| 摘要 |
A method and apparatus for navigation display when a graphic element is to be created in relation to a graphic element which has already been generated on a two-dimensional CAD system. A position which may possibly be indicated is displayed for navigation to allow the user to produce a drawing on a display screen with improved operation efficiency. In order to display particular points of a graphic element close to a cursor, a search range for searching for the graphic element is first obtained. Then, the present position of the cursor is obtained, and an identifier of the graphic element in the search range around the present cursor position is obtained. All particular points of the obtained graphic element are determined, and displayed on the display screen. One of the determined particular points which is closest to the cursor is determined, and displayed in emphasis on the display screen.
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