Skip to main content

Advertisement

Log in

Visually continuous quartics and quintics

Visuell stetige quartische und quintische Kurven

  • Published:
Computing Aims and scope Submit manuscript

Abstract

We present a Bézier representation of visually continuous quartics and quintics. Explicit formulas are given for the conversion of the Bézier representation to and vice versa a Hermite-like representation, defined by the continuity conditions. Positivity conditions which insure properties like convex hull and variation diminishing properties are given.

Zusammenfassung

Gegeben wird eine Bézier-Darstellung visuell stetiger quartischer und quintischer Kurven. Es werden explizite Ausdrücke für die Konversion der Bézier in und vice versa eine Hermite Darstellung, definiert durch die Stetigkeitsbedingungen, angegeben. Es werden Positivitätsbedingungen, die Eigenschaften wie z.B. die Eigenschaften der konvexen Hülle und der Variationsreduktion sichern, gegeben.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

Explore related subjects

Discover the latest articles, news and stories from top researchers in related subjects.

References

  1. Barsky, B A, De Rose, T D: Geometric continuity of parametric curves. University of California, Berkeley, Computer Science Division (EECS), Technical Report # UCB/CSD 84/205 (1984)

  2. Böhm, W: Smooth curves and surfaces. In: Farin, G. (ed.) Geometric Modelling: Algorithms and New Trends. SIAM (1987) 175–184

  3. Böhm, W.: Visual continuity. Computer-aided design, Vol. 20, No. 6 (1988) 307–311

    Google Scholar 

  4. Degen, W.: Some remarks on Bézier curves. Computer Aided Geometric Design, Vol. 5, No. 3 (1988) 259–268

    Google Scholar 

  5. Dyn N, Edelman, A, Micchelli, Ch A: A locally supported basis function for the representation of geometrically continuous curves. Oldenburg Verlag, München, Analysis7 (1987) 313–341

    Google Scholar 

  6. Eck, M, Lasser, D: B-Spline-Bézier Representation of Geometric Spline Curves. Preprint Nr. 1254, Technische Hochschule Darmstadt (1989)

  7. Geise, G.: Über berührende Kegelschnitte einer ebenen Kurve. ZAMM Zeitschr. für Angewan. Mathematik Mech. 42, Heft 7/8 (1962) 297–304

    Google Scholar 

  8. Goodman, T N T: Properties ofbeta Splines. Journal of Approximation Theory44 (1985) 132–153

    Google Scholar 

  9. Hoschek J, Wissel, N: Optimal approximate conversion of spline curves and spline approximation of offset curves. Computer-aided design, Vol. 20, No. 8 (1988) 475–483

    Google Scholar 

  10. Lasser, D, Eck, M: Bézier Representation of Geometric Spline Curves. A general concept and the quintic case. Technical Report # NPS-53-88-004, Naval Postgraduate School, Monterey, CA 93943 (1988)

    Google Scholar 

  11. Pottmann, H.: Curves and Tensor Product Surfaces with Third Order Geometric Continuity. Proceedings of the Third International Conference on Engineering Graphics and Descriptive Geometry. Vienna, Austria, Vol. 2 (1988) 107–116

    Google Scholar 

  12. Sablonniére, P.: Spline and Bézier polygons associated with a polynomial spline curve. Computer-aided design, Vol. 10, No. 4 (1978) 257–261

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lasser, D. Visually continuous quartics and quintics. Computing 45, 119–129 (1990). https://doi.org/10.1007/BF02247878

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02247878

AMS Subject Classifications

Key words

Navigation