Load different Sequence via JS on HoloLens 2.

Hello Roland, 
thank you for your advice. It works on my laptop, but the HoloLens doesn't manage to open the correct Sequence even through this. Unfortunately, this also leaves me in the default sequence (-- Choose a resource --) 

Is there another command to change the sequence via JS?

Best regards 

Jonas 

Hi @sgreywilson ,

thanks for the feedback. Yes , I agree that with the suggested code (calling the play service form the sequenceloaded event)  we will ensure that the sequence is  complete loaded when we try to play a step (or all steps) . In some cases when the sequence is very long the small timeout could possibly will not work. So means that the sequence is not initialized yet when we try to play. Because this calls are asynchronous – in this case the play will be ignored. Therefore we can “outsource” the call of play outside the function and set some variable which will be check in the sequenceloaded  callback -  in this case my original code should be changed to some code like this:

 $scope.playSeq4Step=false
 $scope.playStepNumber=1
//////////////
//definition of the function
$scope.app.playModelStep = function (sequence,modelName,step_number,play) {
//sequnece -sequnece name e.g. TestFigure1 - as shown in UI
//modelName - model name e.g. model-1
//step_number - set this number to current step
//play true/false execute play for the model

 
$scope.$applyAsync(()=>{$scope.setWidgetProp(modelName, 'sequence', '');});


 $timeout(function () {
 $scope.$applyAsync(()=>{$scope.setWidgetProp(modelName, 'sequence', 'app/resources/Uploaded/l-Creo 3D - '+sequence +'.pvi');}); 
 
 },50);

 
 // this will be commeted , because it will be outsources in the 'sequenceloaded'
 //$timeout(function () {angular.element(document.getElementById(modelName)).scope().play(); }, 100);
 //use here the setting of variable
 $scope.playStepNumber=step_number // the current step
 $scope.playSeq4Step=play //set variable for playing in the sequenceload event
 

};
//////////////////////////////////
$scope.$on('sequenceloaded', function(evt, model, type, sequence) {
$scope.$applyAsync(()=>{$scope.setWidgetProp(modelName, 'currentStep', parseInt($scope.playStepNumber));},50);

if( $scope.playSeq4Step) { // check if variable is set to play
 //call the play with some delay to be sure that stepNumber is set
 $timeout(function () {twx.app.fn.triggerWidgetService(model, 'play');}, 200);
 $scope.playSeq4Step=false
 }
 
}); // end of event
//==========
...
...
// later call example
$scope.app.playModelStep("Figure 1","model-1",3,true)




 

I think one problem we could have with this approach . If we have many modelwidgets and different functions which will try to set a sequences and then play a step in this case  we need to check for which  modelwidget (check event callback argument) is the sequenceload event called and who (which funciton) was the caller (this could be based on passing variable settings)

Here an example for the sequenceload event where we check the arguments:

$scope.$on("sequenceloaded", function (evt, arg) {
 console.log("sequence loaded, starting play");
 console.warn("arg:");
 console.warn(arg); //this should be a model-1 means a model widget
 //where the sequence was loaded
 let metaDATA=PTC.Metadata.fromId(arg.toString())
 // ========= starting here handling of meta data for arg modelwidget
 metaDATA.then(function(meta) { console.log("success func of metaData"); 
 }) .catch(function(err) 
 {console.log("problem with the read of metadata ");console.warn(err);}); 
 //========= 
});