├── doc ├── images │ └── basicshapes-cpp-example.jpg └── src │ └── basicshapes.qdoc ├── qt3d-offlinerenderer.pro ├── offscreenenginedelegate.h ├── offscreenenginedelegate.cpp ├── texturerendertarget.h ├── offscreensurfaceframegraph.h ├── mainwidget.h ├── offscreenengine.h ├── texturerendertarget.cpp ├── README.md ├── offscreenengine.cpp ├── main.cpp ├── offscreensurfaceframegraph.cpp ├── scenemodifier.h ├── mainwidget.cpp ├── scenemodifier.cpp └── LICENSE /doc/images/basicshapes-cpp-example.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/florianblume/Qt3D-OffscreenRenderer/HEAD/doc/images/basicshapes-cpp-example.jpg -------------------------------------------------------------------------------- /qt3d-offlinerenderer.pro: -------------------------------------------------------------------------------- 1 | android|ios|tvos|winrt { 2 | warning( "This example is not supported for android, ios, tvos, or winrt." ) 3 | } 4 | 5 | QT += 3dcore 3drender 3dinput 3dextras 6 | QT += widgets 7 | 8 | SOURCES += main.cpp \ 9 | scenemodifier.cpp \ 10 | offscreenengine.cpp \ 11 | offscreensurfaceframegraph.cpp \ 12 | texturerendertarget.cpp \ 13 | offscreenenginedelegate.cpp \ 14 | mainwidget.cpp 15 | 16 | HEADERS += \ 17 | scenemodifier.h \ 18 | offscreenengine.h \ 19 | offscreensurfaceframegraph.h \ 20 | texturerendertarget.h \ 21 | offscreenenginedelegate.h \ 22 | mainwidget.h 23 | 24 | 25 | -------------------------------------------------------------------------------- /offscreenenginedelegate.h: -------------------------------------------------------------------------------- 1 | #ifndef OFFSCREENENGINEDELEGATE_H 2 | #define OFFSCREENENGINEDELEGATE_H 3 | 4 | #include "offscreenengine.h" 5 | #include 6 | #include 7 | 8 | // Example class that requests frames from the offscreen engine. 9 | // The engine's framegraph generates the frame, which notifies this delegate. 10 | // Once the frame is set in the provided label, a new frame is requested. 11 | class OffscreenEngineDelegate : public QObject 12 | { 13 | Q_OBJECT 14 | public: 15 | OffscreenEngineDelegate(OffscreenEngine *engine, QLabel *label); 16 | virtual ~OffscreenEngineDelegate(); 17 | 18 | private: 19 | OffscreenEngine *engine; 20 | QLabel *label; 21 | Qt3DRender::QRenderCaptureReply *reply; 22 | 23 | private slots: 24 | void onImageRendered(); 25 | 26 | private: 27 | void requestRenderCapture(); 28 | }; 29 | 30 | #endif // OFFSCREENENGINEDELEGATE_H 31 | -------------------------------------------------------------------------------- /offscreenenginedelegate.cpp: -------------------------------------------------------------------------------- 1 | #include "offscreenenginedelegate.h" 2 | 3 | OffscreenEngineDelegate::OffscreenEngineDelegate(OffscreenEngine *engine, QLabel *label) : 4 | engine(engine), 5 | label(label), 6 | reply(nullptr) 7 | { 8 | // Immediately request a render capture. 9 | // Every time we receive a reply, we then 10 | // re-request a new capture. 11 | requestRenderCapture(); 12 | } 13 | 14 | OffscreenEngineDelegate::~OffscreenEngineDelegate() 15 | { 16 | delete reply; 17 | } 18 | 19 | void OffscreenEngineDelegate::requestRenderCapture() 20 | { 21 | delete reply; 22 | reply = engine->getRenderCapture()->requestCapture(); 23 | connect(reply, SIGNAL(completed()), this, SLOT(onImageRendered())); 24 | } 25 | 26 | void OffscreenEngineDelegate::onImageRendered() 27 | { 28 | // Get the image from the reply and display it in the label. 29 | label->setPixmap(QPixmap::fromImage(reply->image())); 30 | 31 | // Request another render capture. 32 | requestRenderCapture(); 33 | } 34 | -------------------------------------------------------------------------------- /texturerendertarget.h: -------------------------------------------------------------------------------- 1 | #ifndef TEXTURERENDERTARGET_H 2 | #define TEXTURERENDERTARGET_H 3 | 4 | #include 5 | #include 6 | #include 7 | 8 | // Encapsulates a 2D texture that a frame graph can render into. 9 | class TextureRenderTarget : public Qt3DRender::QRenderTarget 10 | { 11 | Q_OBJECT 12 | public: 13 | TextureRenderTarget(Qt3DCore::QNode *parent = nullptr, 14 | const QSize &size = QSize(500, 500), 15 | Qt3DRender::QRenderTargetOutput::AttachmentPoint attatchmentPoint 16 | = Qt3DRender::QRenderTargetOutput::Color0); 17 | 18 | void setSize(const QSize &size); 19 | QSize getSize() { return size; } 20 | Qt3DRender::QTexture2D* getTexture(); 21 | 22 | private: 23 | QSize size; 24 | Qt3DRender::QRenderTargetOutput *output; 25 | Qt3DRender::QTexture2D *texture; 26 | // To enable depth testing 27 | Qt3DRender::QRenderTargetOutput *depthTextureOutput; 28 | Qt3DRender::QTexture2D *depthTexture; 29 | }; 30 | 31 | #endif // TEXTURERENDERTARGET_H 32 | -------------------------------------------------------------------------------- /offscreensurfaceframegraph.h: -------------------------------------------------------------------------------- 1 | #ifndef OFFSCREENLAYER_H 2 | #define OFFSCREENLAYER_H 3 | 4 | #include "texturerendertarget.h" 5 | 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | 14 | // The OffscreenSurfaceFrameGraph class is where the magic happens. 15 | // It is responsible for rendering the scene to an "offscreen" surface (ie. a texture), 16 | // rather than directly to a QWindow. This means that the render contents can be 17 | // taken and used within other QWidgets. 