Apparatus for controlling contents of a computer-generated image using 3d measurements

An apparatus for generating first data and second data for use in controlling a computer-generated image, the first data being dependent on a position of a first device relative to a second device, the second data being dependent on a position of the second device, the first device configured to be handheld and wielded in mid-air by a user, the second device configured to be taken along by the user, the apparatus comprising:

• a first sensing device for generating the first data, the first sensing device being sensitive to a position of the first device relative to the second device;
• and
• a second sensing device for generating the second data, the second sensing device being sensitive to a posit ion of the second device;
• wherein the first device contains at least one element of the first sensing device.

A non-transitory computer-readable medium or media storing computer-executable instructions for directing a computer to perform a method for controlling the contents of a computer-generated image in conjunction with an enclosure that contains a plurality of sensors and that contains a projection device,

• the plurality of sensors comprising
• an accelerometer and
• a gyro and
• a magnetometer and
• an image capturing device and
• a sensing device that is sensitive to a position of the enclosure and orientation of the enclosure;
• the method comprising the steps of:
• causing the projection device to project a plurality of distinct points,
• causing the image capturing device to capture a first image,
• receiving data that is dependent on an output of at least one of the plurality of sensors, and
• using the data to control the contents of the computer-generated image when the data depends on at least a part of the first image and the first image contains a second image of at least one of the plurality of distinct points.