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
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.