protected override void Init()
{
base.Init();
this._root = new GLTFRoot
{
Accessors = new List <Accessor>(),
Asset = new Asset
{
Version = "2.0",
Generator = "paper",
},
Buffers = new List <GLTF.Schema.Buffer>(),
BufferViews = new List <BufferView>(),
Animations = new List <GLTF.Schema.Animation>(),
};
_buffer = new GLTF.Schema.Buffer();
_bufferId = new BufferId
{
Id = _root.Buffers.Count,
Root = _root
};
_root.Buffers.Add(_buffer);
}
/// <summary>
/// Create a GLTFExporter that exports out a transform
/// </summary>
/// <param name="rootTransforms">Root transform of object to export</param>
public GLTFSceneExporter(Transform[] rootTransforms)
{
_rootTransforms = rootTransforms;
_root = new GLTFRoot {
Accessors = new List <Accessor>(),
Asset = new Asset {
Version = "2.0"
},
Buffers = new List <GLTF.Schema.Buffer>(),
BufferViews = new List <BufferView>(),
Images = new List <Image>(),
Materials = new List <GLTF.Schema.Material>(),
Meshes = new List <GLTF.Schema.Mesh>(),
Nodes = new List <Node>(),
Samplers = new List <Sampler>(),
Scenes = new List <Scene>(),
Textures = new List <GLTF.Schema.Texture>(),
};
_images = new List <Texture2D>();
_materials = new List <UnityEngine.Material>();
_textures = new List <UnityEngine.Texture>();
_buffer = new GLTF.Schema.Buffer();
_bufferId = new BufferId {
Id = _root.Buffers.Count,
Root = _root
};
_root.Buffers.Add(_buffer);
}
/// <summary>
/// Load the remote URI data into a byte array.
/// </summary>
protected virtual IEnumerator LoadBuffer(string sourceUri, GLTF.Schema.Buffer buffer, int bufferIndex)
{
if (buffer.Uri != null)
{
Stream bufferStream = null;
var uri = buffer.Uri;
Regex regex = new Regex(Base64StringInitializer);
Match match = regex.Match(uri);
if (match.Success)
{
string base64String = uri.Substring(match.Length);
byte[] base64ByteData = Convert.FromBase64String(base64String);
bufferStream = new MemoryStream(base64ByteData, 0, base64ByteData.Length, false, true);
}
else if (_loadType == LoadType.Uri)
{
var www = UnityWebRequest.Get(Path.Combine(sourceUri, uri));
yield return(www.Send());
bufferStream = new MemoryStream(www.downloadHandler.data, 0, www.downloadHandler.data.Length, false, true);
}
else if (_loadType == LoadType.Stream)
{
var pathToLoad = Path.Combine(sourceUri, uri);
bufferStream = File.OpenRead(pathToLoad);
}
_assetCache.BufferCache[bufferIndex] = new BufferCacheData()
{
Stream = bufferStream
};
}
}
protected override void Init()
{
base.Init();
this._root = new GLTFRoot
{
Accessors = new List <Accessor>(),
Asset = new Asset
{
Version = "2.0",
Generator = "paper",
Extensions = new Dictionary <string, IExtension>(),
},
Buffers = new List <GLTF.Schema.Buffer>(),
BufferViews = new List <BufferView>(),
Meshes = new List <GLTF.Schema.Mesh>()
};
_root.Asset.Extensions.Add(CoordinateSystemExtensionFactory.EXTENSION_NAME, new CoordinateSystemExtension(CoordinateSystem.leftHand.ToString(), 1.0f));
_buffer = new GLTF.Schema.Buffer();
_bufferId = new BufferId
{
Id = _root.Buffers.Count,
Root = _root
};
_root.Buffers.Add(_buffer);
}
// todo undo
#if !WINDOWS_UWP
IEnumerator Start()
{
var fullPath0 = Application.streamingAssetsPath + Path.DirectorySeparatorChar + asset0Path;
ILoader loader0 = new FileLoader(URIHelper.GetDirectoryName(fullPath0));
var fullPath1 = Application.streamingAssetsPath + Path.DirectorySeparatorChar + asset1Path;
ILoader loader1 = new FileLoader(URIHelper.GetDirectoryName(fullPath1));
yield return(loader0.LoadStream(Path.GetFileName(asset0Path)));
