Abstract: A method of presenting visual information to a user includes acquiring a first surface mesh relative to the user, acquiring a second surface mesh relative to the user, assigning a first physics layer to the first surface mesh, assigning a second physics layer to the second surface mesh, and prioritizing the first physics layer over the second physics layer independent of a relative position of the first physics layer and the second physics layer in a shared environment for interactions with a first object associated with the first surface mesh and a second object associated with the second surface mesh.

Abstract: A technique is described herein for determining the position of at least one previously-placed physical marker in a physical environment. In one approach, the technique detects the marker at plural vantage points in the environment, to yield plural instances of marker information. The technique then computes the position of the marker based on the plural instances of marker information collected at the plural vantage points. The technique may also provide a movement indicator that assists the user in moving to specified vantage points in the physical environment. The technique may use the identified position(s) of the marker(s) to accurately place virtual objects relative to real-world objects in a modified-reality world.

Abstract: A method of presenting visual information to a user includes acquiring a first surface mesh relative to the user, acquiring a second surface mesh relative to the user, assigning a first physics layer to the first surface mesh, assigning a second physics layer to the second surface mesh, and prioritizing the first physics layer over the second physics layer independent of a relative position of the first physics layer and the second physics layer in a shared environment for interactions with a first object associated with the first surface mesh and a second object associated with the second surface mesh.

Abstract: A technique is described herein for determining the position of at least one previously-placed physical marker in a physical environment. In one approach, the technique detects the marker at plural vantage points in the environment, to yield plural instances of marker information. The technique then computes the position of the marker based on the plural instances of marker information collected at the plural vantage points. The technique may also provide a movement indicator that assists the user in moving to specified vantage points in the physical environment. The technique may use the identified position(s) of the marker(s) to accurately place virtual objects relative to real-world objects in a modified-reality world.