18 | class OffscreenSurfaceFrameGraph : public Qt3DRender::QRenderSurfaceSelector 19 | { 20 | Q_OBJECT 21 | public: 22 | OffscreenSurfaceFrameGraph(Qt3DCore::QNode* parent = nullptr, Qt3DRender::QCamera *camera = nullptr, const QSize &size = QSize(500, 500)); 23 | 24 | void setSize(const QSize &size); 25 | Qt3DCore::QNode *getRenderTargetSelector(); 26 | 27 | private: 28 | TextureRenderTarget *textureTarget; 29 | QOffscreenSurface *offscreenSurface; 30 | Qt3DRender::QRenderTargetSelector *renderTargetSelector; 31 | Qt3DRender::QViewport *viewport; 32 | Qt3DRender::QClearBuffers *clearBuffers; 33 | Qt3DRender::QCameraSelector *cameraSelector; 34 | Qt3DRender::QCamera *camera; 35 | }; 36 | 37 | #endif // OFFSCREENLAYER_H 38 | -------------------------------------------------------------------------------- /mainwidget.h: -------------------------------------------------------------------------------- 1 | #ifndef MAINWIDGET_H 2 | #define MAINWIDGET_H 3 | 4 | #include "offscreenenginedelegate.h" 5 | #include "offscreenengine.h" 6 | #include "scenemodifier.h" 7 | 8 | #include 9 | #include 10 | #include 11 | 12 | #include 13 | #include 14 | #include 15 | #include 16 | #include 17 | #include 18 | #include 19 | 20 | #include 21 | 22 | #include 23 | #include 24 | #include 25 | #include 26 | #include 27 | #include 28 | #include 29 | #include 30 | #include 31 | 32 | #include 33 | #include 34 | 35 | #include 36 | #include 37 | 38 | #include 39 | #include 40 | 41 | // Main widget used to display the example content. 42 | // Setup and teardown occurs within this class rather than in main(), 43 | // to make sure that the application event loop is running when destroying things. 44 | class MainWidget : public QWidget 45 | { 46 | Q_OBJECT 47 | public: 48 | explicit MainWidget(QWidget *parent = nullptr); 49 | virtual ~MainWidget(); 50 | 51 | private: 52 | OffscreenEngine* offscreenEngine; 53 | OffscreenEngineDelegate* offscreenEngineDelegate; 54 | SceneModifier* modifier; 55 | }; 56 | 57 | #endif // MAINWIDGET_H 58 | -------------------------------------------------------------------------------- /offscreenengine.h: -------------------------------------------------------------------------------- 1 | #ifndef OFFSCREENENGINE_H 2 | #define OFFSCREENENGINE_H 3 | 4 | #include "offscreensurfaceframegraph.h" 5 | 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | #include 15 | 16 | // The OffscreenEngine brings together various Qt3D classes that are required in order to 17 | // perform basic scene rendering. Of these, the most important for this project is the OffscreenSurfaceFrameGraph. 18 | // Render captures can be requested, and the capture contents used within other widgets (see OffscreenEngineDelegate). 19 | class OffscreenEngine 20 | { 21 | public: 22 | OffscreenEngine(Qt3DRender::QCamera *camera, const QSize &size); 23 | ~OffscreenEngine(); 24 | 25 | void setSceneRoot(Qt3DCore::QNode *sceneRoot); 26 | Qt3DRender::QRenderCapture *getRenderCapture(); 27 | void setSize(const QSize &size); 28 | 29 | private: 30 | // We need all of the following in order to render a scene: 31 | Qt3DCore::QAspectEngine *aspectEngine; // The aspect engine, which holds the scene and related aspects. 32 | Qt3DRender::QRenderAspect *renderAspect; // The render aspect, which deals with rendering the scene. 33 | Qt3DLogic::QLogicAspect *logicAspect; // The logic aspect, which runs jobs to do with synchronising frames. 34 | Qt3DRender::QRenderSettings *renderSettings; // The render settings, which control the general rendering behaviour. 35 | Qt3DRender::QRenderCapture *renderCapture; // The render capture node, which is appended to the frame graph. 36 | OffscreenSurfaceFrameGraph *offscreenFrameGraph; // The frame graph, which allows rendering to an offscreen surface. 37 | Qt3DCore::QNode *sceneRoot; // The scene root, which becomes a child of the engine's root entity. 38 | }; 39 | 40 | #endif // OFFSCREENENGINE_H 41 | -------------------------------------------------------------------------------- /texturerendertarget.cpp: -------------------------------------------------------------------------------- 1 | #include "texturerendertarget.h" 2 | 3 | TextureRenderTarget::TextureRenderTarget(Qt3DCore::QNode *parent, 4 | const QSize &size, 5 | Qt3DRender::QRenderTargetOutput::AttachmentPoint attatchmentPoint) : 6 | Qt3DRender::QRenderTarget(parent), 7 | size(size) 8 | { 9 | // The lifetime of the objects created here is managed 10 | // automatically, as they become children of this object. 11 | 12 | // Create a render target output for rendering colour. 13 | output = new Qt3DRender::QRenderTargetOutput(this); 14 | output->setAttachmentPoint(attatchmentPoint); 15 | 16 | // Create a texture to render into. 17 | texture = new Qt3DRender::QTexture2D(output); 18 | texture->setSize(size.width(), size.height()); 19 | texture->setFormat(Qt3DRender::QAbstractTexture::RGB8_UNorm); 20 | texture->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear); 21 | texture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear); 22 | 23 | // Hook the texture up to our output, and the output up to this object. 