自定义路线多段线

本文档介绍了如何为所跟踪的路线自定义外观和风格。 地图上显示车辆。路线会在地图上以多段线形式绘制。对于 即车辆的有效或剩余路径中的坐标,库可创建 google.maps.Polyline 对象。 您可以通过指定多段线自定义设置来为 Polyline 对象设置样式。 该库便会在以下两种情况下应用:

  • 在将对象添加到地图之前
  • 当用于对象的数据发生更改时

设置多段线的样式

与自定义标记的方式类似,您也可以在 方法:

  1. 按类型设置路线多段线的样式:使用 PolylineOptions 应用于所有匹配的 Polyline 对象,前提是这些对象 创建或更新如需查看示例,请参阅按类型设置多段线的样式

  2. 根据数据设置路线多段线的样式:指定自定义函数 根据来自车队跟踪或外部来源的数据:

    • 来自车队跟踪的数据:车队跟踪会将多段线数据传递到 自定义功能,包括当前车辆的数据 状态。您可以根据这些数据设置多段线的样式,包括着色 为 Polyline 对象设置更深的阴影,或在 车辆行驶速度较慢

    • 外部来源:您可以将车队跟踪数据与以下来源的数据结合使用: Fleet Engine 以外的来源,并根据此设置 Polyline 对象的样式。 信息。

    如需查看示例,请参阅根据数据设置多段线的样式

  3. 控制路线多段线的可见性:您可以使用 visible 属性隐藏或显示多段线。有关详情,请参阅 在本指南中,您可以控制多段线的可见性

  4. 显示车辆或位置标记的其他信息: 您可以使用 infowindow 属性显示更多信息。对于 请参阅 显示车辆或位置标记的其他信息: 本指南。

多段线自定义选项

以下自定义选项在 FleetEngineVehicleLocationProviderOptionsFleetEngineDeliveryVehicleLocationProviderOptions。 您可以在车辆的 旅程:

按类型设置路线多段线的样式

若要按类型设置路线多段线的样式,请更改 Polyline 对象的样式 使用 PolylineOptions

以下示例展示了如何配置 Polyline 对象的样式 与 PolylineOptions 共享。遵循此模式可自定义任何图片的样式 Polyline 对象,其中列出了 本指南中的多段线自定义选项

按需行程或计划任务示例

JavaScript

activePolylineCustomization = {
  strokeWidth: 5,
  strokeColor: 'black',
};

TypeScript

activePolylineCustomization = {
  strokeWidth: 5,
  strokeColor: 'black',
};

使用数据设置路线多段线的样式

若要使用数据设置路线多段线的样式,请更改 Polyline 对象的样式 自定义功能

以下示例展示了如何配置活跃路由的样式 自定义功能。按照这个格式自定义 使用列出的多段线自定义参数的任意 Polyline 对象 (请参阅本指南的多段线自定义选项)。

按需行程示例

JavaScript

// Color the Polyline objects in green if the vehicle is nearby.
activePolylineCustomization =
  (params) => {
    const distance = params.vehicle.waypoints[0].distanceMeters;
    if (distance < 1000) {

      // params.polylines contains an ordered list of Polyline objects for
      // the path.
      for (const polylineObject of params.polylines) {
        polylineObject.setOptions({strokeColor: 'green'});
      }
    }
  };

TypeScript

// Color the Polyline objects in green if the vehicle is nearby.
activePolylineCustomization =
  (params: VehiclePolylineCustomizationFunctionParams) => {
    const distance = params.vehicle.waypoints[0].distanceMeters;
    if (distance < 1000) {

      // params.polylines contains an ordered list of Polyline objects for
      // the path.
      for (const polylineObject of params.polylines) {
        polylineObject.setOptions({strokeColor: 'green'});
      }
    }
  };

计划任务示例

JavaScript

// Color the Polyline objects in green if the vehicle is nearby.
activePolylineCustomization =
  (params) => {
    const distance = params.deliveryVehicle.remainingDistanceMeters;
    if (distance < 1000) {

      // params.polylines contains an ordered list of Polyline objects for
      // the path.
      for (const polylineObject of params.polylines) {
        polylineObject.setOptions({strokeColor: 'green'});
      }
    }
  };

TypeScript

// Color the Polyline objects in green if the vehicle is nearby.
activePolylineCustomization =
  (params: DeliveryVehiclePolylineCustomizationFunctionParams) => {
    const distance = params.deliveryVehicle.remainingDistanceMeters;
    if (distance < 1000) {

      // params.polylines contains an ordered list of Polyline objects for
      // the path.
      for (const polylineObject of params.polylines) {
        polylineObject.setOptions({strokeColor: 'green'});
      }
    }
  };

路况感知型样式设置示例(仅限按需行程)

Fleet Engine 会返回以下有效路径和剩余路径的流量速度数据: 相应车辆。您可以使用此信息来设置 Polyline 的样式 对象:

