ShareCameraQt
VTKExamples/Cxx/Qt/ShareCameraQt
Code¶
ShareCameraQt.cxx
#include "ShareCameraQt.h" #include <vtkCamera.h> #include <vtkCommand.h> #include <vtkCubeSource.h> #include <vtkDataObjectToTable.h> #include <vtkElevationFilter.h> #include <vtkGenericOpenGLRenderWindow.h> #include <vtkNamedColors.h> #include <vtkNew.h> #include <vtkPolyDataMapper.h> #include <vtkProperty.h> #include <vtkQtTableView.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkSmartPointer.h> #include <vtkSphereSource.h> // Constructor ShareCameraQt::ShareCameraQt() { this->setupUi(this); vtkNew<vtkNamedColors> colors; vtkNew<vtkGenericOpenGLRenderWindow> renderWindowLeft; this->qvtkWidgetLeft->SetRenderWindow(renderWindowLeft); vtkNew<vtkGenericOpenGLRenderWindow> renderWindowRight; this->qvtkWidgetRight->SetRenderWindow(renderWindowRight); // Sphere vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->Update(); vtkSmartPointer<vtkPolyDataMapper> sphereMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); sphereMapper->SetInputConnection(sphereSource->GetOutputPort()); vtkSmartPointer<vtkActor> sphereActor = vtkSmartPointer<vtkActor>::New(); sphereActor->SetMapper(sphereMapper); sphereActor->GetProperty()->SetColor(colors->GetColor4d("Tomato").GetData()); // Cube vtkSmartPointer<vtkCubeSource> cubeSource = vtkSmartPointer<vtkCubeSource>::New(); cubeSource->Update(); vtkSmartPointer<vtkPolyDataMapper> cubeMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); cubeMapper->SetInputConnection(cubeSource->GetOutputPort()); vtkSmartPointer<vtkActor> cubeActor = vtkSmartPointer<vtkActor>::New(); cubeActor->SetMapper(cubeMapper); cubeActor->GetProperty()->SetColor( colors->GetColor4d("MediumSeaGreen").GetData()); // VTK Renderer vtkSmartPointer<vtkRenderer> leftRenderer = vtkSmartPointer<vtkRenderer>::New(); leftRenderer->AddActor(sphereActor); leftRenderer->SetBackground(colors->GetColor3d("LightSteelBlue").GetData()); vtkSmartPointer<vtkRenderer> rightRenderer = vtkSmartPointer<vtkRenderer>::New(); // Add Actor to renderer rightRenderer->AddActor(cubeActor); rightRenderer->SetBackground(colors->GetColor3d("LightSteelBlue").GetData()); // VTK/Qt wedded this->qvtkWidgetLeft->GetRenderWindow()->AddRenderer(leftRenderer); this->qvtkWidgetRight->GetRenderWindow()->AddRenderer(rightRenderer); rightRenderer->ResetCamera(); leftRenderer->ResetCamera(); // Here we share the camera rightRenderer->SetActiveCamera(leftRenderer->GetActiveCamera()); // Position the cube using the left renderer active camera leftRenderer->GetActiveCamera()->SetPosition(1.0, 0.8, 1.0); leftRenderer->GetActiveCamera()->SetFocalPoint(0, 0, 0); leftRenderer->ResetCamera(); leftRenderer->GetActiveCamera()->Zoom(0.8); // Set up action signals and slots connect(this->actionExit, SIGNAL(triggered()), this, SLOT(slotExit())); this->qvtkWidgetLeft->GetRenderWindow()->AddObserver( vtkCommand::ModifiedEvent, this, &ShareCameraQt::ModifiedHandler); } void ShareCameraQt::ModifiedHandler() { this->qvtkWidgetRight->GetRenderWindow()->Render(); } void ShareCameraQt::slotExit() { qApp->exit(); }
ShareCameraQt.h
#ifndef ShareCameraQt_H #define ShareCameraQt_H #include <QMainWindow> #include "ui_ShareCameraQt.h" class ShareCameraQt : public QMainWindow, public Ui::ShareCameraQt { Q_OBJECT public: // Constructor/Destructor ShareCameraQt(); ~ShareCameraQt() {}; public slots: virtual void slotExit(); protected: void ModifiedHandler(); }; #endif
ShareCameraQtDriver.cxx
#include <QApplication> #include <QSurfaceFormat> #include <QVTKOpenGLNativeWidget.h> #include "ShareCameraQt.h" int main( int argc, char** argv ) { // needed to ensure appropriate OpenGL context is created for VTK rendering. QSurfaceFormat::setDefaultFormat(QVTKOpenGLNativeWidget::defaultFormat()); // QT Stuff QApplication app( argc, argv ); ShareCameraQt shareCameraQt; shareCameraQt.show(); return app.exec(); }
ShareCameraQt.ui
