Patent ID: 6337685
Filing Date: 2002-01-08
Classification: G06T

Abstract:
A three-dimensional model generation system for generating three-dimensional models, comprising:a geometry-generating/editing section that is capable of changing an edge of a three-dimensional model into a fillet or a chamfer; a three-dimensional data storage section storing geometry data items associated with respective features generated or edited by said geometry-generating/editing section, on a feature-by-feature basis, and when any of said respective features is a fillet or a chamfer, further storing data concerning an edge erased as a result of generation of said any of said features, as data of a former edge associated with said fillet or said chamfer; a feature management section obtaining any of said geometry data items stored in a state associated with a corresponding one of said features from said three-dimensional data storage section, in response to a request sent from said geometry-generating/editing section, for obtaining three-dimensional data of said any of said features; and a former edge data management section obtaining said data of said former edge from said three-dimensional data storage section in response to a request sent from said geometry-generating/editing section to said feature management section, for obtaining three-dimensional data concerning said feature of said fillet or said chamfer, and generating three-dimensional display data from said data of said former edge, wherein said former edge is displayed for selection, based on said three-dimensional display data obtained via said feature management section and said former edge data management section according to designation of said fillet or said chamfer, and said former edge is utilized to set a reference point with reference to which a dimension line is drawn when a drawing is prepared.