ProgrammableGlyphFilter

#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkConeSource.h>
#include <vtkCubeSource.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProgrammableGlyphFilter.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSphereSource.h>

#include <iostream>
#include <string>

namespace {

void CalcGlyph(void* arg);

} // namespace

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

  // Create points.
  vtkNew<vtkPoints> points;
  points->InsertNextPoint(0, 0, 0);
  points->InsertNextPoint(5, 0, 0);
  points->InsertNextPoint(10, 0, 0);

  // Combine into a polydata.
  vtkNew<vtkPolyData> polydata;
  polydata->SetPoints(points);

  vtkNew<vtkProgrammableGlyphFilter> glyphFilter;
  glyphFilter->SetInputData(polydata);
  glyphFilter->SetGlyphMethod(CalcGlyph, glyphFilter);
  // need a default glyph, but this should not be used
  vtkNew<vtkConeSource> coneSource;
  glyphFilter->SetSourceConnection(coneSource->GetOutputPort());

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

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

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

  // Add the actor to the scene
  renderer->AddActor(actor);
  renderer->SetBackground(colors->GetColor3d("SlateGray").GetData());

  // Render and interact
  renderWindow->Render();

  renderer->GetActiveCamera()->Zoom(0.9);

  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

namespace {

void CalcGlyph(void* arg)
{

  vtkProgrammableGlyphFilter* glyphFilter =
      static_cast<vtkProgrammableGlyphFilter*>(arg);

  if (!glyphFilter)
  {
    std::cerr << "glyphFilter is not valid!" << std::endl;
    return;
  }
  double pointCoords[3];
  glyphFilter->GetPoint(pointCoords);

  std::cout << "Calling CalcGlyph for point " << glyphFilter->GetPointId()
            << std::endl;
  std::cout << "Point coords are: " << pointCoords[0] << " " << pointCoords[1]
            << " " << pointCoords[2] << std::endl;
  if (glyphFilter->GetPointId() == 0)
  {
    vtkNew<vtkConeSource> coneSource;
    coneSource->SetCenter(pointCoords);
    glyphFilter->SetSourceConnection(coneSource->GetOutputPort());
  }
  else if (glyphFilter->GetPointId() == 1)
  {
    vtkNew<vtkCubeSource> cubeSource;
    cubeSource->SetCenter(pointCoords);
    glyphFilter->SetSourceConnection(cubeSource->GetOutputPort());
  }
  else if (glyphFilter->GetPointId() == 2)
  {
    vtkNew<vtkSphereSource> sphereSource;
    sphereSource->SetCenter(pointCoords);
    glyphFilter->SetSourceConnection(sphereSource->GetOutputPort());
  }
}

} // namespace

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(ProgrammableGlyphFilter)

find_package(VTK COMPONENTS 
  CommonColor
  CommonCore
  CommonDataModel
  FiltersProgrammable
  FiltersSources
  InteractionStyle
  RenderingContextOpenGL2
  RenderingCore
  RenderingFreeType
  RenderingGL2PSOpenGL2
  RenderingOpenGL2
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "ProgrammableGlyphFilter: 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(ProgrammableGlyphFilter MACOSX_BUNDLE ProgrammableGlyphFilter.cxx )
  target_link_libraries(ProgrammableGlyphFilter PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
  TARGETS ProgrammableGlyphFilter
  MODULES ${VTK_LIBRARIES}
)

cd ProgrammableGlyphFilter/build

cmake ..

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

make

./ProgrammableGlyphFilter