public void WriteB3dmWithBatchTest()
{
// arrange
var buildingGlb = File.ReadAllBytes(@"testfixtures/with_batch.glb");
var batchTableJson = File.ReadAllText(@"testfixtures/BatchTableJsonExpected.json");
var b3dmBytesExpected = File.OpenRead(@"testfixtures/with_batch.b3dm");
var b3dmExpected = B3dmReader.ReadB3dm(b3dmBytesExpected);
var errors = b3dmExpected.B3dmHeader.Validate();
Assert.IsTrue(errors.Count > 0);
var b3dm = new B3dm(buildingGlb);
b3dm.FeatureTableJson = b3dmExpected.FeatureTableJson;
b3dm.BatchTableJson = b3dmExpected.BatchTableJson;
b3dm.FeatureTableBinary = b3dmExpected.FeatureTableBinary;
b3dm.BatchTableBinary = b3dmExpected.BatchTableBinary;
// act
var result = "with_batch.b3dm";
var bytes = b3dm.ToBytes();
File.WriteAllBytes(result, bytes);
var b3dmActual = B3dmReader.ReadB3dm(File.OpenRead(result));
// Assert
var errorsActual = b3dmActual.B3dmHeader.Validate();
Assert.IsTrue(errorsActual.Count == 0);
Assert.IsTrue(b3dmActual.B3dmHeader.Magic == b3dmExpected.B3dmHeader.Magic);
Assert.IsTrue(b3dmActual.B3dmHeader.Version == b3dmExpected.B3dmHeader.Version);
Assert.IsTrue(b3dmActual.B3dmHeader.FeatureTableJsonByteLength == b3dmExpected.B3dmHeader.FeatureTableJsonByteLength);
}
public void WriteB3dmWithBatchTest()
{
// arrange
var buildingGlb = File.ReadAllBytes(@"testfixtures/with_batch.glb");
var batchTableJson = File.ReadAllText(@"testfixtures/BatchTableJsonExpected.json");
var b3dmBytesExpected = File.OpenRead(@"testfixtures/with_batch.b3dm");
var b3dmExpected = B3dmReader.ReadB3dm(b3dmBytesExpected);
var b3dm = new B3dm(buildingGlb);
b3dm.FeatureTableJson = b3dmExpected.FeatureTableJson;
b3dm.BatchTableJson = b3dmExpected.BatchTableJson;
b3dm.FeatureTableBinary = b3dmExpected.FeatureTableBinary;
b3dm.BatchTableBinary = b3dmExpected.BatchTableBinary;
// act
var result = "with_batch.b3dm";
var newB3dm = B3dmWriter.WriteB3dm(result, b3dm);
var b3dmActual = B3dmReader.ReadB3dm(File.OpenRead(newB3dm));
// Assert
Assert.IsTrue(b3dmActual.B3dmHeader.Magic == b3dmExpected.B3dmHeader.Magic);
Assert.IsTrue(b3dmActual.B3dmHeader.Version == b3dmExpected.B3dmHeader.Version);
Assert.IsTrue(b3dmActual.B3dmHeader.FeatureTableJsonByteLength == b3dmExpected.B3dmHeader.FeatureTableJsonByteLength);
Assert.IsTrue(b3dmActual.B3dmHeader.BatchTableJsonByteLength == b3dmExpected.B3dmHeader.BatchTableJsonByteLength);
Assert.IsTrue(b3dmActual.B3dmHeader.ByteLength == b3dmExpected.B3dmHeader.ByteLength);
var fiResult = new FileInfo(result);
var fiExpected = new FileInfo(@"testfixtures/with_batch.b3dm");
Assert.IsTrue(fiResult.Length == fiExpected.Length);
Assert.IsTrue(FilesAreEqual(fiResult, fiExpected));
}
public void ReadFirstCompositeTest()
{
// arrange
// source: https://github.com/CesiumGS/cesium/tree/master/Specs/Data/Cesium3DTiles/Composite/Composite
var cmptfile = File.OpenRead(@"testfixtures/composite.cmpt");
Assert.IsTrue(cmptfile != null);
// act. This cmpt contains a batched model and an instanced model
var cmpt = CmptReader.Read(cmptfile);
// assert
Assert.IsTrue(cmpt != null);
Assert.IsTrue(cmpt.CmptHeader.Magic == expectedMagicHeader);
Assert.IsTrue(cmpt.CmptHeader.Version == expectedVersionHeader);
Assert.IsTrue(cmpt.CmptHeader.ByteLength == 13472); // The length of the entire Composite tile, including this header and each inner tile, in bytes.
