Added particle trails for things like exhaust on a car.

samples/o3djs/base.js

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
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  * A stub for later optionally converting obfuscated names
  * @private
  * @param {string} name Name to un-obfuscate.
  * @return {string} un-obfuscated name.
  */
 o3djs.base.maybeDeobfuscateFunctionName_ = function(name) {
   return name;
 };
 
 /**
+ * Makes one class inherit from another.
+ * @param {!Object} subClass Class that wants to inherit.
+ * @param {!Object} superClass Class to inherit from.
+ */
+o3djs.base.inherit = function(subClass, superClass) {
+  var tmpClass = function() { };
+  tmpClass.prototype = superClass.prototype;
+  subClass.prototype = new tmpClass();
+};
+
+/**
  * Parses an error stack from an exception
  * @param {!Exception} excp The exception to get a stack trace from.
  * @return {!Array.<string>} An array of strings of the stack trace.
  */
 o3djs.base.parseErrorStack = function(excp) {
   var stack = [];
   var name;
   var line;
 
   if (!excp || !excp.stack) {
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   return msie;
 };
 /**
  * Returns true if the user's browser is Chrome 1.0, that requires a workaround
  * to create the plugin.
  * @return {boolean} true if the user's browser is Chrome 1.0.
  */
 o3djs.base.IsChrome10 = function() {
   return navigator.userAgent.indexOf('Chrome/1.0') >= 0;
 };