flutter_vid/lib/us/vid_us_logical_coordinate.dart

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';
import 'package:vid/us/vid_us_unit.dart';

class VidUsLogicalCoordinate {
  bool _isFlipHorizontal;
  bool _isFlipVertical;
  VidUsRect _region;
  VidUsUnit _xUnit;
  VidUsUnit _yUnit;

  bool get isFlipHorizontal => _isFlipHorizontal;

  bool get isFlipVertical => _isFlipVertical;

  VidUsRect get region => _region;

  VidUsUnit get xUnit => _xUnit;

  VidUsUnit get yUnit => _yUnit;

  VidUsLogicalCoordinate(this._isFlipHorizontal, this._isFlipVertical,
      this._region, this._xUnit, this._yUnit);

  Uint8List toBytes() {
    var writer = VidUsDataWriter();
    writer.writeBool(_isFlipHorizontal);
    writer.writeBool(_isFlipVertical);
    writer.writeByte(VidUsUnitMap.getUnitValue(_xUnit));
    writer.writeByte(VidUsUnitMap.getUnitValue(_yUnit));
    writer.writeDouble(_region.left);
    writer.writeDouble(_region.top);
    writer.writeDouble(_region.right);
    writer.writeDouble(_region.bottom);
    return writer.data;
  }

  static VidUsLogicalCoordinate fromBytes(Uint8List bytes) {
    var reader = VidUsDataReader(bytes);
    var isFlipHorizontal = reader.readBool();
    var isFlipVertical = reader.readBool();
    var xUnit = VidUsUnitMap.getUnit(reader.readByte());
    var yUnit = VidUsUnitMap.getUnit(reader.readByte());
    var left = reader.readDouble();
    var top = reader.readDouble();
    var right = reader.readDouble();
    var bottom = reader.readDouble();
    var region = VidUsRect.tlbr(
        VidUsPoint(left, top), VidUsPoint(right, bottom));
    return VidUsLogicalCoordinate(
        isFlipHorizontal, isFlipVertical, region, xUnit, yUnit);
  }
}