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<h1 class="title">main.cpp Example File</h1>
<span class="subtitle">basicshapes-cpp/main.cpp</span>
<!-- $$$basicshapes-cpp/main.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "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.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "scenemodifier.h"</span>
<span class="preprocessor">#include <QGuiApplication></span>
<span class="preprocessor">#include <Qt3DRender/qcamera.h></span>
<span class="preprocessor">#include <Qt3DCore/qentity.h></span>
<span class="preprocessor">#include <Qt3DRender/qcameralens.h></span>
<span class="preprocessor">#include <QtWidgets/QApplication></span>
<span class="preprocessor">#include <QtWidgets/QWidget></span>
<span class="preprocessor">#include <QtWidgets/QHBoxLayout></span>
<span class="preprocessor">#include <QtWidgets/QCheckBox></span>
<span class="preprocessor">#include <QtWidgets/QCommandLinkButton></span>
<span class="preprocessor">#include <QtGui/QScreen></span>
<span class="preprocessor">#include <Qt3DInput/QInputAspect></span>
<span class="preprocessor">#include <Qt3DExtras/qtorusmesh.h></span>
<span class="preprocessor">#include <Qt3DRender/qmesh.h></span>
<span class="preprocessor">#include <Qt3DRender/qtechnique.h></span>
<span class="preprocessor">#include <Qt3DRender/qmaterial.h></span>
<span class="preprocessor">#include <Qt3DRender/qeffect.h></span>
<span class="preprocessor">#include <Qt3DRender/qtexture.h></span>
<span class="preprocessor">#include <Qt3DRender/qrenderpass.h></span>
<span class="preprocessor">#include <Qt3DRender/qsceneloader.h></span>
<span class="preprocessor">#include <Qt3DRender/qpointlight.h></span>
<span class="preprocessor">#include <Qt3DCore/qtransform.h></span>
<span class="preprocessor">#include <Qt3DCore/qaspectengine.h></span>
<span class="preprocessor">#include <Qt3DRender/qrenderaspect.h></span>
<span class="preprocessor">#include <Qt3DExtras/qforwardrenderer.h></span>
<span class="preprocessor">#include <Qt3DExtras/qt3dwindow.h></span>
<span class="preprocessor">#include <Qt3DExtras/qfirstpersoncameracontroller.h></span>
<span class="type">int</span> main(<span class="type">int</span> argc<span class="operator">,</span> <span class="type">char</span> <span class="operator">*</span><span class="operator">*</span>argv)
{
<span class="type">QApplication</span> app(argc<span class="operator">,</span> argv);
<span class="type"><a href="qt3dextras-sub-qt3d.html">Qt3DExtras</a></span><span class="operator">::</span><span class="type">Qt3DWindow</span> <span class="operator">*</span>view <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qt3dextras-sub-qt3d.html">Qt3DExtras</a></span><span class="operator">::</span><span class="type">Qt3DWindow</span>();
view<span class="operator">-</span><span class="operator">></span>defaultFrameGraph()<span class="operator">-</span><span class="operator">></span>setClearColor(<span class="type">QColor</span>(<span class="type">QRgb</span>(<span class="number">0x4d4d4f</span>)));
<span class="type">QWidget</span> <span class="operator">*</span>container <span class="operator">=</span> <span class="type">QWidget</span><span class="operator">::</span>createWindowContainer(view);
<span class="type">QSize</span> screenSize <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>screen()<span class="operator">-</span><span class="operator">></span>size();
container<span class="operator">-</span><span class="operator">></span>setMinimumSize(<span class="type">QSize</span>(<span class="number">200</span><span class="operator">,</span> <span class="number">100</span>));
container<span class="operator">-</span><span class="operator">></span>setMaximumSize(screenSize);
<span class="type">QWidget</span> <span class="operator">*</span>widget <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QWidget</span>;
<span class="type">QHBoxLayout</span> <span class="operator">*</span>hLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QHBoxLayout</span>(widget);
<span class="type">QVBoxLayout</span> <span class="operator">*</span>vLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVBoxLayout</span>();
vLayout<span class="operator">-</span><span class="operator">></span>setAlignment(<span class="type">Qt</span><span class="operator">::</span>AlignTop);
hLayout<span class="operator">-</span><span class="operator">></span>addWidget(container<span class="operator">,</span> <span class="number">1</span>);
hLayout<span class="operator">-</span><span class="operator">></span>addLayout(vLayout);
widget<span class="operator">-</span><span class="operator">></span>setWindowTitle(<span class="type">QStringLiteral</span>(<span class="string">"Basic shapes"</span>));
<span class="type"><a href="qt3dinput-sub-qt3d.html">Qt3DInput</a></span><span class="operator">::</span><span class="type">QInputAspect</span> <span class="operator">*</span>input <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qt3dinput-sub-qt3d.html">Qt3DInput</a></span><span class="operator">::</span><span class="type">QInputAspect</span>;
view<span class="operator">-</span><span class="operator">></span>registerAspect(input);
<span class="comment">// Root entity</span>
