VTK/Examples/Cxx/Visualization/LegendScaleActor

LegendScaleActor.cxx

#include <vtkSmartPointer.h>
#include <vtkLegendScaleActor.h>
#include <vtkPolyData.h>
#include <vtkSphereSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkLegendScaleActor.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkSphereSource> sphereSource = 
    vtkSmartPointer<vtkSphereSource>::New();
  sphereSource->Update();
  
  // Create a mapper and actor
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(sphereSource->GetOutputPort());
  vtkSmartPointer<vtkActor> actor =
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);
 
  // Create a renderer, render window, and interactor
  vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);
 
  vtkSmartPointer<vtkLegendScaleActor> legendScaleActor = 
    vtkSmartPointer<vtkLegendScaleActor>::New();
  
  // Add the actor to the scene
  renderer->AddActor(actor);
  renderer->AddActor(legendScaleActor);
  
  renderer->SetBackground(.3, .2, .3);
 
  // Render and interact
  renderWindow->Render();
  renderWindowInteractor->Start();
  
  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(LegendScaleActor)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(LegendScaleActor MACOSX_BUNDLE LegendScaleActor.cxx)

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

Download and Build LegendScaleActor

Click here to download LegendScaleActor. and its CMakeLists.txt file.

Once the tarball LegendScaleActor.tar has been downloaded and extracted,

cd LegendScaleActor/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:

./LegendScaleActor

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.