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Showing content from http://developer.mozilla.org/en-US/docs/Web/API/XRFrame/createAnchor below:

XRFrame: createAnchor() method - Web APIs

XRFrame: createAnchor() method

Limited availability

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The createAnchor() method of the XRFrame interface creates a free-floating XRAnchor which will be fixed relative to the real world.

See XRHitTestResult.createAnchor() for creating an anchor from a hit test result that is attached to a real-world object.

Syntax
createAnchor(pose, space)
Parameters
pose

An XRRigidTransform object with the initial pose where the anchor should be created. The system will make sure that the relationship with the physical world made at this moment in time is maintained as the tracking system's understanding of the world evolves.

space

An XRSpace object the pose is relative to.

Return value

A Promise resolving to an XRAnchor object.

Examples Creating an anchor
frame.createAnchor(anchorPose, referenceSpace).then(
  (anchor) => {
    // Do stuff with the anchor (assign objects that will be relative to this anchor)
  },
  (error) => {
    console.error(`Could not create anchor: ${error}`);
  },
);
Specifications Browser compatibility See also

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