public void ExportMeshes(string path)
{
TestContext.CurrentContext.AttachGltfValidatorLinks();
path = TestFiles
.GetSampleModelsPaths()
.FirstOrDefault(item => item.Contains(path));
// load the glTF model
var srcModel = ModelRoot.Load(path, Validation.ValidationMode.TryFix);
Assert.NotNull(srcModel);
srcModel.AttachToCurrentTest("GearBoxAssy.plotly");
// convert it to a SceneBuilder so we can manipulate it:
var srcScene = srcModel.DefaultScene.ToSceneBuilder();
// export all the individual meshes to OBJ:
for (int i = 0; i < srcScene.Instances.Count; ++i)
{
var inst = srcScene.Instances[i].Content;
// scan for meshes:
if (inst.Content is MeshContent mesh)
{
var newScene = new SceneBuilder();
newScene.AddRigidMesh(mesh.Mesh, inst.GetPoseWorldMatrix());
newScene.AttachToCurrentTest($"result_{i}.obj");
}
}
}
public void LoadSuzanneTest()
{
var path1 = TestFiles.GetSampleModelsPaths().First(item => item.EndsWith("Suzanne.gltf"));
var suzanne1 = ModelRoot.Load(path1, ValidationMode.TryFix);
var suzanne1Mem = suzanne1.LogicalBuffers.Sum(item => item.Content.Length);
// direct save-load
var path2 = suzanne1
.AttachToCurrentTest("suzanne2.glb");
var suzanne2 = ModelRoot.Load(path2);
var suzanne2Mem = suzanne1.LogicalBuffers.Sum(item => item.Content.Length);
Assert.AreEqual(suzanne1Mem, suzanne2Mem);
Assert.AreEqual(suzanne1.LogicalMeshes.Count, suzanne2.LogicalMeshes.Count);
// scenebuilder roundtrip
var path3 = Scenes.SceneBuilder
.CreateFrom(suzanne1.DefaultScene)
.ToGltf2()
.AttachToCurrentTest("suzanne.glb");
var suzanne3 = ModelRoot.Load(path3);
var suzanne3Mem = suzanne1.LogicalBuffers.Sum(item => item.Content.Length);
Assert.AreEqual(suzanne1Mem, suzanne3Mem);
Assert.AreEqual(suzanne1.LogicalMeshes.Count, suzanne3.LogicalMeshes.Count);
}
public void TestMemoryIsolation()
{
// this tests checks if, after creating a template from a scene,
// there's any reference from the template to the source model
// that prevents the source model to be garbage collected.
(SceneTemplate, WeakReference <Schema2.ModelRoot>) scopedLoad()
{
var path = TestFiles.GetSampleModelsPaths()
.FirstOrDefault(item => item.Contains("BrainStem.glb"));
var result = LoadModelTemplate(path);
GC.Collect();
GC.WaitForFullGCComplete();
return(result);
}
var result = scopedLoad();
GC.Collect();
GC.WaitForFullGCComplete();
Assert.IsFalse(result.Item2.TryGetTarget(out Schema2.ModelRoot model));
Assert.Null(model);
}
public void LoadModelsWithAnimations(string path)
{
TestContext.CurrentContext.AttachShowDirLink();
path = TestFiles
.GetSampleModelsPaths()
.FirstOrDefault(item => item.Contains(path));
var model = ModelRoot.Load(path);
Assert.NotNull(model);
path = System.IO.Path.GetFileNameWithoutExtension(path);
model.AttachToCurrentTest(path + ".glb");
var triangles = model.DefaultScene
.EvaluateTriangles <Geometry.VertexTypes.VertexPosition, Geometry.VertexTypes.VertexEmpty>()
.ToArray();
var anim = model.LogicalAnimations[0];
var duration = anim.Duration;
for (int i = 0; i < 10; ++i)
{
var t = duration * i / 10;
int tt = (int)(t * 1000.0f);
model.AttachToCurrentTest($"{path} at {tt}.obj", anim, t);
}
}
public void LoadModels()
{
foreach (var f in TestFiles.GetSampleModelsPaths())
{
var root = Schema2.ModelRoot.Load(f);
Assert.NotNull(root);
}
}
public void LoadModels()
{
foreach (var f in TestFiles.GetSampleModelsPaths())
{
var root = GltfUtils.LoadModel(f);
Assert.NotNull(root);
}
}
public void LoadBrokenFile()
{
var f = TestFiles.GetSampleModelsPaths().First(item => item.EndsWith(".gltf"));
var json = System.IO.File.ReadAllText(f);
