Three.js hotspots

[Mugen87]

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How to create Sketchfab like annotations with Three.js?

Check this example I have created the hotspot/annotation but I can’t find a logic to detect a marker if it goes behind the camera’s field of view So I have tried a couple of methods already Based on distance between hotspot and camera didn’t work Angle between normal of hotspot and camera didn’t work Using raycasters is computationally heavy and hard to work with the scene just has a GLTF and hotspots and camera So I made render of GLTF to 1000 and hotspot to 1100 and set t…