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<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"><a href="qtdatavisualization-qmlmodule.html">QtDataVisualization</a></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>
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<!-- @@@texturesurface/topographicseries.cpp -->
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distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
845e36bb3ecce380666d628d88446962
>
files
>
365
