public Unity3DTile(Unity3DTileset tileset, string basePath, Schema.Tile tile, Unity3DTile parent)
{
this.hashCode = (int)UnityEngine.Random.Range(0, int.MaxValue);
this.Tileset = tileset;
this.tile = tile;
this.FrameState = new TileFrameState();
if (tile.Content != null)
{
this.Id = Path.GetFileNameWithoutExtension(tile.Content.GetUri());
}
if (parent != null)
{
parent.Children.Add(this);
this.Depth = parent.Depth + 1;
}
// TODO: Consider using a double percision Matrix library for doing 3d tiles root transform calculations
// Set the local transform for this tile, default to identity matrix
this.transform = this.tile.UnityTransform();
var parentTransform = (parent != null) ? parent.computedTransform : tileset.GetRootTransform();
this.computedTransform = parentTransform * this.transform;
this.BoundingVolume = CreateBoundingVolume(tile.BoundingVolume, this.computedTransform);
// TODO: Add 2D bounding volumes
if (tile.Content != null && tile.Content.BoundingVolume.IsDefined())
{
// Non-leaf tiles may have a content bounding-volume, which is a tight-fit bounding volume
// around only the features in the tile. This box is useful for culling for rendering,
// but not for culling for traversing the tree since it does not guarantee spatial coherence, i.e.,
// since it only bounds features in the tile, not the entire tile, children may be
// outside of this box.
this.ContentBoundingVolume = CreateBoundingVolume(tile.Content.BoundingVolume, this.computedTransform);
}
else
{
// Default to tile bounding volume
this.ContentBoundingVolume = CreateBoundingVolume(tile.BoundingVolume, this.computedTransform);
}
// TODO: Add viewer request volume support
//if(tile.ViewerRequestVolume != null && tile.ViewerRequestVolume.IsDefined())
//{
// this.viewerRequestVolume = CreateBoundingVolume(tile.ViewerRequestVolume, transform);
//}
if (!tile.Refine.HasValue)
{
tile.Refine = (parent == null) ? Schema.TileRefine.REPLACE : parent.tile.Refine.Value;
}
this.Parent = parent;
if (this.HasEmptyContent)
{
this.ContentState = Unity3DTileContentState.READY;
}
else
{
ContentState = Unity3DTileContentState.UNLOADED;
this.ContentUrl = UrlUtils.JoinUrls(basePath, tile.Content.GetUri());
}
this.HasRenderableContent = false;
this.HasTilesetContent = false;
}
/// <summary>
/// Lower priority will be loaded sooner
/// </summary>
/// <param name="priority"></param>
public void RequestContent(float priority)
{
if (this.Tileset.RequestManager.Full())
{
return;
}
if (this.HasEmptyContent)
{
return;
}
if (this.ContentState == Unity3DTileContentState.UNLOADED ||
this.ContentState == Unity3DTileContentState.EXPIRED)
{
this.ContentState = Unity3DTileContentState.LOADING;
Promise <bool> finished = new Promise <bool>();
finished.Then((success) =>
{
this.Tileset.Statistics.NetworkError = !success;
this.Tileset.Statistics.RequestsThisFrame += 1;
if (success)
{
this.ContentState = Unity3DTileContentState.PROCESSING;
this.Content.SetShadowMode(this.Tileset.TilesetOptions.ShadowCastingMode, this.Tileset.TilesetOptions.RecieveShadows);
this.Tileset.Statistics.LoadedContentCount += 1;
this.Tileset.Statistics.TotalTilesLoaded += 1;
// Track tile in cache as soon as it has downloaded content, but still queue it for processing
CacheRequestStatus status = this.Tileset.LRUContent.Add(this);
if (status == CacheRequestStatus.ADDED)
{
this.Tileset.ProcessingQueue.Enqueue(this);
}
else
{
UnloadContent();
}
}
else
{
UnloadContent();
}
});
Promise started = new Promise();
started.Then(() =>
{
GameObject go = new GameObject(Id);
go.transform.parent = this.Tileset.Behaviour.transform;
go.transform.localPosition = new Vector3(this.computedTransform.m03, this.computedTransform.m13, this.computedTransform.m23);
go.transform.localRotation = this.computedTransform.rotation;
