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<h1 class="title">surfacegraph.cpp Example File</h1>
<span class="subtitle">surface/surfacegraph.cpp</span>
<!-- $$$surface/surfacegraph.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 "surfacegraph.h"</span>
<span class="preprocessor">#include <QtDataVisualization/QValue3DAxis></span>
<span class="preprocessor">#include <QtDataVisualization/Q3DTheme></span>
<span class="preprocessor">#include <QtGui/QImage></span>
<span class="preprocessor">#include <QtCore/qmath.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="keyword">const</span> <span class="type">int</span> sampleCountX <span class="operator">=</span> <span class="number">50</span>;
<span class="keyword">const</span> <span class="type">int</span> sampleCountZ <span class="operator">=</span> <span class="number">50</span>;
<span class="keyword">const</span> <span class="type">int</span> heightMapGridStepX <span class="operator">=</span> <span class="number">6</span>;
<span class="keyword">const</span> <span class="type">int</span> heightMapGridStepZ <span class="operator">=</span> <span class="number">6</span>;
<span class="keyword">const</span> <span class="type">float</span> sampleMin <span class="operator">=</span> <span class="operator">-</span><span class="number">8.0f</span>;
<span class="keyword">const</span> <span class="type">float</span> sampleMax <span class="operator">=</span> <span class="number">8.0f</span>;
SurfaceGraph<span class="operator">::</span>SurfaceGraph(<span class="type"><a href="q3dsurface.html">Q3DSurface</a></span> <span class="operator">*</span>surface)
: m_graph(surface)
{
m_graph<span class="operator">-</span><span class="operator">></span>setAxisX(<span class="keyword">new</span> QValue3DAxis);
m_graph<span class="operator">-</span><span class="operator">></span>setAxisY(<span class="keyword">new</span> QValue3DAxis);
m_graph<span class="operator">-</span><span class="operator">></span>setAxisZ(<span class="keyword">new</span> QValue3DAxis);
m_sqrtSinProxy <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsurfacedataproxy.html">QSurfaceDataProxy</a></span>();
m_sqrtSinSeries <span class="operator">=</span> <span class="keyword">new</span> QSurface3DSeries(m_sqrtSinProxy);
fillSqrtSinProxy();
<span class="type">QImage</span> heightMapImage(<span class="string">":/maps/mountain"</span>);
m_heightMapProxy <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qheightmapsurfacedataproxy.html">QHeightMapSurfaceDataProxy</a></span>(heightMapImage);
m_heightMapSeries <span class="operator">=</span> <span class="keyword">new</span> QSurface3DSeries(m_heightMapProxy);
m_heightMapSeries<span class="operator">-</span><span class="operator">></span>setItemLabelFormat(<span class="type">QStringLiteral</span>(<span class="string">"(@xLabel, @zLabel): @yLabel"</span>));
m_heightMapProxy<span class="operator">-</span><span class="operator">></span>setValueRanges(<span class="number">34.0f</span><span class="operator">,</span> <span class="number">40.0f</span><span class="operator">,</span> <span class="number">18.0f</span><span class="operator">,</span> <span class="number">24.0f</span>);
m_heightMapWidth <span class="operator">=</span> heightMapImage<span class="operator">.</span>width();
m_heightMapHeight <span class="operator">=</span> heightMapImage<span class="operator">.</span>height();
}
SurfaceGraph<span class="operator">::</span><span class="operator">~</span>SurfaceGraph()
{
<span class="keyword">delete</span> m_graph;
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>fillSqrtSinProxy()
{
<span class="type">float</span> stepX <span class="operator">=</span> (sampleMax <span class="operator">-</span> sampleMin) <span class="operator">/</span> <span class="type">float</span>(sampleCountX <span class="operator">-</span> <span class="number">1</span>);
<span class="type">float</span> stepZ <span class="operator">=</span> (sampleMax <span class="operator">-</span> sampleMin) <span class="operator">/</span> <span class="type">float</span>(sampleCountZ <span class="operator">-</span> <span class="number">1</span>);
<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(sampleCountZ);
<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> sampleCountZ ; i<span class="operator">+</span><span class="operator">+</span>) {
<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>(sampleCountX);
<span class="comment">// Keep values within range bounds, since just adding step can cause minor drift due</span>
<span class="comment">// to the rounding errors.</span>
<span class="type">float</span> z <span class="operator">=</span> qMin(sampleMax<span class="operator">,</span> (i <span class="operator">*</span> stepZ <span class="operator">+</span> sampleMin));
<span class="type">int</span> index <span class="operator">=</span> <span class="number">0</span>;
<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> sampleCountX; j<span class="operator">+</span><span class="operator">+</span>) {
<span class="type">float</span> x <span class="operator">=</span> qMin(sampleMax<span class="operator">,</span> (j <span class="operator">*</span> stepX <span class="operator">+</span> sampleMin));
<span class="type">float</span> R <span class="operator">=</span> qSqrt(z <span class="operator">*</span> z <span class="operator">+</span> x <span class="operator">*</span> x) <span class="operator">+</span> <span class="number">0.01f</span>;
