<?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>topographicseries.cpp Example File | Qt Data Visualization 5.12.2</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 5.12</td><td ><a href="qtdatavisualization-index.html">Qt Data Visualization</a></td><td ><a href="qtdatavisualization-texturesurface-example.html">Textured Surface Example</a></td><td >topographicseries.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtdatavisualization-index.html">Qt Data Visualization | Commercial or GPLv3</a></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">topographicseries.cpp Example File</h1> <span class="subtitle">texturesurface/topographicseries.cpp</span> <!-- $$$texturesurface/topographicseries.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the Qt Data Visualization module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:GPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3 or (at your option) any later version ** approved by the KDE Free Qt Foundation. The licenses are as published by ** the Free Software Foundation and appearing in the file LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "topographicseries.h"</span> <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="type">QtDataVisualization</span>; <span class="comment">// Value used to encode height data as RGB value on PNG file</span> <span class="keyword">const</span> <span class="type">float</span> packingFactor <span class="operator">=</span> <span class="number">11983.0f</span>; TopographicSeries<span class="operator">::</span>TopographicSeries() { setDrawMode(QSurface3DSeries<span class="operator">::</span>DrawSurface); setFlatShadingEnabled(<span class="keyword">true</span>); setBaseColor(<span class="type">Qt</span><span class="operator">::</span>white); } TopographicSeries<span class="operator">::</span><span class="operator">~</span>TopographicSeries() { } <span class="type">void</span> TopographicSeries<span class="operator">::</span>setTopographyFile(<span class="keyword">const</span> <span class="type">QString</span> file<span class="operator">,</span> <span class="type">float</span> width<span class="operator">,</span> <span class="type">float</span> height) { <span class="type">QImage</span> heightMapImage(file); <span class="type">uchar</span> <span class="operator">*</span>bits <span class="operator">=</span> heightMapImage<span class="operator">.</span>bits(); <span class="type">int</span> imageHeight <span class="operator">=</span> heightMapImage<span class="operator">.</span>height(); <span class="type">int</span> imageWidth <span class="operator">=</span> heightMapImage<span class="operator">.</span>width(); <span class="type">int</span> widthBits <span class="operator">=</span> imageWidth <span class="operator">*</span> <span class="number">4</span>; <span class="type">float</span> stepX <span class="operator">=</span> width <span class="operator">/</span> <span class="type">float</span>(imageWidth); <span class="type">float</span> stepZ <span class="operator">=</span> height <span class="operator">/</span> <span class="type">float</span>(imageHeight); <span class="type"><a href="qsurfacedataproxy.html#QSurfaceDataArray-typedef">QSurfaceDataArray</a></span> <span class="operator">*</span>dataArray <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsurfacedataproxy.html#QSurfaceDataArray-typedef">QSurfaceDataArray</a></span>; dataArray<span class="operator">-</span><span class="operator">></span>reserve(imageHeight); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> imageHeight; i<span class="operator">+</span><span class="operator">+</span>) { <span class="type">int</span> p <span class="operator">=</span> i <span class="operator">*</span> widthBits; <span class="type">float</span> z <span class="operator">=</span> height <span class="operator">-</span> <span class="type">float</span>(i) <span class="operator">*</span> stepZ; <span class="type"><a href="qsurfacedataproxy.html#QSurfaceDataRow-typedef">QSurfaceDataRow</a></span> <span class="operator">*</span>newRow <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsurfacedataproxy.html#QSurfaceDataRow-typedef">QSurfaceDataRow</a></span>(imageWidth); <span class="keyword">for</span> (<span class="type">int</span> j <span class="operator">=</span> <span class="number">0</span>; j <span class="operator"><</span> imageWidth; j<span class="operator">+</span><span class="operator">+</span>) { <span class="type">uchar</span> aa <span class="operator">=</span> bits<span class="operator">[</span>p <span class="operator">+</span> <span class="number">0</span><span class="operator">]</span>; <span class="type">uchar</span> rr <span class="operator">=</span> bits<span class="operator">[</span>p <span class="operator">+</span> <span class="number">1</span><span class="operator">]</span>; <span class="type">uchar</span> gg <span class="operator">=</span> bits<span class="operator">[</span>p <span class="operator">+</span> <span class="number">2</span><span class="operator">]</span>; <span class="type">uint</span> color <span class="operator">=</span> <span class="type">uint</span>((gg <span class="operator"><</span><span class="operator"><</span> <span class="number">16</span>) <span class="operator">+</span> (rr <span class="operator"><</span><span class="operator"><</span> <span class="number">8</span>) <span class="operator">+</span> aa); <span class="type">float</span> y <span class="operator">=</span> <span class="type">float</span>(color) <span class="operator">/</span> packingFactor; (<span class="operator">*</span>newRow)<span class="operator">[</span>j<span class="operator">]</span><span class="operator">.</span>setPosition(QVector3D(<span class="type">float</span>(j) <span class="operator">*</span> stepX<span class="operator">,</span> y<span class="operator">,</span> z)); p <span class="operator">=</span> p <span class="operator">+</span> <span class="number">4</span>; } <span class="operator">*</span>dataArray <span class="operator"><</span><span class="operator"><</span> newRow; } dataProxy()<span class="operator">-</span><span class="operator">></span>resetArray(dataArray); m_sampleCountX <span class="operator">=</span> <span class="type">float</span>(imageWidth); m_sampleCountZ <span class="operator">=</span> <span class="type">float</span>(imageHeight); } </pre> </div> <!-- @@@texturesurface/topographicseries.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 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>