• Title/Summary/Keyword: Pythagorean-hodograph cubics

Search Result 3, Processing Time 0.015 seconds

GEOMETRIC HERMITE INTERPOLATION FOR PLANAR PYTHAGOREAN-HODOGRAPH CUBICS

  • Lee, Hyun Chol;Lee, Sunhong
    • East Asian mathematical journal
    • /
    • v.29 no.1
    • /
    • pp.53-68
    • /
    • 2013
  • We solve the geometric Hermite interpolation problem with planar Pythagorean-hodograph cubics. For every Hermite data, we determine the exact number of the geometric Hermite interpolants and represent the interpolants explicitly. We also present a simple criterion for determining whether the interpolants have a loop or not.

HERMITE INTERPOLATION USING PH CURVES WITH UNDETERMINED JUNCTION POINTS

  • Kong, Jae-Hoon;Jeong, Seung-Pil;Kim, Gwang-Il
    • Bulletin of the Korean Mathematical Society
    • /
    • v.49 no.1
    • /
    • pp.175-195
    • /
    • 2012
  • Representing planar Pythagorean hodograph (PH) curves by the complex roots of their hodographs, we standardize Farouki's double cubic method to become the undetermined junction point (UJP) method, and then prove the generic existence of solutions for general $C^1$ Hermite interpolation problems. We also extend the UJP method to solve $C^2$ Hermite interpolation problems with multiple PH cubics, and also prove the generic existence of solutions which consist of triple PH cubics with $C^1$ junction points. Further generalizing the UJP method, we go on to solve $C^2$ Hermite interpolation problems using two PH quintics with a $C^1$ junction point, and we also show the possibility of applying the modi e UJP method to $G^2[C^1]$ Hermite interpolation.