Point
VTKExamples/Cxx/GeometricObjects/Point
Code¶
Point.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkPoints.h> #include <vtkCellArray.h> #include <vtkPolyData.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkProperty.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> int main(int, char *[]) { // Create the geometry of a point (the coordinate) vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New(); const float p[3] = {1.0, 2.0, 3.0}; // Create the topology of the point (a vertex) vtkSmartPointer<vtkCellArray> vertices = vtkSmartPointer<vtkCellArray>::New(); vtkIdType pid[1]; pid[0] = points->InsertNextPoint(p); vertices->InsertNextCell(1,pid); // Create a polydata object vtkSmartPointer<vtkPolyData> point = vtkSmartPointer<vtkPolyData>::New(); // Set the points and vertices we created as the geometry and topology of the polydata point->SetPoints(points); point->SetVerts(vertices); // Visualize vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); #if VTK_MAJOR_VERSION <= 5 mapper->SetInput(point); #else mapper->SetInputData(point); #endif vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); actor->GetProperty()->SetPointSize(20); 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(actor); renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(Point) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(Point MACOSX_BUNDLE Point.cxx) target_link_libraries(Point ${VTK_LIBRARIES})
Download and Build Point¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download Point and its CMakeLists.txt file. Once the tarball Point.tar has been downloaded and extracted,
cd Point/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:
./Point
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.