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Kudan: Is it possible to call a function when a marker is detected?

I am using Kudan AR framework https://www.kudan.eu/ to develop iPhone app on Xcode 7.3.1.

I am able to reproduce the basic like how to setup model and tracker. When a marker is detected in an ARCameraViewController, an armodel successfully appears in the camera view.

My situation is: I want to call a function when a marker is detected in ARCameraViewController. The function may be print("hello") or download something.

How may we achieve this?

Solution

  • You want to use:

    - (void)addTrackingEventTarget:(id)target action:(SEL)action forEvent:(ARImageTrackableEvents)event;

    e.g.

    [trackable addTrackingEventTarget:self action:@selector(imageDetected:) forEvent:ARImageTrackableEventDetected];

    You can find a bit more documentation about this in Kudan's API docs https://wiki.kudan.eu/apidocs/iOSDocs/db/de1/interface_a_r_image_trackable.html#ae5329511da8f0b137e2d472e52c22e95