| 摘要 |
PROBLEM TO BE SOLVED: To reasonably acquire and produce a sight line operator to a practical operation by converting a view point or a view point vector into a polar coordinate, appropriately changing the parameter of the polar coordinate by an input device and controlling a display state of a three-dimensional space form that is shown as a two-dimensional image. SOLUTION: Three-dimensional numerical data is stored in a storage device 2 and an operation processor 1 performs an operation based on the numerical value and shows it on a display device 3. For instance, based on the shape of an object, view point data about observing the object in which direction, sight line data, observation data, etc., are stored as three-dimensional numerical data in the device 2, the processor 1 performs projective transformation (projective projection or parallel projection) and shows representation such as a plane and a line as observation video of a three-dimensional object on a display plane (screen) of the device 3 as a two-dimensional visible image. |
