| 摘要 |
PROBLEM TO BE SOLVED: To enable a player to easily grasp the difference of elevation from a fixed view point by setting an arbitrary point in a three dimensional virtual apace as the reference point and placing a semitransparent filter at a pint at a prescribed distance from the set reference point. SOLUTION: A reference setting means 1 is set an arbitrary point in a three dimensional space as the reference point P. A semitransparent filter S is placed by a filter placing means 2 onto a point at a prescribed distance from the set reference point P. When the semitransparent filter S direction is viewed from the set reference point P in that state, a matter at a point at more than the prescribed distance from the reference point in the elevation direction, i.e., upward or downward direction, is viewed through the semitransparent filter causing the display image of the matter is masked by the semitransparent filter. Thus a player can easily grasp the difference of elevation from a fixed view point, on sensor switch 35. Thus a player can enjoy a game doing exercises. |