24 | output->setTexture(texture); 25 | addOutput(output); 26 | 27 | depthTextureOutput = new Qt3DRender::QRenderTargetOutput(this); 28 | depthTextureOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Depth); 29 | depthTexture = new Qt3DRender::QTexture2D(depthTextureOutput); 30 | depthTexture->setSize(size.width(), size.height()); 31 | depthTexture->setFormat(Qt3DRender::QAbstractTexture::DepthFormat); 32 | depthTexture->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear); 33 | depthTexture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear); 34 | depthTexture->setComparisonFunction(Qt3DRender::QAbstractTexture::CompareLessEqual); 35 | depthTexture->setComparisonMode(Qt3DRender::QAbstractTexture::CompareRefToTexture); 36 | // Hook up the depth texture 37 | depthTextureOutput->setTexture(depthTexture); 38 | addOutput(depthTextureOutput); 39 | } 40 | 41 | Qt3DRender::QTexture2D* TextureRenderTarget::getTexture() 42 | { 43 | return texture; 44 | } 45 | 46 | void TextureRenderTarget::setSize(const QSize &size) 47 | { 48 | this->size = size; 49 | texture->setSize(size.width(), size.height()); 50 | } 51 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Qt3D-OffscreenRenderer 2 | 3 | --- 4 | 5 | *Note:* If you want to use the offscreen renderer in your project to embedd Qt3D without having to use `Qt3DWindow`, checkout my [implementation of a Qt3DWidget](https://github.com/florianblume/qt3d-widget). It renders everything offline and uses the offscreen texture to paint a quad in a `QOpenGLWidget`. 6 | 7 | --- 8 | 9 | This project is based on the Qt 3D basic shapes C++ example (https://doc.qt.io/qt-5.10/qt3d-basicshapes-cpp-example.html). 10 | 11 | It renders the whole scene using a QOffscreenSurface offline and displays the image in a QLabel. 12 | To get the image to resize adjust the OffscreenEngines rendering size on resize of the widget. 13 | I guess the rest should be self-explanatory. 14 | 15 | This is supposed to show how to construct an offline framegraph and save everyone who needs such 16 | a renderer the hours of trial and error and the despair I encountered. 17 | 18 | ## Qt version 19 | 20 | Make sure to use Qt >= 5.9.2 due to a bug in earlier versions: https://bugreports.qt.io/browse/QTBUG-61382 21 | 22 | ## The framegraph 23 | 24 | root 25 | | 26 | renderSettings 27 | | 28 | renderSurfaceSelector 29 | | 30 | renderTargetSelector 31 | | 32 | --------------------------------------- 33 | | | | 34 | renderTarget clearBuffers viewport 35 | | | 36 | renderTargetOutput cameraSelector 37 | | 38 | texture2D 39 | 40 | ## Note 41 | 42 | Somehow the first image that is captured is blank and without rendered objects. I suspected the problem 43 | to be that the render capture was triggered right after the clear buffers node. But it doesn't seem 44 | to have any effect when we place the capture node anywhere else. So basically the first image has to 45 | be skipped. 46 | 47 | To enable depth tests just add a QRenderStateSet as a child to the camera selector and a QDepthTest as a child to the render state set and add it as a state. Then, in the render target add a texture to the depth attatchment point. This is it. 48 | 49 | I experiemented with multisampling, and added a QMultiSampleAntiAliasing render state to the render state set and instead of adding a QTexture2D used a QMultisampleTexture2D but it gave me version errors with OpenGL. If maybe someone gets it running they can fork the project and I can then do a pull. 50 | 51 | # Disclaimer 52 | 53 | Please note that part of the code was written by the Qt Company or KDAB and they hold the respective 54 | copyright. For further information read the copyright notice in the source code. 55 | -------------------------------------------------------------------------------- /offscreenengine.cpp: -------------------------------------------------------------------------------- 1 | #include "offscreenengine.h" 2 | 3 | OffscreenEngine::OffscreenEngine(Qt3DRender::QCamera *camera, const QSize &size) 4 | { 5 | sceneRoot = nullptr; 6 | 7 | // Set up the engine and the aspects that we want to use. 8 | aspectEngine = new Qt3DCore::QAspectEngine(); 9 | renderAspect = new Qt3DRender::QRenderAspect(Qt3DRender::QRenderAspect::Threaded); // Only threaded mode seems to work right now. 10 | logicAspect = new Qt3DLogic::QLogicAspect(); 11 | 12 | aspectEngine->registerAspect(renderAspect); 13 | aspectEngine->registerAspect(logicAspect); 14 | 15 | // Create the root entity of the engine. 16 | // This is not the same as the 3D scene root: the QRenderSettings 17 | // component must be held by the root of the QEntity tree, 18 | // so it is added to this one. The 3D scene is added as a subtree later, 19 | // in setSceneRoot(). 20 | Qt3DCore::QEntityPtr root(new Qt3DCore::QEntity()); 21 | renderSettings = new Qt3DRender::QRenderSettings(root.data()); 22 | root->addComponent(renderSettings); 23 | 24 | // Create the offscreen frame graph, which will manage all of the resources required 25 | // for rendering without a QWindow. 26 | offscreenFrameGraph = new OffscreenSurfaceFrameGraph(renderSettings, camera, size); 27 | 28 | // Set this frame graph to be in use. 29 | renderSettings->setActiveFrameGraph(offscreenFrameGraph); 30 | 31 | // Add a render capture node to the frame graph. 32 | // This is set as the next child of the render target selector node, 33 | // so that the capture will be taken from the specified render target 34 | // once all other rendering operations have taken place. 35 | renderCapture = new Qt3DRender::QRenderCapture(offscreenFrameGraph->getRenderTargetSelector()); 36 | 37 | // Set the root entity of the engine. This causes the engine to begin running. 38 | aspectEngine->setRootEntity(root); 39 | } 40 | 41 | OffscreenEngine::~OffscreenEngine() 42 | { 43 | // Setting a null root entity shuts down the engine. 44 | aspectEngine->setRootEntity(Qt3DCore::QEntityPtr()); 45 | 46 | // Not sure if the following is strictly required, as it may 47 | // happen automatically when the engine is destroyed. 48 | aspectEngine->unregisterAspect(logicAspect); 49 | aspectEngine->unregisterAspect(renderAspect); 50 | delete logicAspect; 51 | delete renderAspect; 52 | 53 | delete aspectEngine; 54 | } 55 | 56 | void OffscreenEngine::setSceneRoot(Qt3DCore::QNode *sceneRoot) 57 | { 58 | // Make sure any existing scene root is unparented. 