CylinderRenderingProperties

VTKExamples/Cxx/Rendering/CylinderRenderingProperties


This example creates a minimal visualization program, demonstrating VTK's basic rendering and pipeline creation.

Seealso

Java and Python versions of this example.

Note

This original source code for this example is here.

Code

CylinderRenderingProperties.cxx

#include <vtkCylinderSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkProperty.h>
#include <vtkCamera.h>
#include <vtkSmartPointer.h>

int main(int, char *[])
{
  // This creates a polygonal cylinder model with eight circumferential facets
  // (i.e, in practice an octagonal prism).
  vtkSmartPointer<vtkCylinderSource> cylinder =
    vtkSmartPointer<vtkCylinderSource>::New();
  cylinder->SetResolution(8);

  // The mapper is responsible for pushing the geometry into the graphics library.
  // It may also do color mapping, if scalars or other attributes are defined.
  vtkSmartPointer<vtkPolyDataMapper> cylinderMapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
  cylinderMapper->SetInputConnection(cylinder->GetOutputPort());

  // The actor is a grouping mechanism: besides the geometry (mapper), it
  // also has a property, transformation matrix, and/or texture map.
  // Here we set its color and rotate it around the X and Y axes.
  vtkSmartPointer<vtkActor> cylinderActor =
    vtkSmartPointer<vtkActor>::New();
  cylinderActor->SetMapper(cylinderMapper);
  cylinderActor->GetProperty()->SetColor(1.0000, 0.3882, 0.2784);
  cylinderActor->RotateX(30.0);
  cylinderActor->RotateY(-45.0);

  // The renderer generates the image
  // which is then displayed on the render window.
  // It can be thought of as a scene to which the actor is added
  vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
  renderer->AddActor(cylinderActor);
  renderer->SetBackground(0.1, 0.2, 0.4);
  // Zoom in a little by accessing the camera and invoking its "Zoom" method.
  renderer->ResetCamera();
  renderer->GetActiveCamera()->Zoom(1.5);

  // The render window is the actual GUI window
  // that appears on the computer screen
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->SetSize(200, 200);
  renderWindow->AddRenderer(renderer);

  // The render window interactor captures mouse events
  // and will perform appropriate camera or actor manipulation
  // depending on the nature of the events.
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);

  // This starts the event loop and as a side effect causes an initial render.
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(CylinderRenderingProperties)

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

add_executable(CylinderRenderingProperties MACOSX_BUNDLE CylinderRenderingProperties.cxx )

target_link_libraries(CylinderRenderingProperties ${VTK_LIBRARIES})

Download and Build CylinderRenderingProperties

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

cd CylinderRenderingProperties/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:

./CylinderRenderingProperties

WINDOWS USERS

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