Catch the moment when user takes a snap

steaq

Snap Lens Network Member Lens Studio Team

May 07, 2019 11:22

I must hide some UI elements the frame before the user takes a snap. To achieve this I need a sort of event firing and register a listener (or any other mechanisms). I was expecting this to be available as a SceneEvent among the ones listed here or as a Camera callback but it isn't?

So is there a way to catch the moment when the user takes a snap to execute some code just before the snap is actually taken?

Brandon / Apoc
Snap Lens Network Member Lens Studio Team

May 12, 2019 01:23
This is possible using one of the global methods.

global.scene has an isRecording() method that returns true when the user takes/is taking a video or a picture. If you put it in an update event it will fire the moment they take the picture.

https://lensstudio.snapchat.com/api/classes/ScriptScene/

```
```
function runOnPic(){
  // code to run when user takes a picture
}

var event = script.createEvent("UpdateEvent");
event.bind(function (eventData)
{
  if(global.scene.isRecording()){
     runOnPic()
   }
});
```
```
Comment actions Permalink
Brandon / Apoc
Snap Lens Network Member Lens Studio Team

May 12, 2019 01:23
This is possible using one of the global methods.

global.scene has an isRecording() method that returns true when the user takes/is taking a video or a picture. If you put it in an update event it will fire the moment they take the picture.

https://lensstudio.snapchat.com/api/classes/ScriptScene/
```
function runOnPic(){
  // code to run when user takes a picture
}

var event = script.createEvent("UpdateEvent");
event.bind(function (eventData)
{
  if(global.scene.isRecording()){
     runOnPic()
   }
});
```
Comment actions Permalink
Jonathan Solichin
Snap Lens Network Member Lens Studio Team

May 13, 2019 17:13
Hi Steaq,

Yep, you can do this by checking global.scene.isRecording() on update and calling your functions if it's true.

For example:
```
// -----JS CODE-----
// @input SceneObject target

if (global.scene.isRecording()) {
script.target.enabled = false;
}
```
Let me know if you need any clarification! Can't wait to see what you come up with.

Cheers,

Jon
Comment actions Permalink

Catch the moment when user takes a snap

We're here to help! We just need a little bit of information...

What system do you run Lens Studio on?

Follow the next steps to help us solve your issue:

Thanks for submitting this issue.

We'll try to resolve this issue as soon as possible. Thanks for letting us know about it!