59 | if ( this->sceneRoot ) 60 | { 61 | this->sceneRoot->setParent(static_cast(nullptr)); 62 | } 63 | 64 | // Parent the incoming scene root to our current root entity. 65 | this->sceneRoot = sceneRoot; 66 | this->sceneRoot->setParent(aspectEngine->rootEntity().data()); 67 | } 68 | 69 | Qt3DRender::QRenderCapture* OffscreenEngine::getRenderCapture() 70 | { 71 | return renderCapture; 72 | } 73 | 74 | void OffscreenEngine::setSize(const QSize &size) 75 | { 76 | offscreenFrameGraph->setSize(size); 77 | } 78 | -------------------------------------------------------------------------------- /doc/src/basicshapes.qdoc: -------------------------------------------------------------------------------- 1 | /**************************************************************************** 2 | ** 3 | ** Copyright (C) 2016 The Qt Company Ltd. 4 | ** Contact: https://www.qt.io/licensing/ 5 | ** 6 | ** This file is part of the documentation of the Qt Toolkit. 7 | ** 8 | ** $QT_BEGIN_LICENSE:FDL$ 9 | ** Commercial License Usage 10 | ** Licensees holding valid commercial Qt licenses may use this file in 11 | ** accordance with the commercial license agreement provided with the 12 | ** Software or, alternatively, in accordance with the terms contained in 13 | ** a written agreement between you and The Qt Company. For licensing terms 14 | ** and conditions see https://www.qt.io/terms-conditions. For further 15 | ** information use the contact form at https://www.qt.io/contact-us. 16 | ** 17 | ** GNU Free Documentation License Usage 18 | ** Alternatively, this file may be used under the terms of the GNU Free 19 | ** Documentation License version 1.3 as published by the Free Software 20 | ** Foundation and appearing in the file included in the packaging of 21 | ** this file. Please review the following information to ensure 22 | ** the GNU Free Documentation License version 1.3 requirements 23 | ** will be met: https://www.gnu.org/licenses/fdl-1.3.html. 24 | ** $QT_END_LICENSE$ 25 | ** 26 | ****************************************************************************/ 27 | 28 | /*! 29 | \example basicshapes-cpp 30 | \title Qt 3D: Basic Shapes C++ Example 31 | \ingroup qt3d-examples-cpp 32 | \brief Shows four basic shapes that Qt 3D offers and sets up a mesh for each of them. 33 | 34 | \image basicshapes-cpp-example.jpg 35 | 36 | \e {Basic Shapes} shows four basic shapes that Qt 3D offers: a torus, a cylinder, 37 | a cube, and a sphere. The example also shows how to embed a Qt 3D scene 38 | into a widget and connect with other widgets. 39 | 40 | \include examples-run.qdocinc 41 | 42 | \section1 Setting Up a Torus Mesh 43 | 44 | As an example, we go through how to set up a torus mesh. First, we instantiate 45 | the \c QTorusMesh, and then we set the mesh specific parameters, which for torus are 46 | radius, minor radius, and the number of rings and slices. 47 | 48 | \snippet basicshapes-cpp/scenemodifier.cpp 0 49 | 50 | The size and position of the torus can be adjusted with transform components. 51 | We create scale, translation, and rotation components and add them into the 52 | \c QTransform component. 53 | 54 | \snippet basicshapes-cpp/scenemodifier.cpp 1 55 | 56 | To change the diffuse color of the mesh, we create a \c QPhongMaterial and set 57 | its diffuse color. 58 | 59 | \snippet basicshapes-cpp/scenemodifier.cpp 2 60 | 61 | The final step is to add the torus into an entity tree, and we do that by creating 62 | a \c QEntity with a parent entity and adding the previously created mesh, material, 63 | and transform components into it. 64 | 65 | \snippet basicshapes-cpp/scenemodifier.cpp 3 66 | 67 | We can control the visibility of the entity by defining whether it has a parent 68 | or not. That is, whether it is part of an entity tree or not. 69 | 70 | \snippet basicshapes-cpp/scenemodifier.cpp 4 71 | 72 | 73 | */ 74 | -------------------------------------------------------------------------------- /main.cpp: -------------------------------------------------------------------------------- 1 | /**************************************************************************** 2 | ** 3 | ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). 4 | ** Contact: https://www.qt.io/licensing/ 5 | ** 6 | ** This file is part of the Qt3D module of the Qt Toolkit. 7 | ** 8 | ** $QT_BEGIN_LICENSE:BSD$ 9 | ** Commercial License Usage 10 | ** Licensees holding valid commercial Qt licenses may use this file in 11 | ** accordance with the commercial license agreement provided with the 12 | ** Software or, alternatively, in accordance with the terms contained in 13 | ** a written agreement between you and The Qt Company. For licensing terms 14 | ** and conditions see https://www.qt.io/terms-conditions. For further 15 | ** information use the contact form at https://www.qt.io/contact-us. 16 | ** 17 | ** BSD License Usage 18 | ** Alternatively, you may use this file under the terms of the BSD license 19 | ** as follows: 20 | ** 21 | ** "Redistribution and use in source and binary forms, with or without 22 | ** modification, are permitted provided that the following conditions are 23 | ** met: 24 | ** * Redistributions of source code must retain the above copyright 25 | ** notice, this list of conditions and the following disclaimer. 26 | ** * Redistributions in binary form must reproduce the above copyright 27 | ** notice, this list of conditions and the following disclaimer in 28 | ** the documentation and/or other materials provided with the 29 | ** distribution. 