diff --git a/ios/Classes/SwiftPolyvoxFilamentPlugin.swift b/ios/Classes/SwiftPolyvoxFilamentPlugin.swift
index 411de877..739f86a0 100644
--- a/ios/Classes/SwiftPolyvoxFilamentPlugin.swift
+++ b/ios/Classes/SwiftPolyvoxFilamentPlugin.swift
@@ -44,13 +44,21 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
       let instance:SwiftPolyvoxFilamentPlugin = Unmanaged<SwiftPolyvoxFilamentPlugin>.fromOpaque(resourcesPtr).takeUnretainedValue()
 
       let uriString = String(cString:uri.assumingMemoryBound(to: UInt8.self))
-      
-      let key = instance.registrar.lookupKey(forAsset:uriString)
 
-      let path = Bundle.main.path(forResource: key, ofType:nil)
+      var path:String? = nil
+
+      if(uriString.hasPrefix("file://")) { 
+        path = String(uriString.dropFirst(7))
+      } else {
+        let key = instance.registrar.lookupKey(forAsset:uriString)
+        path = Bundle.main.path(forResource: key, ofType:nil)
+        guard path != nil else {
+          print("File not present in bundle : \(uri)")
+          return ResourceBuffer()
+        }
+      }
       do {
-        let foo: String = path!
-        let data = try Data(contentsOf: URL(fileURLWithPath:foo))
+        let data = try Data(contentsOf: URL(fileURLWithPath:path!))
         let resId = instance.resources.count
         let nsData = data as NSData
         instance.resources[resId] = nsData
@@ -144,26 +152,42 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
       let methodName = call.method;
 
       switch methodName {
+
+        case "addLight":
+          let args = call.arguments as! Array<Any>
+          let entity = add_light(
+            self.viewer,
+             args[0] as! UInt8,
+             Float(args[1] as! Double),
+             Float(args[2] as! Double),
+             Float(args[3] as! Double),
+             Float(args[4] as! Double),
+             Float(args[5] as! Double),
+             Float(args[6] as! Double),
+             Float(args[7] as! Double),
+             Float(args[8] as! Double),
+             args[9] as! Bool)
+           result(entity);
+        case "animateWeights":
+          let args = call.arguments as! Array<Any?>
+          let assetPtr = UnsafeMutableRawPointer.init(bitPattern: args[0] as! Int)
+          let frameData = args[1] as! Array<Double>
+          let numWeights = args[2] as! Int
+          let numFrames = args[3] as! Int
+          let frameLenInMs = args[4] as! Double
+          frameData.map { Float($0)}.withUnsafeBufferPointer {
+            animate_weights(assetPtr, UnsafeMutablePointer<Float>.init(mutating:$0.baseAddress), Int32(numWeights), Int32(numFrames), Float(frameLenInMs))
+          }
+          result("OK")
         case "initialize":
             let args = call.arguments as! Array<Int32>
             initialize(width:args[0], height:args[1])
             result(self.textureId);
-        case "setBackgroundImage":
-            let uri = call.arguments as! String
-            set_background_image(self.viewer!, uri)
-            render(self.viewer!, 0)
-            self.registry.textureFrameAvailable(self.textureId!)
-            result("OK")
-        case "setBackgroundImagePosition":
-            let args = call.arguments as! Array<Any>
-            set_background_image_position(self.viewer, Float(args[0] as! Double), Float(args[1] as! Double), args[2] as! Bool)
-            result("OK");
-        case "resize":
-            let args = call.arguments as! Array<Double>
-            let width = Int(args[0])
-            let height = Int(args[1])
-            createPixelBuffer(width: width, height:height)
-            result("OK")
+        
+        case "clearLights":
+           clear_lights(self.viewer);
+           result(true);
+        
         case "loadSkybox":
             load_skybox(self.viewer!, call.arguments as! String)
             result("OK");
@@ -224,7 +248,7 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
           let assetPtr = UnsafeMutableRawPointer.init(bitPattern: call.arguments as! Int)
           let numNames = get_animation_count(assetPtr)
           var names = [String]()
-          for i in 0...numNames - 1{
+          for i in 0..<numNames {
             let outPtr = UnsafeMutablePointer<CChar>.allocate(capacity:256)
             get_animation_name(assetPtr, outPtr, i)
             names.append(String(cString:outPtr))
@@ -239,27 +263,6 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
 
