topical media & game development
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#javascript-processing-example-basic-image-pointillism.htm / htm



  <!DOCTYPE html>
  <html><head>
  <script src="javascript-processing-example-processing.js"></script>
  <script src="javascript-processing-example-init.js"></script>
  <link rel="stylesheet" href="javascript-processing-example-style.css">
  </head><body><h1><a href="http://ejohn.org/blog/processingjs/">Processing.js</a></h1>
  <h2>Pointillism</h2>
  
  <p>by Daniel Shiffman. 
  
  Mouse horizontal location controls size of dots. 
  Creates a simple pointillist effect using ellipses colored
  according to pixels in an image.</p>
  
  <p><a href="http://processing.org/learning/basics/pointillism.html"><b>Original Processing.org Example:</b> Pointillism</a><br>
  <script type="application/processing">
  PImage a;
  
  void setup()
  {
    a = loadImage("eames.jpg");
    size(200,200);
    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);
  }
  </script><canvas width="200" height="200"></canvas></p>
  <div style="overflow: hidden; height: 0px; width: 0px;"><img src="javascript-processing-example-eames.jpg" id="eames.jpg"><img src="javascript-processing-example-sunflower.jpg" id="sunflower.jpg"></div>
  
  <pre><b>// All Examples Written by <a href="http://reas.com/">Casey Reas</a> and <a href="http://benfry.com/">Ben Fry</a>
  // unless otherwise stated.</b>
  PImage a;
  
  void setup()
  {
    a = loadImage("eames.jpg");
    size(200,200);
    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);
  }</pre>
  </body></html>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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