首页 | 本学科首页   官方微博 | 高级检索  
     检索      

带两类形状参数的三次λμ-α-DP曲线的构造
引用本文:张迪,查东东,刘华勇.带两类形状参数的三次λμ-α-DP曲线的构造[J].山东大学学报(理学版),2019,54(9):114-126.
作者姓名:张迪  查东东  刘华勇
作者单位:安徽建筑大学数理学院, 安徽 合肥 230601
基金项目:安徽省高等学校自然科学研究项目(KJ2018A0518)
摘    要:构造了一种带两类形状参数的三次λμ-α-DP基函数,形状参数的引入有效地增强了DP曲线的形状控制能力。新的曲线不仅可以整体修改曲线的形状,而且具有局部可调性。分析了三次λμ-α-DP基函数以及曲线的性质,给出不同的参数取值对基函数和曲线形状的影响,以及曲线光滑连续拼接的条件:当满足一定的条件时,曲线可以达到G2连续另给出G1连续的旋转面利用奇异混合技术,在三次λμ-α-DP曲线中加入一类奇异混合函数,并分别对新曲线的相关性质和取不同参数时曲线的变化规律进行了论证。实例证明,改变调配参数的取值,可以调整奇异混合插值曲线与直线段的逼近程度,增强曲线的形状控制能力。

关 键 词:DP曲线  光滑连续  局部可调  奇异混合  调配参数  

Construction of the cubic λμ-α-DP curve with two kinds of shape parameters
ZHANG Di,ZHA Dong-dong,LIU Hua-yong.Construction of the cubic λμ-α-DP curve with two kinds of shape parameters[J].Journal of Shandong University,2019,54(9):114-126.
Authors:ZHANG Di  ZHA Dong-dong  LIU Hua-yong
Institution:School of Sciences and Physics, Anhui Jianzhu University, Hefei 230601, Anhui, China
Abstract:This paper constructs a type of cubic λμ-α-DP basic function with two kinds of shape parameters. It can effectively global or locally modify its shape. The properties of the cubic λμ-α-DP basis function and curve are analyzed. Moreover, the effect and modification ability of the basis function and the curve with different parameter values are illustrated through graphics. Smooth continuous conditions of the curve are deduced: they can meet with G2 continuous when certain conditions are met. G1 continuous rotating surfaces are also given. Furthermore, using the singular blending technique, the singular blending cubic λμ-α-DP interpolation curve with shape parameters is constructed. The properties of the curve and the influences of the curve with multiple parameters are presented. By changing the blending parameters, the approximation degree between the singular blending interpolation curve and its control polygon can be adjusted, thus enhancing the shape-control capability of the cubic λμ-α-DP interpolation curves.
Keywords:DP curve  smooth continuous  local adjustable  singular blending  blending parameters  
点击此处可从《山东大学学报(理学版)》浏览原始摘要信息
点击此处可从《山东大学学报(理学版)》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号