Assert.IsTrue(cmpt.CmptHeader.TilesLength == 2);
Assert.IsTrue(cmpt.Tiles.Count() == 2);
Assert.IsTrue(cmpt.Magics.ToArray()[0] == "b3dm");
Assert.IsTrue(cmpt.Magics.ToArray()[1] == "i3dm");
var b3dm = B3dmReader.ReadB3dm(new MemoryStream(cmpt.Tiles.ToArray()[0]));
Assert.IsTrue(b3dm.FeatureTableJson == "{\"BATCH_LENGTH\":10,\"RTC_CENTER\":[1215012.8988049095,-4736313.0423059845,4081604.3368623317]}");
Assert.IsTrue(b3dm.GlbData != null);
var i3dm = I3dmReader.Read(new MemoryStream(cmpt.Tiles.ToArray()[1]));
Assert.IsTrue(i3dm.Positions.Count == 25);
}
static void Unpack(UnpackOptions o)
{
Console.WriteLine($"Action: Unpack");
Console.WriteLine($"Input: {o.Input}");
var f = File.OpenRead(o.Input);
var b3dm = B3dmReader.ReadB3dm(f);
Console.WriteLine("b3dm version: " + b3dm.B3dmHeader.Version);
var glbfile = (o.Output == string.Empty ? Path.GetFileNameWithoutExtension(o.Input) + ".glb" : o.Output);
var batchTableJsonFile = (o.Output == string.Empty ? Path.GetFileNameWithoutExtension(o.Input) + ".batchtable.json" : o.Output);
var featureTableJsonFile = (o.Output == string.Empty ? Path.GetFileNameWithoutExtension(o.Input) + ".featuretable.json" : o.Output);
if (File.Exists(glbfile) && !o.Force)
{
Console.WriteLine($"File {glbfile} already exists. Specify -f or --force to overwrite existing files.");
}
else
{
File.WriteAllBytes(glbfile, b3dm.GlbData);
Console.WriteLine($"Glb created: {glbfile}");
if (b3dm.BatchTableJson != String.Empty)
{
File.WriteAllText(batchTableJsonFile, b3dm.BatchTableJson);
Console.WriteLine($"BatchTable json file created: {batchTableJsonFile}");
}
if (b3dm.FeatureTableJson != String.Empty)
{
File.WriteAllText(featureTableJsonFile, b3dm.FeatureTableJson);
Console.WriteLine($"FeatureTable json file created: {featureTableJsonFile}");
}
}
}
static void Main(string[] args)
{
Console.WriteLine("Sample code for unpacking a b3dm to glb and glTF/bin file");
var inputfile = @"testfixtures/building.b3dm";
var outputfile = Path.GetFileNameWithoutExtension(inputfile) + ".glb";
var f = File.OpenRead(inputfile);
var b3dm = B3dmReader.ReadB3dm(f);
Console.WriteLine("b3dm version: " + b3dm.B3dmHeader.Version);
var stream = new MemoryStream(b3dm.GlbData);
var gltf = Interface.LoadModel(stream);
Console.WriteLine("glTF asset generator: " + gltf.Asset.Generator);
Console.WriteLine("glTF version: " + gltf.Asset.Version);
var model = gltf.SerializeModel();
Console.WriteLine("glTF model: " + model);
var bufferBytes = gltf.Buffers[0].ByteLength;
Console.WriteLine("Buffer bytes: " + bufferBytes);
File.WriteAllBytes(outputfile, b3dm.GlbData);
Interface.Unpack(outputfile, "testfixtures");
Console.WriteLine("press any key to continue...");
Console.ReadKey();
}
static void Info(InfoOptions o)
{
Console.WriteLine($"Action: Info");
Console.WriteLine("b3dm file: " + o.Input);
var f = File.OpenRead(o.Input);
var b3dm = B3dmReader.ReadB3dm(f);
Console.WriteLine("b3dm header version: " + b3dm.B3dmHeader.Version);
Console.WriteLine("b3dm header magic: " + b3dm.B3dmHeader.Magic);
Console.WriteLine("b3dm header bytelength: " + b3dm.B3dmHeader.ByteLength);
