public static void ImportAnimation(ImporterContext ctx)
{
// animation
if (ctx.GLTF.animations != null && ctx.GLTF.animations.Any())
{
var animation = ctx.Root.AddComponent <Animation>();
ctx.AnimationClips = ImportAnimationClips(ctx);
foreach (var clip in ctx.AnimationClips)
{
animation.AddClip(clip, clip.name);
}
if (ctx.AnimationClips.Count > 0)
{
animation.clip = ctx.AnimationClips.First();
}
}
}
public static void ImportAsset(string src, string ext, UnityPath prefabPath)
{
if (!prefabPath.IsUnderAssetsFolder)
{
Debug.LogWarningFormat("out of asset path: {0}", prefabPath);
return;
}
var context = new ImporterContext();
context.Parse(src);
// Extract textures to assets folder
context.ExtractImages(prefabPath);
ImportDelayed(src, prefabPath, context);
}
public static void ImportMenu()
{
var path = EditorUtility.OpenFilePanel("open gltf", "", "gltf,glb,zip");
if (string.IsNullOrEmpty(path))
{
return;
}
if (Application.isPlaying)
{
//
// load into scene
//
var context = new ImporterContext();
context.Load(path);
context.ShowMeshes();
Selection.activeGameObject = context.Root;
}
else
{
//
// save as asset
//
if (path.StartsWithUnityAssetPath())
{
Debug.LogWarningFormat("disallow import from folder under the Assets");
return;
}
var assetPath = EditorUtility.SaveFilePanel("save prefab", "Assets", Path.GetFileNameWithoutExtension(path), "prefab");
if (string.IsNullOrEmpty(path))
{
return;
}
// import as asset
gltfAssetPostprocessor.ImportAsset(path, Path.GetExtension(path).ToLower(), UnityPath.FromFullpath(assetPath));
}
}
public MeshContext ReadMesh(ImporterContext ctx, int meshIndex)
{
var gltfMesh = ctx.GLTF.meshes[meshIndex];
bool sharedMorphTarget = gltfMesh.extras != null && gltfMesh.extras.targetNames.Count > 0;
MeshContext meshContext;
if (sharedMorphTarget)
{
meshContext = _ImportMeshSharingMorphTarget(ctx, gltfMesh);
}
else
{
glTFAttributes lastAttributes = null;
var sharedAttributes = true;
foreach (var prim in gltfMesh.primitives)
{
if (lastAttributes != null && !prim.attributes.Equals(lastAttributes))
{
sharedAttributes = false;
break;
}
lastAttributes = prim.attributes;
}
meshContext = sharedAttributes
? _ImportMeshSharingVertexBuffer(ctx, gltfMesh)
: _ImportMeshIndependentVertexBuffer(ctx, gltfMesh);
}
meshContext.name = gltfMesh.name;
if (string.IsNullOrEmpty(meshContext.name))
{
meshContext.name = string.Format("UniGLTF import#{0}", meshIndex);
}
return(meshContext);
}
//
// fix node's coordinate. z-back to z-forward
//
public static void FixCoordinate(ImporterContext context, List <TransformWithSkin> nodes)
{
var globalTransformMap = nodes.ToDictionary(x => x.Transform, x => new PosRot
{
Position = x.Transform.position,
Rotation = x.Transform.rotation,
});
foreach (var x in context.GLTF.rootnodes)
{
// fix nodes coordinate
// reverse Z in global
var t = nodes[x].Transform;
//t.SetParent(root.transform, false);
foreach (var transform in t.Traverse())
{
var g = globalTransformMap[transform];
transform.position = g.Position.ReverseZ();
transform.rotation = g.Rotation.ReverseZ();
}
}
}
public void UniGLTFSimpleSceneTest()
{
var go = CreateSimpleScene();
var context = new ImporterContext();
try
{
// export
var gltf = new glTF();
string json = null;
using (var exporter = new gltfExporter(gltf))
{
exporter.Prepare(go);
exporter.Export();
// remove empty buffer
gltf.buffers.Clear();
json = gltf.ToJson();
}
// import
context.ParseJson(json, new SimpleStorage(new ArraySegment <byte>()));
