| 摘要: |
| 应用复分析和曲线积分方法研究了满足Hermite插值的五次PH曲线的构造,导出了其相应的Bézier表示.所得五次PH插值曲线不但具有连续的单位切矢和有向曲率,而且其弧长函数是原参数的多项式函数,具有精确的有理Offset代数表示和优美的几何解释,可灵活处理拐点. |
| 关键词: 五次PH曲线 Hermite插值 有向曲率 光顺 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(69973041);国家重点基础研究发展规划973资助项目(G1998030600);浙江省自然科学基金资助项目(698025) |
|
| Hermite Interpolation by PH Quintic |
|
CHEN Guo dong,WANG Guo jin
|
| Abstract: |
| Using complex analysis and curve integration, the construction of PH quintic which satisfies Hermite interpolation conditions is studied in this paper and its corresponding Bézier representation is derived. The PH quintic has continuous unit tangents and signed curvature, and its arclength function is the polynomial of its parameter. The PH quintic has offset curve that admits exact rational algebraic representation, intuitive geometrical interpretation and can flexibly deal with inflection point. |
| Key words: PH quintic Hermite interpolation signed curvature fairness |
