FillHoles
Description¶
This filter finds holes in a mesh and closes them.
Seealso
IdentifyHoles fills the holes and then identifies each hole.
Other languages
See (CSharp)
Question
If you have a simple question about this example contact us at VTKExProject If your question is more complex and may require extended discussion, please use the VTK Discourse Forum
Code¶
FillHoles.cxx
#include <vtkSmartPointer.h>
#include <vtkFillHolesFilter.h>
#include <vtkPolyDataNormals.h>
#include <vtkCleanPolyData.h>
#include <vtkSelectionNode.h>
#include <vtkInformation.h>
#include <vtkUnstructuredGrid.h>
#include <vtkPolyData.h>
#include <vtkPointData.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSelection.h>
#include <vtkSelectionNode.h>
#include <vtkSphereSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkProperty.h>
#include <vtkIdTypeArray.h>
#include <vtkExtractSelection.h>
#include <vtkDataSetSurfaceFilter.h>
#include <vtkBYUReader.h>
#include <vtkOBJReader.h>
#include <vtkPLYReader.h>
#include <vtkPolyDataReader.h>
#include <vtkSTLReader.h>
#include <vtkXMLPolyDataReader.h>
#include <vtkSphereSource.h>
#include <vtksys/SystemTools.hxx>
#include <vtkNamedColors.h>
namespace
{
vtkSmartPointer<vtkPolyData> ReadPolyData(const char *fileName);
}
int main(int argc, char *argv[])
{
vtkSmartPointer<vtkPolyData> input =
ReadPolyData(argc > 1 ? argv[1] : "");
vtkSmartPointer<vtkNamedColors> colors =
vtkSmartPointer<vtkNamedColors>::New();
vtkSmartPointer<vtkFillHolesFilter> fillHolesFilter =
vtkSmartPointer<vtkFillHolesFilter>::New();
fillHolesFilter->SetInputData(input);
fillHolesFilter->SetHoleSize(100000.0);
fillHolesFilter->Update();
// Make the triangle winding order consistent
vtkSmartPointer<vtkPolyDataNormals> normals =
vtkSmartPointer<vtkPolyDataNormals>::New();
normals->SetInputData(fillHolesFilter->GetOutput());
normals->ConsistencyOn();
normals->SplittingOff();
normals->Update();
#if 0
// Restore the original normals
normals->GetOutput()->GetPointData()->
SetNormals(input->GetPointData()->GetNormals());
#endif
// Visualize
// Define viewport ranges
// (xmin, ymin, xmax, ymax)
double leftViewport[4] = {0.0, 0.0, 0.5, 1.0};
double rightViewport[4] = {0.5, 0.0, 1.0, 1.0};
// Create a mapper and actor
vtkSmartPointer<vtkPolyDataMapper> originalMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
originalMapper->SetInputData(input);
vtkSmartPointer<vtkProperty> backfaceProp =
vtkSmartPointer<vtkProperty>::New();
backfaceProp->SetDiffuseColor(colors->GetColor3d("Banana").GetData());
vtkSmartPointer<vtkActor> originalActor =
vtkSmartPointer<vtkActor>::New();
originalActor->SetMapper(originalMapper);
originalActor->SetBackfaceProperty(backfaceProp);
originalActor->GetProperty()->SetDiffuseColor(
colors->GetColor3d("Flesh").GetData());
vtkSmartPointer<vtkPolyDataMapper> filledMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
filledMapper->SetInputData(fillHolesFilter->GetOutput());
vtkSmartPointer<vtkActor> filledActor =
vtkSmartPointer<vtkActor>::New();
filledActor->SetMapper(filledMapper);
filledActor->GetProperty()->SetDiffuseColor(
colors->GetColor3d("Flesh").GetData());
filledActor->SetBackfaceProperty(backfaceProp);
// Create a renderer, render window, and interactor
vtkSmartPointer<vtkRenderer> leftRenderer =
vtkSmartPointer<vtkRenderer>::New();
leftRenderer->SetViewport(leftViewport);
vtkSmartPointer<vtkRenderer> rightRenderer =
vtkSmartPointer<vtkRenderer>::New();
rightRenderer->SetViewport(rightViewport);
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->SetSize(600,300);
renderWindow->AddRenderer(leftRenderer);
renderWindow->AddRenderer(rightRenderer);
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
// Add the actor to the scene
leftRenderer->AddActor(originalActor);
rightRenderer->AddActor(filledActor);
leftRenderer->SetBackground(colors->GetColor3d("PaleGreen").GetData());
leftRenderer->GetActiveCamera()->SetPosition(0, -1, 0);
leftRenderer->GetActiveCamera()->SetFocalPoint(0, 0, 0);
leftRenderer->GetActiveCamera()->SetViewUp(0, 0, 1);
leftRenderer->GetActiveCamera()->Azimuth(30);
leftRenderer->GetActiveCamera()->Elevation(30);
leftRenderer->ResetCamera();
rightRenderer->SetBackground(colors->GetColor3d("LightGreen").GetData());
