fromAsset method

@override Future<ThreeFile?> fromAsset(String asset, { String? package, })

asset - path of the file to be loaded

package - if the file is from another flutter package add the name of the package here

Implementation

@override
Future<ThreeFile?> fromAsset(String asset, {String? package}) async{
  asset = package != null?'packages/$package/${path+asset}':path+asset;
  asset = manager.resolveURL(asset);
  final cacheName = asset;

  final cached = Cache.get(cacheName);

  if (cached != null) {
    manager.itemStart(cacheName);
    manager.itemEnd(cacheName);
    return ThreeFile('bytes',cached,'cache');
  }
  try{
    ByteData fileData = await rootBundle.load(asset);
    final bytes = fileData.buffer.asUint8List();
    Cache.add(cacheName,bytes);
    return ThreeFile('asset',bytes,asset);
  }
  catch(e){
    console.error('ThreeJS error: $e');
    return null;
  }
}