// break the file
json = json.Substring(0, json.Length - 40);
Assert.Throws <Validation.SchemaException>(() => Schema2.ModelRoot.ParseGLTF(json, new Schema2.ReadSettings()));
}
// [TestCase("\\glTF-Quantized\\")] // removed from tests
// [TestCase("\\glTF-pbrSpecularGlossiness\\")] // removed from tests
public void LoadModelsFromKhronosSamples(string section)
{
TestContext.CurrentContext.AttachGltfValidatorLinks();
foreach (var f in TestFiles.GetSampleModelsPaths())
{
if (!f.Contains(section))
{
continue;
}
_LoadModel(f);
}
}
public void TestLoadSparseModel()
{
var path = TestFiles.GetSampleModelsPaths().FirstOrDefault(item => item.Contains("SimpleSparseAccessor.gltf"));
var model = ModelRoot.Load(path);
Assert.NotNull(model);
var primitive = model.LogicalMeshes[0].Primitives[0];
var accessor = primitive.GetVertexAccessor("POSITION");
var basePositions = accessor._GetMemoryAccessor().AsVector3Array();
var positions = accessor.AsVector3Array();
}
public static void TestMeshDecoding()
{
var modelPath = TestFiles.GetSampleModelsPaths()
.FirstOrDefault(item => item.Contains("BrainStem.glb"));
var model = Schema2.ModelRoot.Load(modelPath);
model.AttachToCurrentTest("reference.plotly");
var scene = model.DefaultScene;
var decodedMeshes = scene.LogicalParent.LogicalMeshes.Decode();
var sceneTemplate = SceneTemplate.Create(scene);
var sceneInstance = sceneTemplate.CreateInstance();
var duration = sceneInstance.Armature.AnimationTracks[0].Duration;
sceneInstance.Armature.SetAnimationFrame(0, duration / 2);
IEnumerable <(Vector3, Vector3, Vector3, int)> evaluateTriangles(DrawableInstance inst)
{
var mesh = decodedMeshes[inst.Template.LogicalMeshIndex];
foreach (var prim in mesh.Primitives)
{
foreach (var(idxA, idxB, idxC) in prim.TriangleIndices)
{
var posA = prim.GetPosition(idxA, inst.Transform);
var posB = prim.GetPosition(idxB, inst.Transform);
var posC = prim.GetPosition(idxC, inst.Transform);
yield return(posA, posB, posC, 0xb0b0b0);
}
}
}
var worldTriangles = sceneInstance.SelectMany(item => evaluateTriangles(item));
var scenePlot = new PlotlyScene();
scenePlot.AppendTriangles(worldTriangles, c => c);
scenePlot
.ToHtml()
.AttachToCurrentTest("result.html", (content, finfo) => System.IO.File.WriteAllText(finfo.FullName, content));
}
public void LoadGeneratedTangetsTest(string fileName)
{
var path = TestFiles.GetSampleModelsPaths().FirstOrDefault(item => item.EndsWith(fileName));
var model = ModelRoot.Load(path);
var mesh = model.DefaultScene
.EvaluateTriangles <Geometry.VertexTypes.VertexPositionNormalTangent, Geometry.VertexTypes.VertexTexture1>()
.ToMeshBuilder();
var editableScene = new Scenes.SceneBuilder();
editableScene.AddRigidMesh(mesh, Matrix4x4.Identity);
model.AttachToCurrentTest("original.glb");
editableScene.ToGltf2().AttachToCurrentTest("WithTangents.glb");
}
public void LoadModelWithMorphTargets()
{
var path = TestFiles
.GetSampleModelsPaths()
.FirstOrDefault(item => item.Contains("MorphPrimitivesTest.glb"));
var model = ModelRoot.Load(path);
Assert.NotNull(model);
var triangles = model.DefaultScene
.EvaluateTriangles <Geometry.VertexTypes.VertexPosition, Geometry.VertexTypes.VertexEmpty>(null, null, 0)
.ToArray();
model.AttachToCurrentTest(System.IO.Path.ChangeExtension(System.IO.Path.GetFileName(path), ".obj"));
model.AttachToCurrentTest(System.IO.Path.ChangeExtension(System.IO.Path.GetFileName(path), ".glb"));
}
public void TestLoadUnlitModel()
{
var f = TestFiles.GetSampleModelsPaths()
.FirstOrDefault(item => item.EndsWith(@"UnlitTest\glTF-Binary\UnlitTest.glb"));
var model = ModelRoot.Load(f);
