PolyDataGetPoint
VTKExamples/Cxx/PolyData/PolyDataGetPoint
Description¶
This example demonstrates how to obtain the coordinates of a point in a vtkPolyData object.
- Suggested by Sara Rolfe
Code¶
PolyDataGetPoint.cxx
#include <vtkSphereSource.h> #include <vtkSmartPointer.h> #include <vtkPolyData.h> int main(int, char*[]) { // Create a sphere vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->Update(); vtkPolyData* polydata = sphereSource->GetOutput(); // Write all of the coordinates of the points in the vtkPolyData to the console. for(vtkIdType i = 0; i < polydata->GetNumberOfPoints(); i++) { double p[3]; polydata->GetPoint(i,p); // This is identical to: // polydata->GetPoints()->GetPoint(i,p); std::cout << "Point " << i << " : (" << p[0] << " " << p[1] << " " << p[2] << ")" << std::endl; } return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(PolyDataGetPoint) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(PolyDataGetPoint MACOSX_BUNDLE PolyDataGetPoint.cxx) target_link_libraries(PolyDataGetPoint ${VTK_LIBRARIES})
Download and Build PolyDataGetPoint¶
Danger
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Click here to download PolyDataGetPoint and its CMakeLists.txt file. Once the tarball PolyDataGetPoint.tar has been downloaded and extracted,
cd PolyDataGetPoint/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:
./PolyDataGetPoint
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.