// Share the camera
rightRenderer->SetActiveCamera(leftRenderer->GetActiveCamera());
// Render and interact
renderWindow->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
void GenerateData(vtkPolyData* input)
{
// Create a sphere
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource->Update();
// Remove some cells
vtkSmartPointer<vtkIdTypeArray> ids =
vtkSmartPointer<vtkIdTypeArray>::New();
ids->SetNumberOfComponents(1);
// Set values
ids->InsertNextValue(2);
ids->InsertNextValue(10);
vtkSmartPointer<vtkSelectionNode> selectionNode =
vtkSmartPointer<vtkSelectionNode>::New();
selectionNode->SetFieldType(vtkSelectionNode::CELL);
selectionNode->SetContentType(vtkSelectionNode::INDICES);
selectionNode->SetSelectionList(ids);
selectionNode->GetProperties()->Set(vtkSelectionNode::INVERSE(), 1); //invert the selection
vtkSmartPointer<vtkSelection> selection =
vtkSmartPointer<vtkSelection>::New();
selection->AddNode(selectionNode);
vtkSmartPointer<vtkExtractSelection> extractSelection =
vtkSmartPointer<vtkExtractSelection>::New();
extractSelection->SetInputConnection(0, sphereSource->GetOutputPort());
extractSelection->SetInputData(1, selection);
extractSelection->Update();
// In selection
vtkSmartPointer<vtkDataSetSurfaceFilter> surfaceFilter =
vtkSmartPointer<vtkDataSetSurfaceFilter>::New();
surfaceFilter->SetInputConnection(extractSelection->GetOutputPort());
surfaceFilter->Update();
input->ShallowCopy(surfaceFilter->GetOutput());
}
// Snippets
namespace
{
vtkSmartPointer<vtkPolyData> ReadPolyData(const char *fileName)
{
vtkSmartPointer<vtkPolyData> polyData;
std::string extension = vtksys::SystemTools::GetFilenameExtension(std::string(fileName));
if (extension == ".ply")
{
vtkSmartPointer<vtkPLYReader> reader =
vtkSmartPointer<vtkPLYReader>::New();
reader->SetFileName (fileName);
reader->Update();
polyData = reader->GetOutput();
}
else if (extension == ".vtp")
{
vtkSmartPointer<vtkXMLPolyDataReader> reader =
vtkSmartPointer<vtkXMLPolyDataReader>::New();
reader->SetFileName (fileName);
reader->Update();
polyData = reader->GetOutput();
}
else if (extension == ".obj")
{
vtkSmartPointer<vtkOBJReader> reader =
vtkSmartPointer<vtkOBJReader>::New();
reader->SetFileName (fileName);
reader->Update();
polyData = reader->GetOutput();
}
else if (extension == ".stl")
{
vtkSmartPointer<vtkSTLReader> reader =
vtkSmartPointer<vtkSTLReader>::New();
reader->SetFileName (fileName);
reader->Update();
polyData = reader->GetOutput();
}
else if (extension == ".vtk")
{
vtkSmartPointer<vtkPolyDataReader> reader =
vtkSmartPointer<vtkPolyDataReader>::New();
reader->SetFileName (fileName);
reader->Update();
polyData = reader->GetOutput();
}
else if (extension == ".g")
{
vtkSmartPointer<vtkBYUReader> reader =
vtkSmartPointer<vtkBYUReader>::New();
reader->SetGeometryFileName (fileName);
reader->Update();
polyData = reader->GetOutput();
}
else
{
vtkSmartPointer<vtkSphereSource> source =
vtkSmartPointer<vtkSphereSource>::New();
source->Update();
polyData = source->GetOutput();
}
return polyData;
}
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
project(FillHoles)
find_package(VTK COMPONENTS
vtkvtkCommonColor
vtkvtkCommonCore
vtkvtkCommonDataModel
vtkvtkFiltersCore
vtkvtkFiltersExtraction
vtkvtkFiltersGeometry
vtkvtkFiltersModeling
vtkvtkFiltersSources
vtkvtkIOGeometry
vtkvtkIOLegacy
vtkvtkIOPLY
vtkvtkIOXML
vtkvtkInteractionStyle
vtkvtkRenderingContextOpenGL2
vtkvtkRenderingCore
vtkvtkRenderingFreeType
vtkvtkRenderingGL2PSOpenGL2
vtkvtkRenderingOpenGL2 QUIET)
if (NOT VTK_FOUND)
message("Skipping FillHoles: ${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(FillHoles MACOSX_BUNDLE FillHoles.cxx )
target_link_libraries(FillHoles PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(FillHoles MACOSX_BUNDLE FillHoles.cxx )
target_link_libraries(FillHoles PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS FillHoles
MODULES ${VTK_LIBRARIES}
)
endif ()
Download and Build FillHoles¶
Click here to download FillHoles and its CMakeLists.txt file. Once the tarball FillHoles.tar has been downloaded and extracted,
cd FillHoles/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:
./FillHoles
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.