| 摘要 |
PROBLEM TO BE SOLVED: To eliminate excessive operations at the time of moving an object on a display image and to facilitate an operation by operating an intersection of a straight line and a configuration plane of a certain object, acquiring the configuration plane of the certain object including the intersection and moving and arranging another object on the configuration plane by utilizing characteristic points that preliminarily belong to the other object. SOLUTION: A pointer is positioned at an optional point (a) on an object, e.g. an optional point on a clock, a mouse is pressed down and a two-dimensional coordinate of the point (a) is acquired. After that, the pointer is moved by moving the mouse. And, a three-dimensional coordinate that corresponds to the twodimensional coordinate of a pointer position after the movement is acquired. Whenever the difference of a pointer position is recognized, an intersection operation is performed and a three-dimensional coordinate that corresponds to a two-dimensional coordinate of a pointer position is acquired. And, when a pointer position reaches another optional point of another object, a mouse button is released and the object is conclusively arranged. In such a case, the object turns to up and down in a normal line direction and in an up direction of three-dimensional space and is arranged on an optional configuration plane G1 of the other object whose other optional point is a configuration point. |
