Hi there
I'm trying to use Javascript switch statement to feed instruction to Label/ValueDisplay widgets.
But somehow I couldn't get the correct currentStep from my model via Javascript.
var crntStep = 0;
$scope.updateInst = function(){
crntStep = $scope.view.wdg['model'].currentStep;
$scope.view.wdg['valueDisplay'].label = 'current sequence: ' + $scope.view.wdg['select'].value;
$scope.$watch("view.wdg['model'].sequence", function(seq){
switch(seq){
case 'l-Creo 3D - seq-1.pvi':
switch(crntStep){
case 1:
$scope.view.wdg['valueDisplay'].value = 'STEP 1/3 of seq-1';
break;
case 2:
$scope.view.wdg['valueDisplay'].value = 'STEP 2/3 of seq-1';
break;
case 3:
$scope.view.wdg['valueDisplay'].value = 'STEP 3/3 of seq-1';
break;
default:
console.log('seq-1 default break');
}
break;
case 'l-Creo 3D - seq-2.pvi':
switch(crntStep){
case 1:
$scope.view.wdg['valueDisplay'].value = 'STEP 1/3 of seq-2';
break;
case 2:
$scope.view.wdg['valueDisplay'].value = 'STEP 2/3 of seq-2';
break;
case 3:
$scope.view.wdg['valueDisplay'].value = 'STEP 3/3 of seq-2';
break;
default:
console.log('seq-2 default break');
}
break;
default:
console.log('model default break);
}
});
}
3D model
['model'] has 2 sequences 'seq-1' and 'seq-2', each has 3 steps.
2D widgets
['select'] gets list from ['model'].sequenceList and send value to ['model'].sequence via vuforia studio Binding
['valueCheck'] gets value from ['model'].currentStep via vuforia studio Binding
['valueDisplay'] gets label and value with javascript function updateInst()
When I select one of those sequences, ['valueCheck'].value updates its value to 1.
Whilst the variable remains undefined, therefore the ['valueDisplay'].value is not updated correspondingly.
Why ['valueCheck'].value is updated successfully, but not the ['valueDisplay'].value?
Is it possible to use switch statement with switch statement?
Any response is welcomed.
Thanks a lot.
ACCEPTED SOLUTION
Accepted Solutions
Hi @dsgnrClarK ,
I do not think that the code will work as it is in the post.
Why not:
- you will track in the $watch the change of the sequence – right? But this will only occur when you change in the select the sequence. This will not call a play and will not change the step number. When you play later the model this will not call the $watch construct – so that the current step will here never update – because it is not inside the $watch construct.
If you place it inside the $watch then it will get always one because when you change the sequence it will be always 1. When you play the sequence step 1..2….3 it will not update.
I modified it to 2 different $watch for the currentStep and for the sequence and I think this will work.
So, I tested the following code:
/////////////////////
$scope.updateInst = function(){
//crntStep = $scope.view.wdg['model-1'].currentStep;
$scope.$watch("view.wdg['model-1'].sequence", function(seq){
console.log("calling $watch for seq="+seq)
$scope.view.wdg['valueDisplay'].label = 'current sequence: ' + $scope.view.wdg['select-1'].value;
//=============================
switch(seq){
case 'l-Creo 3D - Figure 1.pvi':
$scope.view.wdg['valueDisplay'].value = 'STEP 1/3 of seq-1';
break;
case 'l-Creo 3D - Figure 2.pvi':
$scope.view.wdg['valueDisplay'].value = 'STEP 1/3 of seq-2';
break;
default:
console.log('model default break');
}
//============================
});
$scope.$watch("view.wdg['model-1'].currentStep", function(crntStep){
var seq =$scope.getWidgetProp('model-1', 'sequence')
console.log("crntStep="+crntStep)
$scope.view.wdg['valueDisplay'].label = 'current sequence: ' + $scope.view.wdg['select-1'].value;
//=============================
switch(seq){
case 'l-Creo 3D - Figure 1.pvi':
switch(parseInt(crntStep)){
case 1:
$scope.view.wdg['valueDisplay'].value = 'STEP 1/3 of seq-1';
break;
case 2:
$scope.view.wdg['valueDisplay'].value = 'STEP 2/3 of seq-1';
break;
case 3:
$scope.view.wdg['valueDisplay'].value = 'STEP 3/3 of seq-1';
break;
default:
console.log('seq-1 default break');
}
break;
case 'l-Creo 3D - Figure 2.pvi':
switch(parseInt(crntStep)){
case 1:
$scope.view.wdg['valueDisplay'].value = 'STEP 1/3 of seq-2';
break;
case 2:
$scope.view.wdg['valueDisplay'].value = 'STEP 2/3 of seq-2';
break;
case 3:
$scope.view.wdg['valueDisplay'].value = 'STEP 3/3 of seq-2';
break;
default:
console.log('seq-2 default break');
}
break;
default:
console.log('model default break');
}
//============================
});
}
The basic principle is that when you change a sequnece then you have to set step number 1.
And when you play - change the step then it is alway the 'old' already known sequence....
