<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>fbm.h Example File | Qt Widgets 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-graphicsview-boxes-example.html">Boxes</a></td><td >fbm.h Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">fbm.h Example File</h1> <span class="subtitle">graphicsview/boxes/3rdparty/fbm.h</span> <!-- $$$graphicsview/boxes/3rdparty/fbm.h-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/***************************************************************** Prototypes for the fractional Brownian motion algorithm. These functions were originally the work of F. Kenton Musgrave. For documentation of the different functions please refer to the book: "Texturing and modeling: a procedural approach" by David S. Ebert et. al. ******************************************************************/</span> <span class="preprocessor">#ifndef _fbm_h</span> <span class="preprocessor">#define _fbm_h</span> <span class="preprocessor">#include <math.h></span> <span class="preprocessor">#ifdef __cplusplus</span> <span class="keyword">extern</span> <span class="string">"C"</span> { <span class="preprocessor">#endif</span> <span class="comment">//#define TRUE 1</span> <span class="comment">//#define FALSE 0</span> <span class="keyword">typedef</span> <span class="keyword">struct</span> { <span class="type">double</span> x; <span class="type">double</span> y; <span class="type">double</span> z; } Vector; <span class="type">float</span> noise3(<span class="type">float</span> vec<span class="operator">[</span><span class="operator">]</span>); <span class="type">double</span> fBm( Vector point<span class="operator">,</span> <span class="type">double</span> H<span class="operator">,</span> <span class="type">double</span> lacunarity<span class="operator">,</span> <span class="type">double</span> octaves<span class="operator">,</span> <span class="type">int</span> init ); <span class="preprocessor">#endif</span> <span class="preprocessor">#ifdef __cplusplus</span> } <span class="preprocessor">#endif</span> </pre> </div> <!-- @@@graphicsview/boxes/3rdparty/fbm.h --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>