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-basic-math-incrementdecrement.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>IncrementDecrement</h2>
  
  <p>Writing "a++" is equivalent to "a = a + 1".  
  Writing "a--" is equivalent to "a = a - 1".</p>
  
  <p><a href="http://processing.org/learning/basics/incrementdecrement.html"><b>Original Processing.org Example:</b> IncrementDecrement</a><br>
  <script type="application/processing">
  int a;
  int b;
  boolean direction;
  
  void setup()
  {
    size(200, 200);
    colorMode(RGB, width);
    a = 0;
    b = width;
    direction = true;
    frameRate(30);
  }
  
  void draw()
  {
    a++;
    if(a > width) {
      a = 0;
      direction = !direction;
    }
    if(direction == true){
      stroke(a);
    } else {
      stroke(width-a);
    }
    line(a, 0, a, height/2);
  
    b--;
    if(b < 0) {
      b = width;
    }
    if(direction == true) {
      stroke(width-b);
    } else {
      stroke(b);
    }
    line(b, height/2+1, b, height);
  }
  </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>
  int a;
  int b;
  boolean direction;
  
  void setup()
  {
    size(200, 200);
    colorMode(RGB, width);
    a = 0;
    b = width;
    direction = true;
    frameRate(30);
  }
  
  void draw()
  {
    a++;
    if(a &gt; width) {
      a = 0;
      direction = !direction;
    }
    if(direction == true){
      stroke(a);
    } else {
      stroke(width-a);
    }
    line(a, 0, a, height/2);
  
    b--;
    if(b &lt; 0) {
      b = width;
    }
    if(direction == true) {
      stroke(width-b);
    } else {
      stroke(b);
    }
    line(b, height/2+1, b, height);
  }</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) _

You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.