waifu-generator

waifu-generator

Write random anime girl pictures on file system, using Nodejs, thanks to thiswaifudoesnotexist.net

Usecase ?

You need to generate random pngs for testing purposes, but js-image-generator is definitely too efficient and boring for the job?

Look no further! TheRealBarenziah(tm) brings you this StyleGAN2-empowered*,industrial grade, uwu-compliant, yet unlicensed module!

Compatibility

node >= 8 (we're using promises)

Use

npm i --save-dev waifu-generator

tl;dr

• options object is facultative
• options.filename default to null
• options.path default to null
• options.skipFs default to false; pass true to skip the fs.createWriteStream() call
• options.withoutPrefix default to false; pass true to remove 'data:image/png;base64,' prefix from returned string
• options.mosaic default to null; enable to create a mosaic of waifus. Infos here

The Long Read

Case 1 : default (no option object)

In your generate.js file :

const generateWaifu = require("waifu-generator");

generateWaifu()
  .then(res => console.log(res))
  .catch(e => console.error(e));

Back in terminal (for the example):

node ./generate.js
# ...will write a random image file in cwd (current working directory).
# The filename will follow the pattern "$imageId_$uuid.png",
#     where $imageId is the image id for thiswaifudoesnotexist.net,
#     and $uuid some uuidv4 generated on the fly

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVQYV2NgYAAAAAMAAWgmWQ0AAAAASUVORK5CYII=

# Since we logged the return value with .then(res => console.log(res))
# a base64 string representation of our image is printed in stdout.
# It is facultative, but may come in handy. You can check the string by copypasting it 
# into your favorite browser, or whatever. Just know it's there, in the resolve value !

Case 2 : providing an option object

In your generate.js file :

const generateWaifu = require("waifu-generator");

const options = {
  filename: "sugoi_kawaii",
  path: "./__TESTS__/images"
};

generateWaifu(options);

Back in terminal:

node ./generate.js
# ...will write a random image file in "./__TESTS__/images",
#     with "sugoi_kawaii.png" as its filename.
#
# No output since we didn't explicitely '.then(res => console.log(res));'

Case 2.5: skip the fs call

Sometimes, you don't want your tests to do I/O operations (typically when you're after performance). In that case you can skip the filesystem call entierely, leaving you to work with pure base64 strings, ready to be allocated.

Barebone example:

const generateWaifu = require("waifu-generator");

const yourCustomFunc = async () => {
  const base64waifu = await generateWaifu({ skipFs: true });

  const output = base64waifu.toString().toString().toString(); 
  // Example of arbitrary filth you're free to inflict to your base64 waifu here

  console.log(output); // printing our stuff
  return output;
};

yourCustomFunc();

NB: Activating skipFs will indeed make the path/filename options irrelevant !

Mosaic

Available from 2.0.0 onward. Opt-in by defining option.mosaic:

tl;dr

const waifuGenerator = require("./index")

waifuGenerator({
  filename: "mosaic", // indeed compatible with other waifu-generator options
  mosaic: {
    number: 2, // mandatory; must be integer in 1-99 range
    options: { // facultative merge-img option object
      direction: true,
      color: 0x000000
    }
  }
})

Full story

Made this a major release because it adds some bloat (jimp + merge-img dependencies).
If you don't need this feature, you better stick to good ol' 1.1.1

So why this update ?

Initial pool of images being only 100000, there was a chance to get duplicates.
Also, I needed to be able to generate some FAT files (>32Mb and >64Mb) for my test suite.
This option will generate a mosaic of waifus so the possibilities becomes 100000 * a lot.
The option.mosaic.number param is mandatory and must be in the 1-99 range.
The option.mosaic.options is optional: it enable you to use merge-img option object in case you need it.
With this the possibilities becomes 100000 * a lot * A LOT.
I know math, you can twust this number owo. Example output with mosaic.number = 3:

Clean your mess

This (somewhat) unbloated module doesn't support file deletion. To do that, it's your responsibility, as a developer, to chose the correct approach between using the awesome fs API, using higher level libs, or going for OS level operation.

..Of course you're also free to skip the hassle by using the skipFs parameter !

Take advantage of this module being unlicensed: please fork away and write the best solution for your specific need :)

BTW

Please don't read this seriously. This JavaScript does little more than exploiting the awesome work that was done on thiswaifudoesnotexist, so please pay them a visit and click their footer links :)