Processing.js

Pointillism

Original by Daniel Shiffman, embedded using Javascript by John Resig, modified to use IDL example data by Michael Galloy

Mouse horizontal location inside image controls size of dots. Creates a simple pointillist effect using ellipses colored according to pixels in an image.

Pointillism

PImage a;

void setup()
{
  a = loadImage("people.jpg");
  size(256,256);
  noStroke();
  background(255);
  smooth();
}

void draw()
{ 
  float pointillize = map(mouseX, 0, width, 2, 18);
  int x = int(random(a.width));
  int y = int(random(a.height));
  color pix = a.get(x, y);
  fill(pix, 126);
  ellipse(x, y, pointillize, pointillize);
}