| 摘要 |
An entertainment device comprises a display, an object position detector to detect a three-dimensional position of an object in front of an image plane of the display, and a source position detector to detect a source position of a pointing source with respect to the display. A pointing direction indicates a direction in which the pointing source is pointing. The device also comprises a direction detector to detect a pointing direction of a user control device. The pointing direction of the user control device is associated with the pointing direction, so that a change in the pointing direction of the user control device causes a change in the pointing direction of the pointing source. The device also comprises an alignment detector to detect whether the three-dimensional position lies on a line passing through the source position in the direction of the pointing direction of the pointing source. |
