MarchingCasesA

vtk-examples/Cxx/VisualizationAlgorithms/MarchingCasesA

Description¶

Marching cubes cases for 3D isosurface generation. The 256 possible cases have been reduced to 15 cases using symmetry. Red vertices are greater than the selected isosurface value.

This example runs the example MarchingCases with the arguments 15 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14.

Info

See Figure 6-6 in Chapter 6 the VTK Textbook.

Other languages

See (Python)

Question

If you have a question about this example, please use the VTK Discourse Forum

Code¶

MarchingCasesA.cxx

#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkContourFilter.h>
#include <vtkCubeSource.h>
#include <vtkExtractEdges.h>
#include <vtkFloatArray.h>
#include <vtkGlyph3D.h>
#include <vtkIdList.h>
#include <vtkNamedColors.h>
#include <vtkPointData.h>
#include <vtkPoints.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkShrinkPolyData.h>
#include <vtkSphereSource.h>
#include <vtkThresholdPoints.h>
#include <vtkTransform.h>
#include <vtkTransformPolyDataFilter.h>
#include <vtkTubeFilter.h>
#include <vtkUnstructuredGrid.h>
#include <vtkVectorText.h>

#include "MarchingCases.cxx"

CMakeLists.txt¶

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(MarchingCasesA)

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

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

Download and Build MarchingCasesA¶

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

cd MarchingCasesA/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:

./MarchingCasesA

WINDOWS USERS

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