improve the plot

modules/plot/Plot.js

@@ -36,6 +36,7 @@ class Plot {
     this._options = options
     this._layer = new Cesium.CustomDataSource('plot-layer')
     this._viewer.dataSources.add(this._layer)
+    this._currentWorker = undefined
     this._state = undefined
   }
 
@@ -156,7 +157,10 @@ class Plot {
    */
   draw(type, callback, style = {}, clampToModel = false) {
     this._state = 'draw'
-    this._createDrawWorker(type, style)?.start(this, {
+    if (this._currentWorker) {
+      this._currentWorker.stop()
+    }
+    this._currentWorker = this._createDrawWorker(type, style)?.start(this, {
       ...this._options,
       onDrawStop: callback,
       clampToModel: clampToModel ?? this._options.clampToModel
@@ -173,7 +177,10 @@ class Plot {
    */
   edit(overlay, callback, clampToModel = false) {
     this._state = 'edit'
-    this._createEditWorker(overlay)?.start(this, {
+    if (this._currentWorker) {
+      this._currentWorker.stop()
+    }
+    this._currentWorker = this._createEditWorker(overlay)?.start(this, {
       ...this._options,
       onEditStop: callback,
       clampToModel: clampToModel ?? this._options.clampToModel

modules/plot/draw/Draw.js

@@ -98,6 +98,15 @@ class Draw {
     this._bindEvent()
     return this
   }
+
+  /**
+   *
+   * @returns {Draw}
+   */
+  stop() {
+    this.drawTool.fire(PlotEventType.DRAW_STOP)
+    return this
+  }
 }
 
 export default Draw

modules/plot/edit/Edit.js

@@ -147,6 +147,18 @@ class Edit {
     this._bindEvent()
     return this
   }
+
+  /**
+   *
+   * @returns {Edit}
+   */
+  stop() {
+    this.editTool.fire(PlotEventType.EDIT_STOP, {
+      pickedAnchor: null,
+      position: null
+    })
+    return this
+  }
 }
 
 export default Edit