<!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>TrueFalse</h2> <p>Boolean data is one bit of information. True or false. It is common to use Booleans with control statements to determine the flow of a program. In this example, when the boolean value "x" is true, vertical black lines are drawn and when the boolean value "x" is false, horizontal gray lines are drawn.</p> <p><a href="http://processing.org/learning/basics/truefalse.html"><b>Original Processing.org Example:</b> TrueFalse</a><br> <script type="application/processing"> boolean x = false; size(200, 200); background(0); stroke(0); for (int i = 1; i < width; i += 2) { if (i < width/2) { x = true; } else { x = false; } if (x) { stroke(255); line(i, 1, i, height-1); } if (!x) { stroke(126); line(width/2 , i, width-2, i); } } </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> boolean x = false; size(200, 200); background(0); stroke(0); for (int i = 1; i < width; i += 2) { if (i < width/2) { x = true; } else { x = false; } if (x) { stroke(255); line(i, 1, i, height-1); } if (!x) { stroke(126); line(width/2 , i, width-2, i); } }</pre> </body></html>