30 | ** * Neither the name of The Qt Company Ltd nor the names of its 31 | ** contributors may be used to endorse or promote products derived 32 | ** from this software without specific prior written permission. 33 | ** 34 | ** 35 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 38 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 39 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 41 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 42 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 43 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 44 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 45 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 46 | ** 47 | ** $QT_END_LICENSE$ 48 | ** 49 | ****************************************************************************/ 50 | 51 | #include 52 | #include 53 | 54 | #include "mainwidget.h" 55 | 56 | int main(int argc, char **argv) 57 | { 58 | QApplication app(argc, argv); 59 | 60 | // Set up the default OpenGL surface format. 61 | QSurfaceFormat format; 62 | format.setDepthBufferSize(32); 63 | format.setSamples(8); 64 | QSurfaceFormat::setDefaultFormat(format); 65 | 66 | // Create our top-level widget. 67 | MainWidget widget; 68 | widget.show(); 69 | widget.resize(1200, 800); 70 | 71 | // Run the application. 72 | return app.exec(); 73 | } 74 | -------------------------------------------------------------------------------- /offscreensurfaceframegraph.cpp: -------------------------------------------------------------------------------- 1 | #include "offscreensurfaceframegraph.h" 2 | /* 3 | * An overview of the frame graph used by this class: 4 | * 5 | * (1)| RenderTargetSelector | 6 | * | 7 | * +=================+ 8 | * V V 9 | * (2)| ClearBuffers | (3)| Viewport | 10 | * V 11 | * (4)| CameraSelector | 12 | * 13 | * To summarise the Qt3D documentation, the frame graph is processed in depth-first order. 14 | * Each node sets some state. Therefore you can read the graph as saying: 15 | * "Given the action for this node, perform the actions of each of its children in order." 16 | * 17 | * 1. The render target selector sets the current render target (an OpenGL texture buffer). 18 | * 2. The specified buffers (here, colour and depth) are cleared. 19 | * 3. The viewport area to render into is set up. 20 | * 4. The appropriate camera is chosen. 21 | * 22 | * Further children can be added to the render target selector in order to perform subsequent 23 | * actions. In this example project, the offscreen engine adds a render capture node after 24 | * the existing children in the frame graph. 25 | * 26 | * An example extension of the framegraph can be the one that draws an image in the background: 27 | * 28 | * https://github.com/Sonnentierchen/Qt3D-BackgroundImage 29 | */ 30 | 31 | OffscreenSurfaceFrameGraph::OffscreenSurfaceFrameGraph(Qt3DCore::QNode* parent, Qt3DRender::QCamera *camera, const QSize &size) : 32 | Qt3DRender::QRenderSurfaceSelector(parent), 33 | camera(camera) 34 | { 35 | // Firstly, create the offscreen surface. This will take the place 36 | // of a QWindow, allowing us to render our scene without one. 37 | offscreenSurface = new QOffscreenSurface(); 38 | offscreenSurface->setFormat(QSurfaceFormat::defaultFormat()); 39 | offscreenSurface->create(); 40 | 41 | // Hook it up to the frame graph. 42 | setSurface(offscreenSurface); 43 | setExternalRenderTargetSize(size); 44 | 45 | // Create a texture to render into. This acts as the buffer that 46 | // holds the rendered image. 47 | renderTargetSelector = new Qt3DRender::QRenderTargetSelector(this); 48 | textureTarget = new TextureRenderTarget(renderTargetSelector, size); 49 | renderTargetSelector->setTarget(textureTarget); 50 | 51 | // Create a node used for clearing the required buffers. 52 | clearBuffers = new Qt3DRender::QClearBuffers(renderTargetSelector); 53 | clearBuffers->setClearColor(QColor(100, 100, 100, 255)); 54 | clearBuffers->setBuffers(Qt3DRender::QClearBuffers::ColorDepthBuffer); 55 | 56 | // Create a viewport node. The viewport here just covers the entire render area. 57 | viewport = new Qt3DRender::QViewport(renderTargetSelector); 58 | viewport->setNormalizedRect(QRectF(0.0, 0.0, 1.0, 1.0)); 59 | 60 | // Create a camera selector node, and tell it to use the camera we've ben given. 61 | cameraSelector = new Qt3DRender::QCameraSelector(viewport); 62 | cameraSelector->setCamera(camera); 63 | } 64 | 65 | void OffscreenSurfaceFrameGraph::setSize(const QSize &size) 66 | { 67 | textureTarget->setSize(size); 68 | setExternalRenderTargetSize(size); 69 | } 70 | 71 | Qt3DCore::QNode *OffscreenSurfaceFrameGraph::getRenderTargetSelector() 72 | { 73 | return renderTargetSelector; 74 | } 75 | -------------------------------------------------------------------------------- /scenemodifier.h: -------------------------------------------------------------------------------- 1 | /**************************************************************************** 2 | ** 3 | ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). 4 | ** Contact: https://www.qt.io/licensing/ 5 | ** 6 | ** This file is part of the Qt3D module of the Qt Toolkit. 7 | ** 8 | ** $QT_BEGIN_LICENSE:BSD$ 9 | ** Commercial License Usage 10 | ** Licensees holding valid commercial Qt licenses may use this file in 11 | ** accordance with the commercial license agreement provided with the 12 | ** Software or, alternatively, in accordance with the terms contained in 13 | ** a written agreement between you and The Qt Company. For licensing terms 14 | ** and conditions see https://www.qt.io/terms-conditions. For further 15 | ** information use the contact form at https://www.qt.io/contact-us. 16 | ** 17 | ** BSD License Usage 18 | ** Alternatively, you may use this file under the terms of the BSD license 19 | ** as follows: 20 | ** 21 | ** "Redistribution and use in source and binary forms, with or without 22 | ** modification, are permitted provided that the following conditions are 23 | ** met: 24 | ** * Redistributions of source code must retain the above copyright 25 | ** notice, this list of conditions and the following disclaimer. 