| 摘要 |
PROBLEM TO BE SOLVED: To prevent a line (white line) forming a court from becoming hard to see or disappearing depending on the position of a virtual camera or glance direction in a ballgame such as a tennis game. SOLUTION: By moving the respective apexes of a line polygon forming a tennis court 10 on the basis of a height (h) of a virtual camera 20, the width W is increased. In that case, the width W of each of line polygons is increased toward the inside of the tennis court 10 so that the size of the tennis court 10 itself can not be changed. |
