Body-centric content positioning relative to three-dimensional container in a mixed reality environment

A computerized process performed under control of program instructions executed by one or more hardware processors of a mixed reality system, the process comprising:

• displaying to a user, on display of a headset worn by the user, three-dimensional (3D) content that is contained within a prism, the prism having multiple surfaces that define a volume in which the 3D content is displayed;
• displaying a content item at a first fixed position relative to the prism, said content item being distinct from the 3D content;
• sensing movement of the user relative to the prism;
• and
• in response to the sensed movement, repositioning the content item to a second fixed position relative to the prism, said second fixed position based at least partly on a pose of the user while the user is inside the prism;
• wherein the first and second fixed positions are within a reserved region of the prism that is reserved for content other than said 3D content.

A mixed reality system, comprising:

• a head-mountable display configured to be worn by a user;
• one or more sensors configured to sense movement of the user;
• and
• a computing system comprising one or more processors, the computing system programmed with executable instructions to display, on the head-mountable display, three-dimensional (3D) content that is contained within a prism, the prism having surfaces that define a bounded volume, the prism having a fixed position in a real-world environment of the user;
• wherein the computing system is configured to display a content item at a first fixed position relative to the prism, and to maintain the content item accessible to the user by repositioning the content item to a second fixed position relative to the prism in response to sensed movement of the user relative to the prism, wherein the first and second fixed positions fall within a reserved region of the prism, said reserved region reserved for content other than said 3D content.

A mixed reality system, comprising:

• a head-mountable display configured to be worn by a user;
• one or more sensors configured to sense movement of the user;
• and
• a computing system comprising one or more processors, the computing system programmed with executable instructions to display, on the head-mountable display, three-dimensional (3D) content that is contained within a prism, the prism having surfaces that define a bounded volume, the prism having a fixed position in a real-world environment of the user;
• wherein the computing system is configured to display a content item at a first fixed position relative to the prism, and to maintain the content item accessible to the user by repositioning the content item to a second fixed position relative to the prism in response to sensed movement of the user relative to the prism, the second fixed position being based at least partly on a pose vector of the user while the user is inside the prism, said content item being distinct from the 3D content;
• wherein the sensed movement comprises a change in a pose of the user while the user is inside the prism, and the computing system is responsive to the change in pose by repositioning the content item from a first surface of the prism to a second surface of the prism, said second surface being perpendicular to the first surface.