raycastQuery(from:allowing:alignment:)
Creates a raycast query that originates from a point on the view, aligned with the center of the camera’s field of view.
Declaration
func raycastQuery(from point: CGPoint, allowing target: ARRaycastQuery.Target, alignment: ARRaycastQuery.TargetAlignment) -> ARRaycastQuery?Discussion
When you call this function, ARKit creates a ray that extends in the positive z-direction from the argument screen space point, to determine if any of the argument targets exist in the physical environment anywhere along the ray. If so, ARKit returns a 3D position where the ray intersects the target.