yonatan

// Commented version of https://twitter.com/zozuar/status/1441384708441456651
// Google-translated (with some editing) from @gam0022's version

float i, // Ray marching loop counter
e, // Volume density (the smaller the value, the higher the density)
s, // FBM scale (and loop counter)
g, // Ray's distance (also used for tunnel twirl and camera prespective)
k = .01; // Handy constant

// Ray marching loop

karlrohe

# PCA on n=6990 images of handwritten 2's, each with d = 784 pixels.

# install.packages("remotes")
# remotes::install_github("jlmelville/snedata")
#  thank you jlmelville for making this data so easy to access!
library(snedata)
library(magrittr)
library(Matrix)
library(rARPACK)