Details about the content types handled by sparcl
sparcl supports different content with different functionality and levels of difficulty to prepare.
The simplest content type are the placeholders. So called because the record in the content discovery doesn’t link to an actual 3D object, but defines it. The actual 3D object is generated client side by sparcl.
The next step up in terms of visual quality are 3D models in gltf format. They loose interactivity, though.
Imported 3D scenes can have any functionality possible with the 3D framework they’re created, as long as it is possible within a sandboxed iframe element.
SOUND SCRs play geo-anchored spatial audio from refs[0].url (for example audio/wav). There is no in-scene mesh. Browsers may block unmuted playback until the user has started an immersive session or otherwise unlocked audio; see the video autoplay notes in the engine video helpers.