fix #3

js/x3dom_init.js

@@ -711,6 +711,7 @@ X3DOMObject.Marker.prototype._registerEvents = function(){
     
     marker.on('mousedown',function(e){
 
+        var self = this;
         var elem = $(this).parent().parent().parent();
         var index = parseInt($(elem).attr("id").substr(PREFIX.length));
         
@@ -726,6 +727,13 @@ X3DOMObject.Marker.prototype._registerEvents = function(){
         
         Scene.element.addEventListener('mousemove',X3DOMObject.Marker.mouseMove,true);
         Scene.element.addEventListener('mouseup',X3DOMObject.Marker.mouseUp,true);
+
+        // check for button released outside the window
+        $(window).on('mouseover.drag_marker',function(e) {
+            if (e && e.buttons===0 && Scene.markerToDrag) {
+                X3DOMObject.Marker.mouseUp.apply(self,[event]);
+            }
+        });
                 
     });
     
@@ -752,8 +760,10 @@ X3DOMObject.Marker.mouseUp = function(){
     }
     */
     
+    Scene.markerToDrag=null;
     Scene.element.removeEventListener('mouseup',X3DOMObject.Marker.mouseUp,true);    
     Scene.element.removeEventListener('mousemove',X3DOMObject.Marker.mouseMove,true);
+    $(window).off('.drag_marker');
     
     Scene.draggedTransformNode = null;
     Scene.draggingUpVec        = null;
@@ -768,6 +778,8 @@ X3DOMObject.Marker.mouseUp = function(){
 // from https://x3dom.org/x3dom/example/MovingObjectsWithDOMEvents.html
 X3DOMObject.Marker.dragStart = function(elem){
 
+    Scene.markerToDrag=elem;
+
     // move up from <shape> to <transform>
     var transformNode = $(elem).parent();
     var tr0 = $(transformNode).attr("translation");
@@ -825,7 +837,9 @@ X3DOMObject.Marker.mouseMove = function(event){
         if (!SETTINGS.slidingdrag){
             X3DOMObject.Marker.drag(event.offsetX - Scene.lastMouseX, event.offsetY - Scene.lastMouseY);
         }else{
+            Scene.markerToDrag.isPickable=false;
             var sr = Scene.element.runtime.shootRay(event.clientX,event.clientY);
+            Scene.markerToDrag.isPickable=true;
             if (sr.pickObject != null){
                 if (!$(sr.pickObject).hasClass("shapemarker")){
                     var sphere = Scene.draggedTransformNode.parent().parent();