<?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>ShareCameraQt</class> <widget class="QMainWindow" name="ShareCameraQt"> <property name="geometry"> <rect> <x>0</x> <y>0</y> <width>990</width> <height>583</height> </rect> </property> <property name="windowTitle"> <string>ShareCameraQt</string> </property> <property name="windowIcon"> <iconset resource="Icons/icons.qrc"> <normaloff>:/Icons/help.png</normaloff>:/Icons/help.png</iconset> </property> <property name="iconSize"> <size> <width>22</width> <height>22</height> </size> </property> <widget class="QWidget" name="centralwidget"> <widget class="QVTKOpenGLNativeWidget" name="qvtkWidgetLeft"> <property name="geometry"> <rect> <x>10</x> <y>20</y> <width>511</width> <height>541</height> </rect> </property> </widget> <widget class="QVTKOpenGLNativeWidget" name="qvtkWidgetRight"> <property name="geometry"> <rect> <x>540</x> <y>20</y> <width>441</width> <height>541</height> </rect> </property> </widget> </widget> <action name="actionOpenFile"> <property name="enabled"> <bool>true</bool> </property> <property name="icon"> <iconset resource="Icons/icons.qrc"> <normaloff>:/Icons/fileopen.png</normaloff>:/Icons/fileopen.png</iconset> </property> <property name="text"> <string>Open File...</string> </property> </action> <action name="actionExit"> <property name="icon"> <iconset> <normaloff/> </iconset> </property> <property name="text"> <string>Exit</string> </property> </action> <action name="actionPrint"> <property name="icon"> <iconset resource="Icons/icons.qrc"> <normaloff>:/Icons/print.png</normaloff>:/Icons/print.png</iconset> </property> <property name="text"> <string>Print</string> </property> </action> <action name="actionHelp"> <property name="icon"> <iconset resource="Icons/icons.qrc"> <normaloff>:/Icons/help.png</normaloff>:/Icons/help.png</iconset> </property> <property name="text"> <string>Help</string> </property> </action> <action name="actionSave"> <property name="icon"> <iconset resource="Icons/icons.qrc"> <normaloff>:/Icons/filesave.png</normaloff>:/Icons/filesave.png</iconset> </property> <property name="text"> <string>Save</string> </property> </action> </widget> <customwidgets> <customwidget> <class>QVTKOpenGLNativeWidget</class> <extends>QWidget</extends> <header>QVTKOpenGLNativeWidget.h</header> </customwidget> </customwidgets> <resources> <include location="Icons/icons.qrc"/> </resources> <connections/> </ui>
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR) if(POLICY CMP0020) cmake_policy(SET CMP0020 NEW) cmake_policy(SET CMP0071 NEW) endif() PROJECT(ShareCameraQt) find_package(VTK COMPONENTS vtkCommonColor vtkCommonCore vtkFiltersCore vtkFiltersSources vtkInfovisCore vtkInteractionStyle vtkRenderingContextOpenGL2 vtkRenderingCore vtkRenderingFreeType vtkRenderingGL2PSOpenGL2 vtkRenderingOpenGL2 vtkViewsQt QUIET ) if (NOT VTK_FOUND) message("Skipping ShareCameraQt: ${VTK_NOT_FOUND_MESSAGE}") return () endif() message (STATUS "VTK_VERSION: ${VTK_VERSION}") if(vtkGUISupportQt_LOADED OR TARGET VTK::GUISupportQt) if (VTK_VERSION VERSION_LESS "8.90.0") # Instruct CMake to run moc automatically when needed. set(CMAKE_AUTOMOC ON) else() # Instruct CMake to run moc automatically when needed. set(CMAKE_AUTOMOC ON) set(CMAKE_AUTOUIC ON) endif() # We have ui files, this will bring in the macro: qt5_wrap_ui find_package(Qt5Widgets REQUIRED QUIET) else() message(STATUS "GuiSupportQt not found.") return() endif() include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}) file(GLOB UI_FILES *.ui) file(GLOB QT_WRAP *.h) file(GLOB CXX_FILES *.cxx) qt5_wrap_ui(UISrcs ${UI_FILES}) if (VTK_VERSION VERSION_LESS "8.90.0") # old system include(${VTK_USE_FILE}) # CMAKE_AUTOMOC in ON so the MOC headers will be automatically wrapped. add_executable(ShareCameraQt MACOSX_BUNDLE ${CXX_FILES} ${UISrcs} ${QT_WRAP}) qt5_use_modules(ShareCameraQt Core Gui) target_link_libraries(ShareCameraQt ${VTK_LIBRARIES}) else() # CMAKE_AUTOMOC in ON so the MOC headers will be automatically wrapped. add_executable(ShareCameraQt MACOSX_BUNDLE ${CXX_FILES} ${UISrcs} ${QT_WRAP}) qt5_use_modules(ShareCameraQt Core Gui) target_link_libraries(ShareCameraQt ${VTK_LIBRARIES}) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS ShareCameraQt MODULES ${VTK_LIBRARIES} ) endif()
Download and Build ShareCameraQt¶
Click here to download ShareCameraQt and its CMakeLists.txt file. Once the tarball ShareCameraQt.tar has been downloaded and extracted,
cd ShareCameraQt/build
This example requires Qt and VTK.
If VTK and Qt are installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
If Qt is not found on your system, you will need to tell CMake where to find qmake:
cmake -DQT_QMAKE_EXECUTABLE:FILEPATH=/usr/something/qmake ..
Build the project:
make
and run it:
./ShareCameraQt
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time. You may also need to add a Qt related path.