//Debug.LogFormat("{0}", context.Json);
context.Load();
AssertAreEqual(go.transform, context.Root.transform);
}
finally
{
//Debug.LogFormat("Destroy, {0}", go.name);
GameObject.DestroyImmediate(go);
context.EditorDestroyRootAndAssets();
}
}
public static List <AnimationClip> ImportAnimationClip(ImporterContext ctx)
{
List <AnimationClip> animasionClips = new List <AnimationClip>();
for (int i = 0; i < ctx.GLTF.animations.Count; ++i)
{
var clip = new AnimationClip();
clip.ClearCurves();
clip.legacy = true;
clip.name = ctx.GLTF.animations[i].name;
if (string.IsNullOrEmpty(clip.name))
{
clip.name = "legacy_" + i;
}
clip.wrapMode = WrapMode.Loop;
var animation = ctx.GLTF.animations[i];
if (string.IsNullOrEmpty(animation.name))
{
animation.name = string.Format("animation:{0}", i);
}
foreach (var channel in animation.channels)
{
var targetTransform = ctx.Nodes[channel.target.node];
var relativePath = targetTransform.RelativePathFrom(ctx.Root.transform);
switch (channel.target.path)
{
case glTFAnimationTarget.PATH_TRANSLATION:
{
var sampler = animation.samplers[channel.sampler];
var input = ctx.GLTF.GetArrayFromAccessor <float>(sampler.input);
var output = ctx.GLTF.GetArrayFromAccessorAsFloat(sampler.output);
AnimationImporter.SetAnimationCurve(
clip,
relativePath,
new string[] { "localPosition.x", "localPosition.y", "localPosition.z" },
input,
output,
sampler.interpolation,
typeof(Transform),
(values, last) =>
{
Vector3 temp = new Vector3(values[0], values[1], values[2]);
return(temp.ReverseZ().ToArray());
}
);
}
break;
case glTFAnimationTarget.PATH_ROTATION:
{
var sampler = animation.samplers[channel.sampler];
var input = ctx.GLTF.GetArrayFromAccessor <float>(sampler.input);
var output = ctx.GLTF.GetArrayFromAccessorAsFloat(sampler.output);
AnimationImporter.SetAnimationCurve(
clip,
relativePath,
new string[] { "localRotation.x", "localRotation.y", "localRotation.z", "localRotation.w" },
input,
output,
sampler.interpolation,
typeof(Transform),
(values, last) =>
{
Quaternion currentQuaternion = new Quaternion(values[0], values[1], values[2], values[3]);
Quaternion lastQuaternion = new Quaternion(last[0], last[1], last[2], last[3]);
return(AnimationImporter.GetShortest(lastQuaternion, currentQuaternion.ReverseZ()).ToArray());
}
);
clip.EnsureQuaternionContinuity();
}
break;
case glTFAnimationTarget.PATH_SCALE:
{
var sampler = animation.samplers[channel.sampler];
var input = ctx.GLTF.GetArrayFromAccessor <float>(sampler.input);
var output = ctx.GLTF.GetArrayFromAccessorAsFloat(sampler.output);
AnimationImporter.SetAnimationCurve(
clip,
relativePath,
new string[] { "localScale.x", "localScale.y", "localScale.z" },
input,
output,
sampler.interpolation,
typeof(Transform),
(values, last) => values);
}
break;
case glTFAnimationTarget.PATH_WEIGHT:
{
var node = ctx.GLTF.nodes[channel.target.node];
var mesh = ctx.GLTF.meshes[node.mesh];
//var primitive = mesh.primitives.FirstOrDefault();
//var targets = primitive.targets;
List <string> blendShapeNames = new List <string>();
var transform = ctx.Nodes[channel.target.node];
var skinnedMeshRenderer = transform.GetComponent <SkinnedMeshRenderer>();
if (skinnedMeshRenderer == null)
{
continue;
}
for (int j = 0; j < skinnedMeshRenderer.sharedMesh.blendShapeCount; j++)
{
blendShapeNames.Add(skinnedMeshRenderer.sharedMesh.GetBlendShapeName(j));
}
var keyNames = blendShapeNames
.Where(x => !string.IsNullOrEmpty(x))
.Select(x => "blendShape." + x)
.ToArray();
