| 摘要 |
PURPOSE:To change a prismatic graphic produced two-dimensionally into a shape turned three-dimensionally. CONSTITUTION:The apex coordinate value which shows two-dimensionally a prismatic graphic is inputted through an apex coordinate value input means 1 and stored in an apex coordinate value storage means 2. Meanwhile the information necessary for the rotary processing like a rotation mode, a tilt angle, a rotational angle, etc., are inputted through a rotation mode input means 3, an inclination input means 4, and a rotational angle input means 5 respectively and stored in a graphic information storage means 6. If the prismatic graphic is turned around an axis parallel to the columnar direction, for example, based on those input information, a coordinate transforming function calculating means 7 draws out a coordinate transforming function to apply the geometric processing to the upper surface of the graphic. Then a coordinate transforming means 8 converts the upper surface graphic based on the coordinate transforming function. Thus the rotated coordinates are obtained and the contents of the means 2 are changed. Then a graphic generating means 9 produces such a graphic that is turned three-dimensionally around the axis set in the columnar direction. |
