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#javascript-processing-example-basic-math-noise1d.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>Noise1D</h2>
  
  <p>Using 1D Perlin Noise to assign location.</p>
  
  <p><a href="http://processing.org/learning/basics/noise1d.html"><b>Original Processing.org Example:</b> Noise1D</a><br>
  <script type="application/processing">
  float xoff = 0.0;
  float xincrement = 0.01; 
  
  void setup() {
    size(200,200);
    background(0);
    frameRate(30);
    smooth();
    noStroke();
  }
  
  void draw()
  {
    // Create an alpha blended background
    fill(0, 10);
    rect(0,0,width,height);
    
    //float n = random(0,width);  // Try this line instead of noise
    
    // Get a noise value based on xoff and scale it according to the window's width
    float n = noise(xoff)*width;
    
    // With each cycle, increment xoff
    xoff += xincrement;
    
    // Draw the ellipse at the value produced by perlin noise
    fill(200);
    ellipse(n,height/2,16,16);
  }
  </script><canvas width="200" height="200"></canvas></p>
  <div style="overflow: hidden; height: 0px; width: 0px;"></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>
  float xoff = 0.0;
  float xincrement = 0.01; 
  
  void setup() {
    size(200,200);
    background(0);
    frameRate(30);
    smooth();
    noStroke();
  }
  
  void draw()
  {
    // Create an alpha blended background
    fill(0, 10);
    rect(0,0,width,height);
    
    //float n = random(0,width);  // Try this line instead of noise
    
    // Get a noise value based on xoff and scale it according to the window's width
    float n = noise(xoff)*width;
    
    // With each cycle, increment xoff
    xoff += xincrement;
    
    // Draw the ellipse at the value produced by perlin noise
    fill(200);
    ellipse(n,height/2,16,16);
  }</pre>
  </body></html>
  


(C) Æliens 20/2/2008

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