var sampler = animation.samplers[channel.sampler];
var input = ctx.GLTF.GetArrayFromAccessor <float>(sampler.input);
var output = ctx.GLTF.GetArrayFromAccessor <float>(sampler.output);
AnimationImporter.SetAnimationCurve(
clip,
relativePath,
keyNames,
input,
output,
sampler.interpolation,
typeof(SkinnedMeshRenderer),
(values, last) =>
{
for (int j = 0; j < values.Length; j++)
{
values[j] *= 100.0f;
}
return(values);
});
}
break;
default:
Debug.LogWarningFormat("unknown path: {0}", channel.target.path);
break;
}
}
animasionClips.Add(clip);
}
return(animasionClips);
}
//ImporterContext m_context;
public ShaderStore(ImporterContext _)
{
//m_context = context;
}
public static MeshWithMaterials BuildMesh(ImporterContext ctx, MeshImporter.MeshContext meshContext)
{
if (!meshContext.materialIndices.Any())
{
meshContext.materialIndices.Add(0);
}
//Debug.Log(prims.ToJson());
var mesh = new Mesh();
mesh.name = meshContext.name;
if (meshContext.positions.Length > UInt16.MaxValue)
{
#if UNITY_2017_3_OR_NEWER
mesh.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;
#else
Debug.LogWarningFormat("vertices {0} exceed 65535. not implemented. Unity2017.3 supports large mesh",
meshContext.positions.Length);
#endif
}
mesh.vertices = meshContext.positions;
bool recalculateNormals = false;
if (meshContext.normals != null && meshContext.normals.Length > 0)
{
mesh.normals = meshContext.normals;
}
else
{
recalculateNormals = true;
}
if (meshContext.uv != null && meshContext.uv.Length > 0)
{
mesh.uv = meshContext.uv;
}
bool recalculateTangents = true;
#if UNIGLTF_IMPORT_TANGENTS
if (meshContext.tangents != null && meshContext.tangents.Length > 0)
{
mesh.tangents = meshContext.tangents;
recalculateTangents = false;
}
#endif
if (meshContext.colors != null && meshContext.colors.Length > 0)
{
mesh.colors = meshContext.colors;
}
if (meshContext.boneWeights != null && meshContext.boneWeights.Count > 0)
{
mesh.boneWeights = meshContext.boneWeights.ToArray();
}
mesh.subMeshCount = meshContext.subMeshes.Count;
for (int i = 0; i < meshContext.subMeshes.Count; ++i)
{
mesh.SetTriangles(meshContext.subMeshes[i], i);
}
if (recalculateNormals)
{
mesh.RecalculateNormals();
}
if (recalculateTangents)
{
#if UNITY_5_6_OR_NEWER
mesh.RecalculateTangents();
#else
CalcTangents(mesh);
#endif
}
var result = new MeshWithMaterials
{
Mesh = mesh,
Materials = meshContext.materialIndices.Select(x => ctx.GetMaterial(x)).ToArray()
};
if (meshContext.blendShapes != null)
{
Vector3[] emptyVertices = null;
foreach (var blendShape in meshContext.blendShapes)
{
if (blendShape.Positions.Count > 0)
{
if (blendShape.Positions.Count == mesh.vertexCount)
{
mesh.AddBlendShapeFrame(blendShape.Name, FRAME_WEIGHT,
blendShape.Positions.ToArray(),
(meshContext.normals != null && meshContext.normals.Length == mesh.vertexCount && blendShape.Normals.Count() == blendShape.Positions.Count()) ? blendShape.Normals.ToArray() : null,
null
);
}
else
{
Debug.LogWarningFormat("May be partial primitive has blendShape. Require separate mesh or extend blend shape, but not implemented: {0}", blendShape.Name);
}
}
else
{
if (emptyVertices == null)
{
emptyVertices = new Vector3[mesh.vertexCount];
}
// Debug.LogFormat("empty blendshape: {0}.{1}", mesh.name, blendShape.Name);
// add empty blend shape for keep blend shape index
mesh.AddBlendShapeFrame(blendShape.Name, FRAME_WEIGHT,
emptyVertices,
null,
null
);
}
}
}
return(result);
}
// multiple submMesh is not sharing a VertexBuffer.
