| 主权项 |
1. A method of producing an electronic geometric model with a computer system, the method comprising:
accessing electronic data, the electronic data comprising polygonal data representing a surface; receiving an indication from a user; the indication indentifying first and second vertices; and in response to the indication, automatically retopologizing a region of the polygonal data, wherein the automatically retopologized region comprises a plurality of faces and a plurality of edges, wherein retopologizing the region comprises:
the computer system adding additional vertices to the polygonal data, wherein the additional vertices defines a plurality of quadrilaterals,
the computer system determining whether a next pair of potential additional vertices would cause a next potential quadrilateral to encompass a region of the polygonal data having a topology greater than a threshold, the next potential quadrilateral having edges of a length approximately equal to the distance between the first and second vertices,in response to the next pair of potential additional vertices causing the next potential quadrilateral to encompass a region having topology less than the threshold, the computer system adding next vertices to the polygonal data, wherein the next vertices partially define an additional quadrilateral, wherein each of the edges of the additional quadrilateral has a length about equal to the distance between the first and second vertices, andin response to the next pair of potential additional vertices causing the next potential quadrilateral to encompass a region having topology greater than the threshold, the computer system adding next vertices to the polygonal data, wherein the next vertices partially define an additional quadrilateral, wherein one or more edges of the additional quadrilateral has a length different from the distance between the first and second vertices. |