<span class="type">float</span> y <span class="operator">=</span> (qSin(R) <span class="operator">/</span> R <span class="operator">+</span> <span class="number">0.24f</span>) <span class="operator">*</span> <span class="number">1.61f</span>;
(<span class="operator">*</span>newRow)<span class="operator">[</span>index<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span><span class="operator">.</span>setPosition(QVector3D(x<span class="operator">,</span> y<span class="operator">,</span> z));
}
<span class="operator">*</span>dataArray <span class="operator"><</span><span class="operator"><</span> newRow;
}
m_sqrtSinProxy<span class="operator">-</span><span class="operator">></span>resetArray(dataArray);
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>enableSqrtSinModel(bool enable)
{
<span class="keyword">if</span> (enable) {
m_sqrtSinSeries<span class="operator">-</span><span class="operator">></span>setDrawMode(QSurface3DSeries<span class="operator">::</span>DrawSurfaceAndWireframe);
m_sqrtSinSeries<span class="operator">-</span><span class="operator">></span>setFlatShadingEnabled(<span class="keyword">true</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisX()<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.2f"</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisZ()<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.2f"</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisX()<span class="operator">-</span><span class="operator">></span>setRange(sampleMin<span class="operator">,</span> sampleMax);
m_graph<span class="operator">-</span><span class="operator">></span>axisY()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0.0f</span><span class="operator">,</span> <span class="number">2.0f</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisZ()<span class="operator">-</span><span class="operator">></span>setRange(sampleMin<span class="operator">,</span> sampleMax);
m_graph<span class="operator">-</span><span class="operator">></span>axisX()<span class="operator">-</span><span class="operator">></span>setLabelAutoRotation(<span class="number">30</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisY()<span class="operator">-</span><span class="operator">></span>setLabelAutoRotation(<span class="number">90</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisZ()<span class="operator">-</span><span class="operator">></span>setLabelAutoRotation(<span class="number">30</span>);
m_graph<span class="operator">-</span><span class="operator">></span>removeSeries(m_heightMapSeries);
m_graph<span class="operator">-</span><span class="operator">></span>addSeries(m_sqrtSinSeries);
<span class="comment">// Reset range sliders for Sqrt&Sin</span>
m_rangeMinX <span class="operator">=</span> sampleMin;
m_rangeMinZ <span class="operator">=</span> sampleMin;
m_stepX <span class="operator">=</span> (sampleMax <span class="operator">-</span> sampleMin) <span class="operator">/</span> <span class="type">float</span>(sampleCountX <span class="operator">-</span> <span class="number">1</span>);
m_stepZ <span class="operator">=</span> (sampleMax <span class="operator">-</span> sampleMin) <span class="operator">/</span> <span class="type">float</span>(sampleCountZ <span class="operator">-</span> <span class="number">1</span>);
m_axisMinSliderX<span class="operator">-</span><span class="operator">></span>setMaximum(sampleCountX <span class="operator">-</span> <span class="number">2</span>);
m_axisMinSliderX<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">0</span>);
m_axisMaxSliderX<span class="operator">-</span><span class="operator">></span>setMaximum(sampleCountX <span class="operator">-</span> <span class="number">1</span>);
m_axisMaxSliderX<span class="operator">-</span><span class="operator">></span>setValue(sampleCountX <span class="operator">-</span> <span class="number">1</span>);
m_axisMinSliderZ<span class="operator">-</span><span class="operator">></span>setMaximum(sampleCountZ <span class="operator">-</span> <span class="number">2</span>);
m_axisMinSliderZ<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">0</span>);
m_axisMaxSliderZ<span class="operator">-</span><span class="operator">></span>setMaximum(sampleCountZ <span class="operator">-</span> <span class="number">1</span>);
m_axisMaxSliderZ<span class="operator">-</span><span class="operator">></span>setValue(sampleCountZ <span class="operator">-</span> <span class="number">1</span>);
}
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>enableHeightMapModel(bool enable)
{
<span class="keyword">if</span> (enable) {
m_heightMapSeries<span class="operator">-</span><span class="operator">></span>setDrawMode(QSurface3DSeries<span class="operator">::</span>DrawSurface);
m_heightMapSeries<span class="operator">-</span><span class="operator">></span>setFlatShadingEnabled(<span class="keyword">false</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisX()<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.1f N"</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisZ()<span class="operator">-</span><span class="operator">></span>setLabelFormat(<span class="string">"%.1f E"</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisX()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">34.0f</span><span class="operator">,</span> <span class="number">40.0f</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisY()<span class="operator">-</span><span class="operator">></span>setAutoAdjustRange(<span class="keyword">true</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisZ()<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">18.0f</span><span class="operator">,</span> <span class="number">24.0f</span>);