// each subMesh use a independent VertexBuffer.
private static MeshContext _ImportMeshIndependentVertexBuffer(ImporterContext ctx, glTFMesh gltfMesh)
{
//Debug.LogWarning("_ImportMeshIndependentVertexBuffer");
var targets = gltfMesh.primitives[0].targets;
for (int i = 1; i < gltfMesh.primitives.Count; ++i)
{
if (!gltfMesh.primitives[i].targets.SequenceEqual(targets))
{
throw new NotImplementedException(string.Format("different targets: {0} with {1}",
gltfMesh.primitives[i],
targets));
}
}
var positions = new List <Vector3>();
var normals = new List <Vector3>();
var tangents = new List <Vector4>();
var uv = new List <Vector2>();
var colors = new List <Color>();
var meshContext = new MeshContext();
foreach (var prim in gltfMesh.primitives)
{
var indexOffset = positions.Count;
var indexBuffer = prim.indices;
var positionCount = positions.Count;
positions.AddRange(ctx.GLTF.GetArrayFromAccessor <Vector3>(prim.attributes.POSITION).Select(x => x.ReverseZ()));
positionCount = positions.Count - positionCount;
// normal
if (prim.attributes.NORMAL != -1)
{
normals.AddRange(ctx.GLTF.GetArrayFromAccessor <Vector3>(prim.attributes.NORMAL).Select(x => x.ReverseZ()));
}
if (prim.attributes.TANGENT != -1)
{
tangents.AddRange(ctx.GLTF.GetArrayFromAccessor <Vector4>(prim.attributes.TANGENT).Select(x => x.ReverseZ()));
}
// uv
if (prim.attributes.TEXCOORD_0 != -1)
{
if (ctx.IsGeneratedUniGLTFAndOlder(1, 16))
{
#pragma warning disable 0612
// backward compatibility
uv.AddRange(ctx.GLTF.GetArrayFromAccessor <Vector2>(prim.attributes.TEXCOORD_0).Select(x => x.ReverseY()));
#pragma warning restore 0612
}
else
{
uv.AddRange(ctx.GLTF.GetArrayFromAccessor <Vector2>(prim.attributes.TEXCOORD_0).Select(x => x.ReverseUV()));
}
}
else
{
// for inconsistent attributes in primitives
uv.AddRange(new Vector2[positionCount]);
}
// color
if (prim.attributes.COLOR_0 != -1)
{
colors.AddRange(ctx.GLTF.GetArrayFromAccessor <Color>(prim.attributes.COLOR_0));
}
// skin
if (prim.attributes.JOINTS_0 != -1 && prim.attributes.WEIGHTS_0 != -1)
{
var joints0 = ctx.GLTF.GetArrayFromAccessor <UShort4>(prim.attributes.JOINTS_0); // uint4
var weights0 = ctx.GLTF.GetArrayFromAccessor <Float4>(prim.attributes.WEIGHTS_0).Select(x => x.One()).ToArray();
for (int j = 0; j < joints0.Length; ++j)
{
var bw = new BoneWeight();
bw.boneIndex0 = joints0[j].x;
bw.weight0 = weights0[j].x;
bw.boneIndex1 = joints0[j].y;
bw.weight1 = weights0[j].y;
bw.boneIndex2 = joints0[j].z;
bw.weight2 = weights0[j].z;
bw.boneIndex3 = joints0[j].w;
bw.weight3 = weights0[j].w;
meshContext.boneWeights.Add(bw);
}
}
// blendshape
if (prim.targets != null && prim.targets.Count > 0)
{
for (int i = 0; i < prim.targets.Count; ++i)
{
//var name = string.Format("target{0}", i++);
var primTarget = prim.targets[i];
var blendShape = new BlendShape(!string.IsNullOrEmpty(prim.extras.targetNames[i])
? prim.extras.targetNames[i]
: i.ToString())
;
if (primTarget.POSITION != -1)
{
blendShape.Positions.AddRange(
