now gnu-ized A raytracer does not require custom code for (shadows, mirrors) like GL: it uses physics to simulate light to make realistic images, leaving one to specify only what is in the scene. (at a cost of speed) Rayshade is a 1990's raytracer, a great one back then (and still useful). Rayshade has an excellent easy to read yet informative User's Guide that other's could not help but copy from. Rayshade has no GUI but as a text language it's simple and elegant. The Utah Raster Toolkit liburt is a "depends" (install before Rayshade) unless using Rayshade-Mathematica (reads raw RGB). 4.0.9 is patched for "ray4mm" to partly allow alpha channel without URT (a simple change allows chan setting in img header if used). Allows "textsurf" to do clear background textures, see ERRATA) Rayshade Quick Reference is visible on the Files page.
Tao3D is a programming language for real-time interactive 3D
Tao3D is a programming language for real-time interactive 3D. It lets you easily create dynamic, interactive, data-rich presentations, small applications, user interface concepts, and more.
Program for drawing 3D surfaces from parametric equations
Descend is an open source program for drawing 3D surfaces from parametric equations. It uses a custom, very fast language called Misc to calculate the geometry. It also uses OpenGL to render scenes with high quality shaders. Website: https://descend.mimec.org/