Assert.NotNull(model);
Assert.IsTrue(model.LogicalMaterials[0].Unlit);
// do a model roundtrip
var modelBis = ModelRoot.ParseGLB(model.WriteGLB());
Assert.NotNull(modelBis);
Assert.IsTrue(modelBis.LogicalMaterials[0].Unlit);
}
public void LoadMultiUVTexture()
{
var path = TestFiles
.GetSampleModelsPaths()
.FirstOrDefault(item => item.Contains("TextureTransformMultiTest.glb"));
var model = ModelRoot.Load(path);
Assert.NotNull(model);
var materials = model.LogicalMaterials;
var normalTest0Mat = materials.FirstOrDefault(item => item.Name == "NormalTest0Mat");
var normalTest0Mat_normal = normalTest0Mat.FindChannel("Normal").Value;
var normalTest0Mat_normal_xform = normalTest0Mat_normal.TextureTransform;
Assert.NotNull(normalTest0Mat_normal_xform);
}
public void TestLoadSampleModels(string section)
{
TestContext.CurrentContext.AttachShowDirLink();
TestContext.CurrentContext.AttachGltfValidatorLink();
foreach (var f in TestFiles.GetSampleModelsPaths())
{
if (!f.Contains(section))
{
continue;
}
var perf = System.Diagnostics.Stopwatch.StartNew();
var model = ModelRoot.Load(f);
Assert.NotNull(model);
var perf_load = perf.ElapsedMilliseconds;
// do a model clone and compare it
_AssertAreEqual(model, model.DeepClone());
var perf_clone = perf.ElapsedMilliseconds;
// check extensions used
if (!model.ExtensionsUsed.Contains("EXT_lights_image_based"))
{
var detectedExtensions = model.RetrieveUsedExtensions().ToArray();
CollectionAssert.AreEquivalent(model.ExtensionsUsed, detectedExtensions);
}
// evaluate and save all the triangles to a Wavefront Object
model.AttachToCurrentTest(System.IO.Path.ChangeExtension(System.IO.Path.GetFileName(f), ".obj"));
var perf_wavefront = perf.ElapsedMilliseconds;
model.AttachToCurrentTest(System.IO.Path.ChangeExtension(System.IO.Path.GetFileName(f), ".glb"));
var perf_glb = perf.ElapsedMilliseconds;
TestContext.Progress.WriteLine($"processed {f.ToShortDisplayPath()} - Load:{perf_load}ms Clone:{perf_clone}ms S.obj:{perf_wavefront}ms S.glb:{perf_glb}ms");
}
}
public static void TestMeshDecodingBounds()
{
var modelPath = TestFiles.GetSampleModelsPaths()
.FirstOrDefault(item => item.Contains("BrainStem.glb"));
var model = Schema2.ModelRoot.Load(modelPath);
var(center, radius) = model.DefaultScene.EvaluateBoundingSphere(0.25f);
var sceneTemplate = SceneTemplate.Create(model.DefaultScene);
var sceneInstance = sceneTemplate.CreateInstance();
sceneInstance.Armature.SetAnimationFrame(0, 0.1f);
var vertices = sceneInstance.GetWorldVertices(model.LogicalMeshes.Decode()).ToList();
foreach (var p in vertices)
{
var d = (p - center).Length();
Assert.LessOrEqual(d, radius + 0.0001f);
}
}
public void LoadModelsWithExtensions(string filePath)
{
TestContext.CurrentContext.AttachGltfValidatorLinks();
filePath = TestFiles
.GetSampleModelsPaths()
.FirstOrDefault(item => item.EndsWith(filePath));
var model = ModelRoot.Load(filePath);
Assert.NotNull(model);
// do a model clone and compare it
_AssertAreEqual(model, model.DeepClone());
// evaluate and save all the triangles to a Wavefront Object
filePath = System.IO.Path.GetFileNameWithoutExtension(filePath);
model.AttachToCurrentTest(filePath + "_wf.obj");
model.AttachToCurrentTest(filePath + ".glb");
model.AttachToCurrentTest(filePath + ".gltf");
}
public void LoadAndSaveToMemory()
{
var path = TestFiles.GetSampleModelsPaths().FirstOrDefault(item => item.EndsWith("Avocado.glb"));
var model = ModelRoot.Load(path);
// model.LogicalImages[0].TransferToSatelliteFile(); // TODO
// we will use this dictionary as our in-memory model container.