var asset0Stream = loader0.LoadedStream;
var asset0Root = GLTFParser.ParseJson(asset0Stream);
yield return(loader1.LoadStream(Path.GetFileName(asset1Path)));
var asset1Stream = loader1.LoadedStream;
var asset1Root = GLTFParser.ParseJson(asset1Stream);
string newPath = "../../" + URIHelper.GetDirectoryName(asset0Path);
int previousBufferCount = asset1Root.Buffers.Count;
int previousImageCount = asset1Root.Images.Count;
int previousSceneCounter = asset1Root.Scenes.Count;
GLTFHelpers.MergeGLTF(asset1Root, asset0Root);
for (int i = previousBufferCount; i < asset1Root.Buffers.Count; ++i)
{
GLTF.Schema.Buffer buffer = asset1Root.Buffers[i];
if (!URIHelper.IsBase64Uri(buffer.Uri))
{
buffer.Uri = newPath + buffer.Uri;
}
}
for (int i = previousImageCount; i < asset1Root.Images.Count; ++i)
{
Image image = asset1Root.Images[i];
if (!URIHelper.IsBase64Uri(image.Uri))
{
image.Uri = newPath + image.Uri;
}
}
foreach (NodeId node in asset1Root.Scenes[asset0Root.Scene.Id + previousSceneCounter].Nodes)
{
node.Value.Translation.X += 5f;
asset1Root.Scene.Value.Nodes.Add(node);
}
GLTFSceneImporter importer = new GLTFSceneImporter(
asset1Root,
loader1
);
importer.MaximumLod = MaximumLod;
yield return(importer.LoadScene(-1, Multithreaded));
}
protected virtual void LoadBuffer(string sourceUri, GLTF.Schema.Buffer buffer, int bufferIndex)
{
if (buffer.Uri != null)
{
byte[] bufferData = null;
var uri = buffer.Uri;
var bufferPath = Path.Combine(sourceUri, uri);
bufferData = File.ReadAllBytes(bufferPath);
_assetCache.BufferCache[bufferIndex] = bufferData;
}
}
public void Finish()
{
var prefixStr = Config.GeneratorName;
for (var i = Config.GeneratorName.Length; i < 24; i += 1)
{
prefixStr += " ";
}
var prefix = Encoding.ASCII.GetBytes(prefixStr);
var uri = name + ".bin";
var fp = Path.Combine(ExporterSettings.Export.folder, uri);
var bufferId = new BufferId { Id = 0, Root = root };
var outputFile = new FileStream(fp, FileMode.Create);
int offset = prefix.Length;
using (var binWriter = new BinaryWriter(outputFile)) {
binWriter.Write(prefix);
foreach (var bufferView in _bufferViews)
{
int length = 0;
if (bufferView.byteBuffer != null)
{
length = bufferView.byteBuffer.Length;
binWriter.Write(bufferView.byteBuffer);
} else if (bufferView.streamBuffer != null)
{
length = (int)bufferView.streamBuffer.Length;
binWriter.Write(bufferView.streamBuffer.ToArray());
}
bufferView.view.ByteLength = length;
bufferView.view.ByteOffset = offset;
bufferView.view.Buffer = bufferId;
offset += length;
}
binWriter.Flush();
}
var buffer = new GLTF.Schema.Buffer();
buffer.ByteLength = offset;
buffer.Uri = uri;
root.Buffers = new List<GLTF.Schema.Buffer> { buffer };
using (var writer = File.CreateText(path))
{
root.Serialize(writer);
}
}
protected override void Init()
{
base.Init();
_root = new GLTFRoot
{
Accessors = new List <Accessor>(),
Asset = new Asset
{
Version = "2.0",
Generator = "paper",
},
Buffers = new List <GLTF.Schema.Buffer>(),
BufferViews = new List <BufferView>()
{
new BufferView {
Buffer = new BufferId()
{
Id = 0,
Root = _root,
},
ByteOffset = 0,
ByteLength = 0,
}
},
Nodes = new List <Node>(),
Scenes = new List <Scene>()
{
new Scene()
{
Nodes = new List <NodeId>(),
}
},
Animations = new List <GLTF.Schema.Animation>(),
};
_buffer = new GLTF.Schema.Buffer();
_bufferId = new BufferId
{
Id = _root.Buffers.Count,
Root = _root
};
_root.Buffers.Add(_buffer);
}
/// <summary>
/// Load the remote URI data into a byte array.
