| 摘要 |
PURPOSE:To easily input a basic transformation matrix, by calculating a three- dimensional basic transformation matrix being projected on a plane stretched by a vector in an instructed direction. CONSTITUTION:An origin output means 14 started up by a control means 13 reads an X-coordinate value and a Y-coordinate value stored in an origin storing means 12, and indicates a point on the screen of a picture display means 11. Next, the control means 13 starts up an in-screen two-dimensional position designating means 15. On completing a process by the in-screen position designating means 15, the control means 13 starts up a basic transformation matrix calculating means 17. The basic transformation matrix calculating means 17 calculates the basic transformation matrix, and stores it in a basic transformation matrix storing means 18. A picture synthesizing means 19 displays an image in which a rectangular parallelepiped stored in a substance storing means 10 is projected on the screen of the display means 11 through the use of a matrix stored in the matrix storing means 18, on the display means 11. |
