MultipleRenderWindows
vtk-examples/Cxx/Visualization/MultipleRenderWindows
Description¶
This example creates 4 render windows. When you close one, the next one opens? Or do they all open simultaneously?
Question
If you have a question about this example, please use the VTK Discourse Forum
Code¶
MultipleRenderWindows.cxx
#include <vtkActor.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <sstream>
#include <vector>
int main(int, char*[])
{
std::vector<vtkSmartPointer<vtkRenderWindowInteractor>> interactors;
for (unsigned int i = 0; i < 4; i++)
{
vtkNew<vtkNamedColors> colors;
vtkNew<vtkRenderWindow> renderWindow;
vtkNew<vtkRenderer> renderer;
renderWindow->AddRenderer(renderer);
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
interactors.push_back(renderWindowInteractor);
renderWindowInteractor->SetRenderWindow(renderWindow);
renderWindow->Render();
std::stringstream ss;
ss << "Window " << i;
renderWindow->SetWindowName(ss.str().c_str());
renderWindow->SetPosition(i * 300, 0);
// create a sphere
vtkNew<vtkSphereSource> sphereSource;
sphereSource->SetCenter(0.0, 0.0, 0.0);
sphereSource->SetRadius(5.0);
sphereSource->Update();
// Create a mapper and actor
vtkNew<vtkPolyDataMapper> mapper;
mapper->SetInputConnection(sphereSource->GetOutputPort());
vtkNew<vtkActor> actor;
actor->SetMapper(mapper);
actor->GetProperty()->SetColor(colors->GetColor3d("MistyRose").GetData());
renderer->AddActor(actor);
renderer->SetBackground(colors->GetColor3d("SlateGray").GetData());
renderer->ResetCamera();
}
interactors[3]->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
project(MultipleRenderWindows)
find_package(VTK COMPONENTS
vtkCommonColor
vtkCommonCore
vtkCommonDataModel
vtkFiltersSources
vtkInteractionStyle
vtkRenderingContextOpenGL2
vtkRenderingCore
vtkRenderingFreeType
vtkRenderingGL2PSOpenGL2
vtkRenderingOpenGL2
QUIET
)
if (NOT VTK_FOUND)
message("Skipping MultipleRenderWindows: ${VTK_NOT_FOUND_MESSAGE}")
return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
# old system
include(${VTK_USE_FILE})
add_executable(MultipleRenderWindows MACOSX_BUNDLE MultipleRenderWindows.cxx )
target_link_libraries(MultipleRenderWindows PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(MultipleRenderWindows MACOSX_BUNDLE MultipleRenderWindows.cxx )
target_link_libraries(MultipleRenderWindows PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS MultipleRenderWindows
MODULES ${VTK_LIBRARIES}
)
endif ()
Download and Build MultipleRenderWindows¶
Click here to download MultipleRenderWindows and its CMakeLists.txt file. Once the tarball MultipleRenderWindows.tar has been downloaded and extracted,
cd MultipleRenderWindows/build
If VTK is 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 ..
Build the project:
make
and run it:
./MultipleRenderWindows
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.