| 摘要 |
PROBLEM TO BE SOLVED: To shorten the processing time without damaging reality when a display object is formed and displayed as a simple object by rotating the simple object in a direction decided so as to set the non-display direction in the same direction as the eye direction of a viewpoint to composite picture. SOLUTION: When a tree, etc., is formed as a plane simple object to composite the picture, it is formed so as to be rotated based on the direction of line of sight regardless of the positions of the whole simple objects to be displayed. In this game device, an arithmetic processing part 20 adds a viewpoint information arithmetic part 22 calculating viewpoint information adding live-of-sight information of the viewpoint which is moved and rotated in a virtual three- dimensional space and a direction information arithmetic part 24 obtaining direction information of the simple object. A picture synthesizing part 40 adds a simple object rotating part 42 rotating the simple object based on direction information which is calculated by the direction information arithmetic part 42 when the display object to be displayed is the simple object. |
