~jakob/lisp-raytracer-zoo

[cl] Define a proper system.
[cl] Fix `ray-color'.
[cl] Handle name collision.
[cl] Remove use of option type.
fixup! Set `*read-default-float-format*'.
[cl] Use native vectors instead of a `vec3' struct.
Set `*read-default-float-format*'.
[cl] Earmuff dynamic variables.
Fix `degrees->radians'.
Some style changes.

Replace (pack ...) with [...]; replace max/min with math.max/math.min.

Eschew globals.
[fennel] Finalize implementation.
[fennel] Implement shape intersection.
[fennel] Implement test image.
Update README.md
[gerbil] Commit unfinished raytracer.
[cl] Complete implementation.
[cl] Implement shape intersection.
[cl] Add ray, vec3 test.
[r6rs] Add implementation.
[r7rs] Fix portability issues.
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