ObjMaterialMap("b.b");
material.AmbientMap.TextureResolution = 2;
string text = WriteMtl(mtl);
string expected =
@"newmtl a
illum 2
d 1.000000
Ns 0.000000
sharpness 60
Ni 1.000000
map_aat off
map_Ka -texres 2 b.b
";
AssertExtensions.TextEqual(expected, text);
}
public void MapOptions_Clamping_Valid()
{
var mtl = new ObjMaterialFile();
var material = new ObjMaterial("a");
mtl.Materials.Add(material);
material.AmbientMap = new ObjMaterialMap("b.b");
material.AmbientMap.IsClampingEnabled = true;
string text = WriteMtl(mtl);
string expected =
@"newmtl a
illum 2
d 1.000000
Ns 0.000000
sharpness 60
Ni 1.000000
map_aat off
map_Ka -clamp on b.b
";
AssertExtensions.TextEqual(expected, text);
}
public void MapOptions_ScalarChannel_Valid(string value, ObjMapChannel channel)
{
var mtl = new ObjMaterialFile();
var material = new ObjMaterial("a");
mtl.Materials.Add(material);
material.AmbientMap = new ObjMaterialMap("b.b");
material.AmbientMap.ScalarChannel = channel;
string text = WriteMtl(mtl);
string expected =
@"newmtl a
illum 2
d 1.000000
Ns 0.000000
sharpness 60
Ni 1.000000
map_aat off
map_Ka -imfchan " + value + @" b.b
";
AssertExtensions.TextEqual(expected, text);
}
public void MapOptions_BumpMultiplier_Valid()
{
var mtl = new ObjMaterialFile();
var material = new ObjMaterial("a");
mtl.Materials.Add(material);
material.AmbientMap = new ObjMaterialMap("b.b");
material.AmbientMap.BumpMultiplier = 2.0f;
string text = WriteMtl(mtl);
string expected =
@"newmtl a
illum 2
d 1.000000
Ns 0.000000
sharpness 60
Ni 1.000000
map_aat off
map_Ka -bm 2.000000 b.b
";
AssertExtensions.TextEqual(expected, text);
}
public void Write_NullStream_Throws()
{
var mtl = new ObjMaterialFile();
Assert.Throws <ArgumentNullException>("stream", () => mtl.WriteTo((Stream)null));
}
public void Read_NullStream_Throws()
{
Assert.Throws <ArgumentNullException>("stream", () => ObjMaterialFile.FromStream(null));
}
public void Read_NullFile_Throws()
{
Assert.Throws <ArgumentNullException>("path", () => ObjMaterialFile.FromFile(null));
}
private static void WriteObj(Int32Rect[][] tiles, BitmapSource[][][] imagedata, ConvertOptions options)
{
var positions = new Dictionary <Vector3, int>();
var normals = new Dictionary <Vector3, int>();
var uvs = new Dictionary <Vector2, int>();
var normal = new Vector3(0, 0, 1);
var xcount = (options.ImageWidth.Value + options.TileWidth - 1) / options.TileWidth;
var ycount = (options.ImageHeight.Value + options.TileHeight - 1) / options.TileHeight;
var folder = Path.GetDirectoryName(options.InputFileName);
var filename = Path.GetFileNameWithoutExtension(options.InputFileName);
var mtl = new ObjMaterialFile();
var obj = new ObjFile();
obj.MaterialLibraries.Add($"{filename}.mtl");
for (var y = 0; y < ycount; y++)
{
for (var x = 0; x < xcount; x++)
{
var tile = tiles[y][x];
var texture = imagedata[0][y][x];
var encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(texture));
var matname = $"{filename}_{y:D3}_{x:D3}";
using (var outfile = File.Open(Path.Combine(folder, $"{matname}.png"), FileMode.Create, FileAccess.Write, FileShare.None))
{
encoder.Save(outfile);
}
var material = new ObjMaterial(matname);
material.DiffuseMap = new ObjMaterialMap($"{matname}.png");
mtl.Materials.Add(material);
var face = new ObjFace();
face.MaterialName = matname;
face.Vertices.Add(new ObjTriplet(
positions.AddUniqueIndex(new Vector3(tile.X, -(tile.Y), 0)),
uvs.AddUniqueIndex(new Vector2(0, (float)tile.Height / texture.PixelHeight)),
normals.AddUniqueIndex(normal)
));
face.Vertices.Add(new ObjTriplet(
positions.AddUniqueIndex(new Vector3(tile.X + tile.Width, -(tile.Y), 0)),
uvs.AddUniqueIndex(new Vector2((float)tile.Width / texture.PixelWidth, (float)tile.Height / texture.PixelHeight)),
normals.AddUniqueIndex(normal)
));
face.Vertices.Add(new ObjTriplet(
positions.AddUniqueIndex(new Vector3(tile.X + tile.Width, -(tile.Y + tile.Height), 0)),
uvs.AddUniqueIndex(new Vector2((float)tile.Width / texture.PixelWidth, 0)),
normals.AddUniqueIndex(normal)
));
face.Vertices.Add(new ObjTriplet(
positions.AddUniqueIndex(new Vector3(tile.X, -(tile.Y + tile.Height), 0)),
uvs.AddUniqueIndex(new Vector2(0, 0)),
normals.AddUniqueIndex(normal)
));
obj.Faces.Add(face);
}
}
(from x in positions orderby x.Value select x.Key).ToList().ForEach(x => obj.Vertices.Add(x.ToObjVertex()));
(from x in normals orderby x.Value select x.Key).ToList().ForEach(x => obj.VertexNormals.Add(x.ToObjVector3()));
(from x in uvs orderby x.Value select x.Key).ToList().ForEach(x => obj.TextureVertices.Add(x.ToObjVector3()));
mtl.WriteTo(Path.Combine(folder, $"{filename}.mtl"));
obj.WriteTo(Path.Combine(folder, $"{filename}.obj"));
}