           }
           result("OK")
-        case "zoomBegin":
-          scroll_begin(self.viewer)
-          result("OK")
-        case "zoomUpdate":
-          let args = call.arguments as! Array<Any?>
-          scroll_update(self.viewer, Float(args[0] as! Double), Float(args[1] as! Double),Float(args[2] as! Double))
-          result("OK")
-        case "zoomEnd":
-          scroll_end(self.viewer)
-          result("OK")
-        case "animateWeights":
-          let args = call.arguments as! Array<Any?>
-          let assetPtr = UnsafeMutableRawPointer.init(bitPattern: args[0] as! Int)
-          let frameData = args[1] as! Array<Double>
-          let numWeights = args[2] as! Int
-          let numFrames = args[3] as! Int
-          let frameLenInMs = args[4] as! Double
-          frameData.map { Float($0)}.withUnsafeBufferPointer {
-            animate_weights(assetPtr, UnsafeMutablePointer<Float>.init(mutating:$0.baseAddress), Int32(numWeights), Int32(numFrames), Float(frameLenInMs))
-          }
-          result("OK")
         case "panStart":
           let args = call.arguments as! Array<Any>
           grab_begin(self.viewer, Float(args[0] as! Double), Float(args[1] as! Double), true)
@@ -271,6 +274,18 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
         case "panEnd":
           grab_end(self.viewer)
           result("OK")
+        case "removeLight":
+           remove_light(self.viewer,call.arguments as! Int32)
+           result(true);
+        case "render":
+          doRender()
+          result("OK")
+        case "resize":
+            let args = call.arguments as! Array<Double>
+            let width = Int(args[0])
+            let height = Int(args[1])
+            createPixelBuffer(width: width, height:height)
+            result("OK")
         case "rotateStart":
           let args = call.arguments as! Array<Any>
           grab_begin(self.viewer, Float(args[0] as! Double), Float(args[1] as! Double), false)
@@ -282,6 +297,16 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
         case "rotateEnd":
           grab_end(self.viewer)
           result("OK")
+        case "setBackgroundImage":
+            let uri = call.arguments as! String
+            set_background_image(self.viewer!, uri)
+            render(self.viewer!, 0)
+            self.registry.textureFrameAvailable(self.textureId!)
+            result("OK")
+        case "setBackgroundImagePosition":
+            let args = call.arguments as! Array<Any>
+            set_background_image_position(self.viewer, Float(args[0] as! Double), Float(args[1] as! Double), args[2] as! Bool)
+            result("OK");
         case "setPosition":
           let args = call.arguments as! Array<Any>
           let assetPtr = UnsafeMutableRawPointer.init(bitPattern: args[0] as! Int)
@@ -305,7 +330,8 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
         case "setCameraRotation":
           let args = call.arguments as! Array<Any>
           set_camera_rotation(self.viewer, Float(args[0] as! Double), Float(args[1] as! Double), Float(args[2] as! Double),Float(args[3] as! Double))
-       case "setCameraFocalLength":
+          result("OK")
+        case "setCameraFocalLength":
           set_camera_focal_length(self.viewer, Float(call.arguments as! Double))
           result("OK");
         case "setCameraFocusDistance":
@@ -313,38 +339,31 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
         //          set_camera_focus_distance(self.viewer, Float(call.arguments as! Double))
         //          result("OK");
           break
+        case "setFrameInterval":
+          set_frame_interval(self.viewer, Float(call.arguments as! Double));
+          result("OK")
         case "setRendering":
           _rendering = call.arguments as! Bool
           result("OK")
-        case "render":
-          doRender()
-          result("OK")
-        case "addLight":
-          let args = call.arguments as! Array<Any>
-          let entity = add_light(
-            self.viewer,
-             args[0] as! UInt8,
-             Float(args[1] as! Double),
-             Float(args[2] as! Double),
-             Float(args[3] as! Double),
-             Float(args[4] as! Double),
-             Float(args[5] as! Double),
-             Float(args[6] as! Double),
-             Float(args[7] as! Double),
-             Float(args[8] as! Double),
-             args[9] as! Bool)
-           result(entity);
-        case "removeLight":
-           remove_light(self.viewer,call.arguments as! Int32)
-           result(true);
-        case "clearLights":
-           clear_lights(self.viewer);
-           result(true);
         case "setTexture":
-            let args = call.arguments as! Array<Any>
-            let assetPtr = UnsafeMutableRawPointer.init(bitPattern: args[0] as! Int)
-            load_texture(assetPtr, args[1] as! String, args[2] as! Int32)
-            result("OK");
+          let args = call.arguments as! Array<Any>
+          let assetPtr = UnsafeMutableRawPointer.init(bitPattern: args[0] as! Int)
+          load_texture(assetPtr, args[1] as! String, args[2] as! Int32)
+          result("OK");
+        case "transformToUnitCube":
+          let assetPtr = UnsafeMutableRawPointer.init(bitPattern: call.arguments as! Int)
+          transform_to_unit_cube(assetPtr)
+          result("OK");
+        case "zoomBegin":
+          scroll_begin(self.viewer)
+          result("OK")
+        case "zoomUpdate":
+          let args = call.arguments as! Array<Any?>
+          scroll_update(self.viewer, Float(args[0] as! Double), Float(args[1] as! Double),Float(args[2] as! Double))
+          result("OK")
+        case "zoomEnd":
+          scroll_end(self.viewer)
+          result("OK")
         default:
           result(FlutterMethodNotImplemented)
       }