JavaScript

// Color the Polyline objects according to their real-time traffic levels
// using '#05f' for normal, '#fa0' for slow, and '#f33' for traffic jam.
activePolylineCustomization =
  FleetEngineVehicleLocationProvider.
      TRAFFIC_AWARE_ACTIVE_POLYLINE_CUSTOMIZATION_FUNCTION;

// Or alter the objects further after the customization function has been
// run -- in this example, change the blue for normal to green:
activePolylineCustomization =
  (params) => {
    FleetEngineVehicleLocationProvider.
        TRAFFIC_AWARE_ACTIVE_POLYLINE_CUSTOMIZATION_FUNCTION(params);
    for (const polylineObject of params.polylines) {
      if (polylineObject.get('strokeColor') === '#05f') {
        polylineObject.setOptions({strokeColor: 'green'});
      }
    }
  };

TypeScript

// Color the Polyline objects according to their real-time traffic levels
// using '#05f' for normal, '#fa0' for slow, and '#f33' for traffic jam.
activePolylineCustomization =
  FleetEngineVehicleLocationProvider.
      TRAFFIC_AWARE_ACTIVE_POLYLINE_CUSTOMIZATION_FUNCTION;

// Or alter the objects further after the customization function has been
// run -- in this example, change the blue for normal to green:
activePolylineCustomization =
  (params: VehiclePolylineCustomizationFunctionParams) => {
    FleetEngineVehicleLocationProvider.
        TRAFFIC_AWARE_ACTIVE_POLYLINE_CUSTOMIZATION_FUNCTION(params);
    for (const polylineObject of params.polylines) {
      if (polylineObject.get('strokeColor') === '#05f') {
        polylineObject.setOptions({strokeColor: 'green'});
      }
    }
  };

控制多段线的可见性

默认情况下,所有 Polyline 对象均可见。创建一个 Polyline 对象 则将其 visible 属性设置为 false

按需行程或计划任务示例

JavaScript

remainingPolylineCustomization = {visible: false};

TypeScript

remainingPolylineCustomization = {visible: false};

显示车辆或位置标记的信息窗口

您可以使用 InfoWindow 来显示 车辆或位置标记。

以下示例展示了如何创建 InfoWindow 并将其附加到车辆标记。

按需行程示例

JavaScript

// 1. Create an info window.
const infoWindow = new google.maps.InfoWindow(
    {disableAutoPan: true});

// (Assumes a vehicle location provider.)
locationProvider.addListener('update', e => {
  if (e.vehicle) {
    const distance =
          e.vehicle.remainingDistanceMeters;
    infoWindow.setContent(
        `Your vehicle is ${distance}m away from the next drop-off point.`);

    // 2. Attach the info window to a vehicle marker.
    // This property can return multiple markers.
    const marker = mapView.vehicleMarkers[0];
    infoWindow.open(mapView.map, marker);
  }
});

// 3. Close the info window.
infoWindow.close();

TypeScript

// 1. Create an info window.
const infoWindow = new google.maps.InfoWindow(
    {disableAutoPan: true});

// (Assumes a vehicle location provider.)
locationProvider.addListener('update', (e: google.maps.journeySharing.FleetEngineVehicleLocationProviderUpdateEvent) => {
  if (e.vehicle) {
    const distance =
          e.vehicle.remainingDistanceMeters;
    infoWindow.setContent(
        `Your vehicle is ${distance}m away from the next drop-off.`);
    // 2. Attach the info window to a vehicle marker.
    // This property can return multiple markers.
    const marker = mapView.vehicleMarkers[0];
    infoWindow.open(mapView.map, marker);
  }
});

// 3. Close the info window.
infoWindow.close();

计划任务示例

JavaScript

// 1. Create an info window.
const infoWindow = new google.maps.InfoWindow(
    {disableAutoPan: true});

// (Assumes a delivery vehicle location provider.)
locationProvider.addListener('update', e => {
  if (e.deliveryVehicle) {
    const distance =
           e.deliveryVehicle.remainingDistanceMeters;
    infoWindow.setContent(
        `Your vehicle is ${distance}m away from the next task.`);

    // 2. Attach the info window to a vehicle marker.
    // This property can return multiple markers.
    const marker = mapView.vehicleMarkers[0];
    infoWindow.open(mapView.map, marker);
  }
});

// 3. Close the info window.
infoWindow.close();

TypeScript

// 1. Create an info window.
const infoWindow = new google.maps.InfoWindow(
    {disableAutoPan: true});

// (Assumes a delivery vehicle location provider.)
locationProvider.addListener('update', (e: google.maps.journeySharing.FleetEngineDeliveryVehicleLocationProviderUpdateEvent) => {
  if (e.deliveryVehicle) {
    const distance =
           e.deliveryVehicle.remainingDistanceMeters;
    infoWindow.setContent(
        `Your vehicle is ${distance}m away from the next task.`);

    // 2. Attach the info window to a vehicle marker.
    // This property can return multiple markers.
    const marker = mapView.vehicleMarkers[0];
    infoWindow.open(mapView.map, marker);
  }
});

// 3. Close the info window.
infoWindow.close();

后续步骤