Patent ID: 6236403
Filing Date: 2001-05-22
Classification: G06T

Abstract:
A method of modeling a 3-dimensional object, comprising the steps of:performing one of a rounding operation generating the 3-dimensional object from a control grid and an inverse rounding operation generating a control grid from the 3-dimensional object depending on which one of the control grid and the 3-dimensional object is newly provided, the control grid including a plurality of edges and a plurality of vertexes, the 3-dimensional object including a plurality of boundary curves and a plurality of curved surfaces;deforming the control grid by shifting the plurality of vertexes;performing the rounding operation when the control grid is deformed so as to introduce the deformation of the control grid to the 3-dimensional object;attaching a weight to one of the plurality of vertexes of the control grid to deform a corresponding one of the plurality of curved surfaces of the 3-dimensional object;attaching a weight to one of the plurality of edges of the control grid to deform a corresponding one of the plurality of boundary curves of the 3-dimensional object; andattaching information on a respective weight to a corresponding one of the plurality of vertexes and the plurality of edges as an attribute thereof.