LegendScaleActor

#include <vtkActor.h>
#include <vtkLegendScaleActor.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkParametricEnneper.h>
#include <vtkParametricFunctionSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

int main(int, char*[])
{
  vtkNew<vtkNamedColors> colors;

  // The source will be a parametric function.
  vtkNew<vtkParametricEnneper> src;
  vtkNew<vtkParametricFunctionSource> fnSrc;
  fnSrc->SetParametricFunction(src);

  // Create a mapper and actor.
  vtkNew<vtkPolyDataMapper> mapper;
  mapper->SetInputConnection(fnSrc->GetOutputPort());
  vtkNew<vtkActor> actor;
  actor->SetMapper(mapper);
  actor->GetProperty()->SetColor(colors->GetColor3d("MistyRose").GetData());

  // Create a renderer, render window, and interactor.
  vtkNew<vtkRenderer> renderer;
  vtkNew<vtkRenderWindow> renderWindow;
  renderWindow->AddRenderer(renderer);
  renderWindow->SetWindowName("LegendScaleActor");

  vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
  renderWindowInteractor->SetRenderWindow(renderWindow);

  vtkNew<vtkLegendScaleActor> legendScaleActor;

  // Add the actor to the scene.
  renderer->AddActor(actor);
  renderer->AddActor(legendScaleActor);

  renderer->SetBackground(colors->GetColor3d("RoyalBlue").GetData());

  // Render and interact.
  renderWindow->Render();
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(LegendScaleActor)

find_package(VTK COMPONENTS 
  CommonColor
  CommonComputationalGeometry
  CommonCore
  FiltersSources
  InteractionStyle
  RenderingAnnotation
  RenderingContextOpenGL2
  RenderingCore
  RenderingFreeType
  RenderingGL2PSOpenGL2
  RenderingOpenGL2
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "LegendScaleActor: Unable to find the VTK build folder.")
endif()

# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
add_executable(LegendScaleActor MACOSX_BUNDLE LegendScaleActor.cxx )
  target_link_libraries(LegendScaleActor PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
  TARGETS LegendScaleActor
  MODULES ${VTK_LIBRARIES}
)

cd LegendScaleActor/build

cmake ..

cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

make

./LegendScaleActor