Merge pull request #11592 from ahocevar/new-declutter

New decluttering implementation

src/ol/PluggableMap.js

@@ -50,8 +50,8 @@ import {removeNode} from './dom.js';
  * @property {import("./View.js").State} viewState The state of the current view.
  * @property {boolean} animate
  * @property {import("./transform.js").Transform} coordinateToPixelTransform
+ * @property {import("rbush").default} declutterTree
  * @property {null|import("./extent.js").Extent} extent
- * @property {Array<DeclutterItems>} declutterItems
  * @property {number} index
  * @property {Array<import("./layer/Layer.js").State>} layerStatesArray
  * @property {number} layerIndex
@@ -64,12 +64,6 @@ import {removeNode} from './dom.js';
  * @property {!Object<string, Object<string, boolean>>} wantedTiles
  */
 
-/**
- * @typedef {Object} DeclutterItems
- * @property {Array<*>} items Declutter items of an executor.
- * @property {number} opacity Layer opacity.
- */
-
 /**
  * @typedef {function(PluggableMap, ?FrameState): any} PostRenderFunction
  */
@@ -1387,9 +1381,7 @@ class PluggableMap extends BaseObject {
       frameState = {
         animate: false,
         coordinateToPixelTransform: this.coordinateToPixelTransform_,
-        declutterItems: previousFrameState
-          ? previousFrameState.declutterItems
-          : [],
+        declutterTree: null,
         extent: getForViewAndSize(
           viewState.center,
           viewState.resolution,