public virtual void Export(MeshExportSettings meshExportSettings, ITextureSerializer textureSerializer)
{
var bytesBuffer = new ArrayByteBuffer(new byte[50 * 1024 * 1024]);
var bufferIndex = glTF.AddBuffer(bytesBuffer);
Nodes = Copy.transform.Traverse()
.Skip(1) // exclude root object for the symmetry with the importer
.ToList();
var unityMeshes = MeshWithRenderer.FromNodes(Nodes).Where(x => x.Mesh.vertices.Any()).ToList();
var uniqueUnityMeshes = new List <MeshWithRenderer>();
foreach (var um in unityMeshes)
{
if (!uniqueUnityMeshes.Any(x => x.IsSameMeshAndMaterials(um)))
{
uniqueUnityMeshes.Add(um);
}
}
#region Materials and Textures
Materials = uniqueUnityMeshes.SelectMany(x => x.Renderer.sharedMaterials).Where(x => x != null).Distinct().ToList();
TextureExporter = new TextureExporter(textureSerializer);
var materialExporter = CreateMaterialExporter();
glTF.materials = Materials.Select(x => materialExporter.ExportMaterial(x, TextureExporter)).ToList();
#endregion
#region Meshes
MeshBlendShapeIndexMap = new Dictionary <Mesh, Dictionary <int, int> >();
foreach (var unityMesh in uniqueUnityMeshes)
{
var(gltfMesh, blendShapeIndexMap) = MeshExporter.ExportMesh(glTF, bufferIndex, unityMesh, Materials, meshExportSettings, m_axisInverter);
glTF.meshes.Add(gltfMesh);
Meshes.Add(unityMesh.Mesh);
if (!MeshBlendShapeIndexMap.ContainsKey(unityMesh.Mesh))
{
// 同じmeshが複数回現れた
MeshBlendShapeIndexMap.Add(unityMesh.Mesh, blendShapeIndexMap);
}
}
#endregion
#region Nodes and Skins
var unitySkins = uniqueUnityMeshes
.Where(x => x.UniqueBones != null)
.ToList();
glTF.nodes = Nodes.Select(x => ExportNode(x, Nodes, uniqueUnityMeshes, unitySkins.Select(y => y.Renderer as SkinnedMeshRenderer).ToList())).ToList();
glTF.scenes = new List <gltfScene>
{
new gltfScene
{
nodes = Copy.transform.GetChildren().Select(x => Nodes.IndexOf(x)).ToArray(),
}
};
foreach (var x in unitySkins)
{
var matrices = x.GetBindPoses().Select(m_axisInverter.InvertMat4).ToArray();
var accessor = glTF.ExtendBufferAndGetAccessorIndex(bufferIndex, matrices, glBufferTarget.NONE);
var renderer = x.Renderer as SkinnedMeshRenderer;
var skin = new glTFSkin
{
inverseBindMatrices = accessor,
joints = x.UniqueBones.Select(y => Nodes.IndexOf(y)).ToArray(),
skeleton = Nodes.IndexOf(renderer.rootBone),
};
var skinIndex = glTF.skins.Count;
glTF.skins.Add(skin);
foreach (var z in Nodes.Where(y => y.Has(x.Renderer)))
{
var nodeIndex = Nodes.IndexOf(z);
var node = glTF.nodes[nodeIndex];
node.skin = skinIndex;
}
}
#endregion
#if UNITY_EDITOR
#region Animations
var clips = new List <AnimationClip>();
var animator = Copy.GetComponent <Animator>();
var animation = Copy.GetComponent <Animation>();
if (animator != null)
{
clips = AnimationExporter.GetAnimationClips(animator);
}
else if (animation != null)
{
clips = AnimationExporter.GetAnimationClips(animation);
}
if (clips.Any())
{
foreach (AnimationClip clip in clips)
{
var animationWithCurve = AnimationExporter.Export(clip, Copy.transform, Nodes);
foreach (var kv in animationWithCurve.SamplerMap)
{
var sampler = animationWithCurve.Animation.samplers[kv.Key];
var inputAccessorIndex = glTF.ExtendBufferAndGetAccessorIndex(bufferIndex, kv.Value.Input);
sampler.input = inputAccessorIndex;
var outputAccessorIndex = glTF.ExtendBufferAndGetAccessorIndex(bufferIndex, kv.Value.Output);
sampler.output = outputAccessorIndex;
// modify accessors
var outputAccessor = glTF.accessors[outputAccessorIndex];
var channel = animationWithCurve.Animation.channels.First(x => x.sampler == kv.Key);
switch (glTFAnimationTarget.GetElementCount(channel.target.path))
{
case 1:
outputAccessor.type = "SCALAR";
//outputAccessor.count = ;
break;
case 3:
outputAccessor.type = "VEC3";
outputAccessor.count /= 3;
break;
case 4:
outputAccessor.type = "VEC4";
outputAccessor.count /= 4;
break;
default:
throw new NotImplementedException();
}
}
animationWithCurve.Animation.name = clip.name;
glTF.animations.Add(animationWithCurve.Animation);
}
}
#endregion
#endif
ExportExtensions(textureSerializer);
// Extension で Texture が増える場合があるので最後に呼ぶ
for (int i = 0; i < TextureExporter.Exported.Count; ++i)
{
var(unityTexture, colorSpace) = TextureExporter.Exported[i];
glTF.PushGltfTexture(bufferIndex, unityTexture, colorSpace, textureSerializer);
}
}
