PointLocatorRadius
VTKExamples/Cxx/PolyData/PointLocatorRadius
Code
PointLocatorRadius.cxx
#include <vtkSmartPointer.h>
#include <vtkIdList.h>
#include <vtkPolyDataMapper.h>
#include <vtkObjectFactory.h>
#include <vtkPointSource.h>
#include <vtkPolyData.h>
#include <vtkPointLocator.h>
int main(int, char *[])
{
vtkSmartPointer<vtkPointSource> pointSource =
vtkSmartPointer<vtkPointSource>::New();
pointSource->SetNumberOfPoints(400);
pointSource->Update();
// Create the tree
vtkSmartPointer<vtkPointLocator> pointLocator =
vtkSmartPointer<vtkPointLocator>::New();
pointLocator->SetDataSet(pointSource->GetOutput());
pointLocator->AutomaticOn();
pointLocator->SetNumberOfPointsPerBucket(2);
pointLocator->BuildLocator();
double radius = .1;
double center[3] = {0.0, 0.0, 0.0};
vtkSmartPointer<vtkIdList> result =
vtkSmartPointer<vtkIdList>::New();
pointLocator->FindPointsWithinRadius (radius, center, result);
for(vtkIdType i = 0; i < result->GetNumberOfIds(); i++)
{
unsigned int id = result->GetId(i);
std::cout << "id of point " << i << " : " << id << std::endl;
}
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(PointLocatorRadius)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(PointLocatorRadius MACOSX_BUNDLE PointLocatorRadius.cxx)
target_link_libraries(PointLocatorRadius ${VTK_LIBRARIES})
Download and Build PointLocatorRadius
Click here to download PointLocatorRadius and its CMakeLists.txt file. Once the tarball PointLocatorRadius.tar has been downloaded and extracted,
cd PointLocatorRadius/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:
./PointLocatorRadius
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.