Added active flag to avoid transform of inactive deepzoom images.

lib/pixi/deepzoom/image.js

@@ -364,6 +364,7 @@ export class DeepZoomImage extends PIXI.Container {
             : 1
         this.alpha = alpha
         this.fastLoads = 0
+        this.active = true
         this.autoLoadTiles = autoLoadTiles
         this.minimumLevel = minimumLevel
         this.quadTrees = new Map() // url as keys, TileQuadNodes as values
@@ -1017,6 +1018,9 @@ export class DeepZoomImage extends PIXI.Container {
      * @param {boolean} debug - log debug infos
      */
     transformed(event) {
+        if (!this.active) {
+            return
+        }
         let key = this.currentLevel.toString()
         let currentTiles = this.tileLayers[key]
         if (typeof currentTiles == 'undefined') {
@@ -1064,6 +1068,7 @@ export class DeepZoomImage extends PIXI.Container {
    * @memberof DeepZoomImage
    */
     activate() {
+        this.active = true
         this.destroyTilesAboveLevel(this.currentLevel)
         this.ensureTiles(this.currentLevel, null)
         //console.log("Activate Textures!", this.currentLevel)
@@ -1075,6 +1080,7 @@ export class DeepZoomImage extends PIXI.Container {
    * @memberof DeepZoomImage
    */
     deactivate() {
+        this.active = false
         this.destroyAllTiles()
         this.tileContainer.destroy({ children: true })
         printTileCacheInfos()

lib/pixi/deepzoom/tile.js

@@ -1,3 +1,5 @@
+/* ES Lint  */
+/* globals PIXI, console*/
 
 const registeredTiles = new Map()
 const pendingTiles = new Map()

lib/scatter.js

@@ -173,11 +173,16 @@ class Throwable {
         }
     }
 
+    _throwDeltaTime() {
+        let t = performance.now()
+        let dt = t - this.lastframe
+        this.lastframe = t
+        return dt
+    }
+
     animateThrow(time) {
         if (this.velocity != null) {
-            let t = performance.now()
-            let dt = t - this.lastframe
-            this.lastframe = t
+            let dt = this._throwDeltaTime()
             // console.log("animateThrow", dt)
             let next = this.nextVelocity(this.velocity)
             let prevLength = Points.length(this.velocity)