VectorOfActors
vtk-examples/Cxx/Visualization/VectorOfActors
Description¶
This example creates multiple actors and stores them in a vector. The resulting image is 10 spheres in a line.
Question
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Code¶
VectorOfActors.cxx
#include <vtkActor.h>
#include <vtkInteractorStyleTrackball.h>
#include <vtkInteractorStyleTrackballCamera.h>
#include <vtkNew.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkProperty.h>
#include <vector>
int main(int, char*[])
{
vtkNew<vtkNamedColors> colors;
std::vector<vtkSmartPointer<vtkActor>> actors;
for (unsigned int i = 0; i < 10; i++)
{
vtkNew<vtkSphereSource> sphereSource;
sphereSource->SetCenter(i, 0.0, 0.0);
sphereSource->SetRadius(0.2);
vtkNew<vtkPolyDataMapper> mapper;
mapper->SetInputConnection(sphereSource->GetOutputPort());
vtkNew<vtkActor> actor;
actor->SetMapper(mapper);
actor->GetProperty()->SetColor(colors->GetColor3d("MistyRose").GetData());
actors.push_back(actor);
}
// A renderer and render window
vtkNew<vtkRenderer> renderer;
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->AddRenderer(renderer);
renderWindow->SetWindowName("VectorOfActors");
// An interactor
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow);
// Add the actors to the scene
for (unsigned int i = 0; i < actors.size(); i++)
{
renderer->AddActor(actors[i]);
}
renderer->SetBackground(colors->GetColor3d("DarkSlateGray").GetData());
// Render
renderWindow->Render();
vtkNew<vtkInteractorStyleTrackballCamera> style;
renderWindowInteractor->SetInteractorStyle(style);
// Begin mouse interaction
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
project(VectorOfActors)
find_package(VTK COMPONENTS
vtkCommonColor
vtkCommonCore
vtkCommonDataModel
vtkFiltersSources
vtkInteractionStyle
vtkRenderingContextOpenGL2
vtkRenderingCore
vtkRenderingFreeType
vtkRenderingGL2PSOpenGL2
vtkRenderingOpenGL2
QUIET
)
if (NOT VTK_FOUND)
message("Skipping VectorOfActors: ${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(VectorOfActors MACOSX_BUNDLE VectorOfActors.cxx )
target_link_libraries(VectorOfActors PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(VectorOfActors MACOSX_BUNDLE VectorOfActors.cxx )
target_link_libraries(VectorOfActors PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS VectorOfActors
MODULES ${VTK_LIBRARIES}
)
endif ()
Download and Build VectorOfActors¶
Click here to download VectorOfActors and its CMakeLists.txt file. Once the tarball VectorOfActors.tar has been downloaded and extracted,
cd VectorOfActors/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:
./VectorOfActors
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.