RAY TRACING OBJECTS DEFINED BY SWEEPING A SPHERE

Wijk, J.J. van

RAY TRACING OBJECTS DEFINED BY SWEEPING A SPHERE

Date

1984

Authors

Wijk, J.J. van

Publisher

The Eurographics Association

Abstract

The basic calculation underlying ray tracing is that of the intersection of a line with the surfaces of an object. A method is presented here for performing this calculation for a new and powerful class of objects, those defined by sweeping a sphere of varying radius along a 3D trajectory. When polynomials are used for the parametrization of the centre and radius of the sphere, the intersection problem reduces to the location of the roots of a polynomial. An implementation is presented, together with sample applications.

        @inproceedings{10.2312:eg.19841005
,
booktitle = {Eurographics Conference Proceedings
},
editor = {K. BO and H.A. TUCKER
},
title = {{RAY TRACING OBJECTS DEFINED BY SWEEPING A SPHERE
}},
author = {Wijk, J.J. van
},
year = {1984
},
publisher = {The Eurographics Association
},
ISSN = {1017-4656
},
ISBN = {},
DOI = {10.2312/eg.19841005
}
}