HideAllActors
VTKExamples/Cxx/Visualization/HideAllActors
Description
Display two spheres, then hide everything and turn the screen red.
Code
HideAllActors.cxx
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyData.h>
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkInteractorStyleTrackballCamera.h>
#include <vtkInteractorStyleTrackball.h>
int main(int, char *[])
{
// Sphere 1
vtkSmartPointer<vtkSphereSource> sphereSource1 =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource1->SetCenter(0.0, 0.0, 0.0);
sphereSource1->SetRadius(4.0);
sphereSource1->Update();
vtkSmartPointer<vtkPolyDataMapper> mapper1 =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapper1->SetInputConnection(sphereSource1->GetOutputPort());
vtkSmartPointer<vtkActor> actor1 =
vtkSmartPointer<vtkActor>::New();
actor1->SetMapper(mapper1);
// Sphere 2
vtkSmartPointer<vtkSphereSource> sphereSource2 =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource2->SetCenter(10.0, 0.0, 0.0);
sphereSource2->SetRadius(3.0);
sphereSource2->Update();
// Create a mapper
vtkSmartPointer<vtkPolyDataMapper> mapper2 =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapper2->SetInputConnection(sphereSource2->GetOutputPort());
// Create an actor
vtkSmartPointer<vtkActor> actor2 =
vtkSmartPointer<vtkActor>::New();
actor2->SetMapper(mapper2);
// A renderer and render window
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
// An interactor
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
// Add the actors to the scene
renderer->AddActor(actor1);
renderer->AddActor(actor2);
renderer->SetBackground(1,1,1); // Background color white
// Render an image (lights and cameras are created automatically)
renderWindow->Render();
vtkSmartPointer<vtkInteractorStyleTrackballCamera> style =
vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();
renderWindowInteractor->SetInteractorStyle( style );
// Begin mouse interaction
renderWindowInteractor->Start();
renderer->RemoveAllViewProps();
renderer->SetBackground(1,0,0);
renderer->Render();
renderer->ResetCamera();
// Why doesn't the screen turn red until I click/move the mouse?
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(HideAllActors)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(HideAllActors MACOSX_BUNDLE HideAllActors.cxx)
target_link_libraries(HideAllActors ${VTK_LIBRARIES})
Download and Build HideAllActors
Click here to download HideAllActors and its CMakeLists.txt file. Once the tarball HideAllActors.tar has been downloaded and extracted,
cd HideAllActors/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:
./HideAllActors
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.