var dictionary = new Dictionary <string, ArraySegment <Byte> >();
// write to dictionary
var wcontext = WriteContext.CreateFromDictionary(dictionary);
model.Save("avocado.gltf", wcontext);
Assert.IsTrue(dictionary.ContainsKey("avocado.gltf"));
Assert.IsTrue(dictionary.ContainsKey("avocado.bin"));
// read back from dictionary
var rcontext = ReadContext.CreateFromDictionary(dictionary);
var model2 = ModelRoot.Load("avocado.gltf", rcontext);
// TODO: verify
}
public void TestLoadSpecialCaseModels(string filePath)
{
TestContext.CurrentContext.AttachShowDirLink();
TestContext.CurrentContext.AttachGltfValidatorLink();
var f = TestFiles.GetSampleModelsPaths()
.FirstOrDefault(item => item.EndsWith(filePath));
var model = ModelRoot.Load(f);
Assert.NotNull(model);
// evaluate and save all the triangles to a Wavefront Object
model.AttachToCurrentTest(System.IO.Path.ChangeExtension(System.IO.Path.GetFileName(f), ".obj"));
model.AttachToCurrentTest(System.IO.Path.ChangeExtension(System.IO.Path.GetFileName(f), ".glb"));
model.AttachToCurrentTest(System.IO.Path.ChangeExtension(System.IO.Path.GetFileName(f), ".gltf"));
// do a model roundtrip
var bytes = model.WriteGLB();
var modelBis = ModelRoot.ParseGLB(bytes);
// clone
var cloned = model.DeepClone();
}
public void TestRoundTrip(string path)
{
TestContext.CurrentContext.AttachGltfValidatorLinks();
path = TestFiles
.GetSampleModelsPaths()
.FirstOrDefault(item => item.Contains(path));
var srcModel = Schema2.ModelRoot.Load(path, Validation.ValidationMode.TryFix);
Assert.NotNull(srcModel);
// perform roundtrip
var srcScene = Toolkit.ToSceneBuilder(srcModel.DefaultScene);
var rowModel = srcScene.ToGltf2();
var settings = SceneBuilderSchema2Settings.Default;
settings.UseStridedBuffers = false;
var colModel = srcScene.ToGltf2(settings);
var rowScene = Toolkit.ToSceneBuilder(rowModel.DefaultScene);
var colScene = Toolkit.ToSceneBuilder(colModel.DefaultScene);
// compare files
var srcTris = srcModel.DefaultScene.EvaluateTriangles().ToList();
var rowTris = rowModel.DefaultScene.EvaluateTriangles().ToList();
var colTris = colModel.DefaultScene.EvaluateTriangles().ToList();
Assert.AreEqual(srcTris.Count, rowTris.Count);
Assert.AreEqual(srcTris.Count, colTris.Count);
var srcRep = Reporting.ModelReport.CreateReportFrom(srcModel);
var rowRep = Reporting.ModelReport.CreateReportFrom(rowModel);
var colRep = Reporting.ModelReport.CreateReportFrom(colModel);
Assert.AreEqual(srcRep.NumTriangles, rowRep.NumTriangles);
NumericsAssert.AreEqual(srcRep.Bounds.Min, rowRep.Bounds.Min, 0.0001f);
NumericsAssert.AreEqual(srcRep.Bounds.Max, rowRep.Bounds.Max, 0.0001f);
// save file
path = System.IO.Path.GetFileNameWithoutExtension(path);
