50 lines
1.5 KiB
Dart
50 lines
1.5 KiB
Dart
import 'package:equatable/equatable.dart';
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/// 倒车影像数据契约：将来嵌入式实时回传的字段就映射到这里。
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///
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/// 嵌入式协议对齐清单（按这些语义推送即可）：
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/// - gear：挡位。0=停车/空挡, 1=前进, 2=倒车。
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/// - steeringAngle：当前转向角，单位度，范围 -45(左)~+45(右)，0=正后。
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/// - speed：当前实际速度，单位 m/s（>=0），预留给引导线流速等扩展动画。
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/// - rearDistanceCm：后部障碍物距离（厘米），null 表示无测距传感器。
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class ReverseCameraData extends Equatable {
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final int gear;
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final double steeringAngle;
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final double speed;
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final int? rearDistanceCm;
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const ReverseCameraData({
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this.gear = 0,
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this.steeringAngle = 0,
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this.speed = 0,
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this.rearDistanceCm,
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});
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/// 初始/待机态：不显示倒车引导线。
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const ReverseCameraData.idle()
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: gear = 0,
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steeringAngle = 0,
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speed = 0,
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rearDistanceCm = null;
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/// 是否处于倒车挡（引导线显示的唯一开关）。
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bool get isReversing => gear == 2;
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ReverseCameraData copyWith({
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int? gear,
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double? steeringAngle,
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double? speed,
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int? rearDistanceCm,
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}) {
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return ReverseCameraData(
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gear: gear ?? this.gear,
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steeringAngle: steeringAngle ?? this.steeringAngle,
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speed: speed ?? this.speed,
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rearDistanceCm: rearDistanceCm ?? this.rearDistanceCm,
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);
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}
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@override
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List<Object?> get props => [gear, steeringAngle, speed, rearDistanceCm];
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}
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