VTK/Examples/Cxx/Visualization/LegendScaleActor

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VTK Examples Baseline Visualization TestLegendScaleActor.png

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;
}

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.