Console.WriteLine("b3dm header featuretablejson length: " + b3dm.B3dmHeader.FeatureTableJsonByteLength);
Console.WriteLine("b3dm header batchtablejson length: " + b3dm.B3dmHeader.BatchTableJsonByteLength);
Console.WriteLine("Batch table json: " + b3dm.BatchTableJson);
Console.WriteLine("Feature table json: " + b3dm.FeatureTableJson);
var stream = new MemoryStream(b3dm.GlbData);
try
{
var gltf = Interface.LoadModel(stream);
Console.WriteLine("glTF model is loaded");
Console.WriteLine("glTF generator: " + gltf.Asset.Generator);
Console.WriteLine("glTF version:" + gltf.Asset.Version);
Console.WriteLine("glTF primitives: " + gltf.Meshes[0].Primitives.Length);
if (gltf.ExtensionsUsed != null)
{
Console.WriteLine("glTF extensions used:" + string.Join(',', gltf.ExtensionsUsed));
}
else
{
Console.WriteLine("glTF: no extensions used.");
}
if (gltf.ExtensionsRequired != null)
{
Console.WriteLine("glTF extensions required:" + string.Join(',', gltf.ExtensionsRequired));
}
else
{
Console.WriteLine("glTF: no extensions required.");
}
if (gltf.Meshes[0].Primitives.Length > 0)
{
Console.WriteLine("glTF primitive mode: " + gltf.Meshes[0].Primitives[0].Mode);
Console.WriteLine("glTF primitive attributes: " + String.Join(',', gltf.Meshes[0].Primitives[0].Attributes));
// gltf.Meshes[0].Primitives[0];
// todo: how to get to the vertices?
}
}
catch (InvalidDataException ex)
{
Console.WriteLine("glTF version not supported.");
Console.WriteLine(ex.Message);
}
f.Dispose();
}
public void ReadNederland3DB3dmTest()
{
// arrange
var b3dmfile1 = File.OpenRead(@"testfixtures/nederland3d_6825.b3dm");
// act
var b3dm = B3dmReader.ReadB3dm(b3dmfile1);
// assert
Assert.IsTrue(expectedMagicHeader == b3dm.B3dmHeader.Magic);
Assert.IsTrue(expectedVersionHeader == b3dm.B3dmHeader.Version);
}
public void ReadB3dmWithBatchTest()
{
// arrange
var batchB3dm = File.OpenRead(@"testfixtures/with_batch.b3dm");
var expectedBatchTableJsonText = File.ReadAllText(@"testfixtures/BatchTableJsonExpected.json");
var expectedBatchTableJson = JObject.Parse(expectedBatchTableJsonText);
// act
var b3dm = B3dmReader.ReadB3dm(batchB3dm);
var actualBatchTableJson = JObject.Parse(b3dm.BatchTableJson);
// assert
Assert.IsTrue(b3dm.FeatureTableJson == "{\"BATCH_LENGTH\":12} ");
Assert.AreEqual(expectedBatchTableJson, actualBatchTableJson);
}
public void ReadB3dmTest()
{
// arrange
// act
var b3dm = B3dmReader.ReadB3dm(b3dmfile);
var stream = new MemoryStream(b3dm.GlbData);
var gltf = Interface.LoadModel(stream);
// assert
Assert.IsTrue(expectedMagicHeader == b3dm.B3dmHeader.Magic);
Assert.IsTrue(expectedVersionHeader == b3dm.B3dmHeader.Version);
Assert.IsTrue(b3dm.BatchTableJson.Length >= 0);
Assert.IsTrue(b3dm.GlbData.Length > 0);
}
public void WriteB3dmWithCyrlllicCharacters()
{
// arrange
var buildingGlb = File.ReadAllBytes(@"testfixtures/1.glb");
var b3dm = new B3dm(buildingGlb);
var batchTableJson = File.ReadAllText(@"testfixtures/BatchTableWithCyrillicCharacters.json");
b3dm.BatchTableJson = batchTableJson;
b3dm.FeatureTableJson = "{\"BATCH_LENGTH\":12} ";
// act
var bytes = b3dm.ToBytes();