26 | ** * Redistributions in binary form must reproduce the above copyright 27 | ** notice, this list of conditions and the following disclaimer in 28 | ** the documentation and/or other materials provided with the 29 | ** distribution. 30 | ** * Neither the name of The Qt Company Ltd nor the names of its 31 | ** contributors may be used to endorse or promote products derived 32 | ** from this software without specific prior written permission. 33 | ** 34 | ** 35 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 38 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 39 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 41 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 42 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 43 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 44 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 45 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 46 | ** 47 | ** $QT_END_LICENSE$ 48 | ** 49 | ****************************************************************************/ 50 | 51 | #ifndef SCENEMODIFIER_H 52 | #define SCENEMODIFIER_H 53 | 54 | #include 55 | 56 | #include 57 | #include 58 | 59 | #include 60 | #include 61 | #include 62 | #include 63 | #include 64 | #include 65 | #include 66 | 67 | // Convenience class that wraps up the interactions between the UI and the shapes in the scene. 68 | // Signals from UI elements are connected directly to a SceneModifier object, 69 | // which shows or hides the relevant shape. 70 | class SceneModifier : public QObject 71 | { 72 | Q_OBJECT 73 | public: 74 | explicit SceneModifier(Qt3DCore::QEntity *rootEntity); 75 | 76 | public slots: 77 | // The UI check boxes connect to these slots. 78 | void enableTorus(bool enabled); 79 | void enableCone(bool enabled); 80 | void enableCylinder(bool enabled); 81 | void enableCuboid(bool enabled); 82 | void enablePlane(bool enabled); 83 | void enableSphere(bool enabled); 84 | 85 | private: 86 | // All the entities we manage. 87 | // Note that this class doesn't own the entities here: 88 | // the root entity is owned by the offscreen engine, 89 | // and all other entities are children of the root 90 | // (so will be destroyed when it is destroyed). 91 | // Therefore, we don't need to worry about cleaning 92 | // any of these up. 93 | Qt3DCore::QEntity *m_rootEntity; 94 | Qt3DExtras::QTorusMesh *m_torus; 95 | Qt3DCore::QEntity *m_coneEntity; 96 | Qt3DCore::QEntity *m_cylinderEntity; 97 | Qt3DCore::QEntity *m_torusEntity; 98 | Qt3DCore::QEntity *m_cuboidEntity; 99 | Qt3DCore::QEntity *m_planeEntity; 100 | Qt3DCore::QEntity *m_sphereEntity; 101 | }; 102 | 103 | #endif // SCENEMODIFIER_H 104 | 105 | -------------------------------------------------------------------------------- /mainwidget.cpp: -------------------------------------------------------------------------------- 1 | #include "mainwidget.h" 2 | 3 | MainWidget::MainWidget(QWidget *parent) : QWidget(parent) 4 | { 5 | setWindowTitle(QStringLiteral("Basic shapes")); 6 | 7 | // The label which will act as the 3D viewport. 8 | // Frames that are rendered by the offscreen engine will be 9 | // displayed in this label as QImages. 10 | QLabel *graphicsLabel = new QLabel(); 11 | graphicsLabel->setGeometry(QRect(0, 0, 1200, 800)); 12 | graphicsLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); 13 | 14 | // Set up layouts for the UI. 15 | QHBoxLayout *hLayout = new QHBoxLayout(this); 16 | QVBoxLayout *vLayout = new QVBoxLayout(); 17 | vLayout->setAlignment(Qt::AlignTop); 18 | hLayout->addWidget(graphicsLabel, 1); 19 | hLayout->addLayout(vLayout); 20 | 21 | // Root entity in the 3D scene. 22 | Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity(); 23 | 24 | // Set up a camera to point at the shapes. 25 | Qt3DRender::QCamera *cameraEntity = new Qt3DRender::QCamera(rootEntity); 26 | cameraEntity->lens()->setPerspectiveProjection(45.0f, 1200.0f/800.0f, 0.1f, 1000.0f); 27 | cameraEntity->setPosition(QVector3D(0, 0, 20.0f)); 28 | cameraEntity->setUpVector(QVector3D(0, 1, 0)); 29 | cameraEntity->setViewCenter(QVector3D(0, 0, 0)); 30 | 31 | // Set up a light to illuminate the shapes. 32 | Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity); 33 | Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity); 34 | light->setColor("white"); 35 | light->setIntensity(1); 36 | lightEntity->addComponent(light); 37 | Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform(lightEntity); 38 | lightTransform->setTranslation(cameraEntity->position()); 39 | lightEntity->addComponent(lightTransform); 40 | 41 | // Allow the camera to be controlled. 42 | Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(rootEntity); 43 | camController->setCamera(cameraEntity); 44 | 45 | // Create a SceneModifier, which connects UI elements to show or hide their respective shapes. 46 | // Given the root entity, the SceneModifier internally adds the respective shapes as children. 47 | modifier = new SceneModifier(rootEntity); 48 | 49 | // Create the offscreen engine. This is the object which is responsible for handling the 3D scene itself. 