m_graph<span class="operator">-</span><span class="operator">></span>axisX()<span class="operator">-</span><span class="operator">></span>setTitle(<span class="type">QStringLiteral</span>(<span class="string">"Latitude"</span>));
m_graph<span class="operator">-</span><span class="operator">></span>axisY()<span class="operator">-</span><span class="operator">></span>setTitle(<span class="type">QStringLiteral</span>(<span class="string">"Height"</span>));
m_graph<span class="operator">-</span><span class="operator">></span>axisZ()<span class="operator">-</span><span class="operator">></span>setTitle(<span class="type">QStringLiteral</span>(<span class="string">"Longitude"</span>));
m_graph<span class="operator">-</span><span class="operator">></span>removeSeries(m_sqrtSinSeries);
m_graph<span class="operator">-</span><span class="operator">></span>addSeries(m_heightMapSeries);
<span class="comment">// Reset range sliders for height map</span>
<span class="type">int</span> mapGridCountX <span class="operator">=</span> m_heightMapWidth <span class="operator">/</span> heightMapGridStepX;
<span class="type">int</span> mapGridCountZ <span class="operator">=</span> m_heightMapHeight <span class="operator">/</span> heightMapGridStepZ;
m_rangeMinX <span class="operator">=</span> <span class="number">34.0f</span>;
m_rangeMinZ <span class="operator">=</span> <span class="number">18.0f</span>;
m_stepX <span class="operator">=</span> <span class="number">6.0f</span> <span class="operator">/</span> <span class="type">float</span>(mapGridCountX <span class="operator">-</span> <span class="number">1</span>);
m_stepZ <span class="operator">=</span> <span class="number">6.0f</span> <span class="operator">/</span> <span class="type">float</span>(mapGridCountZ <span class="operator">-</span> <span class="number">1</span>);
m_axisMinSliderX<span class="operator">-</span><span class="operator">></span>setMaximum(mapGridCountX <span class="operator">-</span> <span class="number">2</span>);
m_axisMinSliderX<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">0</span>);
m_axisMaxSliderX<span class="operator">-</span><span class="operator">></span>setMaximum(mapGridCountX <span class="operator">-</span> <span class="number">1</span>);
m_axisMaxSliderX<span class="operator">-</span><span class="operator">></span>setValue(mapGridCountX <span class="operator">-</span> <span class="number">1</span>);
m_axisMinSliderZ<span class="operator">-</span><span class="operator">></span>setMaximum(mapGridCountZ <span class="operator">-</span> <span class="number">2</span>);
m_axisMinSliderZ<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">0</span>);
m_axisMaxSliderZ<span class="operator">-</span><span class="operator">></span>setMaximum(mapGridCountZ <span class="operator">-</span> <span class="number">1</span>);
m_axisMaxSliderZ<span class="operator">-</span><span class="operator">></span>setValue(mapGridCountZ <span class="operator">-</span> <span class="number">1</span>);
}
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>adjustXMin(<span class="type">int</span> min)
{
<span class="type">float</span> minX <span class="operator">=</span> m_stepX <span class="operator">*</span> <span class="type">float</span>(min) <span class="operator">+</span> m_rangeMinX;
<span class="type">int</span> max <span class="operator">=</span> m_axisMaxSliderX<span class="operator">-</span><span class="operator">></span>value();
<span class="keyword">if</span> (min <span class="operator">></span><span class="operator">=</span> max) {
max <span class="operator">=</span> min <span class="operator">+</span> <span class="number">1</span>;
m_axisMaxSliderX<span class="operator">-</span><span class="operator">></span>setValue(max);
}
<span class="type">float</span> maxX <span class="operator">=</span> m_stepX <span class="operator">*</span> max <span class="operator">+</span> m_rangeMinX;
setAxisXRange(minX<span class="operator">,</span> maxX);
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>adjustXMax(<span class="type">int</span> max)
{
<span class="type">float</span> maxX <span class="operator">=</span> m_stepX <span class="operator">*</span> <span class="type">float</span>(max) <span class="operator">+</span> m_rangeMinX;
<span class="type">int</span> min <span class="operator">=</span> m_axisMinSliderX<span class="operator">-</span><span class="operator">></span>value();
<span class="keyword">if</span> (max <span class="operator"><</span><span class="operator">=</span> min) {
min <span class="operator">=</span> max <span class="operator">-</span> <span class="number">1</span>;
m_axisMinSliderX<span class="operator">-</span><span class="operator">></span>setValue(min);
}
<span class="type">float</span> minX <span class="operator">=</span> m_stepX <span class="operator">*</span> min <span class="operator">+</span> m_rangeMinX;
setAxisXRange(minX<span class="operator">,</span> maxX);
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>adjustZMin(<span class="type">int</span> min)
{
<span class="type">float</span> minZ <span class="operator">=</span> m_stepZ <span class="operator">*</span> <span class="type">float</span>(min) <span class="operator">+</span> m_rangeMinZ;
