The influence parameters /spl beta//sub 1 / and /spl beta//sub 2 / have on bibeta spline curved surface

This paper discusses how Bera spline curve with geometric continuity is influenced by the changc of parameters B
₁
and B
_{2, offers the range of parameters BI and and presents thc algorithm principles of bibeta spline curved surface that is controlled by double paramcters. Based on all above, a Freedom Surface Modeling System (FSMS) is designed and some examples are verified and analyzed.}