Displaying three-dimensional virtual objects based on field of view

On a display device comprising a camera and a display, a method comprising:

• acquiring via the camera image data imaging an environment;
• from the image data, detecting a surface within the environment;
• receiving a user input requesting display of a three-dimensional virtual object;
• displaying the three-dimensional virtual object via the display as a stereoscopic virtual object;
• receiving a user input moving a position of the three-dimensional virtual object;
• detecting the three-dimensional virtual object being moved to within a threshold distance of the surface;
• displaying a change in an appearance of the surface proximate to a position of the three-dimensional virtual object;
• displaying the three-dimensional virtual object to appear as being positioned on the surface;
• and
• constraining movement of the three-dimensional virtual object to being along the surface.

An augmented reality display device comprising

• a depth camera;
• a see-through display;
• a logic subsystem;
• and
• a storage subsystem comprising instructions that are executable by the logic subsystem to
• acquire image data of an environment and monitor the environment via the depth camera,
• in the absence of a physical hand in the environment as determined from the image data, not displaying a menu,
• detect the presence of a physical hand in the environment based on the image data acquired by the depth camera, and
• in response, automatically display the menu as an augmented reality image via the see-through display.