ctx.GLTF.GetArrayFromAccessor <Vector3>(primTarget.POSITION).Select(x => x.ReverseZ()).ToArray());
}
if (primTarget.NORMAL != -1)
{
blendShape.Normals.AddRange(
ctx.GLTF.GetArrayFromAccessor <Vector3>(primTarget.NORMAL).Select(x => x.ReverseZ()).ToArray());
}
if (primTarget.TANGENT != -1)
{
blendShape.Tangents.AddRange(
ctx.GLTF.GetArrayFromAccessor <Vector3>(primTarget.TANGENT).Select(x => x.ReverseZ()).ToArray());
}
meshContext.blendShapes.Add(blendShape);
}
}
var indices =
(indexBuffer >= 0)
? ctx.GLTF.GetIndices(indexBuffer)
: TriangleUtil.FlipTriangle(Enumerable.Range(0, meshContext.positions.Length)).ToArray() // without index array
;
for (int i = 0; i < indices.Length; ++i)
{
indices[i] += indexOffset;
}
meshContext.subMeshes.Add(indices);
// material
meshContext.materialIndices.Add(prim.material);
}
meshContext.positions = positions.ToArray();
meshContext.normals = normals.ToArray();
meshContext.tangents = tangents.ToArray();
meshContext.uv = uv.ToArray();
return(meshContext);
}
public static void Load(ImporterContext context)
{
context.Load();
context.ShowMeshes();
context.EnableUpdateWhenOffscreen();
}
public void Import(ImporterContext context)
{
var animationClips = new AnimationClip[context.GLTF.animations.Count];
// node extension animation
for (int i = 0; i < context.GLTF.nodes.Count; i++)
{
var node = context.GLTF.nodes[i];
if (node.extensions == null || node.extensions.VCAST_vci_animation == null)
{
continue;
}
var vciAnimation = node.extensions.VCAST_vci_animation;
var root = context.Nodes[i];
var animation = root.gameObject.AddComponent <Animation>();
foreach (var animationReference in vciAnimation.animationReferences)
{
var gltfAnimation = context.GLTF.animations[animationReference.animation];
AnimationClip clip = null;
if (animationClips[animationReference.animation] == null)
{
clip = AnimationImporterUtil.ImportAnimationClip(context, gltfAnimation, root);
animationClips[animationReference.animation] = clip;
}
else
{
clip = animationClips[animationReference.animation];
}
if (clip != null)
{
animation.AddClip(clip, clip.name);
}
}
}
// root animation
var rootAnimation = context.Root.GetComponent <Animation>();
if (rootAnimation == null)
{
rootAnimation = context.Root.AddComponent <Animation>();
}
for (int i = 0; i < animationClips.Length; i++)
{
if (animationClips[i] != null)
{
continue;
}
var gltfAnimation = context.GLTF.animations[i];
animationClips[i] = AnimationImporterUtil.ImportAnimationClip(context, gltfAnimation, context.Root.transform);
rootAnimation.AddClip(animationClips[i], animationClips[i].name);
}
context.AnimationClips = new List <AnimationClip>(animationClips);
}
public void SameMeshButDifferentMaterialExport()
{
var go = new GameObject("same_mesh");
try
{
var shader = Shader.Find("Unlit/Color");
var cubeA = GameObject.CreatePrimitive(PrimitiveType.Cube);
{
cubeA.transform.SetParent(go.transform);
var material = new Material(shader);
material.name = "red";
material.color = Color.red;
cubeA.GetComponent <Renderer>().sharedMaterial = material;
