# Rational Cubic Bézier Curves

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This Demonstration shows a rational cubic Bézier curve, with green marks at two-thirds the distance of the points and to the intersection of and . When you drag the points and to the green marks and set the parameter to 1, the resulting curve is equivalent to a normal () quadratic Bézier curve with points , , and , where is the red point of intersection. This is not the case if .

Contributed by: Alexis Luengas Zimmer (September 2012)

Based on a program by: Isabelle Cattiaux-Huillard and Gudrun Albrecht

Open content licensed under CC BY-NC-SA

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detailSectionParagraph## Permanent Citation

"Rational Cubic Bézier Curves"

http://demonstrations.wolfram.com/RationalCubicBezierCurves/

Wolfram Demonstrations Project

Published: September 28 2012