requirebin sketch

index.js

var render = require('ndarray-canvas')
var zeros = require('zeros')
var cave = require('cave-automata-2d')
var fill = require('ndarray-fill')
var canvas = document.createElement('canvas')

// Create an empty ndarray,
// 60 units wide and
// 18 units high
var array = zeros([500, 300])

canvas.width = 500
canvas.height = 300

function up() {
  // Regenerate the cave, iterating 10 times
  cave(array)(10)
  amplify(array)
  
  // Converts the ndarray to text and replace
  // the contents of our <pre> element
  render(canvas, array)

  // And repeat
  setTimeout(up, 1250)
}

// Brightens the ndarray up from
// a range of 0-1 to 0-255.
function amplify() {
  return fill(array, function(x, y) {
    return array.get(x, y) * 255
  })
}

up()
document.body.appendChild(canvas)

minified.js

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