tetrahedral surface

In this paper, it is presented that the locus of a line crossedwith each of two guide lines and a guide conic not being on a commonplane is a ruled surface of fourth order.

本文提出了由一条二次曲线和与该二次曲线不共面的两条异面直线为导线，与该三导线均相交的直线轨迹是一个直纹四次曲面，并讨论了二次曲线分别为椭圆、双曲线和抛物线时，形成的曲面的形状特征。

It is presented that the locus of a line crossed with each of two guide line and a guide conic not being on a common plane is a ruled surface of fourth order.

提出了由一条二次曲线和与该二次曲线不共面的两条异面直线为导线，与该三导线均相交的直线的轨迹是一个直纹四次曲面，并对该曲面的特性作了一些初步探讨。

In this paper,novel methods for spatial curves smoothing by EMD and four-side region surfaces smoothing with 2D separable EMD are presented.

四边域曲面沿每条U,V线进行EMD光顺处理,得到光顺后曲面。

Smooth Connection between Multisided S-Patch and Rectangular Bézier Patches;

多边S-面片和四边Bézier曲面的光滑拼接

Modeling Research on Quartic Rational Bézier Curve and Surface

四次有理Bézier曲线曲面造型的研究

Approximate Merging of 4 Neighbouring Triangular Bézier Surfaces with Boundary Constraints

带边界约束的4片相邻三角Bézier曲面的近似合并

The Rational Approximation of Planar Bézier Offset Curve;

平面Bézier曲线的等距曲线有理逼近

Study and Application of C-Bézier Curves and Surfaces of Degree n;

高阶C-Bézier曲线曲面性质研究及其应用

Research on Bézier Curves and Surfaces with Shape Parameter;

带形状参数的Bézier曲线曲面的研究

Research on a Number of Triangular Bézier Curves and Surfaces with Parameters;

三角Bézier参数曲线曲面的若干研究

Bézier Curves and Surfaces Represented by the Shifting Operator;

Bézier曲线曲面的位移算子表示形式

Research on Bézier-Type Curve and Surface with Shape Parameters

带形状参数Bézier型曲线及曲面的研究

Research of the Continuity for CE-Bézier Curves and Surfaces

CE-Bézier曲线曲面光滑拼接的研究

Control method of Bézier curve based on inside polygon;

贝齐尔(Bézier)曲线的内控制多边形方法

Constructing of G~2 Quartic Bézier Interpolation Curve

G~2四次Bézier插值曲线的构造

New Extensions of Quadric Bézier Curve with Multiple Shape Parameters

带多形状参数的四次Bézier曲线的新扩展

Study on shape of G~2 continuity for quartic rational Bézier curve

G~2连续的有理四次Bézier曲线的造型

Degree Reduction of 4-degree C-Bézier Curves

四次C-Bézier曲线的降阶逼近研究

On calculating Bézier surface area;

Bézier曲面面积计算的离散算法

Approximate Merging of a Pair Tensor Product Bézier Surfaces

两相邻张量积Bézier曲面的近似合并

Procedure of Intersection and Trimming for Composite Triangular Bézier Surface

复合三角Bézier曲面求交和裁剪的实现