SideBySideRenderWindowsQt
Repository source: SideBySideRenderWindowsQt
Description¶
Although this example includes ui_SideBySideRenderWindowsQt.h, this file is not distributed, it is created by Qt at compile time.
Question
If you have a question about this example, please use the VTK Discourse Forum
Code¶
SideBySideRenderWindowsQt.cxx
#include "SideBySideRenderWindowsQt.h"
#include "ui_SideBySideRenderWindowsQt.h"
#include <vtkCamera.h>
#include <vtkCubeSource.h>
#include <vtkElevationFilter.h>
#include <vtkGenericOpenGLRenderWindow.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyDataMapper.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkSphereSource.h>
#include <vtkVersion.h>
#if VTK_VERSION_NUMBER >= 89000000000ULL
#define VTK890 1
#endif
// Constructor
SideBySideRenderWindowsQt::SideBySideRenderWindowsQt(QWidget* parent)
: QMainWindow(parent), ui(new Ui::SideBySideRenderWindowsQt)
{
this->ui->setupUi(this);
vtkNew<vtkNamedColors> colors;
vtkNew<vtkGenericOpenGLRenderWindow> renderWindowLeft;
vtkNew<vtkGenericOpenGLRenderWindow> renderWindowRight;
#if VTK890
this->ui->qvtkWidgetLeft->setRenderWindow(renderWindowLeft);
this->ui->qvtkWidgetRight->setRenderWindow(renderWindowRight);
#else
this->ui->qvtkWidgetLeft->SetRenderWindow(renderWindowLeft);
this->ui->qvtkWidgetRight->SetRenderWindow(renderWindowRight);
#endif
// Sphere
vtkNew<vtkSphereSource> sphereSource;
sphereSource->SetPhiResolution(30);
sphereSource->SetThetaResolution(30);
vtkNew<vtkElevationFilter> sphereElev;
sphereElev->SetInputConnection(sphereSource->GetOutputPort());
sphereElev->SetLowPoint(0, -1.0, 0);
sphereElev->SetHighPoint(0, 1.0, 0);
vtkNew<vtkPolyDataMapper> sphereMapper;
sphereMapper->SetInputConnection(sphereElev->GetOutputPort());
vtkNew<vtkActor> sphereActor;
sphereActor->SetMapper(sphereMapper);
// Cube
vtkNew<vtkCubeSource> cubeSource;
cubeSource->SetXLength(0.8);
cubeSource->SetYLength(0.8);
cubeSource->SetZLength(0.8);
vtkNew<vtkElevationFilter> cubeElev;
cubeElev->SetInputConnection(cubeSource->GetOutputPort());
cubeElev->SetLowPoint(0, -1.0, 0);
cubeElev->SetHighPoint(0, 1.0, 0);
vtkNew<vtkPolyDataMapper> cubeMapper;
cubeMapper->SetInputConnection(cubeElev->GetOutputPort());
vtkNew<vtkActor> cubeActor;
cubeActor->SetMapper(cubeMapper);
// VTK Renderer.
vtkNew<vtkRenderer> leftRenderer;
leftRenderer->AddActor(sphereActor);
leftRenderer->SetBackground(colors->GetColor3d("LightSteelBlue").GetData());
vtkNew<vtkRenderer> rightRenderer;
// Add Actor to renderer.
rightRenderer->AddActor(cubeActor);
rightRenderer->GetActiveCamera()->Azimuth(60);
rightRenderer->ResetCamera();
rightRenderer->GetActiveCamera()->Zoom(0.8);
rightRenderer->SetBackground(colors->GetColor3d("LightSteelBlue").GetData());
// VTK/Qt wedded.
#if VTK890
this->ui->qvtkWidgetLeft->renderWindow()->AddRenderer(leftRenderer);
this->ui->qvtkWidgetRight->renderWindow()->AddRenderer(rightRenderer);
#else
this->ui->qvtkWidgetLeft->GetRenderWindow()->AddRenderer(leftRenderer);
this->ui->qvtkWidgetRight->GetRenderWindow()->AddRenderer(rightRenderer);
#endif
// Set up action signals and slots.
