A new approach to the 'hidden line' problem

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Abstract
This paper presents an approach to hidden line removal which relies on three-dimensional objects being described in terms of a series of inter-connected spatial cells. Avenues of sight through the openings between cells are explored in the process of generating display information for a perspective picture from a given viewpoint. An implementation on a small computer with a graphics display is described, and the performance of the program is illustrated by photographs of some views which were generated in a few seconds. Data preparation for the examples involved the definition of the space surrounding the objects by means of a special purpose data structure.

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