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VisualizeRectilinearGrid

vtk-examples/Cxx/RectilinearGrid/VisualizeRectilinearGrid


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See (Python), (Java)

Question

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Code

VisualizeRectilinearGrid.cxx

#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkDataSetMapper.h>
#include <vtkDoubleArray.h>
#include <vtkMath.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkProperty.h>
#include <vtkRectilinearGrid.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkShrinkFilter.h>

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

  // Create a grid
  vtkNew<vtkRectilinearGrid> grid;

  grid->SetDimensions(2, 3, 2);

  vtkNew<vtkDoubleArray> xArray;
  xArray->InsertNextValue(0.0);
  xArray->InsertNextValue(2.0);

  vtkNew<vtkDoubleArray> yArray;
  yArray->InsertNextValue(0.0);
  yArray->InsertNextValue(1.0);
  yArray->InsertNextValue(2.0);

  vtkNew<vtkDoubleArray> zArray;
  zArray->InsertNextValue(0.0);
  zArray->InsertNextValue(5.0);

  grid->SetXCoordinates(xArray);
  grid->SetYCoordinates(yArray);
  grid->SetZCoordinates(zArray);

  vtkNew<vtkShrinkFilter> shrinkFilter;
  shrinkFilter->SetInputData(grid);
  shrinkFilter->SetShrinkFactor(.8);

  // Create a mapper and actor
  vtkNew<vtkDataSetMapper> mapper;
  mapper->SetInputConnection(shrinkFilter->GetOutputPort());

  vtkNew<vtkActor> actor;
  actor->SetMapper(mapper);
  actor->GetProperty()->SetColor(colors->GetColor3d("PeachPuff").GetData());

  // Visualize
  vtkNew<vtkRenderer> renderer;
  vtkNew<vtkRenderWindow> renderWindow;
  renderWindow->AddRenderer(renderer);
  renderWindow->SetWindowName("VisualizeRectilinearGrid");

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

  renderer->AddActor(actor);
  renderer->SetBackground(colors->GetColor3d("SlateGray").GetData());
  renderer->GetActiveCamera()->Roll(10.0);
  renderer->GetActiveCamera()->Elevation(60.0);
  renderer->GetActiveCamera()->Azimuth(30.0);
  renderer->ResetCamera();

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

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(VisualizeRectilinearGrid)

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

if (NOT VTK_FOUND)
  message("Skipping VisualizeRectilinearGrid: ${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(VisualizeRectilinearGrid MACOSX_BUNDLE VisualizeRectilinearGrid.cxx )
  target_link_libraries(VisualizeRectilinearGrid PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(VisualizeRectilinearGrid MACOSX_BUNDLE VisualizeRectilinearGrid.cxx )
  target_link_libraries(VisualizeRectilinearGrid PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS VisualizeRectilinearGrid
    MODULES ${VTK_LIBRARIES}
    )
endif ()

Download and Build VisualizeRectilinearGrid

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

cd VisualizeRectilinearGrid/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:

./VisualizeRectilinearGrid

WINDOWS USERS

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