Released 25th February 2024. A new build of version 1.9.3 of the Polyray raytracer may be downloaded from here:
Polyray is a popular abandonware free raytracer which was ported to Windows and updated. There are new plans for Polyray which may include a new open source version.
Source code has been posted on GitHub:
https://github.com/cwebdesign/polyray19pub
The program Polyray is a rendering program for producing scenes of 3D shapes and surfaces. The means of description range from standard primitives like box, sphere, etc. to 3 variable polynomial expression, and finally (and slowest of all) surfaces containing transcendental functions like sin, cos, log. It may be used from the command line or from within TextPad.
Some videos illustrating the use of Polyray.