Possible to run in the command line?

[thoppe]

This is super cool and I'm excited that you open-sourced it! I'm coming from a python background and I'd like to use the output somehow as a starting point for other programs. Is there a way to call this from the command line so I can script it? I tried using nodejs, but I got stuck trying to require the library properly.

Feel free to close it as this may be out of scope for supporting this use case.

const ATCQ = require('./atcq.js');
var getPixels = require("get-pixels");

var f_image = "./sample_image_small.jpg";

var pixels = getPixels(f_image, function(err, pixels) {
    if(err) {
	console.log("Bad image path")
	return;
    }
    console.log("got pixels", pixels)    
    
    const palette = ATCQ.quantizeSync(pixels, {
	maxColors: 32
    }); 
    console.log(palette);    
});

Which gave:

nodejs demo.js
got pixels View3dbuffer {
  data: <Buffer fe f9 f1 ff fe f9 ef ff fe f9 ef ff fc fa ed ff fd fb ee ff fe fc f1 ff fe fc f3 ff fd fb f2 ff fb fb ef ff fb fb ef ff fb fb f1 ff fb fb f1 ff fb fb ... >,
  shape: [ 200, 284, 4 ],
  stride: [ 4, 800, 1 ],
  offset: 0 }
/home/hoppeta/projects/palette/atcq/atcq.js:16
  atcq.quantize();
       ^

TypeError: atcq.quantize is not a function
    at Function.quantizeSync (/home/hoppeta/projects/palette/atcq/atcq.js:16:8)
    at /home/hoppeta/projects/palette/atcq/demo.js:19:26
    at handleJPEG (/home/hoppeta/projects/palette/atcq/node_modules/get-pixels/node-pixels.js:44:3)
    at doParse (/home/hoppeta/projects/palette/atcq/node_modules/get-pixels/node-pixels.js:114:7)
    at /home/hoppeta/projects/palette/atcq/node_modules/get-pixels/node-pixels.js:190:7
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:511:3)

[mattdesl]

Thanks for testing! Actually there was a typo in my code, I've just fixed it in atcq@1.0.3.

You can also see demo/extract.js which runs on the command-line with Node.js.

[thoppe]

Thanks @mattdesl, it works perfectly now! For anyone else searching for this in the future, here is the expected output for atcq@1.0.3 using the supplied baboon image and const maxColors = 32; const targetColors = 5;

Progress: 31%
Progress: 58%
Progress: 83%
Progress: 100%
Finished quantizing:
[ { color: '#eb5236', weight: 0.35426846511505555 },
  { color: '#98c2e1', weight: 0.34554147457861195 },
  { color: '#ce8980', weight: 0.10969570621543237 },
  { color: '#38322e', weight: 0.10299427188488527 },
  { color: '#4a5e49', weight: 0.08750008220601485 } ]