fis_lib_measure/lib/process/calcuators/distance.dart

import 'package:fis_measure/interfaces/date_types/point.dart';
import 'package:fis_measure/interfaces/process/calculators/output.dart';
import 'package:fis_measure/interfaces/process/items/types.dart';
import 'package:vid/us/vid_us_unit.dart';

import '../primitives/straightline.dart';
import 'calculator.dart';

class DistanceCal extends Calculator<StraightLine, double> {
  DistanceCal(StraightLine ref) : super(ref);

  @override
  void calculate() {
    if (ref.feature == null) return;

    final feature = ref.feature!;
    // TODO:xxx
    final viewport = feature.hostVisualArea!.viewport!;
    final p1 = feature.startPoint;
    final p2 = feature.endPoint;
    final pp1 = viewport.convert(p1);
    final pp2 = viewport.convert(p2);

    final value = (pp2 - pp1).length.abs();
    final floatValue = updateFloatValue(value);
    floatValue!.name = ref.displayName;
  }
}