/// <summary>
/// Asynchronously imports the given .obj file from the specified url
/// </summary>
/// <param name="url">The url to the .obj file</param>
/// <returns>The GameObject that was created for the imported .obj</returns>
public async Task <GameObject> ImportAsync(string url)
{
i5Debug.Log("Starting import", this);
Uri uri = new Uri(url);
// fetch the model
WebResponse <string> resp = await FetchModelAsync(uri);
// if there was an error, we cannot create anything
if (!resp.Successful)
{
i5Debug.LogError("Error fetching obj. No object imported.\n" + resp.ErrorMessage, this);
return(null);
}
// create the parent object
// it is a standard GameObject; its only purpose is to bundle the child objects
GameObject parentObject = ObjectPool <GameObject> .RequestResource(() => { return(new GameObject()); });
parentObject.name = System.IO.Path.GetFileNameWithoutExtension(uri.LocalPath);
// parse the .obj file
List <ObjParseResult> parseResults = await ParseModelAsync(resp.Content);
// for each sub-object in the .obj file, an own parse result was created
foreach (ObjParseResult parseResult in parseResults)
{
// check that the referenced mtl library is already loaded; if not: load it
if (!MtlLibrary.LibraryLoaded(parseResult.LibraryPath))
{
string mtlUri = UriUtils.RewriteFileUriPath(uri, parseResult.LibraryPath);
string libraryName = System.IO.Path.GetFileNameWithoutExtension(uri.LocalPath);
bool successful = await MtlLibrary.LoadLibraryAsyc(new Uri(mtlUri), libraryName);
if (!successful)
{
i5Debug.LogError("Could not load .mtl file " + parseResult.LibraryPath, this);
}
}
// get the material constructor of the sub-object
MaterialConstructor mat = MtlLibrary.GetMaterialConstructor(
System.IO.Path.GetFileNameWithoutExtension(uri.LocalPath),
parseResult.MaterialName);
if (mat != null)
{
// first get dependencies; this will e.g. fetch referenced textures
await mat.FetchDependencies();
parseResult.ObjectConstructor.MaterialConstructor = mat;
}
// construct the object and make it a child of the parentObject
parseResult.ObjectConstructor.ConstructObject(parentObject.transform);
}
return(parentObject);
}
/// <summary>
/// Called by the service manager to initialize the service if it is started
/// </summary>
/// <param name="owner">The service manager that owns this service</param>
public void Initialize(IServiceManager owner)
{
MtlLibrary = new MtlLibrary();
// initialize the content loader
if (ContentLoader == null)
{
ContentLoader = new UnityWebRequestLoader();
}
// reserve a mesh object pool id
meshObjectPoolId = ObjectPool <GameObject> .CreateNewPool();
}