<span class="type">int</span> max <span class="operator">=</span> m_axisMaxSliderZ<span class="operator">-</span><span class="operator">></span>value();
<span class="keyword">if</span> (min <span class="operator">></span><span class="operator">=</span> max) {
max <span class="operator">=</span> min <span class="operator">+</span> <span class="number">1</span>;
m_axisMaxSliderZ<span class="operator">-</span><span class="operator">></span>setValue(max);
}
<span class="type">float</span> maxZ <span class="operator">=</span> m_stepZ <span class="operator">*</span> max <span class="operator">+</span> m_rangeMinZ;
setAxisZRange(minZ<span class="operator">,</span> maxZ);
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>adjustZMax(<span class="type">int</span> max)
{
<span class="type">float</span> maxX <span class="operator">=</span> m_stepZ <span class="operator">*</span> <span class="type">float</span>(max) <span class="operator">+</span> m_rangeMinZ;
<span class="type">int</span> min <span class="operator">=</span> m_axisMinSliderZ<span class="operator">-</span><span class="operator">></span>value();
<span class="keyword">if</span> (max <span class="operator"><</span><span class="operator">=</span> min) {
min <span class="operator">=</span> max <span class="operator">-</span> <span class="number">1</span>;
m_axisMinSliderZ<span class="operator">-</span><span class="operator">></span>setValue(min);
}
<span class="type">float</span> minX <span class="operator">=</span> m_stepZ <span class="operator">*</span> min <span class="operator">+</span> m_rangeMinZ;
setAxisZRange(minX<span class="operator">,</span> maxX);
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>setAxisXRange(<span class="type">float</span> min<span class="operator">,</span> <span class="type">float</span> max)
{
m_graph<span class="operator">-</span><span class="operator">></span>axisX()<span class="operator">-</span><span class="operator">></span>setRange(min<span class="operator">,</span> max);
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>setAxisZRange(<span class="type">float</span> min<span class="operator">,</span> <span class="type">float</span> max)
{
m_graph<span class="operator">-</span><span class="operator">></span>axisZ()<span class="operator">-</span><span class="operator">></span>setRange(min<span class="operator">,</span> max);
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>changeTheme(<span class="type">int</span> theme)
{
m_graph<span class="operator">-</span><span class="operator">></span>activeTheme()<span class="operator">-</span><span class="operator">></span>setType(<span class="type"><a href="q3dtheme.html">Q3DTheme</a></span><span class="operator">::</span>Theme(theme));
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>setBlackToYellowGradient()
{
<span class="type">QLinearGradient</span> gr;
gr<span class="operator">.</span>setColorAt(<span class="number">0.0</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>black);
gr<span class="operator">.</span>setColorAt(<span class="number">0.33</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>blue);
gr<span class="operator">.</span>setColorAt(<span class="number">0.67</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>red);
gr<span class="operator">.</span>setColorAt(<span class="number">1.0</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>yellow);
m_graph<span class="operator">-</span><span class="operator">></span>seriesList()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">-</span><span class="operator">></span>setBaseGradient(gr);
m_graph<span class="operator">-</span><span class="operator">></span>seriesList()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">-</span><span class="operator">></span>setColorStyle(<span class="type"><a href="q3dtheme.html">Q3DTheme</a></span><span class="operator">::</span>ColorStyleRangeGradient);
}
<span class="type">void</span> SurfaceGraph<span class="operator">::</span>setGreenToRedGradient()
{
<span class="type">QLinearGradient</span> gr;
gr<span class="operator">.</span>setColorAt(<span class="number">0.0</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>darkGreen);
gr<span class="operator">.</span>setColorAt(<span class="number">0.5</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>yellow);
gr<span class="operator">.</span>setColorAt(<span class="number">0.8</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>red);
gr<span class="operator">.</span>setColorAt(<span class="number">1.0</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>darkRed);
m_graph<span class="operator">-</span><span class="operator">></span>seriesList()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">-</span><span class="operator">></span>setBaseGradient(gr);
m_graph<span class="operator">-</span><span class="operator">></span>seriesList()<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">-</span><span class="operator">></span>setColorStyle(<span class="type"><a href="q3dtheme.html">Q3DTheme</a></span><span class="operator">::</span>ColorStyleRangeGradient);
}
</pre>
</div>
<!-- @@@surface/surfacegraph.cpp -->
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Documentation contributions included herein are the copyrights of
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distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
845e36bb3ecce380666d628d88446962
>
files
>
353
