Mathematical Problems in Engineering
Volume 2 (1996), Issue 6, Pages 487-497

Surface normals and barycentric coordinates

Glen Mullineux

School of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK

Received 15 January 1996; Revised 19 February 1996

Copyright © 1996 Glen Mullineux. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The normal to a triangular parametric surface is investigated where the parameters used are barycentric coordinates. Formulae for the normal are obtained for non-rational and rational surfaces.