193 lines
7.5 KiB
HTML
193 lines
7.5 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<title>. (dot) \ Language (API) \ Processing 2+</title>
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<link rel="icon" href="/favicon.ico" type="image/x-icon" />
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="Author" content="Processing Foundation" />
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<meta name="Publisher" content="Processing Foundation" />
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<meta name="Keywords" content="Processing, Sketchbook, Programming, Coding, Code, Art, Design" />
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<meta name="Description" content="Processing is a flexible software sketchbook and a language for learning how to code within the context of the visual arts. Since 2001, Processing has promoted software literacy within the visual arts and visual literacy within technology." />
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<meta name="Copyright" content="All contents copyright the Processing Foundation, Ben Fry, Casey Reas, and the MIT Media Laboratory" />
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<script src="javascript/modernizr-2.6.2.touch.js" type="text/javascript"></script>
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<link href="css/style.css" rel="stylesheet" type="text/css" />
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</head>
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<body id="Langauge-en" onload="" >
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<!-- ==================================== PAGE ============================ -->
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<div id="container">
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<!-- ==================================== HEADER ============================ -->
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<div id="ribbon">
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<ul class="left">
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<li class="highlight"><a href="http://processing.org/">Processing</a></li>
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<li><a href="http://p5js.org/">p5.js</a></li>
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<li><a href="http://py.processing.org/">Processing.py</a></li>
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<li><a href="http://android.processing.org/">Processing for Android</a></li>
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</ul>
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<ul class="right">
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<li><a href="https://processingfoundation.org/">Processing Foundation</a></li>
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</ul>
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<div class="clear"></div>
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</div>
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<div id="header">
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<a href="/" title="Back to the Processing cover."><div class="processing-logo no-cover" alt="Processing cover"></div></a>
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<form name="search" method="get" action="//www.google.com/search">
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<p><input type="hidden" name="as_sitesearch" value="processing.org" />
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<input type="text" name="as_q" value="" size="20" class="text" />
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<input type="submit" value=" " /></p>
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</form>
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</div>
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<a id="TOP" name="TOP"></a>
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<div id="navigation">
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<div class="navBar" id="mainnav">
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<a href="index.html" class='active'>Language</a><br>
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<a href="libraries/index.html" >Libraries</a><br>
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<a href="tools/index.html">Tools</a><br>
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<a href="environment/index.html">Environment</a><br>
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</div>
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<script> document.querySelectorAll(".processing-logo")[0].className = "processing-logo"; </script>
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</div>
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<!-- ==================================== CONTENT - Headers ============================ -->
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<div class="content">
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
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<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
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<tr class="name-row">
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<th scope="row">Name</th>
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<td><h3>. (dot)</h3></td>
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</tr>
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<tr class="">
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<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
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// Declare and construct two objects (h1 and h2) of the class HLine
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HLine h1 = new HLine(20, 1.0);
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HLine h2 = new HLine(50, 5.0);
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void setup() {
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size(200, 200);
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}
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void draw() {
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if (h2.speed > 1.0) { // Dot syntax can be used to get a value
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h2.speed -= 0.01; // or set a value.
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}
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h1.update(); // Calls the h1 object's update() function
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h2.update(); // Calls the h2 object's update() function
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}
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class HLine { // Class definition
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float ypos, speed; // Data
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HLine (float y, float s) { // Object constructor
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ypos = y;
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speed = s;
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}
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void update() { // Update method
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ypos += speed;
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if (ypos > width) {
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ypos = 0;
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}
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line(0, ypos, width, ypos);
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}
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}
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</pre></div>
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</td></tr>
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<tr class="">
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<th scope="row">Description</th>
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<td>
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Provides access to an object's methods and data. An object is one instance of a class and may contain both methods (object functions) and data (object variables and constants), as specified in the class definition. The dot operator directs the program to the information encapsulated within an object.
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</td>
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</tr>
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<tr class=""><th scope="row">Syntax</th><td><pre>
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object.method()
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object.data
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</pre></td></tr>
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<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
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<th scope="row" class="code">object</th>
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<td>the object to be accessed</td>
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</tr>
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<tr class="">
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<th scope="row" class="code">method()</th>
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<td>a method encapsulated in the object</td>
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</tr>
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<tr class="">
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<th scope="row" class="code">data</th>
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<td>a variable or constant encapsulated in the object</td>
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</tr></table></td> </tr>
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<tr class=""><th scope="row">Related</th><td><a class="code" href="Object.html">Object</a><br /></td></tr>
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</table>
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Updated on April 30, 2017 02:33:23pm EDT<br /><br />
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<!-- Creative Commons License -->
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<div class="license">
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<a rel="license" href="//creativecommons.org/licenses/by-nc-sa/4.0/"><img alt="Creative Commons License" style="border: none" src="https://licensebuttons.net/l/by-nc-sa/4.0/88x31.png" /></a>
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</div>
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<rdf:li xml:lang='x-default' >This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</a>.</rdf:li>
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<!-- ==================================== FOOTER ============================ -->
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<div id="footer">
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<div id="copyright">Processing is an open project intiated by <a href="http://benfry.com/">Ben Fry</a> and <a href="http://reas.com">Casey Reas</a>. It is developed by a <a href="http://processing.org/about/people/">team of volunteers</a>.</div>
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<a href="copyright.html">© Info</a>
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