topical media & game development

topical media & game development

[] 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) _

#javascript-processing-example-topic-image-linearimage.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>LinearImage</h2>
  
  <p>Click and drag mouse up and down to control the signal. 
  Press and hold any key to watch the scanning.</p>
  
  <p><a href="http://processing.org/learning/topics/linearimage.html"><b>Original Processing.org Example:</b> LinearImage</a><br>
  <script type="application/processing">
  PImage a;
  boolean onetime = true;
  int[] aPixels = new int[200*200];
  int direction = 1;
  
  float signal;
  
  void setup() 
  {
    size(33, 33);
    stroke(255);
    a = loadImage("cait.jpg");
    for(int i=0; i<width*height; i++) {
      aPixels[i] = a.pixels[i];
    }
    frameRate(30);
  }
  
  void draw() 
  {
    if (signal > width-1 || signal < 0) { 
      direction = direction * -1; 
    }
  
    if(mousePressed) {
      signal = abs(mouseY\%height);
    } else {
      signal += (0.3*direction);  
    }
    
    
    if(keyPressed) {
      image(a, 0, 0);
      /*
      loadPixels();
      for (int i=0; i<width*height; i++) { 
        pixels[i] = aPixels[i];  
      }
      updatePixels();
      */
      line(0, signal, width, signal);
    } else {
      loadPixels();
      for (int i=0; i<width*height; i++) { 
        pixels[i] = aPixels[int((width*int(signal))+(i\%width))];
      }
      updatePixels();
    }
    
  }
  </script><canvas width="33" height="33"></canvas></p>
  <div style="overflow: hidden; height: 0px; width: 0px;"><img src="javascript-processing-example-cait.jpg" id="cait.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;
  boolean onetime = true;
  int[] aPixels = new int[200*200];
  int direction = 1;
  
  float signal;
  
  void setup() 
  {
    size(200, 200);
    stroke(255);
    a = loadImage("florence03.jpg");
    for(int i=0; i&lt;width*height; i++) {
      aPixels[i] = a.pixels[i];
    }
    frameRate(30);
  }
  
  void draw() 
  {
    if (signal &gt; width-1 || signal &lt; 0) { 
      direction = direction * -1; 
    }
  
    if(mousePressed) {
      signal = abs(mouseY\%height);
    } else {
      signal += (0.3*direction);  
    }
    
    
    if(keyPressed) {
      loadPixels();
      for (int i=0; i&lt;width*height; i++) { 
        pixels[i] = aPixels[i];  
      }
      updatePixels();
      line(0, signal, width, signal);
    } else {
      loadPixels();
      for (int i=0; i&lt;width*height; i++) { 
        pixels[i] = aPixels[int((width*int(signal))+(i\%width))];
      }
      updatePixels();
    }
    
  }</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) _

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