Towards the multivariate simplotope spline: continuity conditions in a class of mixed simplotopic grids
Numerical Analysis
2016-02-04 v1
Abstract
Smooth joins of simplex Bernstein-B\'ezier polynomials have been studied extensively in the past. In this paper a new method is proposed to define continuity conditions for tensor-product Bernstein polynomials on a class of mixed grids that meets certain out-of-facet parallelism criteria. The conditions are derived by first defining a simplex around the simplotopic bases of the tensor-product polynomials. Then the continuity conditions in the multivariate simplex spline defined on the resulting simplices, are adapted to hold for the tensor-product polynomials. The two- and three-dimensional results agree with the results found in the literature. It is expected that the method can be employed in more general grids.
Cite
@article{arxiv.1602.01335,
title = {Towards the multivariate simplotope spline: continuity conditions in a class of mixed simplotopic grids},
author = {Tim Visser and Cornelis C. de Visser and Erik-Jan van Kampen},
journal= {arXiv preprint arXiv:1602.01335},
year = {2016}
}