Event emitted when marker is recognized?

[donmccurdy]

Does the <a-marker/> primitive emit any events?

I'm responding to a question on aframe-extras, and not sure what if any events are fired, or if there's another way to trigger something happening when marker is scanned. Thanks!

[karneaud]

Does this still hold true? I'm seeing becameVisible and makerVisible....which one?

[donmccurdy]

I see mentions of both in search, but no code that would emit them and no documentation about it. If someone has tested and they're working, that would be great.

[karneaud]

@donmccurdy actually there is a commit branch by @NikolayMihaylov that I tried out and it works perfectly so far using the emitevents="true" attribute. However it seems it is yet to be merged. perhaps a petition should be done to make this merge happen

[jeromeetienne]

events arent settled in the three.js API, and even less in the aframe api.

In fact i just looked https://github.com/jeromeetienne/AR.js/blob/master/aframe/src/component-anchor.js

and no event is emitted at all

[donmccurdy]

Thanks @jeromeetienne! I think #303 would fix this, do you want a version of that PR that excludes the build files?

[peterlunglum]

@donmccurdy @jeromeetienne ,

Is the emitevents officially part of the main code base?

[donmccurdy]

No, the official codebase does not emit any events when a marker is recognized. While the API may not be settled, I think some event or other will be important for many use cases and would recommend merging #303 or something like it.

[donmccurdy]

Is an event emitted now, or is this not feasible?

[nicolocarpignoli]

this is merged #303 and works with (not with a-marker-camera apparently) :)

[donmccurdy]

Awesome, thanks!