| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which makes a player interested in a game over a long period by reducing a processing burden and displaying a dynamic background picture. SOLUTION: A three-dimensional picture processing part reads a planar object expressing lightning, gives matrix arithmetic operations to the respective coordinates of polygons constituting the object and transforms the form of the object such as expansion/contraction, rotation around a shaft center and horizontal inversion. By deforming the mode of a texture in accordance with the form of the transformed object and sticking the texture to the object, the background picture concerning the lightning showing expansion/contraction, rotation around the shaft center and horizontal inversion is realized. As a result, the form of the object is converted sequentially and the texture is sequentially stuck to the individual objects to display the dynamic background picture. |
