Cylinder

Repository source: Cylinder

Description¶

vtkCylinderSource object creates a polygonal cylinder centered at Center.

The axis of the cylinder is aligned along the global y-axis. The height and radius of the cylinder can be specified, as well as the number of sides.

It is also possible to control whether the cylinder is open-ended or capped. If you have the end points of the cylinder, you should use a vtkLineSource followed by a vtkTubeFilter instead of the vtkCylinderSource.

Other languages

See (Python), (CSharp)

Question

If you have a question about this example, please use the VTK Discourse Forum

Code¶

Cylinder.cxx

#include <vtkActor.h>
#include <vtkCylinderSource.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

int main(int, char*[])
{
  vtkNew<vtkNamedColors> colors;

  // Create a cylinder.
  vtkNew<vtkCylinderSource> cylinderSource;
  cylinderSource->SetCenter(0.0, 0.0, 0.0);
  cylinderSource->SetRadius(5.0);
  cylinderSource->SetHeight(7.0);
  cylinderSource->SetResolution(100);

  // Create a mapper and actor.
  vtkNew<vtkPolyDataMapper> mapper;
  mapper->SetInputConnection(cylinderSource->GetOutputPort());
  vtkNew<vtkActor> actor;
  actor->GetProperty()->SetColor(colors->GetColor3d("Cornsilk").GetData());
  actor->SetMapper(mapper);

  // Create a renderer, render window, and interactor.
  vtkNew<vtkRenderer> renderer;
  vtkNew<vtkRenderWindow> renderWindow;
  renderWindow->SetWindowName("Cylinder");
  renderWindow->AddRenderer(renderer);
  vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
  renderWindowInteractor->SetRenderWindow(renderWindow);

  // Add the actor to the scene.
  renderer->AddActor(actor);
  renderer->SetBackground(colors->GetColor3d("DarkGreen").GetData());

  // Render and interact.
  renderWindow->Render();
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt¶

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(Cylinder)

find_package(VTK COMPONENTS 
  CommonColor
  CommonCore
  FiltersSources
  InteractionStyle
  RenderingContextOpenGL2
  RenderingCore
  RenderingFreeType
  RenderingGL2PSOpenGL2
  RenderingOpenGL2
)

if (NOT VTK_FOUND)
  message(FATAL_ERROR "Cylinder: Unable to find the VTK build folder.")
endif()

# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
add_executable(Cylinder MACOSX_BUNDLE Cylinder.cxx )
  target_link_libraries(Cylinder PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
  TARGETS Cylinder
  MODULES ${VTK_LIBRARIES}
)

Download and Build Cylinder¶

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

cd Cylinder/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:

./Cylinder

WINDOWS USERS

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