Methods and devices for rendering interactions between virtual and physical objects on a substantially transparent display

A computing device comprising:

• at least one processor;
• and
• data storage comprising logic executable by the at least one processor to:
• display a user-interface on a display, wherein the user-interface comprises a view region;
• display a virtual object in the view region, wherein the virtual object is displayed at a focal length from the display along a first line of sight;
• determine a physical distance, along a first line of sight, between the display and a physical object;
• determine that the focal length is substantially equal to the physical distance to the physical object, such that the virtual object and the physical object appear substantially co-located in the view region;
• and
• responsive to the determination that the focal length is substantially equal to the physical distance, initiate a collision action between the virtual object and the physical object, wherein the collision action comprises a graphical modification of the virtual object, and wherein the graphical modification of the virtual object comprises the computing device causing the virtual object to move away from the physical object.

A non-transitory computer-readable medium having stored therein instructions executable by a computing device to cause the computing device to perform functions comprising:

• displaying a user-interface on a display of a computing device, wherein the user-interface comprises a view region;
• displaying a virtual object in the view region, wherein the virtual object is displayed at a focal length from the display along a first line of sight;
• determining a physical distance, along the first line of sight, between the display and a physical object;
• determining that the focal length is substantially equal to the physical distance to the physical object, such that the virtual object and the physical object appear substantially co-located in the view region;
• and
• responsive to the determination that the focal length is substantially equal to the physical distance, initiating a collision action between the virtual object and the physical object, wherein the collision action comprises a graphical modification of the virtual object, and wherein the graphical modification of the virtual object comprises the computing device causing the virtual object to move away from the physical object.