Bézier curves with shape parameters
Yan Lan-lan
Abstract
Yan Lan-lan
Abstract
A class of polynomial functions of 4th-degree with two parameters is presented,which is the extension of quadratic Bernstein and cubic λ-B basis functions.Then using the de Casteljau arithmetic,the generalized basis function of degree n +2 with two shape parameters is obtained.Based on this,a new type of curve with two shape parameters is defined.The new curve contains generalized Bezier curves and λ-Bezier curves.The properties of the new basis and the new curve are analyzed.Meanwhile,the geometry meaning of the shape parameters and the geometric drawing method of the new curve are given.
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A class of polynomial functions of 4th-degree with two parameters is presented,which is the extension of quadratic Bernstein and cubic λ-B basis functions.Then using the de Casteljau arithmetic,the generalized basis function of degree n +2 with two shape parameters is obtained.Based on this,a new type of curve with two shape parameters is defined.The new curve contains generalized Bezier curves and λ-Bezier curves.The properties of the new basis and the new curve are analyzed.Meanwhile,the geometry meaning of the shape parameters and the geometric drawing method of the new curve are given.
Key concepts: Bézier curve, Mathematics, Shape parameter, Basis function, Basis (linear algebra), Bernstein polynomial, Degree (music), Quadratic equation