DistancePolyDataFilter
VTKExamples/Cxx/PolyData/DistancePolyDataFilter
Description
NOTE: This example requires version 5.9.20111206 or higher.
Code
DistancePolyDataFilter.cxx
#include <vtkVersion.h>
#include <vtkSmartPointer.h>
#include <vtkActor.h>
#include <vtkDistancePolyDataFilter.h>
#include <vtkPolyDataMapper.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyDataReader.h>
#include <vtkCleanPolyData.h>
#include <vtkProperty.h>
#include <vtkPointData.h>
#include <vtkScalarBarActor.h>
#include <vtkSphereSource.h>
int main(int argc, char* argv[])
{
vtkSmartPointer<vtkPolyData> input1;
vtkSmartPointer<vtkPolyData> input2;
if (argc == 3)
{
// std::cerr << "Usage: " << argv[0]
// << " filename1.vtk"
// << " filename2.vtk" << std::endl;
vtkSmartPointer<vtkPolyDataReader> reader1 =
vtkSmartPointer<vtkPolyDataReader>::New();
reader1->SetFileName(argv[1]);
reader1->Update();
input1 = reader1->GetOutput();
vtkSmartPointer<vtkPolyDataReader> reader2 =
vtkSmartPointer<vtkPolyDataReader>::New();
reader2->SetFileName(argv[2]);
reader2->Update();
input2 = reader2->GetOutput();
}
else
{
vtkSmartPointer<vtkSphereSource> sphereSource1 =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource1->SetCenter(1, 0, 0);
sphereSource1->Update();
input1 = sphereSource1->GetOutput();
vtkSmartPointer<vtkSphereSource> sphereSource2 =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource2->Update();
input2 = sphereSource2->GetOutput();
}
vtkSmartPointer<vtkCleanPolyData> clean1 =
vtkSmartPointer<vtkCleanPolyData>::New();
#if VTK_MAJOR_VERSION <= 5
clean1->SetInputConnection( input1->GetProducerPort());
#else
clean1->SetInputData( input1);
#endif
vtkSmartPointer<vtkCleanPolyData> clean2 =
vtkSmartPointer<vtkCleanPolyData>::New();
#if VTK_MAJOR_VERSION <= 5
clean2->SetInputConnection( input2->GetProducerPort());
#else
clean2->SetInputData( input2);
#endif
vtkSmartPointer<vtkDistancePolyDataFilter> distanceFilter =
vtkSmartPointer<vtkDistancePolyDataFilter>::New();
distanceFilter->SetInputConnection( 0, clean1->GetOutputPort() );
distanceFilter->SetInputConnection( 1, clean2->GetOutputPort() );
distanceFilter->Update();
vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInputConnection( distanceFilter->GetOutputPort() );
mapper->SetScalarRange(
distanceFilter->GetOutput()->GetPointData()->GetScalars()->GetRange()[0],
distanceFilter->GetOutput()->GetPointData()->GetScalars()->GetRange()[1]);
vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper( mapper );
vtkSmartPointer<vtkScalarBarActor> scalarBar =
vtkSmartPointer<vtkScalarBarActor>::New();
scalarBar->SetLookupTable(mapper->GetLookupTable());
scalarBar->SetTitle("Distance");
scalarBar->SetNumberOfLabels(4);
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renWin =
vtkSmartPointer<vtkRenderWindow>::New();
renWin->AddRenderer( renderer );
vtkSmartPointer<vtkRenderWindowInteractor> renWinInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renWinInteractor->SetRenderWindow( renWin );
renderer->AddActor( actor );
renderer->AddActor2D(scalarBar);
renWin->Render();
renWinInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(DistancePolyDataFilter)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(DistancePolyDataFilter MACOSX_BUNDLE DistancePolyDataFilter.cxx)
target_link_libraries(DistancePolyDataFilter ${VTK_LIBRARIES})
Download and Build DistancePolyDataFilter
Click here to download DistancePolyDataFilter and its CMakeLists.txt file. Once the tarball DistancePolyDataFilter.tar has been downloaded and extracted,
cd DistancePolyDataFilter/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:
./DistancePolyDataFilter
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.