import 'dart:typed_data';
import 'package:vid/us/vid_us_data_reader.dart';
import 'package:vid/us/vid_us_data_writer.dart';
import 'package:vid/us/vid_us_point.dart';
import 'package:vid/us/vid_us_rect.dart';

enum VidUs3DAreaIndicator { Global, A, B, C, ThreeD }

class VidUsTissue3DArea {
  late VidUsRect _bounds;

  late double _cmPerPixel;

  late VidUsPoint _globalOffset;

  late VidUs3DAreaIndicator _indicator;

  VidUsRect get bounds => _bounds;

  double get cmPerPixel => _cmPerPixel;

  VidUsPoint get globalOffset => _globalOffset;

  VidUs3DAreaIndicator get indicator => _indicator;

  VidUsTissue3DArea(VidUsRect bounds, double cmPerPixel,
      VidUsPoint globalOffset, VidUs3DAreaIndicator indicator) {
    _indicator = indicator;
    _globalOffset = globalOffset;
    _cmPerPixel = cmPerPixel;
    _bounds = bounds;
  }

  Uint8List toBytes() {
    var writer = new VidUsDataWriter();
    writer.writeByte(_indicator.index);
    writer.writeDouble(_cmPerPixel);
    writer.writeDouble(_globalOffset.x);
    writer.writeDouble(_globalOffset.y);
    writer.writeDouble(_bounds.left);
    writer.writeDouble(_bounds.top);
    writer.writeDouble(_bounds.right);
    writer.writeDouble(_bounds.bottom);
    return writer.data;
  }

  static VidUsTissue3DArea fromBytes(Uint8List tissue3DAreaData) {
    var reader = new VidUsDataReader(tissue3DAreaData);
    var indicator = VidUs3DAreaIndicator.values[reader.readByte()];
    var cmPerPixel = reader.readDouble();
    var x = reader.readDouble();
    var y = reader.readDouble();
    var globalOffset = new VidUsPoint(x, y);
    var left = reader.readDouble();
    var top = reader.readDouble();
    var right = reader.readDouble();
    var bottom = reader.readDouble();
    var bounds = new VidUsRect.tlbr(
        new VidUsPoint(left, top), new VidUsPoint(right, bottom));
    return new VidUsTissue3DArea(bounds, cmPerPixel, globalOffset, indicator);
  }
}