/// </summary>
protected virtual IEnumerator LoadBuffer(string sourceUri, GLTF.Schema.Buffer buffer, int bufferIndex)
{
if (buffer.Uri != null)
{
byte[] bufferData = null;
var uri = buffer.Uri;
Regex regex = new Regex(Base64StringInitializer);
Match match = regex.Match(uri);
if (match.Success)
{
var base64Data = uri.Substring(match.Length);
bufferData = Convert.FromBase64String(base64Data);
}
else if (_loadType == LoadType.Uri)
{
var www = UnityWebRequest.Get(Path.Combine(sourceUri, uri));
#if UNITY_2017_2_OR_NEWER
yield return(www.SendWebRequest());
#else
yield return(www.Send());
#endif
bufferData = www.downloadHandler.data;
}
else if (_loadType == LoadType.Stream)
{
var pathToLoad = Path.Combine(sourceUri, uri);
var file = File.OpenRead(pathToLoad);
bufferData = new byte[buffer.ByteLength];
file.Read(bufferData, 0, buffer.ByteLength);
#if !WINDOWS_UWP
file.Close();
#else
file.Dispose();
#endif
}
_assetCache.BufferCache[bufferIndex] = bufferData;
}
}
/// <summary>
/// Create a GLTFExporter that exports out a transform
/// </summary>
/// <param name="rootTransforms">Root transform of object to export</param>
public GLTFSceneExporter(Transform[] rootTransforms, RetrieveTexturePathDelegate retrieveTexturePathDelegate)
{
_retrieveTexturePathDelegate = retrieveTexturePathDelegate;
var metalGlossChannelSwapShader = Resources.Load("MetalGlossChannelSwap", typeof(UnityEngine.Shader)) as UnityEngine.Shader;
_metalGlossChannelSwapMaterial = new UnityEngine.Material(metalGlossChannelSwapShader);
var normalChannelShader = Resources.Load("NormalChannel", typeof(UnityEngine.Shader)) as UnityEngine.Shader;
_normalChannelMaterial = new UnityEngine.Material(normalChannelShader);
_rootTransforms = rootTransforms;
_root = new GLTFRoot {
Accessors = new List <Accessor>(),
Asset = new Asset {
Version = "2.0"
},
Buffers = new List <GLTF.Schema.Buffer>(),
BufferViews = new List <BufferView>(),
Images = new List <Image>(),
Materials = new List <GLTF.Schema.Material>(),
Meshes = new List <GLTF.Schema.Mesh>(),
Nodes = new List <Node>(),
Samplers = new List <Sampler>(),
Scenes = new List <Scene>(),
Textures = new List <GLTF.Schema.Texture>(),
};
_imageInfos = new List <ImageInfo> ();
_materials = new List <UnityEngine.Material> ();
_textures = new List <UnityEngine.Texture> ();
_buffer = new GLTF.Schema.Buffer();
_bufferId = new BufferId {
Id = _root.Buffers.Count,
Root = _root
};
_root.Buffers.Add(_buffer);
}
private IEnumerator LoadBuffers()
{
if (_root.Buffers != null)
{
// todo add fuzzing to verify that buffers are before uri
setProgress(IMPORT_STEP.BUFFER, 0, _root.Buffers.Count);
for (int i = 0; i < _root.Buffers.Count; ++i)
{
GLTF.Schema.Buffer buffer = _root.Buffers[i];
if (buffer.Uri != null)
{
LoadBuffer(_gltfDirectoryPath, buffer, i);
}
else //null buffer uri indicates GLB buffer loading
{
byte[] glbBuffer;
GLTFParser.ExtractBinaryChunk(_glTFData, i, out glbBuffer);
_assetCache.BufferCache[i] = glbBuffer;
}
setProgress(IMPORT_STEP.BUFFER, (i + 1), _root.Buffers.Count);
yield return(null);
}
}
}
/// <summary>
/// Creates a scene based off loaded JSON. Includes loading in binary and image data to construct the meshes required.
