OSX_BareBonesRayMarching

Bare bones ray marching demo for the Mac using Swift 4.2 and Metal.

It takes surprisingly few lines of code to draw a ray marching fractal with Swift and Metal.
Here's an example..

Was originally trying to make this the smallest/simplest app I could, but couldn't resist adding
more and more fractal equations. Finally stopped after 50 fractals.

This is still a simple app; everything about it stays the same for all the fractals.
Just changes to the GUI to access the equation parameters, and the
Distance Estimation routine for the RayMarching algorithm in the shader.

Update: Added video recording.
You can define an array of keyframes that are interpolated to produce a smooth animation video.

Includes equations for fifty 3D fractals :
MandelBulb , Apollonian , Apollonian2 , Jos Leys Kleinian
MandelBox , Quaternion Julia , Monster , Kali Tower , Polyhedral Menger
Gold , Spider , Knighty's Kleinian , EvilRyu's KIFS
IFS Tetrahedron , IFS Octahedron , IFS Dodecahedron , IFS Menger
Sierpinski Tetrahedron , Half Tetrahedron , Full Tetrahedron , Cubic
Half Octahedron , Full Octahedron , Kaleidoscopic
Knighty Polychora , QuadRay , 3Dickulus FragM
3Dickulus Quaternion Julia , 3Dickulus Quaternion Mandelbrot
Kali's MandelBox , Spudsville , Menger Smooth Polyhedra
Menger Helix , Flower Hive , Jungle , Prisoner , Pupukuusikkos Spiralbox
Aleksandrov MandelBulb , SurfBox , TwistBox , Kali Rontgen , Vertebrae
DarkBeam Surfbox , Buffalo Bulb , Ancient Temple , Kali 3D
Klienian Sponge, Floral Hybrid, Torus Knot, Donuts

Update: Finally added OrbitTrapping colorizing effects