BoundaryEdges
VTKExamples/Cxx/Meshes/BoundaryEdges
Description
This filter will extract the boundary edges of a mesh. The original mesh is shown with the feature edges shown in red.
Code
BoundaryEdges.cxx
#include <vtkSmartPointer.h>
#include <vtkFeatureEdges.h>
#include <vtkPolyData.h>
#include <vtkDiskSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
int main(int, char *[])
{
vtkSmartPointer<vtkDiskSource> diskSource =
vtkSmartPointer<vtkDiskSource>::New();
diskSource->Update();
vtkSmartPointer<vtkFeatureEdges> featureEdges =
vtkSmartPointer<vtkFeatureEdges>::New();
featureEdges->SetInputConnection(diskSource->GetOutputPort());
featureEdges->BoundaryEdgesOn();
featureEdges->FeatureEdgesOff();
featureEdges->ManifoldEdgesOff();
featureEdges->NonManifoldEdgesOff();
featureEdges->Update();
// Visualize
vtkSmartPointer<vtkPolyDataMapper> edgeMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
edgeMapper->SetInputConnection(featureEdges->GetOutputPort());
vtkSmartPointer<vtkActor> edgeActor =
vtkSmartPointer<vtkActor>::New();
edgeActor->SetMapper(edgeMapper);
vtkSmartPointer<vtkPolyDataMapper> diskMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
diskMapper->SetInputConnection(diskSource->GetOutputPort());
vtkSmartPointer<vtkActor> diskActor =
vtkSmartPointer<vtkActor>::New();
diskActor->SetMapper(diskMapper);
// Create a renderer, render window, and interactor
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
renderer->AddActor(edgeActor);
renderer->AddActor(diskActor);
renderer->SetBackground(.3, .6, .3); // Background color green
renderWindow->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(BoundaryEdges)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(BoundaryEdges MACOSX_BUNDLE BoundaryEdges.cxx)
target_link_libraries(BoundaryEdges ${VTK_LIBRARIES})
Download and Build BoundaryEdges
Click here to download BoundaryEdges and its CMakeLists.txt file. Once the tarball BoundaryEdges.tar has been downloaded and extracted,
cd BoundaryEdges/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:
./BoundaryEdges
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.