import 'package:flutter/material.dart';

class TimelineGeometry {
  const TimelineGeometry({
    required this.visibleStart,
    required this.visibleEnd,
    required this.pixelsPerMinute,
    this.minCardHeight = 48,
  });

  final TimeOfDay visibleStart;
  final TimeOfDay visibleEnd;
  final double pixelsPerMinute;
  final double minCardHeight;

  double yForMinutesSinceMidnight(int minutes) {
    final start = visibleStart.hour * 60 + visibleStart.minute;
    return (minutes - start) * pixelsPerMinute;
  }

  double heightForDuration(int minutes) {
    final height = minutes * pixelsPerMinute;
    return height < minCardHeight ? minCardHeight : height;
  }
}