function preload() {
  font = loadFont('data/miso-bold.ttf');
  joinedText = loadStrings('data/pride_and_prejudice.txt');
}
counting the words of a text and display them in a treemap diagram.

KEYS
r                   : toggle random mode
h                   : only horizontal rows
v                   : only vertical rows
b                   : both kind of rows
s                   : save png