ScalarVisibility

VTKExamples/Cxx/Visualization/ScalarVisibility


Other Languages

See (Java)

Code

ScalarVisibility.cxx

#include <vtkActor.h>
#include <vtkPolyDataMapper.h>
#include <vtkPointSource.h>
#include <vtkProperty.h>
#include <vtkPolyData.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSmartPointer.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkPointSource> pointSource = vtkSmartPointer<vtkPointSource>::New();
  vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(pointSource->GetOutputPort());
  mapper->ScalarVisibilityOff();

  vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
  actor->SetMapper( mapper );
  unsigned char red[3] = {255, 0, 0};
  actor->GetProperty()->SetColor(red[0], red[1], red[2]);
  vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
  renderer->AddActor(actor);

  vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer( renderer );
  vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New();
  interactor->SetRenderWindow( renderWindow );

  renderWindow->Render();

  interactor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(ScalarVisibility)

find_package(VTK COMPONENTS 
  vtkCommonCore
  vtkCommonDataModel
  vtkFiltersSources
  vtkInteractionStyle
  vtkRenderingCore
  vtkRenderingFreeType
  vtkRenderingOpenGL2 QUIET)
if (NOT VTK_FOUND)
  message("Skipping ScalarVisibility: ${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(ScalarVisibility MACOSX_BUNDLE ScalarVisibility.cxx )
  target_link_libraries(ScalarVisibility PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(ScalarVisibility MACOSX_BUNDLE ScalarVisibility.cxx )
  target_link_libraries(ScalarVisibility PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS ScalarVisibility
    MODULES ${VTK_LIBRARIES}
    )
endif () 

Download and Build ScalarVisibility

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

cd ScalarVisibility/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:

./ScalarVisibility

WINDOWS USERS

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