We want to see way more pixels on our page. There's no way anyone wants to sit and buy each individual pixel. Instead, what we're going to do is write a script, that will take an image and a location as input, and then submit the necessary transactions to geth to color those pixels.

Before we can do that, though, we need to write a script that will read an image. We're going to use the get-pixels library to read images.

First, let's create a scripts folder to save this utility script.

The rest of the script can be found in scripts/buy-pixels-001-read.js below

// Usage: node scripts/buy-pixels.js resourhelmet-mario-running.gif 700 450

// First we'll requite get-pixels

const getPixels = require('get-pixels');

// Next we process the commandline arguments.

// For a real commandline tool I'd use something like yargs, but we'll just use process.argv for now.

// The arguments will be the imagePath, the x position and the y position.

let imagePath = process.argv[2];

let xPos = parseInt(process.argv[3]);

let yPos = parseInt(process.argv[4]);

console.log(imagePath, xPos, yPos);