BandedPolyDataContourFilter
VTKEx/Cxx/VisualizationAlgorithms/BandedPolyDataContourFilter
Description¶
Note
This original source code for this example is here.
Other languages
See (CSharp)
Question
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Code¶
BandedPolyDataContourFilter.cxx
#include <vtkSmartPointer.h>
#include <vtkBandedPolyDataContourFilter.h>
#include <vtkCellArray.h>
#include <vtkFloatArray.h>
#include <vtkPointData.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkCamera.h>
#include <vtkNamedColors.h>
int main(int, char *[])
{
vtkSmartPointer<vtkNamedColors> colors =
vtkSmartPointer<vtkNamedColors>::New();
vtkSmartPointer<vtkPoints> pts =
vtkSmartPointer<vtkPoints>::New();
pts->InsertPoint( 0, 0, 0, 0);
pts->InsertPoint( 1, 0, 1, 0);
pts->InsertPoint( 2, 0, 2, 0);
pts->InsertPoint( 3, 1, 0, 0);
pts->InsertPoint( 4, 1, 1, 0);
pts->InsertPoint( 5, 1, 2, 0);
pts->InsertPoint( 6, 2, 0, 0);
pts->InsertPoint( 7, 2, 2, 0);
pts->InsertPoint( 8, 3, 0, 0);
pts->InsertPoint( 9, 3, 1, 0);
pts->InsertPoint( 10, 3, 2, 0 );
pts->InsertPoint( 11, 4, 0, 0);
pts->InsertPoint( 12, 6, 0, 0 );
pts->InsertPoint( 13, 5, 2, 0 );
pts->InsertPoint( 14, 7, 0, 0);
pts->InsertPoint( 15, 9, 0, 0 );
pts->InsertPoint( 16, 7, 2, 0 );
pts->InsertPoint( 17, 9, 2, 0 );
pts->InsertPoint( 18, 10, 0, 0);
pts->InsertPoint( 19, 12, 0, 0 );
pts->InsertPoint( 20, 10, 1, 0 );
pts->InsertPoint( 21, 12, 1, 0 );
pts->InsertPoint( 22, 10, 2, 0 );
pts->InsertPoint( 23, 12, 2, 0 );
pts->InsertPoint( 24, 10, 3, 0 );
pts->InsertPoint( 25, 12, 3, 0);
vtkSmartPointer<vtkCellArray> polys =
vtkSmartPointer<vtkCellArray>::New();
polys->InsertNextCell( 4);
polys->InsertCellPoint( 14);
polys->InsertCellPoint( 15);
polys->InsertCellPoint( 17);
polys->InsertCellPoint( 16);
polys->InsertNextCell( 3);
polys->InsertCellPoint( 11);
polys->InsertCellPoint( 12);
polys->InsertCellPoint( 13);
vtkSmartPointer<vtkFloatArray> scalars =
vtkSmartPointer<vtkFloatArray>::New();
scalars->SetNumberOfTuples (26);
scalars->SetTuple1( 0, 0);
scalars->SetTuple1( 1, 50);
scalars->SetTuple1( 2, 100);
scalars->SetTuple1( 3, 0);
scalars->SetTuple1( 4, 50);
scalars->SetTuple1( 5, 100);
scalars->SetTuple1( 6, 10);
scalars->SetTuple1( 7, 90);
scalars->SetTuple1( 8, 10);
scalars->SetTuple1( 9, 50);
scalars->SetTuple1( 10, 90);
scalars->SetTuple1( 11, 10);
scalars->SetTuple1( 12, 40);
scalars->SetTuple1( 13, 100);
scalars->SetTuple1( 14, 0);
scalars->SetTuple1( 15, 60);
scalars->SetTuple1( 16, 40);
scalars->SetTuple1( 17, 100);
scalars->SetTuple1( 18, 0);
scalars->SetTuple1( 19, 25);
scalars->SetTuple1( 20, 25);
scalars->SetTuple1( 21, 50);
scalars->SetTuple1( 22, 50);
scalars->SetTuple1( 23, 75);
scalars->SetTuple1( 24, 75);
scalars->SetTuple1( 25, 100);
vtkSmartPointer<vtkPolyData> polyData =
vtkSmartPointer<vtkPolyData>::New();
polyData->SetPoints(pts);
polyData->SetPolys(polys);
polyData->GetPointData()->SetScalars(scalars);
vtkSmartPointer<vtkBandedPolyDataContourFilter> bf =
vtkSmartPointer<vtkBandedPolyDataContourFilter>::New();
bf->SetInputData (polyData);
bf->GenerateValues(5, 25, 75 );
vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInputConnection(bf->GetOutputPort());
mapper->SetScalarModeToUseCellData();
mapper->SetScalarRange (0, 4);
vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
// Create the RenderWindow, Renderer and both Actors
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
vtkSmartPointer<vtkRenderWindowInteractor> interactor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
interactor->SetRenderWindow(renderWindow);
// Add the actors to the renderer, set the background and size
renderer->AddActor(actor);
renderWindow->SetSize (1200, 400);
renderWindow->Render();
renderer->GetActiveCamera()->Zoom(3);
renderer->SetBackground(colors->GetColor3d("Melon").GetData());
renderWindow->Render();
interactor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
project(BandedPolyDataContourFilter)
find_package(VTK COMPONENTS
vtkvtkCommonColor
vtkvtkCommonCore
vtkvtkCommonDataModel
vtkvtkFiltersModeling
vtkvtkInteractionStyle
vtkvtkRenderingContextOpenGL2
vtkvtkRenderingCore
vtkvtkRenderingFreeType
vtkvtkRenderingGL2PSOpenGL2
vtkvtkRenderingOpenGL2 QUIET)
if (NOT VTK_FOUND)
message("Skipping BandedPolyDataContourFilter: ${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(BandedPolyDataContourFilter MACOSX_BUNDLE BandedPolyDataContourFilter.cxx )
target_link_libraries(BandedPolyDataContourFilter PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(BandedPolyDataContourFilter MACOSX_BUNDLE BandedPolyDataContourFilter.cxx )
target_link_libraries(BandedPolyDataContourFilter PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS BandedPolyDataContourFilter
MODULES ${VTK_LIBRARIES}
)
endif ()
Download and Build BandedPolyDataContourFilter¶
Click here to download BandedPolyDataContourFilter and its CMakeLists.txt file. Once the tarball BandedPolyDataContourFilter.tar has been downloaded and extracted,
cd BandedPolyDataContourFilter/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:
./BandedPolyDataContourFilter
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.