PineRootConnectivityA

vtk-examples/Cxx/VisualizationAlgorithms/PineRootConnectivityA

Description¶

This example applies connectivity filter to remove noisy isosurface. Data is from 256^3 volume data of the root system of a pine tree.

The example runs PineRootConnectivity as follows:

PineRootConnectivityA pine_root.tri 1

Info

See Figure 9-51a in Chapter 9 The VTK Textbook.

Other languages

See (Python)

Question

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

Code¶

PineRootConnectivityA.cxx

#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkNamedColors.h>
#include <vtkPointData.h>
#include <vtkPointSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkStreamTracer.h>
#include <vtkStructuredGrid.h>
#include <vtkStructuredGridGeometryFilter.h>
#include <vtkStructuredGridOutlineFilter.h>
#include <vtkStructuredGridReader.h>

#include "PineRootConnectivity.cxx"

CMakeLists.txt¶

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(PineRootConnectivityA)

find_package(VTK COMPONENTS 
  CommonColor
  CommonDataModel
  FiltersCore
  FiltersFlowPaths
  FiltersGeometry
  FiltersSources
  IOLegacy
  InteractionStyle
  RenderingContextOpenGL2
  RenderingCore
  RenderingFreeType
  RenderingGL2PSOpenGL2
  RenderingOpenGL2
)

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

Download and Build PineRootConnectivityA¶

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

cd PineRootConnectivityA/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:

./PineRootConnectivityA

WINDOWS USERS

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