| 摘要 |
PURPOSE:To maintain and manage data of high efficiency and adaptability by holding the three dimensional form of an object as the skeleton form of the object and a three dimensional graphic unit passing through the skeleton form of the object. CONSTITUTION:A control means 1 controls an entire of a device and input information is stored in an input information storing means 2. An object management means 4 manages the name and the registered date of the object. The mutual linkage of the skeleton form of the three dimensional object is maintained in a phase structure holding means 5 and the form of an arc constituting the skeleton is held in an arc form holding means 6. The attribute of a segment constituting the arc is held in an arc attribute holding means 7 and the attribute of a node of both the end points of the arc is held in a node attribute holding means 8. In a graphic form holding means 10, the form of the three dimensional graphic unit having an axis passing through the arc is held and in a position relation holding means 9, the position of the three-dimensional graphic unit on the arc is held. A form retrieving means 3 can extract the form of a required object. |
