A New Practical Approach for Procedurally Representing Lofted Surface  

作　　者：Fang kui (National University of Defense Technology 410073) 

出　　处：《计算机工程》1994年第S1期496-499,共4页Computer Engineering

摘　　要：Fitting a surface using geometric information (for example: an arbitrary set of 3D curves) is a useful method for comstructing complex surfaces. Tensor-product B-splines usually is used to constructe so-called lofted surfaces and most other types of surfaces in CAD, but several problems must be overcome if B-spline are to represent complex lofted surfaces[1]. We describe a practical approach by using an approximating Hermite type of surface, the construction of the surface is easy. Finally, a lofted surface model is given.Fitting a surface using geometric information (for example: an arbitrary set of 3D curves) is a useful method for comstructing complex surfaces. Tensor-product B-splines usually is used to constructe so-called lofted surfaces and most other types of surfaces in CAD, but several problems must be overcome if B-spline are to represent complex lofted surfaces[1]. We describe a practical approach by using an approximating Hermite type of surface, the construction of the surface is easy. Finally, a lofted surface model is given.

关 键 词：OVERCOME approximating arbitrary SPLINE CAGD parametric BEZIER NURBS CUBIC offset 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]