srcModel.AttachToCurrentTest(path + "_src" + ".plotly");
srcModel.AttachToCurrentTest(path + "_src" + ".glb");
rowModel.AttachToCurrentTest(path + "_row" + ".glb");
colModel.AttachToCurrentTest(path + "_col" + ".glb");
srcModel.AttachToCurrentTest(path + "_src" + ".gltf");
rowModel.AttachToCurrentTest(path + "_row" + ".gltf");
colModel.AttachToCurrentTest(path + "_col" + ".gltf");
srcModel.AttachToCurrentTest(path + "_src" + ".obj");
rowModel.AttachToCurrentTest(path + "_row" + ".obj");
colModel.AttachToCurrentTest(path + "_col" + ".obj");
if (srcModel.LogicalAnimations.Count > 0)
{
srcModel.AttachToCurrentTest(path + "_src_at01" + ".obj", srcModel.LogicalAnimations[0], 0.1f);
if (rowModel.LogicalAnimations.Count > 0)
{
rowModel.AttachToCurrentTest(path + "_row_at01" + ".obj", rowModel.LogicalAnimations[0], 0.1f);
}
}
}
public void LoadAnimatedMorphCube()
{
TestContext.CurrentContext.AttachShowDirLink();
var path = TestFiles
.GetSampleModelsPaths()
.FirstOrDefault(item => item.Contains("AnimatedMorphCube.glb"));
var model = ModelRoot.Load(path);
Assert.NotNull(model);
var anim = model.LogicalAnimations[0];
var node = model.LogicalNodes[0];
var acc_master = node.Mesh.Primitives[0].GetVertexAccessor("POSITION");
var acc_morph0 = node.Mesh.Primitives[0].GetMorphTargetAccessors(0)["POSITION"];
var acc_morph1 = node.Mesh.Primitives[0].GetMorphTargetAccessors(1)["POSITION"];
var pos_master = acc_master.AsVector3Array();
var pos_morph0 = acc_morph0.AsVector3Array();
var pos_morph1 = acc_morph1.AsVector3Array();
// pos_master
var instance = Runtime.SceneTemplate
.Create(model.DefaultScene)
.CreateInstance();
var pvrt = node.Mesh.Primitives[0].GetVertexColumns();
for (float t = 0; t < 5; t += 0.25f)
{
instance.Armature.SetAnimationFrame(anim.LogicalIndex, t);
var nodexform = instance.GetDrawableInstance(0).Transform;
TestContext.WriteLine($"Animation at {t}");
var curves = node.GetCurveSamplers(anim);
if (t < anim.Duration)
{
var mw = curves.GetMorphingSampler <float[]>()
.CreateCurveSampler()
.GetPoint(t);
TestContext.WriteLine($" Morph Weights: {mw[0]} {mw[1]}");
}
var msw = curves.GetMorphingSampler <Transforms.SparseWeight8>()
.CreateCurveSampler()
.GetPoint(t);
TestContext.WriteLine($" Morph Sparse : {msw.Weight0} {msw.Weight1}");
var triangles = model.DefaultScene
.EvaluateTriangles <Geometry.VertexTypes.VertexPosition, Geometry.VertexTypes.VertexEmpty>(null, anim, t)
.ToList();
var vertices = triangles
.SelectMany(item => new[] { item.A.Position, item.B.Position, item.C.Position })
.Distinct()
.ToList();
foreach (var v in vertices)
{
TestContext.WriteLine($"{v}");
}
TestContext.WriteLine();
}
}