go.transform.localScale = this.computedTransform.lossyScale;
go.layer = this.Tileset.Behaviour.gameObject.layer;
go.SetActive(false);
var info = go.AddComponent <TileInfo>();
info.Tile = this;
this.Content = new Unity3DTileContent(go);
if (ContentType == Unity3DTileContentType.B3DM)
{
B3DMComponent b3dmCo = go.AddComponent <B3DMComponent>();
b3dmCo.Url = this.ContentUrl;
b3dmCo.Multithreaded = this.Tileset.TilesetOptions.GLTFMultithreadedLoad;
b3dmCo.MaximumLod = this.Tileset.TilesetOptions.GLTFMaximumLOD;
if (!string.IsNullOrEmpty(this.Tileset.TilesetOptions.ShaderOverride))
{
b3dmCo.ShaderOverride = Shader.Find(this.Tileset.TilesetOptions.ShaderOverride);
}
b3dmCo.AddColliders = false;
b3dmCo.DownloadOnStart = false;
this.Tileset.Behaviour.StartCoroutine(b3dmCo.Download(finished));
}
else if (ContentType == Unity3DTileContentType.PNTS)
{
PNTSComponent pntsCo = go.AddComponent <PNTSComponent>();
pntsCo.Url = UrlUtils.RemoveQuery(this.ContentUrl);
pntsCo.ShaderOverride = Shader.Find("Point Cloud/Point");
pntsCo.DownloadOnStart = false;
this.Tileset.Behaviour.StartCoroutine(pntsCo.Download(finished));
}
});
Request request = new Request(this, priority, started, finished);
this.Tileset.RequestManager.EnqueRequest(request);
}
}
public static IEnumerator Load(IndexMode mode, string tileUrl, Action <Unity3DTileIndex> success,
Action <IndexMode, string, string> fail)
{
if (mode == IndexMode.Default || mode == IndexMode.None)
{
success(null);
yield break;
}
string url = UrlUtils.ReplaceDataProtocol(tileUrl);
string dir = UrlUtils.GetBaseUri(tileUrl);
string file = UrlUtils.GetLastPathSegment(tileUrl);
var filesToTry = new Queue <string>();
if (mode == IndexMode.ExternalPNG)
{
filesToTry.Enqueue(UrlUtils.StripUrlExtension(file) + "_index.png");
filesToTry.Enqueue(UrlUtils.ChangeUrlExtension(file, ".png"));
}
else if (mode == IndexMode.ExternalPPM)
{
filesToTry.Enqueue(UrlUtils.StripUrlExtension(file) + "_index.ppm");
filesToTry.Enqueue(UrlUtils.ChangeUrlExtension(file, ".ppm"));
}
else if (mode == IndexMode.ExternalPPMZ)
{
filesToTry.Enqueue(UrlUtils.StripUrlExtension(file) + "_index.ppmz");
filesToTry.Enqueue(UrlUtils.ChangeUrlExtension(file, ".ppmz"));
}
else
{
filesToTry.Enqueue(file);
}
Stream stream = null;
Exception exception = null;
string ext = null;
while (stream == null && filesToTry.Count > 0)
{
exception = null;
IEnumerator enumerator = null;
ILoader loader = null;
try
{
file = filesToTry.Dequeue();
ext = UrlUtils.GetUrlExtension(file).ToLower();
loader = AbstractWebRequestLoader.CreateDefaultRequestLoader(dir);
if (ext == ".b3dm")
{
loader = new B3DMLoader(loader);
}
//yield return loader.LoadStream(file); //works but can't catch exceptions
enumerator = loader.LoadStream(file);
}
catch (Exception ex)
{
exception = ex;
}
while (exception == null)
{
try
{
if (!enumerator.MoveNext())
{
break;
}
}
catch (Exception ex)
{
exception = ex;
break;
}
yield return(enumerator.Current);
}
if (exception == null && loader.LoadedStream != null && loader.LoadedStream.Length > 0)
{
stream = loader.LoadedStream;
stream.Seek(0, SeekOrigin.Begin);
}
}
if (stream == null || stream.Length == 0)
{
fail(mode, tileUrl, "download failed" + (exception != null ? (" " + exception.Message) : ""));
yield break;
}
try
{
if (ext == ".b3dm" || ext == ".glb")
{
success(LoadFromGLB(stream));
}
else if (ext == ".gltf")
{
success(LoadFromGLTF(stream));
}
else if (ext == ".png")
{
success(LoadFromPNG(stream));
}
else if (ext == ".ppm" || ext == ".ppmz")
{
success(LoadFromPPM(stream, compressed: ext == ".ppmz"));
}
else
{
fail(mode, tileUrl, "unhandled file type: " + ext);
}
}
catch (Exception ex)
{
fail(mode, tileUrl, "failed to parse " + file + ": " + ex.Message + "\n" + ex.StackTrace);
}
}