3D object attached to the screen

  • Hey Maureen,

    Sounds like you're interested in including a first person attached object into the Lens. Have you seen this guide yet? Let us know if this wasn't the effect you were going for and we can further direct.

    Cheers,
    Kaitlyn

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  • Hello Kaitlyn,

    Thank you for your answer. I tried to follow the guide you sent me but the problem is still there :

    The view I have on Lens Studio : 


    The view I have on iPhone X :

    And the view I have on a Huawei :

     

    So I still don't know how to attach them to the borders of the screen :/

    Thanks, 

    Maureen

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  • Hi Maureen,

    You can use a script to convert screen a space position to world space and then move your object there.

    1. Make sure your flag objects are children of the camera you'd like them to draw them. This will fix problems if you're using the DeviceTracking component.

    2. Add the following script to each of your flag objects, making sure it's binded to the "Initialize" event.

    //@input Component.Camera cam
    //@input vec2 screenPoint
    //@input float distFromNear = 40.0

    script.createEvent("LateUpdateEvent").bind(function(){
    var pos = script.cam.screenSpaceToWorldSpace(script.screenPoint, script.distFromNear);
    script.getTransform().setWorldPosition(pos);
    });

    3. For each flag object, set "cam" to your camera.

    4. Adjust "screenPoint" to the screen space position you'd like the flag to stick to. (0.0, 0.5) would be the left side of the screen, centered vertically, and (1.0, 0.5) would be the right side of the screen, centered vertically.

    5. Adjust "distFromNear" to change how far away the flag will be positioned from the camera's near plane.

     

    If you're having issues, make sure your flag object's origin point is where you want it anchored to the screen (most likely the base of the flag). This will also only affect position and not scale, which you would have to calculate and apply in a similar way.

    Hope this works for you! Let me know if you have any questions.

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