NE FONCTIONNE PAS

inspiration https://twitter.com/AkiyoshiKitaoka/status/1389828814696378368

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IMAGE https://pixabay.com/fr/photos/papillon-fleurs-insectes-p%C3%A9tales-6170999/

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v1 pour traiter les pixels

https://medium.com/@colinpatrickreid/creating-impressionistic-art-with-photography-and-p5-js-e073d794aa40

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voir aussi https://www.youtube.com/watch?v=FVYGyaxG4To 7.8: Objects and Images  de the coding train

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voir aussi https://idmnyu.github.io/p5.js-image/Layers/index.html

*/

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let img ;

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function preload() {

  img = loadImage("butterfly_640.jpg");

}

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function setup() {

  print( img.width, img.height ) ;

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  image( img, 0, 0 );

  /*

  img.loadPixels();

  for (x = 0; x < img.width; x++) {

     for (y = 0; y < img.height; y = y++) {

        index = (floor(x) + floor(y) * img.width) * 4;

        red = img.pixels[index]

        blue = img.pixels[index + 1]

        green = img.pixels[index + 2]

        alpha = img.pixels[index + 3]

        //pixel_brightness = (red + blue + green) / 3

        fill(red,blue,green,alpha)

        rect(x,y,1,1)

      }

  }

  */

}