}
{
var cubeB = GameObject.Instantiate(cubeA);
cubeB.transform.SetParent(go.transform);
var material = new Material(shader);
material.color = Color.blue;
material.name = "blue";
cubeB.GetComponent <Renderer>().sharedMaterial = material;
Assert.AreEqual(cubeB.GetComponent <MeshFilter>().sharedMesh, cubeA.GetComponent <MeshFilter>().sharedMesh);
}
// export
var gltf = new glTF();
var json = default(string);
using (var exporter = new gltfExporter(gltf))
{
exporter.Prepare(go);
exporter.Export();
json = gltf.ToJson();
}
Assert.AreEqual(2, gltf.meshes.Count);
var red = gltf.materials[gltf.meshes[0].primitives[0].material];
Assert.AreEqual(new float[] { 1, 0, 0, 1 }, red.pbrMetallicRoughness.baseColorFactor);
var blue = gltf.materials[gltf.meshes[1].primitives[0].material];
Assert.AreEqual(new float[] { 0, 0, 1, 1 }, blue.pbrMetallicRoughness.baseColorFactor);
Assert.AreEqual(2, gltf.nodes.Count);
Assert.AreNotEqual(gltf.nodes[0].mesh, gltf.nodes[1].mesh);
// import
{
var context = new ImporterContext();
context.ParseJson(json, new SimpleStorage(new ArraySegment <byte>(new byte[1024 * 1024])));
//Debug.LogFormat("{0}", context.Json);
context.Load();
var importedRed = context.Root.transform.GetChild(0);
var importedRedMaterial = importedRed.GetComponent <Renderer>().sharedMaterial;
Assert.AreEqual("red", importedRedMaterial.name);
Assert.AreEqual(Color.red, importedRedMaterial.color);
var importedBlue = context.Root.transform.GetChild(1);
var importedBlueMaterial = importedBlue.GetComponent <Renderer>().sharedMaterial;
Assert.AreEqual("blue", importedBlueMaterial.name);
Assert.AreEqual(Color.blue, importedBlueMaterial.color);
}
// import new version
{
var context = new ImporterContext
{
SerializerType = SerializerTypes.UniJSON
};
context.ParseJson(json, new SimpleStorage(new ArraySegment <byte>(new byte[1024 * 1024])));
//Debug.LogFormat("{0}", context.Json);
context.Load();
var importedRed = context.Root.transform.GetChild(0);
var importedRedMaterial = importedRed.GetComponent <Renderer>().sharedMaterial;
Assert.AreEqual("red", importedRedMaterial.name);
Assert.AreEqual(Color.red, importedRedMaterial.color);
var importedBlue = context.Root.transform.GetChild(1);
var importedBlueMaterial = importedBlue.GetComponent <Renderer>().sharedMaterial;
Assert.AreEqual("blue", importedBlueMaterial.name);
Assert.AreEqual(Color.blue, importedBlueMaterial.color);
}
}
finally
{
GameObject.DestroyImmediate(go);
}
}
public static void SetupSkinning(ImporterContext context, List <TransformWithSkin> nodes, int i)
{
var x = nodes[i];
var skinnedMeshRenderer = x.Transform.GetComponent <SkinnedMeshRenderer>();
if (skinnedMeshRenderer != null)
{
var mesh = skinnedMeshRenderer.sharedMesh;
if (x.SkinIndex.HasValue)
{
if (mesh == null)
{
throw new Exception();
}
if (skinnedMeshRenderer == null)
{
throw new Exception();
}
if (x.SkinIndex.Value < context.GLTF.skins.Count)
{
// calculate internal values(boundingBox etc...) when sharedMesh assigned ?
