VisualizeRectilinearGrid

VTKEx/Cxx/RectilinearGrid/VisualizeRectilinearGrid

Other languages

See (Java)

Question

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Code

VisualizeRectilinearGrid.cxx

#include <vtkSmartPointer.h>
#include <vtkRectilinearGrid.h>
#include <vtkMath.h>
#include <vtkDataSetMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkShrinkFilter.h>
#include <vtkDoubleArray.h>

int main(int, char *[])
{
  // Create a grid
  vtkSmartPointer<vtkRectilinearGrid> grid = 
    vtkSmartPointer<vtkRectilinearGrid>::New();

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

  vtkSmartPointer<vtkDoubleArray> xArray = 
    vtkSmartPointer<vtkDoubleArray>::New();
  xArray->InsertNextValue(0.0);
  xArray->InsertNextValue(2.0);

  vtkSmartPointer<vtkDoubleArray> yArray = 
    vtkSmartPointer<vtkDoubleArray>::New();
  yArray->InsertNextValue(0.0);
  yArray->InsertNextValue(1.0);
  yArray->InsertNextValue(2.0);

  vtkSmartPointer<vtkDoubleArray> zArray = 
    vtkSmartPointer<vtkDoubleArray>::New();
  zArray->InsertNextValue(0.0);
  zArray->InsertNextValue(5.0);

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

  vtkSmartPointer<vtkShrinkFilter> shrinkFilter = 
    vtkSmartPointer<vtkShrinkFilter>::New();
  shrinkFilter->SetInputData(grid);
  shrinkFilter->SetShrinkFactor(.8);

  // Create a mapper and actor
  vtkSmartPointer<vtkDataSetMapper> mapper = 
    vtkSmartPointer<vtkDataSetMapper>::New();
  mapper->SetInputConnection(shrinkFilter->GetOutputPort());

  vtkSmartPointer<vtkActor> actor = 
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);

  // Visualize
  vtkSmartPointer<vtkRenderer> renderer = 
    vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renderWindow = 
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = 
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);

  renderer->AddActor(actor);

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

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(VisualizeRectilinearGrid)

find_package(VTK COMPONENTS 
  vtkvtkCommonCore
  vtkvtkCommonDataModel
  vtkvtkFiltersGeneral
  vtkvtkInteractionStyle
  vtkvtkRenderingContextOpenGL2
  vtkvtkRenderingCore
  vtkvtkRenderingFreeType
  vtkvtkRenderingGL2PSOpenGL2
  vtkvtkRenderingOpenGL2 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.