var b3dmActual = B3dmReader.ReadB3dm(new MemoryStream(bytes));
// Assert
Assert.IsTrue(b3dmActual.B3dmHeader.Validate().Count == 0);
}
static void Main(string[] args)
{
Console.WriteLine("Sample code for unpacking a b3dm to glb and glTF/bin file");
var inputfile = @"testfixtures/662.b3dm";
var outputfile = Path.GetFileNameWithoutExtension(inputfile) + ".glb";
var f = File.OpenRead(inputfile);
var b3dm = B3dmReader.ReadB3dm(f);
Console.WriteLine("b3dm version: " + b3dm.B3dmHeader.Version);
var stream = new MemoryStream(b3dm.GlbData);
var gltf = ModelRoot.ReadGLB(stream, new ReadSettings());
Console.WriteLine("glTF asset generator: " + gltf.Asset.Generator);
Console.WriteLine("glTF version: " + gltf.Asset.Version);
gltf.SaveGLB(outputfile);
Console.WriteLine("press any key to continue...");
Console.ReadKey();
}
public void ReadB3dmTest()
{
// arrange
// act
var b3dm = B3dmReader.ReadB3dm(b3dmfile);
var stream = new MemoryStream(b3dm.GlbData);
var glb = SharpGLTF.Schema2.ModelRoot.ReadGLB(stream);
Assert.IsTrue(glb.Asset.Version.Major == 2.0);
Assert.IsTrue(glb.Asset.Generator == "SharpGLTF 1.0.0-alpha0009");
// assert
Assert.IsTrue(expectedMagicHeader == b3dm.B3dmHeader.Magic);
Assert.IsTrue(expectedVersionHeader == b3dm.B3dmHeader.Version);
Assert.IsTrue(b3dm.BatchTableJson.Length >= 0);
Assert.IsTrue(b3dm.GlbData.Length > 0);
}
static void Unpack(UnpackOptions o)
{
Console.WriteLine($"Action: Unpack");
Console.WriteLine($"Input: {o.Input}");
var f = File.OpenRead(o.Input);
var b3dm = B3dmReader.ReadB3dm(f);
Console.WriteLine("b3dm version: " + b3dm.B3dmHeader.Version);
var stream = new MemoryStream(b3dm.GlbData);
try {
var gltf = Interface.LoadModel(stream);
Console.WriteLine("glTF asset generator: " + gltf.Asset.Generator);
Console.WriteLine("glTF version: " + gltf.Asset.Version);
var bufferBytes = gltf.Buffers[0].ByteLength;
var glbfile = (o.Output == string.Empty?Path.GetFileNameWithoutExtension(o.Input) + ".glb": o.Output);
var batchfile = (o.Output == string.Empty ? Path.GetFileNameWithoutExtension(o.Input) + ".batch" : o.Output);
if (File.Exists(glbfile) && !o.Force)
{
Console.WriteLine($"File {glbfile} already exists. Specify -f or --force to overwrite existing files.");
}
else
{
File.WriteAllBytes(glbfile, b3dm.GlbData);
Console.WriteLine($"Glb created: {glbfile}");
if (b3dm.BatchTableJson != String.Empty)
{
var sb = new StringBuilder();
sb.Append(b3dm.FeatureTableJson);
sb.AppendLine();
sb.Append(b3dm.BatchTableJson);
File.WriteAllText(batchfile, sb.ToString());
Console.WriteLine($"batch file created: {batchfile}");
}
}
}
catch (InvalidDataException ex) {
Console.WriteLine("glTF version not supported.");
Console.WriteLine(ex.Message);
}
}
public void ReadB3dm()
{
var stream = File.OpenRead("1311.b3dm");
B3dmReader.ReadB3dm(stream);
}
static void Info(InfoOptions o)
{
Console.WriteLine($"Action: Info");
Console.WriteLine("b3dm file: " + o.Input);
var f = File.OpenRead(o.Input);
var b3dm = B3dmReader.ReadB3dm(f);
Console.WriteLine("b3dm header version: " + b3dm.B3dmHeader.Version);
Console.WriteLine("b3dm header magic: " + b3dm.B3dmHeader.Magic);
