VisualizeVTP

VTKExamples/Cxx/Visualization/VisualizeVTP


Description

This example shows how to load a vtp file and render it in an interactive window. The example accepts a .vtp file on the command line.

Code

VisualizeVTP.cxx

#include <vtkSmartPointer.h>

#include <vtkActor.h>
#include <vtkPolyDataMapper.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkXMLPolyDataReader.h>

int main (int argc, char *argv[])
{
  if (argc < 2)
  {
    std::cerr << "Usage: " << argv[0]
              << " Filename(.vtp)"
              << std::endl;
    return (EXIT_FAILURE);
  }

  vtkSmartPointer<vtkXMLPolyDataReader> reader =
    vtkSmartPointer<vtkXMLPolyDataReader>::New();
  reader->SetFileName(argv[1]);

  // Create a mapper
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(reader->GetOutputPort());

  // Create an actor
  vtkSmartPointer<vtkActor> actor =
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);

  // A renderer and render window
  vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);

  // An interactor
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);

  // Add the actors to the scene
  renderer->AddActor(actor);
  renderer->SetBackground(.3, .4, .5);

  // Render an image (lights and cameras are created automatically)
  renderWindow->Render();

  // Begin mouse interaction
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(VisualizeVTP)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(VisualizeVTP MACOSX_BUNDLE VisualizeVTP.cxx )

target_link_libraries(VisualizeVTP ${VTK_LIBRARIES})

Download and Build VisualizeVTP

Click here to download VisualizeVTP and its CMakeLists.txt file. Once the tarball VisualizeVTP.tar has been downloaded and extracted,

cd VisualizeVTP/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:

./VisualizeVTP

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.