| 摘要 |
PROBLEM TO BE SOLVED: To input the length or angle of a designated segment and to carry out a graphic edition and a graphic display corresponding to the values by changing the position information of the vertex of a graphic so that another segment brought into contact with each changing vertex is linked and changed by a means which calculates the position information of each vertex. SOLUTION: In the case of changing shape (length), a segment whose the length should be changed is selected for a prepared graphic 34 and the standard of a point to be fixed is selected from 41-45. In the case of selecting a fixed point left/top 41, a point pertinent to the left side between the both end points of the segment is regarded as a fixed point. Provided, that a point pertinent to the upper side between the both end points of the segment is regarded as a fixed point in the case of a vertical line. In the case of selecting tangent linkage 51, the length of a segment 402 or the angles of angles 408 and 409 are changed according to the position of a changing point 405. In the case of selecting tangent independence 52, the position of the segment 402 is not changed even when the position of the point 405 is moved. That is, a graphic 31 is turned into an open graphic and graphic data whose vertexes are increased by one are re-constructed. |
