JavaScript ArcGIS StreamLayerView.featureEffect用法及代码示例

基本信息

以下是所在类或对象的基本信息。

类： esri/views/layers/StreamLayerView

继承: StreamLayerView > LayerView > Accessor

自从：用于 JavaScript 4.4 的 ArcGIS API

用法说明

StreamLayerView.featureEffect函数(或属性)的定义如下：

featureEffect FeatureEffect autocast

自从：ArcGIS 适用于 JavaScript 4.22 的 API

featureEffect 可用于吸引感兴趣的注意力特征。它允许通过 filter 选择特征，并且将 includedEffect 和 excludedEffect 应用于分别通过或未通过过滤器要求的那些特征。

如果在图层上设置了featureEffect，它将被layerView.featureEffect继承，除非开发者在layerView上覆盖它。如果设置了这两个属性，layerView.featureEffect 将优先于 layer.featureEffect。

已知限制

以下场景不支持FeatureEffect：
- 在 3D 中SceneViews
- 在使用HeatmapRenderer 渲染的图层中
- 当 FeatureReductionCluster 启用时
- 当Map是printed
在 layerView 上设置的 FeatureEffect 不能保留在 WebMap 中。

例子：

// gray out features that fall outside of the 3 mile buffer of the mouse's location
// by setting feature effect on excluded features
layerView.featureEffect = new FeatureEffect({
  filter: new FeatureFilter({
    geometry: filterGeometry,
    spatialRelationship: "intersects",
    distance: 3,
    units: "miles"
  }),
  excludedEffect: "grayscale(100%) opacity(30%)"
});

// Apply a drop-shadow feature effect to the features that intersect the borough boundaries,
// while applying blur and brightness effects to the features that are excluded from filter criteria.
// The resulting map will make it easier to spot if the residents are more likely to experience deprivation
// if they live on a borough boundary.
const featureFilter = new FeatureFilter({
  where: "BoroughEdge='true'"
});
layerView.featureEffect = new FeatureEffect({
  filter: featureFilter,
  includedEffect: "drop-shadow(3px, 3px, 3px, black)",
  excludedEffect: "blur(1px) brightness(65%)"
});

相关用法

注：本文由纯净天空筛选整理自arcgis.com大神的英文原创作品 StreamLayerView.featureEffect。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。