Research Of The Scupltting System Based On The Triangle Bezier Surface

In this paper, the geometry modeling technology and the theory and methods of the freeform curve and surface, together with the applied, opening and mini-sculpting system software for moulding empoldered for the HeNan JiuDing stock company have been analyzed and researched systematically in the course of mutual curve-surface sculpting. The key problem of selecting the original point and the iterative-convergent has been solved by using the triangle-Bezier surface protruding-property and the division principle. Secondly, the problem of the curve-surface mutual transforming and smooth-finishing have been analyzed farther.For the surface intersecting problem: Owing to the introduction of the boundary points, as long as the intersecting points on a certain line, the full intersecting line can be gained. The intersecting line either intersects at the boundary of the triangle surface or forms the loop; During the course of tracking, the selecting of the pace is restricted by the curvature, the number of the gained intersecting points are not in proportion as the chord-length; the intersecting points not only record the coordinate and store the parameter.For the data-storage of the surface, the data of the Surface, Patch and Vertex have been stored by using the grid-frame formed by three chain-table. So the lookup of the data is easy and the redundancy of the storage is small.This system software is an application based on the Windows2000 by using the Visual C++6.0 as a tool, with the principle of practicability, opening, expansibility, good economy and supportability.