/// </summary>
/// <param name="sceneIndex">The index of scene in gltf file to load</param>
/// <param name="isMultithreaded">Whether to use a thread to do loading</param>
/// <returns></returns>
protected IEnumerator ImportScene(int sceneIndex = -1, bool isMultithreaded = false)
{
Scene scene;
if (sceneIndex >= 0 && sceneIndex < _root.Scenes.Count)
{
scene = _root.Scenes[sceneIndex];
}
else
{
scene = _root.GetDefaultScene();
}
if (scene == null)
{
throw new Exception("No default scene in gltf file.");
}
_assetCache = new AssetCache(
_root.Images != null ? _root.Images.Count : 0,
_root.Textures != null ? _root.Textures.Count : 0,
_root.Materials != null ? _root.Materials.Count : 0,
_root.Buffers != null ? _root.Buffers.Count : 0,
_root.Meshes != null ? _root.Meshes.Count : 0
);
if (_lastLoadedScene == null)
{
if (_root.Buffers != null)
{
// todo add fuzzing to verify that buffers are before uri
for (int i = 0; i < _root.Buffers.Count; ++i)
{
GLTF.Schema.Buffer buffer = _root.Buffers[i];
if (buffer.Uri != null)
{
yield return(LoadBuffer(_gltfDirectoryPath, buffer, i));
}
else //null buffer uri indicates GLB buffer loading
{
byte[] glbBuffer;
GLTFParser.ExtractBinaryChunk(_gltfData, i, out glbBuffer);
_assetCache.BufferCache[i] = glbBuffer;
}
}
}
if (_root.Images != null)
{
for (int i = 0; i < _root.Images.Count; ++i)
{
Image image = _root.Images[i];
yield return(LoadImage(_gltfDirectoryPath, image, i));
}
}
#if !WINDOWS_UWP
// generate these in advance instead of as-needed
if (isMultithreaded)
{
yield return(_asyncAction.RunOnWorkerThread(() => BuildAttributesForMeshes()));
}
#endif
}
var sceneObj = CreateScene(scene);
if (_sceneParent != null)
{
sceneObj.transform.SetParent(_sceneParent, false);
}
_lastLoadedScene = sceneObj;
}
public static GLTFRoot Deserialize(TextReader textReader)
{
var jsonReader = new JsonTextReader(textReader);
var root = new GLTFRoot();
if (jsonReader.Read() && jsonReader.TokenType != JsonToken.StartObject)
{
throw new Exception("gltf json must be an object");
}
while (jsonReader.Read() && jsonReader.TokenType == JsonToken.PropertyName)
{
var curProp = jsonReader.Value.ToString();
switch (curProp)
{
case "extensionsUsed":
root.ExtensionsUsed = jsonReader.ReadStringList();
break;
case "extensionsRequired":
root.ExtensionsRequired = jsonReader.ReadStringList();
break;
case "accessors":
root.Accessors = jsonReader.ReadList(() => Accessor.Deserialize(root, jsonReader));
break;
case "animations":
root.Animations = jsonReader.ReadList(() => Animation.Deserialize(root, jsonReader));
break;
case "asset":
root.Asset = Asset.Deserialize(root, jsonReader);
break;
case "buffers":
root.Buffers = jsonReader.ReadList(() => Buffer.Deserialize(root, jsonReader));
break;
case "bufferViews":
root.BufferViews = jsonReader.ReadList(() => BufferView.Deserialize(root, jsonReader));
break;
case "cameras":
root.Cameras = jsonReader.ReadList(() => Camera.Deserialize(root, jsonReader));
break;
case "images":
root.Images = jsonReader.ReadList(() => Image.Deserialize(root, jsonReader));
break;
case "materials":
root.Materials = jsonReader.ReadList(() => Material.Deserialize(root, jsonReader));
break;
case "meshes":
root.Meshes = jsonReader.ReadList(() => Mesh.Deserialize(root, jsonReader));
break;
case "nodes":
root.Nodes = jsonReader.ReadList(() => Node.Deserialize(root, jsonReader));
break;
case "samplers":
root.Samplers = jsonReader.ReadList(() => Sampler.Deserialize(root, jsonReader));
break;
case "scene":
root.Scene = SceneId.Deserialize(root, jsonReader);
break;
case "scenes":
root.Scenes = jsonReader.ReadList(() => GLTF.Schema.Scene.Deserialize(root, jsonReader));
break;
case "skins":
root.Skins = jsonReader.ReadList(() => Skin.Deserialize(root, jsonReader));
break;
case "textures":
root.Textures = jsonReader.ReadList(() => Texture.Deserialize(root, jsonReader));
break;
default:
root.DefaultPropertyDeserializer(root, jsonReader);
break;
}
}
return(root);
}
/// <summary>
/// Creates a scene based off loaded JSON. Includes loading in binary and image data to construct the meshes required.
