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RTAnalyticSource

vtk-examples/Cxx/Images/RTAnalyticSource

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Question

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Code

RTAnalyticSource.cxx

#include <vtkActor.h>
#include <vtkImageActor.h>
#include <vtkImageData.h>
#include <vtkImageMapper3D.h>
#include <vtkInteractorStyleImage.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkRTAnalyticSource.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

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

  vtkNew<vtkRTAnalyticSource> analyticSource;
  analyticSource->SetWholeExtent(-10, 10, -10, 10, 0, 0);

  vtkNew<vtkImageActor> imageActor;
  imageActor->GetMapper()->SetInputConnection(analyticSource->GetOutputPort());

  vtkNew<vtkRenderWindow> renderWindow;
  renderWindow->SetWindowName("RTAnalyticSource");

  vtkNew<vtkRenderWindowInteractor> interactor;

  vtkNew<vtkInteractorStyleImage> style;
  interactor->SetInteractorStyle(style);

  interactor->SetRenderWindow(renderWindow);

  // Setup both renderers
  vtkNew<vtkRenderer> renderer;
  renderer->SetBackground(colors->GetColor3d("Wheat").GetData());
  renderWindow->AddRenderer(renderer);

  renderer->AddActor(imageActor);

  renderer->ResetCamera();

  renderWindow->Render();
  interactor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(RTAnalyticSource)

find_package(VTK COMPONENTS 
  vtkCommonColor
  vtkCommonCore
  vtkCommonDataModel
  vtkImagingCore
  vtkInteractionStyle
  vtkRenderingContextOpenGL2
  vtkRenderingCore
  vtkRenderingFreeType
  vtkRenderingGL2PSOpenGL2
  vtkRenderingOpenGL2
  QUIET
)

if (NOT VTK_FOUND)
  message("Skipping RTAnalyticSource: ${VTK_NOT_FOUND_MESSAGE}")
  return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
  # old system
  include(${VTK_USE_FILE})
  add_executable(RTAnalyticSource MACOSX_BUNDLE RTAnalyticSource.cxx )
  target_link_libraries(RTAnalyticSource PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(RTAnalyticSource MACOSX_BUNDLE RTAnalyticSource.cxx )
  target_link_libraries(RTAnalyticSource PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS RTAnalyticSource
    MODULES ${VTK_LIBRARIES}
    )
endif ()

Download and Build RTAnalyticSource

Click here to download RTAnalyticSource and its CMakeLists.txt file. Once the tarball RTAnalyticSource.tar has been downloaded and extracted,

cd RTAnalyticSource/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:

./RTAnalyticSource

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.