public void FACE_TRIPLE_NO_TEXTURE_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();//
parser.Read(utf8.GetBytes("f 1//1 2//2 3//3 4//4".ToCharArray()).AsSpan());
//v/vt/vn
var v = parser.GeometryCache.Groups.First().Vertices;
Assert.AreEqual(v.Count, 6);
var array = v.ToArray();
Assert.AreEqual(array[0].V, 0);
Assert.AreEqual(array[1].V, 1);
Assert.AreEqual(array[2].V, 2);
Assert.AreEqual(array[3].V, 0);
Assert.AreEqual(array[4].V, 2);
Assert.AreEqual(array[5].V, 3);
Assert.AreEqual(array[0].VN, 0);
Assert.AreEqual(array[1].VN, 1);
Assert.AreEqual(array[2].VN, 2);
Assert.AreEqual(array[3].VN, 0);
Assert.AreEqual(array[4].VN, 2);
Assert.AreEqual(array[5].VN, 3);
Assert.AreEqual(array[0].VT, -2);
Assert.AreEqual(array[1].VT, -2);
Assert.AreEqual(array[2].VT, -2);
Assert.AreEqual(array[3].VT, -2);
Assert.AreEqual(array[4].VT, -2);
Assert.AreEqual(array[5].VT, -2);
}
static void Main(string[] args)
{
Console.WriteLine("Start");
var file = new FileInfo(
"Resources/i-robot obj.obj"
);
var sw = new Stopwatch();
var tests = 10;
long total = 0;
sw.Restart();
using (var reader = new FileFormats.MemoryMappedFileReader(file)) {
var span = reader.ReadSpan();
sw.Stop();
var readTime = sw.ElapsedMilliseconds;
Console.WriteLine($"Read span: {readTime} ms");
while (tests-- > 0)
{
if (span.Length != 113569792)
{
Console.WriteLine($"ERROR: Not all data was readed");
break;
}
var parser = new Utf8ByteOBJParser();
sw.Restart();
parser.Read(span);
sw.Stop();
var builder = new UnitedGroupsBulder(parser.GeometryCache);
var mesh = builder.Build().Single();
if (mesh.Indices.Count != 4692648 || mesh.Positions.Count != 786586)
{
Console.WriteLine($"ERROR: Not all data was readed");
break;
}
var milsec = sw.ElapsedMilliseconds;
total += milsec;
}
}
Console.WriteLine($"Total: {total / 10} ms");
// DEBUG
//1558 ms = 100 MB file
//1487 ms
//1542 ms + Normals
//1281 - refactor face
//1920 - add OBJVertex
//1530 - refactor OBJVertex
Console.WriteLine($"Finished");
Console.ReadKey();
}
public void MATERIAL_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes(@"mtllib i-robot obj.mtl"
.ToCharArray())
.AsSpan());
Assert.AreEqual(parser.MtlFileName, "obj.mtl");
}
public void COMMENTS_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes("# vn 0.0771 -0.5505 0.8313"
.ToCharArray())
.AsSpan());
var mesh = parser.GeometryCache;
Assert.AreEqual(mesh.NormalsCache.Count, 0);
}
public void TRIANGLE_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes("f 1 2 3".ToCharArray()).AsSpan());
var mesh = parser.GeometryCache.Groups.First();
Assert.AreEqual(mesh.Vertices.Count, 3);
var array = mesh.Vertices.ToArray();
Assert.AreEqual(array[0].V, 0);
Assert.AreEqual(array[1].V, 1);
Assert.AreEqual(array[2].V, 2);
}
public void SIMPLE_VERTEX_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes("v -0.911915 123456.851241 -0.000001".ToCharArray()).AsSpan());
var mesh = parser.GeometryCache;
var array = mesh.PositionsCache;
Assert.AreEqual(mesh.PositionsCache.Count, 1);
Assert.AreEqual(array[0].X, -0.911915f);
Assert.AreEqual(array[0].Y, 123456.851241f);
Assert.AreEqual(array[0].Z, -0.000001f);
}
public void TEXTURE_COORDINATE_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes("v 0 0 0\nvt 0.1234 0.7492 0.0000\nf 1 1 1"
.ToCharArray())
.AsSpan());
var mesh = parser.GeometryCache;
Assert.AreEqual(mesh.TextureCoorsCache.Count, 1);
var array = mesh.TextureCoorsCache;
Assert.AreEqual(array[0].X, 0.1234f);
Assert.AreEqual(array[0].Y, 1 - 0.7492f, 0.0001);
}
public void NORMAL_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes("v 0 0 0\nvn 0.0771 -0.5505 0.8313\nf 1 1 1"
.ToCharArray())
