Repeat current step

I am not sure if the repeat is a valid model service so that in generally we need to check in the console windows if there some errors should be reported. In case that an error occurs there probably the current function will be terminated or part of code will be ignored.

Regarding to the current intent here - to have an "repeat" occurrence for a particular sequence step.

I tested the issue in a HoloLens project and found the following approach . Is not perfect but seem to work - also in the HoloLens

The model widget is 'model-1' and have sequence with 5 steps

Calling the 'play' command it will play always the current sequence in a infinite loop. With stop we can stop the loop and with next or back we could go to the next or to the previous step. (here next and back addtionaly will stop first the loop and then will go to the next/previous step

This was my test in preview . But I tested it on the HoloLens and it was working.

So I used the following code:

/////////////////////////////////////
$scope.app.loop_play=false; //when loop is playing is true
$scope.app.stepNumber=1;
$scope.app.nextStep=2;
$scope.app.duration=0.0;
$scope.app.stepActive=false;
$scope.app.setInActive=false; //set inactive for one time the call on complete event

$scope.app.modelName='model-1';
$scope.app.delay=3000;

////////////////////////////////////
$scope.app.play_test = function () {


console.log("called .app.play_test() for currentStep="+ $scope.view.wdg[$scope.app.modelName]['currentStep']);

 if ($scope.app.loop_play) 
 {
 $scope.app.stop_test();

 $scope.app.loop_play=true;
 $scope.app.setInActive=false;
 //my_play_loop(parseInt($scope.view.wdg[$scope.app.modelName]['currentStep']),$scope.app.duration );
 my_play_loop($scope.app.duration );
 }
else
 {
$scope.app.loop_play=true;
//my_play_loop(parseInt($scope.view.wdg[$scope.app.modelName]['currentStep']),150 ); 
 my_play_loop(150); 
 }
};
/////////////////////////////////////////
$scope.app.stop_test = function () { 
 $scope.app.loop_play=false; 
 $scope.app.setInActive=true;
 $timeout( (function () { $scope.$applyAsync(()=>{ $scope.app.MDL_STOP($scope.app.modelName);} )})
 , 100); };
/////////////////////////////////////////
$scope.app.next_test = function () { 
 $scope.app.loop_play=false; $scope.app.setInActive=true;
 $timeout( (function () { $scope.$applyAsync(()=>{ $scope.app.MDL_STOP($scope.app.modelName);} )})
 , 100);
 $timeout( (function () { $scope.$applyAsync(()=>{ $scope.app.MDL_FORWARD($scope.app.modelName);} )})
 , 100); };
/////////////////////////////////////////
$scope.app.back_test = function () { 
 $scope.app.loop_play=false;
 $scope.app.setInActive=true;
 $timeout( (function () { $scope.$applyAsync(()=>{ $scope.app.MDL_STOP($scope.app.modelName);} )})
 , 100);
 $timeout( (function () { $scope.$applyAsync(()=>{ $scope.app.MDL_REWIND($scope.app.modelName);} )})
 , 100); };
///////////////////////////////////////
 
$scope.app.ANG_SCOPE = function(model_name) { 
return angular.element(document.getElementById(model_name)).scope(); };
////////////////////////////////////////
$scope.app.MDL_PLAY=function (model_name) { $scope.app.ANG_SCOPE(model_name).play();};
////////////////////////////////////////
$scope.app.MDL_RESET=function (model_name) { $scope.app.ANG_SCOPE(model_name).reset();};
////////////////////////////////////////
$scope.app.MDL_REWIND=function (model_name) { $scope.app.ANG_SCOPE(model_name).rewind();};
////////////////////////////////////////

$scope.app.MDL_FORWARD=function (model_name) { $scope.app.ANG_SCOPE(model_name).forward();};
////////////////////////////////////////
$scope.app.MDL_STOP=function (model_name) { $scope.app.ANG_SCOPE(model_name).stop();};
////////////////////////////////////////

//------------
function my_play_loop( delay)
{
 if(!$scope.app.loop_play) return; //will stop if loop play is not true 
 
 $timeout(function () { $timeout(function () {$scope.app.MDL_PLAY($scope.app.modelName); }, 200);
 
 }, delay);
};
/////////////////////////////// 'stepcompleted'
$scope.$on('stepcompleted', function(evt, arg1, arg2, arg3) { 
 var parsedArg3 = JSON.parse(arg3);
 console.warn(arg3);
 console.log("stepcompleted stepNumber="+parsedArg3.stepNumber + " nextStep="+parsedArg3.nextStep);
 if((parsedArg3.stepNumber) && (!$scope.app.setInActive) ) {
 $timeout( (function () { $scope.$applyAsync(()=>{ $scope.app.MDL_REWIND($scope.app.modelName);} )})
 , 100); 
 my_play_loop( $scope.app.play_test); 
 } 
$scope.app.stepNumber=parseInt(parsedArg3.stepNumber);
$scope.app.nextStep=parseInt(parsedArg3.nextStep);
$scope.app.duration=parseFloat(parsedArg3.duration);
$scope.app.stepActive=false; 
 $scope.app.setInActive=false;
}); 
/////////////////////////////////////////////////////////////////
$scope.$on('stepstarted', function(evt, arg1, arg2, arg3) { 
 var parsedArg3 = JSON.parse(arg3); 
 console.warn(arg3); 
 console.log("stepstarted stepNumber="+parsedArg3.stepNumber);
 $scope.app.stepNumber=parseInt(parsedArg3.stepNumber);
$scope.app.nextStep=parseInt(parsedArg3.nextStep);
$scope.app.duration=parseFloat(parsedArg3.duration);
 
}); 

The mean idea was to use the 'stepcompleted' event and to call it some timeout the repeat action- here it is a rewind and play.

Also I used some variables to know the parameter of the current step. Actually  I did used them  but in some cases it could be advantage to have this info for some synchronization tasks.So the HoloLens test project could be used for test -> 15614:70

I hope this could help! If not then , please, let me know