Landmarker Question

eL Be

Snap Lens Network Member Lens Studio Team

September 13, 2019 09:26
Edited

Dear Support team,

As I understood, I can define a distance towards the Landmark at which the lens gets triggered, right? what happens now if I trigger the lens and approach the landmark? Is there a possibility to bring up a hint that stops me from further approaching the Landmark itself?

I have a virtual 3d fence in the foreground and would love to use that as a "stop approaching" obstacle. Could you tell me how I would trigger a hint that appears as soon as I walk closer to the fence?

Thanks for your help.
Cheers eL

Olha

Snap Lens Network Member Lens Studio Team

September 18, 2019 17:55

Hi, el Be!

Yes, you can easily do it!

You can add this script to your project :

//@input Component.DeviceLocationTrackingComponent locationTracking

//@input Component.MarkerTrackingComponent markerTracking

//@input SceneObject camera

//@input SceneObject distanceTarget

//@input SceneObject hint

//@input int minDistance = 50

var locationFound = false;

var targetTransform = script.distanceTarget.getTransform()

var cameraTransform = script.camera.getTransform();

script.locationTracking.onLocationFound = wrapFunction(script.locationTracking.onLocationFound, function () { locationFound = true; print("found") });

script.locationTracking.onLocationLost = wrapFunction(script.locationTracking.onLocationLost, function () { locationFound = false; print("lost") });

// next lines are to make it work on a debug mode

if (script.markerTracking){

    script.markerTracking.onMarkerFound = wrapFunction(script.markerTracking.onMarkerFound, function () { locationFound = true; print("found") });

    script.markerTracking.onMarkerdLost = wrapFunction(script.markerTracking.onMarkerdLost, function () { locationFound = false; print("lost") });

}

script.createEvent("UpdateEvent").bind(checkDistance);

function checkDistance() {

    var targetPos = targetTransform.getWorldPosition();

    var distance = cameraTransform.getWorldPosition().distance(targetPos) / 100; //in Meters

    if (distance <= script.minDistance && locationFound) {

        if (!script.hint.enabled) {

            script.hint.enabled = true;

        }

    }

    else if (script.hint.enabled) {

        script.hint.enabled = false;

    }

}

function wrapFunction(origFunc, newFunc) {

    if (!origFunc) {

        return newFunc;

    }

    return function () {

        origFunc();

        newFunc();

    };

}

Here is a setup example:

Let me know if there are any questions

Best

Olha

eL Be
Snap Lens Network Member Lens Studio Team

September 18, 2019 20:36
Olha,

wow.thank you very much.that´s awesome.

thank you.

eL
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