| 摘要 |
PROBLEM TO BE SOLVED: To transfer and display three-dimensional dynamic image data at higher speed without restricting expression. SOLUTION: When apex numbers (1, 2 and 3) constituting a part of the surfaces of a solid are generated in a first frame and a new moving apex (a) which is generated from an apex 1 in a second frame, a polygon 701 moves to a polygon 701a and two polygons 702 and 703 are newly generated, the change is described with '1, 2, 3:a(011)' as a difference. The description of '1, 2, 3:a' shows that the polygon 701 constituted of the apex numbers (1, 2 and 3) changes into the polygon 701a constituted of the apex numbers (a, 2 and 3). The part of '(011)' becomes the flag of '1' when the part of the triangle (polygon) except for the mentioned triangles exists and becomes the flag of '0' when the part of the triangle except for the triangles does not exist. |