.AsSpan());
var mesh = parser.GeometryCache;
Assert.AreEqual(mesh.NormalsCache.Count, 1);
var array = mesh.NormalsCache;
Assert.AreEqual(array[0].X, 0.0771f);
Assert.AreEqual(array[0].Y, -0.5505f);
Assert.AreEqual(array[0].Z, 0.8313f);
}
public void FACE_TRIPLE_SLASH_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes("f 1/2/2 2/5/5 3/6/6 4/3/3".ToCharArray()).AsSpan());
var v = parser.GeometryCache.Groups.First().Vertices;
Assert.AreEqual(v.Count, 6);
var array = v.ToArray();
Assert.AreEqual(array[0].V, 0);
Assert.AreEqual(array[1].V, 1);
Assert.AreEqual(array[2].V, 2);
Assert.AreEqual(array[3].V, 0);
Assert.AreEqual(array[4].V, 2);
Assert.AreEqual(array[5].V, 3);
}
public void GROUPS_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes(@"g A
g A B
g AB C"
.ToCharArray())
.AsSpan());
Assert.AreEqual(parser.GeometryCache.Groups.Count, 4);
//[0] default group, not interesting
var array = parser.GeometryCache.Groups.ToArray();
Assert.AreEqual(array[1].Name, "A");
Assert.AreEqual(array[2].Name, "A B");
Assert.AreEqual(array[3].Name, "AB C");
}
public void LF_CRLF_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes("v 0.1000 9.021 -5.465 126.1 127.2 128.3\nvn 0.0771 -0.5505 0.8313\r\nvt 0.1234 0.7492 0.0000\nf 1 1 1"
.ToCharArray())
.AsSpan());
var mesh = parser.GeometryCache;
Assert.AreEqual(mesh.PositionsCache.Count, 1);
Assert.AreEqual(mesh.NormalsCache.Count, 1);
Assert.AreEqual(mesh.TextureCoorsCache.Count, 1);
Assert.AreEqual(mesh.ColorsCache.Count, 1);
var pos = mesh.PositionsCache.ToArray();
Assert.AreEqual(pos[0].X, 0.1f);
Assert.AreEqual(pos[0].Y, 9.021f);
Assert.AreEqual(pos[0].Z, -5.465, 0.0001);
var colors = mesh.ColorsCache.ToArray();
Assert.AreEqual(colors[0].X, 126.1f);
Assert.AreEqual(colors[0].Y, 127.2f);
Assert.AreEqual(colors[0].Z, 128.3f);
var tex = mesh.TextureCoorsCache.ToArray();
Assert.AreEqual(tex[0].X, 0.1234f);
Assert.AreEqual(tex[0].Y, 1 - 0.7492f, 0.0001);
var morm = mesh.NormalsCache.ToArray();
Assert.AreEqual(morm[0].X, 0.0771f);
Assert.AreEqual(morm[0].Y, -0.5505f);
Assert.AreEqual(morm[0].Z, 0.8313f);
}
public void VERTEX_COLOR_TEST()
{
var utf8 = Encoding.UTF8;
var parser = new Utf8ByteOBJParser();
parser.Read(utf8.GetBytes("v 0.1000 9.021 -5.465 126.1 127.2 128.3"
.ToCharArray())
.AsSpan());
var mesh = parser.GeometryCache;
Assert.AreEqual(mesh.PositionsCache.Count, 1);
Assert.AreEqual(mesh.ColorsCache.Count, 1);
var array = mesh.PositionsCache;
Assert.AreEqual(array[0].X, 0.1f);
Assert.AreEqual(array[0].Y, 9.021f);
Assert.AreEqual(array[0].Z, -5.465, 0.0001);
array = mesh.ColorsCache;
Assert.AreEqual(array[0].X, 126.1f);
Assert.AreEqual(array[0].Y, 127.2f);
Assert.AreEqual(array[0].Z, 128.3f);
}
static void Import(string file, out IEnumerable <IFileGeometry3D> meshes, out FileInfo material, out AxisAlignedBox box)
{
box = AxisAlignedBox.Zero;
material = null;
var f = new FileInfo(file);
switch (f.Extension.ToLower())
{
case ".stl":
meshes = G3Readers.ReadStl(f);
box = AxisAlignedBox.CreateFrom(meshes.First().Positions);
break;
case ".obj":
var parser = new Utf8ByteOBJParser();
using (var reader = new FileFormats.MemoryMappedFileReader(f)) {
parser.Read(reader.ReadSpan());
}
try {
material = parser.HasMTL ?
new FileInfo(parser.GetMaterialFilePath(f.Directory, f.Directory)) : null;
} catch { }
//var builder = new UnitedGroupsBulder(parser.GeometryCache);
var builder = new GroupGeoBuilder(parser.GeometryCache);
meshes = builder.Build();
box = AxisAlignedBox.CreateFrom(parser.GeometryCache.PositionsCache.AsReadOnly());
break;
default:
throw new NotSupportedException($"'{f.Extension}' is not suppported format.");
}
}