connect(this->ui->actionExit, SIGNAL(triggered()), this, SLOT(slotExit()));
}
void SideBySideRenderWindowsQt::slotExit()
{
qApp->exit();
}
SideBySideRenderWindowsQt.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>SideBySideRenderWindowsQt</class>
<widget class="QMainWindow" name="SideBySideRenderWindowsQt">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>990</width>
<height>583</height>
</rect>
</property>
<property name="windowTitle">
<string>SideBySideRenderWindowsQt</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>
SideBySideRenderWindowsQt.h
#ifndef SideBySideRenderWindowsQt_H
#define SideBySideRenderWindowsQt_H
#include <QMainWindow>
/*
* See "The Single Inheritance Approach" in this link:
* [Using a Designer UI File in Your C++
* Application](https://doc.qt.io/qt-5/designer-using-a-ui-file.html)
*/
namespace Ui {
class SideBySideRenderWindowsQt;
}
class SideBySideRenderWindowsQt : public QMainWindow
{
Q_OBJECT
public:
// Constructor/Destructor
explicit SideBySideRenderWindowsQt(QWidget* parent = nullptr);
virtual ~SideBySideRenderWindowsQt() = default;
private:
// Designer form
Ui::SideBySideRenderWindowsQt* ui;
public slots:
void slotExit();
};
#endif
SideBySideRenderWindowsQtDriver.cxx
#include <QApplication>
#include <QSurfaceFormat>
#include "SideBySideRenderWindowsQt.h"
#include <QVTKOpenGLNativeWidget.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);
SideBySideRenderWindowsQt sideBySideRenderWindowsQt;
sideBySideRenderWindowsQt.show();
return app.exec();
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
if(POLICY CMP0020)
cmake_policy(SET CMP0020 NEW)
cmake_policy(SET CMP0071 NEW)
endif()
PROJECT(SideBySideRenderWindowsQt)
find_package(VTK COMPONENTS
CommonColor
CommonCore
FiltersCore
FiltersSources
InteractionStyle
RenderingContextOpenGL2
RenderingCore
RenderingFreeType
RenderingGL2PSOpenGL2
RenderingOpenGL2
GUISupportQt
RenderingQt
)
if(NOT VTK_FOUND)
message(FATAL_ERROR "SideBySideRenderWindowsQt: Unable to find the VTK build folder.")
endif()
if(NOT(TARGET VTK::GUISupportQt))
message(FATAL_ERROR "SideBySideRenderWindowsQt: VTK not built with Qt support.")
endif()
if(NOT DEFINED VTK_QT_VERSION)
set(VTK_QT_VERSION 5)
endif()
set(qt_components Core Gui Widgets)
if(${VTK_QT_VERSION} VERSION_GREATER_EQUAL 6)
list(APPEND qt_components OpenGLWidgets)
endif()
list(SORT qt_components)
# We have ui files, so this will also bring in the macro:
# qt5_wrap_ui or qt_wrap_ui from Widgets.
find_package(Qt${VTK_QT_VERSION} QUIET
REQUIRED COMPONENTS ${qt_components}
)
foreach(_qt_comp IN LISTS qt_components)
list(APPEND qt_modules "Qt${VTK_QT_VERSION}::${_qt_comp}")
endforeach()
message (STATUS "VTK_VERSION: ${VTK_VERSION}, Qt Version: ${Qt${VTK_QT_VERSION}Widgets_VERSION}")
# Instruct CMake to run moc and uic automatically when needed.
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTOUIC ON)
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)
# For VTK versions greater than or equal to 8.90.0:
# CMAKE_AUTOUIC is ON so we handle uic automatically for Qt targets.
# CMAKE_AUTOMOC is ON so we handle moc automatically for Qt targets.
# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
# CMAKE_AUTOMOC in ON so the MOC headers will be automatically wrapped.
add_executable(SideBySideRenderWindowsQt MACOSX_BUNDLE
${CXX_FILES} ${UI_FILES} ${QT_WRAP}
)
if (Qt${VTK_QT_VERSION}Widgets_VERSION VERSION_LESS "5.11.0")
qt5_use_modules(SideBySideRenderWindowsQt ${qt_components})
else()
target_link_libraries(SideBySideRenderWindowsQt ${qt_modules})
endif()
target_link_libraries(SideBySideRenderWindowsQt ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS SideBySideRenderWindowsQt
MODULES ${VTK_LIBRARIES}
)
Download and Build SideBySideRenderWindowsQt¶
Click here to download SideBySideRenderWindowsQt and its CMakeLists.txt file. Once the tarball SideBySideRenderWindowsQt.tar has been downloaded and extracted,
cd SideBySideRenderWindowsQt/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=/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:
./SideBySideRenderWindowsQt
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.