Console.WriteLine("b3dm header bytelength: " + b3dm.B3dmHeader.ByteLength);
Console.WriteLine("b3dm header featuretablejson length: " + b3dm.B3dmHeader.FeatureTableJsonByteLength);
Console.WriteLine("b3dm header batchtablejson length: " + b3dm.B3dmHeader.BatchTableJsonByteLength);
Console.WriteLine("Feature table json: '" + b3dm.FeatureTableJson + "'");
Console.WriteLine("Batch table json: '" + b3dm.BatchTableJson + "'");
var validationErrors = b3dm.B3dmHeader.Validate();
if (validationErrors.Count > 0)
{
Console.WriteLine($"Byte padding rule check: {validationErrors.Count} errors");
foreach (var error in validationErrors)
{
Console.WriteLine(error);
}
}
else
{
Console.WriteLine("Validation check: no errors");
}
var stream = new MemoryStream(b3dm.GlbData);
try
{
var glb = ModelRoot.ReadGLB(stream, new ReadSettings());
Console.WriteLine("glTF model is loaded");
Console.WriteLine("glTF generator: " + glb.Asset.Generator);
Console.WriteLine("glTF version:" + glb.Asset.Version);
Console.WriteLine("glTF primitives: " + glb.LogicalMeshes[0].Primitives.Count);
var triangles = Toolkit.EvaluateTriangles(glb.DefaultScene).ToList();
Console.WriteLine("glTF triangles: " + triangles.Count);
var points = triangles.SelectMany(item => new[] { item.A.GetGeometry().GetPosition(), item.B.GetGeometry().GetPosition(), item.C.GetGeometry().GetPosition() }.Distinct().ToList());
var xmin = (from p in points select p.X).Min();
var xmax = (from p in points select p.X).Max();
var ymin = (from p in points select p.Y).Min();
var ymax = (from p in points select p.Y).Max();
var zmin = (from p in points select p.Z).Min();
var zmax = (from p in points select p.Z).Max();
Console.WriteLine($"Bounding box vertices (xmin, ymin, zmin, xmax, ymax, zmax): {xmin}, {ymin}, {zmin}, {xmax}, {ymax}, {zmax}");
foreach (var primitive in glb.LogicalMeshes[0].Primitives)
{
Console.Write($"Primitive {primitive.LogicalIndex} ({primitive.DrawPrimitiveType}) ");
if (primitive.GetVertexAccessor("_BATCHID") != null)
{
var batchIds = primitive.GetVertexAccessor("_BATCHID").AsScalarArray();
Console.WriteLine($"batch ids (unique): {string.Join(',',batchIds.Distinct())}");
}
else
{
Console.WriteLine($"No _BATCHID attribute found...");
}
}
if (glb.ExtensionsUsed.Count() > 0)
{
Console.WriteLine("glTF extensions used: " + string.Join(',', glb.ExtensionsUsed));
}
else
{
Console.WriteLine("glTF: no extensions used.");
}
if (glb.ExtensionsRequired.Count() > 0)
{
Console.WriteLine("glTF extensions required: " + string.Join(',', glb.ExtensionsRequired));
}
else
{
Console.WriteLine("glTF: no extensions required.");
}
}
catch (SchemaException ex)
{
Console.WriteLine("glTF schema exception");
Console.WriteLine(ex.Message);
}
catch (InvalidDataException ex)
{
Console.WriteLine("Invalid data exception");
Console.WriteLine(ex.Message);
}
catch (LinkException ex)
{
Console.WriteLine("glTF Link exception");
Console.WriteLine(ex.Message);
}
catch (ArgumentException ex)
{
Console.WriteLine(ex.Message);
}
f.Dispose();
}
public void ParseB3dmTileFromStream()
{
var stream = File.OpenRead("1311.b3dm");
B3dmReader.ReadB3dm(stream);
}