50 | offscreenEngine = new OffscreenEngine(cameraEntity, QSize(1200, 800)); 51 | 52 | // The offscreen engine delegate handles requesting frames from the engine, and drawing their results in the graphics label. 53 | offscreenEngineDelegate = new OffscreenEngineDelegate(offscreenEngine, graphicsLabel); 54 | 55 | // Set our scene to be rendered by the offscreen engine. 56 | offscreenEngine->setSceneRoot(rootEntity); 57 | 58 | // Create UI. 59 | QCommandLinkButton *info = new QCommandLinkButton(); 60 | info->setText(QStringLiteral("Qt3D ready-made meshes")); 61 | info->setDescription(QString::fromLatin1("Qt3D provides several ready-made meshes, like torus, cylinder, cone, " 62 | "cube, plane and sphere.")); 63 | info->setIconSize(QSize(0,0)); 64 | 65 | QCheckBox *torusCB = new QCheckBox(); 66 | torusCB->setChecked(true); 67 | torusCB->setText(QStringLiteral("Torus")); 68 | 69 | QCheckBox *coneCB = new QCheckBox(); 70 | coneCB->setChecked(true); 71 | coneCB->setText(QStringLiteral("Cone")); 72 | 73 | QCheckBox *cylinderCB = new QCheckBox(); 74 | cylinderCB->setChecked(true); 75 | cylinderCB->setText(QStringLiteral("Cylinder")); 76 | 77 | QCheckBox *cuboidCB = new QCheckBox(); 78 | cuboidCB->setChecked(true); 79 | cuboidCB->setText(QStringLiteral("Cuboid")); 80 | 81 | QCheckBox *planeCB = new QCheckBox(); 82 | planeCB->setChecked(true); 83 | planeCB->setText(QStringLiteral("Plane")); 84 | 85 | QCheckBox *sphereCB = new QCheckBox(); 86 | sphereCB->setChecked(true); 87 | sphereCB->setText(QStringLiteral("Sphere")); 88 | 89 | vLayout->addWidget(info); 90 | vLayout->addWidget(torusCB); 91 | vLayout->addWidget(coneCB); 92 | vLayout->addWidget(cylinderCB); 93 | vLayout->addWidget(cuboidCB); 94 | vLayout->addWidget(planeCB); 95 | vLayout->addWidget(sphereCB); 96 | 97 | // Connect the check boxes to the scene modifier. 98 | QObject::connect(torusCB, &QCheckBox::stateChanged, 99 | modifier, &SceneModifier::enableTorus); 100 | QObject::connect(coneCB, &QCheckBox::stateChanged, 101 | modifier, &SceneModifier::enableCone); 102 | QObject::connect(cylinderCB, &QCheckBox::stateChanged, 103 | modifier, &SceneModifier::enableCylinder); 104 | QObject::connect(cuboidCB, &QCheckBox::stateChanged, 105 | modifier, &SceneModifier::enableCuboid); 106 | QObject::connect(planeCB, &QCheckBox::stateChanged, 107 | modifier, &SceneModifier::enablePlane); 108 | QObject::connect(sphereCB, &QCheckBox::stateChanged, 109 | modifier, &SceneModifier::enableSphere); 110 | 111 | torusCB->setChecked(true); 112 | coneCB->setChecked(true); 113 | cylinderCB->setChecked(true); 114 | cuboidCB->setChecked(true); 115 | planeCB->setChecked(true); 116 | sphereCB->setChecked(true); 117 | } 118 | 119 | MainWidget::~MainWidget() 120 | { 121 | // Clean up after ourselves. 122 | delete offscreenEngineDelegate; 123 | delete modifier; 124 | delete offscreenEngine; 125 | } 126 | -------------------------------------------------------------------------------- /scenemodifier.cpp: -------------------------------------------------------------------------------- 1 | /**************************************************************************** 2 | ** 3 | ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). 4 | ** Contact: https://www.qt.io/licensing/ 5 | ** 6 | ** This file is part of the Qt3D module of the Qt Toolkit. 7 | ** 8 | ** $QT_BEGIN_LICENSE:BSD$ 9 | ** Commercial License Usage 10 | ** Licensees holding valid commercial Qt licenses may use this file in 11 | ** accordance with the commercial license agreement provided with the 12 | ** Software or, alternatively, in accordance with the terms contained in 13 | ** a written agreement between you and The Qt Company. For licensing terms 14 | ** and conditions see https://www.qt.io/terms-conditions. For further 15 | ** information use the contact form at https://www.qt.io/contact-us. 16 | ** 17 | ** BSD License Usage 18 | ** Alternatively, you may use this file under the terms of the BSD license 19 | ** as follows: 20 | ** 21 | ** "Redistribution and use in source and binary forms, with or without 22 | ** modification, are permitted provided that the following conditions are 23 | ** met: 24 | ** * Redistributions of source code must retain the above copyright 25 | ** notice, this list of conditions and the following disclaimer. 26 | ** * Redistributions in binary form must reproduce the above copyright 27 | ** notice, this list of conditions and the following disclaimer in 28 | ** the documentation and/or other materials provided with the 29 | ** distribution. 30 | ** * Neither the name of The Qt Company Ltd nor the names of its 31 | ** contributors may be used to endorse or promote products derived 32 | ** from this software without specific prior written permission. 33 | ** 34 | ** 35 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 38 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 39 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 41 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 42 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 43 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 44 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 45 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 46 | ** 47 | ** $QT_END_LICENSE$ 48 | ** 49 | ****************************************************************************/ 50 | 51 | #include "scenemodifier.h" 52 | 53 | #include 54 | 55 | SceneModifier::SceneModifier(Qt3DCore::QEntity *rootEntity) 56 | : m_rootEntity(rootEntity) 57 | { 58 | // Torus shape data 59 | m_torus = new Qt3DExtras::QTorusMesh(); 60 | m_torus->setRadius(1.0f); 61 | m_torus->setMinorRadius(0.4f); 62 | m_torus->setRings(100); 63 | m_torus->setSlices(20); 64 | 65 | // TorusMesh Transform 66 | Qt3DCore::QTransform *torusTransform = new Qt3DCore::QTransform(); 67 | torusTransform->setScale(2.0f); 68 | torusTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(0.0f, 1.0f, 0.0f), 25.0f)); 69 | torusTransform->setTranslation(QVector3D(5.0f, 4.0f, 0.0f)); 70 | 71 | Qt3DExtras::QPhongMaterial *torusMaterial = new Qt3DExtras::QPhongMaterial(); 72 | torusMaterial->setDiffuse(QColor(QRgb(0xbeb32b))); 73 | 74 | // Torus 75 | m_torusEntity = new Qt3DCore::QEntity(m_rootEntity); 76 | m_torusEntity->addComponent(m_torus); 77 | m_torusEntity->addComponent(torusMaterial); 78 | m_torusEntity->addComponent(torusTransform); 79 | 80 | // Cone shape data 81 | Qt3DExtras::QConeMesh *cone = new Qt3DExtras::QConeMesh(); 82 | cone->setTopRadius(0.5); 83 | cone->setBottomRadius(1); 84 | cone->setLength(3); 85 | cone->setRings(50); 86 | cone->setSlices(20); 87 | 88 | // ConeMesh Transform 89 | Qt3DCore::QTransform *coneTransform = new Qt3DCore::QTransform(); 90 | coneTransform->setScale(1.5f); 91 | coneTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1.0f, 0.0f, 0.0f), 45.0f)); 92 | coneTransform->setTranslation(QVector3D(0.0f, 4.0f, -1.5)); 93 | 94 | Qt3DExtras::QPhongMaterial *coneMaterial = new Qt3DExtras::QPhongMaterial(); 95 | coneMaterial->setDiffuse(QColor(QRgb(0x928327))); 96 | 97 | // Cone 98 | m_coneEntity = new Qt3DCore::QEntity(m_rootEntity); 99 | m_coneEntity->addComponent(cone); 100 | m_coneEntity->addComponent(coneMaterial); 101 | m_coneEntity->addComponent(coneTransform); 102 | 103 | // Cylinder shape data 104 | Qt3DExtras::QCylinderMesh *cylinder = new Qt3DExtras::QCylinderMesh(); 105 | cylinder->setRadius(1); 106 | cylinder->setLength(3); 107 | cylinder->setRings(100); 108 | cylinder->setSlices(20); 109 | 110 | // CylinderMesh Transform 111 | Qt3DCore::QTransform *cylinderTransform = new Qt3DCore::QTransform(); 112 | cylinderTransform->setScale(1.5f); 113 | cylinderTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1.0f, 0.0f, 0.0f), 45.0f)); 114 | cylinderTransform->setTranslation(QVector3D(-5.0f, 4.0f, -1.5)); 115 | 116 | Qt3DExtras::QPhongMaterial *cylinderMaterial = new Qt3DExtras::QPhongMaterial(); 117 | cylinderMaterial->setDiffuse(QColor(QRgb(0x928327))); 118 | 119 | // Cylinder 120 | m_cylinderEntity = new Qt3DCore::QEntity(m_rootEntity); 121 | m_cylinderEntity->addComponent(cylinder); 122 | m_cylinderEntity->addComponent(cylinderMaterial); 123 | m_cylinderEntity->addComponent(cylinderTransform); 124 | 125 | // Cuboid shape data 126 | Qt3DExtras::QCuboidMesh *cuboid = new Qt3DExtras::QCuboidMesh(); 127 | 128 | // CuboidMesh Transform 129 | Qt3DCore::QTransform *cuboidTransform = new Qt3DCore::QTransform(); 130 | cuboidTransform->setScale(4.0f); 131 | cuboidTransform->setTranslation(QVector3D(5.0f, -4.0f, 0.0f)); 132 | 133 | Qt3DExtras::QPhongMaterial *cuboidMaterial = new Qt3DExtras::QPhongMaterial(); 134 | cuboidMaterial->setDiffuse(QColor(QRgb(0x665423))); 135 | 136 | //Cuboid 137 | m_cuboidEntity = new Qt3DCore::QEntity(m_rootEntity); 138 | m_cuboidEntity->addComponent(cuboid); 139 | m_cuboidEntity->addComponent(cuboidMaterial); 140 | m_cuboidEntity->addComponent(cuboidTransform); 141 | 142 | // Plane shape data 143 | Qt3DExtras::QPlaneMesh *planeMesh = new Qt3DExtras::QPlaneMesh(); 144 | planeMesh->setWidth(2); 145 | planeMesh->setHeight(2); 146 | 147 | // Plane mesh transform 148 | Qt3DCore::QTransform *planeTransform = new Qt3DCore::QTransform(); 149 | planeTransform->setScale(1.3f); 150 | planeTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1.0f, 0.0f, 0.0f), 45.0f)); 151 | planeTransform->setTranslation(QVector3D(0.0f, -4.0f, 0.0f)); 152 | 153 | Qt3DExtras::QPhongMaterial *planeMaterial = new Qt3DExtras::QPhongMaterial(); 154 | planeMaterial->setDiffuse(QColor(QRgb(0xa69929))); 155 | 156 | // Plane 157 | m_planeEntity = new Qt3DCore::QEntity(m_rootEntity); 158 | m_planeEntity->addComponent(planeMesh); 159 | m_planeEntity->addComponent(planeMaterial); 160 | m_planeEntity->addComponent(planeTransform); 161 | 162 | // Sphere shape data 163 | Qt3DExtras::QSphereMesh *sphereMesh = new Qt3DExtras::QSphereMesh(); 164 | sphereMesh->setRings(20); 165 | sphereMesh->setSlices(20); 166 | sphereMesh->setRadius(2); 167 | 168 | // Sphere mesh transform 169 | Qt3DCore::QTransform *sphereTransform = new Qt3DCore::QTransform(); 170 | 171 | sphereTransform->setScale(1.3f); 172 | sphereTransform->setTranslation(QVector3D(-5.0f, -4.0f, 0.0f)); 173 | 174 | Qt3DExtras::QPhongMaterial *sphereMaterial = new Qt3DExtras::QPhongMaterial(); 175 | sphereMaterial->setDiffuse(QColor(QRgb(0xa69929))); 176 | 177 | // Sphere 178 | m_sphereEntity = new Qt3DCore::QEntity(m_rootEntity); 179 | m_sphereEntity->addComponent(sphereMesh); 180 | m_sphereEntity->addComponent(sphereMaterial); 181 | m_sphereEntity->addComponent(sphereTransform); 182 | } 183 | 184 | void SceneModifier::enableTorus(bool enabled) 185 | { 186 | m_torusEntity->setEnabled(enabled); 187 | } 188 | 189 | void SceneModifier::enableCone(bool enabled) 190 | { 191 | m_coneEntity->setEnabled(enabled); 192 | } 193 | 194 | void SceneModifier::enableCylinder(bool enabled) 195 | { 196 | m_cylinderEntity->setEnabled(enabled); 197 | } 198 | 199 | void SceneModifier::enableCuboid(bool enabled) 200 | { 201 | m_cuboidEntity->setEnabled(enabled); 202 | } 203 | 204 | void SceneModifier::enablePlane(bool enabled) 205 | { 206 | m_planeEntity->setEnabled(enabled); 207 | } 208 | 209 | void SceneModifier::enableSphere(bool enabled) 210 | { 211 | m_sphereEntity->setEnabled(enabled); 212 | } 213 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------