| 摘要 |
PROBLEM TO BE SOLVED: To improve flexibility in design by enabling a user to generate a phase structure according to user's own intention as needed by providing a means for concealing the phase structure, and forming a three-dimensional(3D) shape only in geometrical structure. SOLUTION: A geometrical structure is provided as the subject, the phase structure is minimized, namely, the minimum phase structure is held in the system, and that structure is concealed so as not to be seen by the user. Namely, the phase structure is concealed by generating the data of curved surfaces from the geometrical information of curved lines while having only the curved line data of surrounding curved lines without having any curved surface data. A phase element is used just for expressing the adjacent relation between the set of curved surfaces and curved line streams inside the system and is not explicitely handled. Ordinarily the phase element has a geometrical element, but inversely in this case the geometrical element has the phase element as needed so that the phase element and geometrical element can be mutually referred to for mounting. The object visible for the user is the geometrical element only and this becomes the object of operation. |
