| 摘要 |
A game environment is presented where the 3-D object is properly transitioned from the player's field of view. For example, the perceived position of the 3-D object in the real 3-D space is measured, and if the distance from the display exceeds a threshold, the system will perform a linear blending on the object to gradually transition the object out of the player's field of view. As another example, the distance of the object from a virtual camera can be measured in a virtual space and if the distance comes within a threshold value, the system will fade the object from the display. As a further example, the distance of the object from a predefined reference plane in the virtual space can be measured to determine the object's perceived visual distance in the real 3-D space and if the object exceeds a predetermined threshold value, the object will begin fading from the display. This allows the object to smoothly transition from the screen before the object distracts the player or appears unnatural, while at the same time leaving the visual appearance of the object intact and allowing the virtual camera to move freely, without limitations. |
