JavaScript ArcGIS FeatureEffect用法及代码示例

AMD: require(["esri/views/layers/support/FeatureEffect"], (FeatureEffect) => { /* code goes here */ });

ESM: import FeatureEffect from "@arcgis/core/views/layers/support/FeatureEffect";

类： esri/views/layers/support/FeatureEffect

继承: FeatureEffect > Accessor

自从：用于 JavaScript 4.11 的 ArcGIS API

FeatureEffect 允许您强调或弱化满足 2D MapView 过滤器的特征。 includedEffect 和 exceptedEffect 属性允许您将CSS filters应用于过滤器中包含或排除的函数。通常，您使用 includedEffect 强调过滤器中包含的函数，使用 excludedEffect 弱化从过滤器中排除的函数。

// apply feature effect on the layerView to features that do not
// meet the filter requirements
 featureFilter = new FeatureFilter({
  geometry: filterGeometry,
  spatialRelationship: "intersects",
  distance: distance,
  units: unit
});
// set effect on excluded features make them gray and transparent
if (layerView) {
  layerView.effect = new FeatureEffect({
    filter: featureFilter,
    excludedEffect: "grayscale(100%) opacity(30%)"
  });
}

 * // apply a feature effect to the features in the layer
const effect = new FeatureEffect({
  filter:{
    where: "magnitude >= 3"
  }
  excludedEffect: "grayscale(100%) opacity(30%)"
});
layer.effect = effect;