apple_vision_hand_3d

Apple Vision Hand 3D is a Flutter plugin that enables Flutter apps to use tensor flows Blaze Hand landmarks.

• This plugin is not sponsor or maintained by Apple. The authors are developers who wanted to make a similar plugin to Google's ml kit for macos.

Requirements

MacOS

• Minimum osx Deployment Target: 12.0
• Xcode 13 or newer
• Swift 5
• ML Kit only supports 64-bit architectures (x86_64 and arm64).

iOS

• Minimum ios Deployment Target: 14.0
• Xcode 13 or newer
• Swift 5
• ML Kit only supports 64-bit architectures (x86_64 and arm64).

Getting Started

You need to first import 'package:apple_vision/apple_vision.dart';

final GlobalKey cameraKey = GlobalKey(debugLabel: "cameraKey");
AppleVisionHand3DController visionController = AppleVisionHand3DController();
InsertCamera camera = InsertCamera();
Size imageSize = const Size(640,640*9/16);
String? deviceId;
bool loading = true;

List<HandMesh>? handData;
late double deviceWidth;
late double deviceHeight;

@override
void initState() {
  camera.setupCameras().then((value){
    setState(() {
      loading = false;
    });
    camera.startLiveFeed((InputImage i){
      if(i.metadata?.size != null){
        imageSize = i.metadata!.size;
      }
      if(mounted) {
        Uint8List? image = i.bytes;
        visionController.processImage(image!, imageSize, ImageOrientation.up).then((data){
          handData = data;
          setState(() {
            
          });
        });
      }
    });
  });
  super.initState();
}
@override
void dispose() {
  camera.dispose();
  super.dispose();
}

@override
Widget build(BuildContext context) {
  deviceWidth = MediaQuery.of(context).size.width;
  deviceHeight = MediaQuery.of(context).size.height;
  return Stack(
    children:<Widget>[
      SizedBox(
        width: imageSize.width, 
        height: imageSize.height, 
        child: loading?Container():CameraSetup(camera: camera, size: imageSize)
    ),
    ]+showPoints()
  );
}

List<Widget> showPoints(){
  if(handData == null || handData!.isEmpty) return[];
  List<Widget> widgets = [];
  Map<FingerJoint3D,Color> colors = {
    FingerJoint3D.thumbCMC: Colors.amber,
    FingerJoint3D.thumbIP: Colors.amber,
    FingerJoint3D.thumbMCP: Colors.amber,
    FingerJoint3D.thumbTip: Colors.amber,

    FingerJoint3D.indexDIP: Colors.green,
    FingerJoint3D.indexMCP: Colors.green,
    FingerJoint3D.indexPIP: Colors.green,
    FingerJoint3D.indexTip: Colors.green,

    FingerJoint3D.middleDIP: Colors.purple,
    FingerJoint3D.middleMCP: Colors.purple,
    FingerJoint3D.middlePIP: Colors.purple,
    FingerJoint3D.middleTip: Colors.purple,

    FingerJoint3D.ringDIP: Colors.pink,
    FingerJoint3D.ringMCP: Colors.pink,
    FingerJoint3D.ringPIP: Colors.pink,
    FingerJoint3D.ringTip: Colors.pink,

    FingerJoint3D.littleDIP: Colors.cyanAccent,
    FingerJoint3D.littleMCP: Colors.cyanAccent,
    FingerJoint3D.littlePIP: Colors.cyanAccent,
    FingerJoint3D.littleTip: Colors.cyanAccent,

    FingerJoint3D.wrist: Colors.black
  };
  for(int j = 0; j < handData!.length; j++){
    //print(handData![j].poses[0].location.y);
    for(int i = 0; i < handData![j].poses.length; i++){
      HandPoint3D points = handData![j].poses[i].location;
      widgets.add(
        Positioned(
          left: points.x * imageSize.width/2.56 + handData![0].image.origin.x,
          bottom: imageSize.height/2 - points.y * imageSize.width/2.56 + handData![0].image.origin.y+120,
          child: Container(
            width: 10,
            height: 10,
            decoration: BoxDecoration(
              color: colors[handData![j].poses[i].joint],
              borderRadius: BorderRadius.circular(5)
            ),
          )
        )
      );
    }
  }
  return widgets;
}

Widget loadingWidget(){
  return Container(
    width: deviceWidth,
    height:deviceHeight,
    color: Theme.of(context).canvasColor,
    alignment: Alignment.center,
    child: const CircularProgressIndicator(color: Colors.blue)
  );
}

Example

Find the example for this API here.

Contributing

Contributions are welcome. In case of any problems look at existing issues, if you cannot find anything related to your problem then open an issue. Create an issue before opening a pull request for non trivial fixes. In case of trivial fixes open a pull request directly.