<span class="type"><a href="qt3dcore-module.html">Qt3DCore</a></span><span class="operator">::</span><span class="type">QEntity</span> <span class="operator">*</span>rootEntity <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qt3dcore-module.html">Qt3DCore</a></span><span class="operator">::</span><span class="type">QEntity</span>();
<span class="comment">// Camera</span>
<span class="type"><a href="qt3drender-module.html">Qt3DRender</a></span><span class="operator">::</span><span class="type">QCamera</span> <span class="operator">*</span>cameraEntity <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>camera();
cameraEntity<span class="operator">-</span><span class="operator">></span>lens()<span class="operator">-</span><span class="operator">></span>setPerspectiveProjection(<span class="number">45.0f</span><span class="operator">,</span> <span class="number">16.0f</span><span class="operator">/</span><span class="number">9.0f</span><span class="operator">,</span> <span class="number">0.1f</span><span class="operator">,</span> <span class="number">1000.0f</span>);
cameraEntity<span class="operator">-</span><span class="operator">></span>setPosition(QVector3D(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">20.0f</span>));
cameraEntity<span class="operator">-</span><span class="operator">></span>setUpVector(QVector3D(<span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>));
cameraEntity<span class="operator">-</span><span class="operator">></span>setViewCenter(QVector3D(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>));
<span class="type"><a href="qt3dcore-module.html">Qt3DCore</a></span><span class="operator">::</span><span class="type">QEntity</span> <span class="operator">*</span>lightEntity <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qt3dcore-module.html">Qt3DCore</a></span><span class="operator">::</span><span class="type">QEntity</span>(rootEntity);
<span class="type"><a href="qt3drender-module.html">Qt3DRender</a></span><span class="operator">::</span><span class="type">QPointLight</span> <span class="operator">*</span>light <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qt3drender-module.html">Qt3DRender</a></span><span class="operator">::</span><span class="type">QPointLight</span>(lightEntity);
light<span class="operator">-</span><span class="operator">></span>setColor(<span class="string">"white"</span>);
light<span class="operator">-</span><span class="operator">></span>setIntensity(<span class="number">1</span>);
lightEntity<span class="operator">-</span><span class="operator">></span>addComponent(light);
<span class="type"><a href="qt3dcore-module.html">Qt3DCore</a></span><span class="operator">::</span><span class="type">QTransform</span> <span class="operator">*</span>lightTransform <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qt3dcore-module.html">Qt3DCore</a></span><span class="operator">::</span><span class="type">QTransform</span>(lightEntity);
lightTransform<span class="operator">-</span><span class="operator">></span>setTranslation(cameraEntity<span class="operator">-</span><span class="operator">></span>position());
lightEntity<span class="operator">-</span><span class="operator">></span>addComponent(lightTransform);
<span class="comment">// For camera controls</span>
<span class="type"><a href="qt3dextras-sub-qt3d.html">Qt3DExtras</a></span><span class="operator">::</span><span class="type">QFirstPersonCameraController</span> <span class="operator">*</span>camController <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qt3dextras-sub-qt3d.html">Qt3DExtras</a></span><span class="operator">::</span><span class="type">QFirstPersonCameraController</span>(rootEntity);
camController<span class="operator">-</span><span class="operator">></span>setCamera(cameraEntity);
<span class="comment">// Scenemodifier</span>
SceneModifier <span class="operator">*</span>modifier <span class="operator">=</span> <span class="keyword">new</span> SceneModifier(rootEntity);
<span class="comment">// Set root object of the scene</span>
view<span class="operator">-</span><span class="operator">></span>setRootEntity(rootEntity);
<span class="comment">// Create control widgets</span>
<span class="type">QCommandLinkButton</span> <span class="operator">*</span>info <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QCommandLinkButton</span>();
info<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QStringLiteral</span>(<span class="string">"Qt3D ready-made meshes"</span>));
info<span class="operator">-</span><span class="operator">></span>setDescription(<span class="type">QString</span><span class="operator">::</span>fromLatin1(<span class="string">"Qt3D provides several ready-made meshes, like torus, cylinder, cone, "</span>
<span class="string">"cube, plane and sphere."</span>));
info<span class="operator">-</span><span class="operator">></span>setIconSize(<span class="type">QSize</span>(<span class="number">0</span><span class="operator">,</span><span class="number">0</span>));
<span class="type">QCheckBox</span> <span class="operator">*</span>torusCB <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QCheckBox</span>(widget);
torusCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
torusCB<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QStringLiteral</span>(<span class="string">"Torus"</span>));
<span class="type">QCheckBox</span> <span class="operator">*</span>coneCB <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QCheckBox</span>(widget);
coneCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
coneCB<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QStringLiteral</span>(<span class="string">"Cone"</span>));
<span class="type">QCheckBox</span> <span class="operator">*</span>cylinderCB <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QCheckBox</span>(widget);
cylinderCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
cylinderCB<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QStringLiteral</span>(<span class="string">"Cylinder"</span>));
<span class="type">QCheckBox</span> <span class="operator">*</span>cuboidCB <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QCheckBox</span>(widget);
cuboidCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
cuboidCB<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QStringLiteral</span>(<span class="string">"Cuboid"</span>));
<span class="type">QCheckBox</span> <span class="operator">*</span>planeCB <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QCheckBox</span>(widget);
planeCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
planeCB<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QStringLiteral</span>(<span class="string">"Plane"</span>));
<span class="type">QCheckBox</span> <span class="operator">*</span>sphereCB <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QCheckBox</span>(widget);
sphereCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
sphereCB<span class="operator">-</span><span class="operator">></span>setText(<span class="type">QStringLiteral</span>(<span class="string">"Sphere"</span>));
vLayout<span class="operator">-</span><span class="operator">></span>addWidget(info);
vLayout<span class="operator">-</span><span class="operator">></span>addWidget(torusCB);
vLayout<span class="operator">-</span><span class="operator">></span>addWidget(coneCB);
vLayout<span class="operator">-</span><span class="operator">></span>addWidget(cylinderCB);
vLayout<span class="operator">-</span><span class="operator">></span>addWidget(cuboidCB);
vLayout<span class="operator">-</span><span class="operator">></span>addWidget(planeCB);
vLayout<span class="operator">-</span><span class="operator">></span>addWidget(sphereCB);
<span class="type">QObject</span><span class="operator">::</span>connect(torusCB<span class="operator">,</span> <span class="operator">&</span><span class="type">QCheckBox</span><span class="operator">::</span>stateChanged<span class="operator">,</span>
modifier<span class="operator">,</span> <span class="operator">&</span>SceneModifier<span class="operator">::</span>enableTorus);
<span class="type">QObject</span><span class="operator">::</span>connect(coneCB<span class="operator">,</span> <span class="operator">&</span><span class="type">QCheckBox</span><span class="operator">::</span>stateChanged<span class="operator">,</span>
modifier<span class="operator">,</span> <span class="operator">&</span>SceneModifier<span class="operator">::</span>enableCone);
<span class="type">QObject</span><span class="operator">::</span>connect(cylinderCB<span class="operator">,</span> <span class="operator">&</span><span class="type">QCheckBox</span><span class="operator">::</span>stateChanged<span class="operator">,</span>
modifier<span class="operator">,</span> <span class="operator">&</span>SceneModifier<span class="operator">::</span>enableCylinder);
<span class="type">QObject</span><span class="operator">::</span>connect(cuboidCB<span class="operator">,</span> <span class="operator">&</span><span class="type">QCheckBox</span><span class="operator">::</span>stateChanged<span class="operator">,</span>
modifier<span class="operator">,</span> <span class="operator">&</span>SceneModifier<span class="operator">::</span>enableCuboid);
<span class="type">QObject</span><span class="operator">::</span>connect(planeCB<span class="operator">,</span> <span class="operator">&</span><span class="type">QCheckBox</span><span class="operator">::</span>stateChanged<span class="operator">,</span>
modifier<span class="operator">,</span> <span class="operator">&</span>SceneModifier<span class="operator">::</span>enablePlane);
<span class="type">QObject</span><span class="operator">::</span>connect(sphereCB<span class="operator">,</span> <span class="operator">&</span><span class="type">QCheckBox</span><span class="operator">::</span>stateChanged<span class="operator">,</span>
modifier<span class="operator">,</span> <span class="operator">&</span>SceneModifier<span class="operator">::</span>enableSphere);
torusCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
coneCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
cylinderCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
cuboidCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
planeCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
sphereCB<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>);
<span class="comment">// Show window</span>
widget<span class="operator">-</span><span class="operator">></span>show();
widget<span class="operator">-</span><span class="operator">></span>resize(<span class="number">1200</span><span class="operator">,</span> <span class="number">800</span>);
<span class="keyword">return</span> app<span class="operator">.</span>exec();
}
</pre>
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<!-- @@@basicshapes-cpp/main.cpp -->
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