/// </summary>
/// <param name="sceneIndex">The index of scene in gltf file to load</param>
/// <param name="isMultithreaded">Whether to use a thread to do loading</param>
/// <returns></returns>
protected IEnumerator ImportScene(int sceneIndex = -1, bool isMultithreaded = false)
{
GLTF.Schema.Scene scene;
if (sceneIndex >= 0 && sceneIndex < _root.Scenes.Count)
{
scene = _root.Scenes[sceneIndex];
}
else
{
scene = _root.GetDefaultScene();
}
if (scene == null)
{
throw new Exception("No default scene in gltf file.");
}
_assetCache = new AssetCache(
_root.Images != null ? _root.Images.Count : 0,
_root.Textures != null ? _root.Textures.Count : 0,
_root.Materials != null ? _root.Materials.Count : 0,
_root.Buffers != null ? _root.Buffers.Count : 0,
_root.Meshes != null ? _root.Meshes.Count : 0
);
if (_lastLoadedScene == null)
{
if (_root.Buffers != null)
{
// todo add fuzzing to verify that buffers are before uri
for (int i = 0; i < _root.Buffers.Count; ++i)
{
GLTF.Schema.Buffer buffer = _root.Buffers[i];
if (buffer.Uri != null)
{
yield return(LoadBuffer(_gltfDirectoryPath, buffer, i));
}
else //null buffer uri indicates GLB buffer loading
{
byte[] glbBuffer;
GLTFParser.ExtractBinaryChunk(_gltfData, i, out glbBuffer);
_assetCache.BufferCache[i] = glbBuffer;
}
}
}
if (_root.Images != null)
{
for (int i = 0; i < _root.Images.Count; ++i)
{
GLTF.Schema.Image image = _root.Images[i];
yield return(LoadImage(_gltfDirectoryPath, image, i));
}
}
#if !WINDOWS_UWP
// generate these in advance instead of as-needed
if (isMultithreaded)
{
yield return(_asyncAction.RunOnWorkerThread(() => BuildAttributesForMeshes()));
}
#endif
}
var sceneObj = CreateScene(scene);
if (_sceneParent != null)
{
sceneObj.transform.SetParent(_sceneParent, false);
}
// Experiment with fitting the scene into a prescribed size by accumulating
// all of the scenes nodes bounding boxes and then scaling the root node
// (I think this would be better as a mode to scale vertices but not for now..)
var allRenderersInScene = sceneObj.GetComponentsInChildren <Renderer>(false);
Bounds?box = null;
foreach (var renderer in allRenderersInScene)
{
//CreateBox(sceneObj.transform, renderer.bounds);
if (!box.HasValue)
{
box = new Bounds(renderer.bounds.center, renderer.bounds.size);
}
else
{
var val = box.Value;
val.Encapsulate(renderer.bounds);
box = val;
}
}
//CreateBox(sceneObj.transform, box);
// Now, for each individual mesh we can move the pivot to the bottom/centre
// w.r.t the vertices. This way we can easily place models on a flat surface
var allMeshesInScene = sceneObj.GetComponentsInChildren <MeshFilter>(false);
foreach (var renderer in allMeshesInScene)
{
var bbox = renderer.mesh.bounds;
// Calculate the distances we need to shift all of the vertices in
// each direction to get them centred in x and z and have them sitting
// at zero in the y-axis
float adjustY = bbox.center.y;
float adjustx = bbox.center.x;
float adjustZ = bbox.center.z;
//var verts = renderer.mesh.vertices;
//for (int i = 0; i < verts.Length; i++)
//{
// verts[i].x = verts[i].x - adjustx;
// verts[i].y = verts[i].y - adjustY;
// verts[i].z = verts[i].z - adjustZ;
//}
//renderer.mesh.vertices = verts;
}
Vector3 targetSize = Vector3.one / 4.0f;
Vector3 sceneBoundsSize = box.Value.max - box.Value.min;
float ratioX = targetSize.x / sceneBoundsSize.x;
float ratioY = targetSize.y / sceneBoundsSize.y;
float ratioZ = targetSize.z / sceneBoundsSize.z;
float biggest = Math.Min(ratioZ, Math.Min(ratioX, ratioY));
//sceneObj.transform.localScale = sceneObj.transform.localScale *
// (componentMax(targetSize) / componentMax(sceneBoundsSize));
//float f = componentMax(div(targetSize, sceneBoundsSize));
sceneObj.transform.localScale = sceneObj.transform.localScale * biggest;
_lastLoadedScene = sceneObj;
}
