VTK/Examples/Cxx/Visualization/HideAllActors

From KitwarePublic
< VTK‎ | Examples‎ | Cxx
Revision as of 00:28, 11 December 2012 by Lorensen (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
VTK Examples Baseline Visualization TestHideActors.png

Display two spheres, then hide everything and turn the screen red.

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;
}

Please try the new VTKExamples website.

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)
 
if(VTK_LIBRARIES)
  target_link_libraries(HideAllActors ${VTK_LIBRARIES})
else()
  target_link_libraries(HideAllActors vtkHybrid vtkWidgets)
endif()

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.

Output image produced is bad.