skinnedMeshRenderer.sharedMesh = null;
var skin = context.GLTF.skins[x.SkinIndex.Value];
var joints = skin.joints.Select(y => nodes[y].Transform).ToArray();
if (joints.Any())
{
// have bones
skinnedMeshRenderer.bones = joints;
if (skin.inverseBindMatrices != -1)
{
var bindPoses = context.GLTF.GetArrayFromAccessor <Matrix4x4>(skin.inverseBindMatrices)
.Select(y => y.ReverseZ())
.ToArray()
;
mesh.bindposes = bindPoses;
}
else
{
//
// calc default matrices
// https://docs.unity3d.com/ScriptReference/Mesh-bindposes.html
//
var meshCoords = skinnedMeshRenderer.transform; // ?
var calculatedBindPoses = joints.Select(y => y.worldToLocalMatrix * meshCoords.localToWorldMatrix).ToArray();
mesh.bindposes = calculatedBindPoses;
}
}
else
{
// BlendShape only ?
}
skinnedMeshRenderer.sharedMesh = mesh;
if (skin.skeleton >= 0 && skin.skeleton < nodes.Count)
{
skinnedMeshRenderer.rootBone = nodes[skin.skeleton].Transform;
}
}
}
}
}
// multiple submesh sharing same VertexBuffer
private static MeshContext _ImportMeshSharingVertexBuffer(ImporterContext ctx, glTFMesh gltfMesh)
{
var context = new MeshContext();
{
var prim = gltfMesh.primitives.First();
context.positions = ctx.GLTF.GetArrayFromAccessor <Vector3>(prim.attributes.POSITION).SelectInplace(x => x.ReverseZ());
// normal
if (prim.attributes.NORMAL != -1)
{
context.normals = ctx.GLTF.GetArrayFromAccessor <Vector3>(prim.attributes.NORMAL).SelectInplace(x => x.ReverseZ());
}
// tangent
if (prim.attributes.TANGENT != -1)
{
context.tangents = ctx.GLTF.GetArrayFromAccessor <Vector4>(prim.attributes.TANGENT).SelectInplace(x => x.ReverseZ());
}
// uv
if (prim.attributes.TEXCOORD_0 != -1)
{
if (ctx.IsGeneratedUniGLTFAndOlder(1, 16))
{
#pragma warning disable 0612
// backward compatibility
context.uv = ctx.GLTF.GetArrayFromAccessor <Vector2>(prim.attributes.TEXCOORD_0).SelectInplace(x => x.ReverseY());
#pragma warning restore 0612
}
else
{
context.uv = ctx.GLTF.GetArrayFromAccessor <Vector2>(prim.attributes.TEXCOORD_0).SelectInplace(x => x.ReverseUV());
}
}
else
{
// for inconsistent attributes in primitives
context.uv = new Vector2[context.positions.Length];
}
// color
if (prim.attributes.COLOR_0 != -1)
{
if (ctx.GLTF.accessors[prim.attributes.COLOR_0].TypeCount == 3)
{
var vec3Color = ctx.GLTF.GetArrayFromAccessor <Vector3>(prim.attributes.COLOR_0);
context.colors = new Color[vec3Color.Length];
for (int i = 0; i < vec3Color.Length; i++)
{
Vector3 color = vec3Color[i];
context.colors[i] = new Color(color.x, color.y, color.z);
}
}
else if (ctx.GLTF.accessors[prim.attributes.COLOR_0].TypeCount == 4)
{
context.colors = ctx.GLTF.GetArrayFromAccessor <Color>(prim.attributes.COLOR_0);
}
else
{
throw new NotImplementedException(string.Format("unknown color type {0}", ctx.GLTF.accessors[prim.attributes.COLOR_0].type));
}
}
// skin
if (prim.attributes.JOINTS_0 != -1 && prim.attributes.WEIGHTS_0 != -1)
{
var joints0 = ctx.GLTF.GetArrayFromAccessor <UShort4>(prim.attributes.JOINTS_0); // uint4
var weights0 = ctx.GLTF.GetArrayFromAccessor <Float4>(prim.attributes.WEIGHTS_0);
