Next: Modeling Natural Phenomenon
Up: Conic Sections and
Previous: Rational Quadratic Bezier
 Conics as NURBS (Ellipse)

which implies
 Conics as NURBS (Hyperbola)


 which implies:
 Conics as NURBS (Parabola)


 which implies:
 Not Unique

 x,y,w are not unique
 Numerator and denominator can be multiplied by a common
(positive) factor
 For Example, A Common Alternative Form:


 which derives from rewriting:
CS488/688: Introduction to Interactive Computer Graphics
University of Waterloo
Computer Graphics Lab
cs488@cgl.uwaterloo.ca