for (int i = 0; i < weights0.Length; ++i)
{
weights0[i] = weights0[i].One();
}
for (int j = 0; j < joints0.Length; ++j)
{
var bw = new BoneWeight();
bw.boneIndex0 = joints0[j].x;
bw.weight0 = weights0[j].x;
bw.boneIndex1 = joints0[j].y;
bw.weight1 = weights0[j].y;
bw.boneIndex2 = joints0[j].z;
bw.weight2 = weights0[j].z;
bw.boneIndex3 = joints0[j].w;
bw.weight3 = weights0[j].w;
context.boneWeights.Add(bw);
}
}
// blendshape
if (prim.targets != null && prim.targets.Count > 0)
{
context.blendShapes.AddRange(prim.targets.Select((x, i) => new BlendShape(
i < prim.extras.targetNames.Count && !string.IsNullOrEmpty(prim.extras.targetNames[i])
? prim.extras.targetNames[i]
: i.ToString())));
for (int i = 0; i < prim.targets.Count; ++i)
{
//var name = string.Format("target{0}", i++);
var primTarget = prim.targets[i];
var blendShape = context.blendShapes[i];
if (primTarget.POSITION != -1)
{
blendShape.Positions.Assign(
ctx.GLTF.GetArrayFromAccessor <Vector3>(primTarget.POSITION), x => x.ReverseZ());
}
if (primTarget.NORMAL != -1)
{
blendShape.Normals.Assign(
ctx.GLTF.GetArrayFromAccessor <Vector3>(primTarget.NORMAL), x => x.ReverseZ());
}
if (primTarget.TANGENT != -1)
{
blendShape.Tangents.Assign(
ctx.GLTF.GetArrayFromAccessor <Vector3>(primTarget.TANGENT), x => x.ReverseZ());
}
}
}
}
foreach (var prim in gltfMesh.primitives)
{
if (prim.indices == -1)
{
context.subMeshes.Add(TriangleUtil.FlipTriangle(Enumerable.Range(0, context.positions.Length)).ToArray());
}
else
{
var indices = ctx.GLTF.GetIndices(prim.indices);
context.subMeshes.Add(indices);
}
// material
context.materialIndices.Add(prim.material);
}
return(context);
}
public static TransformWithSkin BuildHierarchy(ImporterContext context, int i)
{
var go = context.Nodes[i].gameObject;
if (string.IsNullOrEmpty(go.name))
{
go.name = string.Format("node{0:000}", i);
}
var nodeWithSkin = new TransformWithSkin
{
Transform = go.transform,
};
//
// build hierarchy
//
var node = context.GLTF.nodes[i];
if (node.children != null)
{
foreach (var child in node.children)
{
context.Nodes[child].transform.SetParent(context.Nodes[i].transform,
false // node has local transform
);
}
}
//
// attach mesh
//
if (node.mesh != -1)
{
var mesh = context.Meshes[node.mesh];
if (mesh.Mesh.blendShapeCount == 0 && node.skin == -1)
{
// without blendshape and bone skinning
var filter = go.AddComponent <MeshFilter>();
filter.sharedMesh = mesh.Mesh;
var renderer = go.AddComponent <MeshRenderer>();
renderer.sharedMaterials = mesh.Materials;
// invisible in loading
renderer.enabled = false;
mesh.Renderers.Add(renderer);
}
else
{
var renderer = go.AddComponent <SkinnedMeshRenderer>();
if (node.skin != -1)
{
nodeWithSkin.SkinIndex = node.skin;
}
renderer.sharedMesh = mesh.Mesh;
renderer.sharedMaterials = mesh.Materials;
// invisible in loading
renderer.enabled = false;
mesh.Renderers.Add(renderer);
}
}
return(nodeWithSkin);
}
public MaterialImporter(IShaderStore shaderStore, ImporterContext context)
{
m_shaderStore = shaderStore;
m_context = context;
}
