OpenVRCube

VTKExamples/Cxx/GeometricObjects/OpenVRCube


Description

This example demonstrates rendering of a Cuber in OpenVR.

Code

OpenVRCube.cxx

#include <vtkSmartPointer.h>
#include <vtkActor.h>
#include <vtkCubeSource.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkOpenVRRenderWindow.h>
#include <vtkOpenVRRenderWindowInteractor.h>
#include <vtkOpenVRRenderer.h>
#include <vtkNamedColors.h>

int main(int, char *[])
{
  // Create a cube.
  vtkSmartPointer<vtkCubeSource> cubeSource =
    vtkSmartPointer<vtkCubeSource>::New();

  // Create a mapper and actor.
  vtkSmartPointer<vtkNamedColors> colors =
    vtkSmartPointer<vtkNamedColors>::New();
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(cubeSource->GetOutputPort());

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

  // Create a renderer, render window, and interactor
  vtkSmartPointer<vtkOpenVRRenderer> renderer =
    vtkSmartPointer<vtkOpenVRRenderer>::New();
  vtkSmartPointer<vtkOpenVRRenderWindow> renderWindow =
    vtkSmartPointer<vtkOpenVRRenderWindow>::New();
  renderWindow->AddRenderer(renderer);
  vtkSmartPointer<vtkOpenVRRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkOpenVRRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);

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

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

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(OpenVRCube)

find_package(VTK COMPONENTS 
  vtkCommonColor
  vtkCommonCore
  vtkCommonDataModel
  vtkFiltersSources
  vtkInteractionStyle
  vtkRenderingCore
  vtkRenderingFreeType
  vtkRenderingOpenGL2
  vtkRenderingOpenVR QUIET)
if (NOT VTK_FOUND)
  message("Skipping OpenVRCube: ${VTK_NOT_FOUND_MESSAGE}")
  return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
  # old system
  include(${VTK_USE_FILE})
  add_executable(OpenVRCube MACOSX_BUNDLE OpenVRCube.cxx )
  target_link_libraries(OpenVRCube PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(OpenVRCube MACOSX_BUNDLE OpenVRCube.cxx )
  target_link_libraries(OpenVRCube PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS OpenVRCube
    MODULES ${VTK_LIBRARIES}
    )
endif () 

Download and Build OpenVRCube

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

cd OpenVRCube/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:

./OpenVRCube

WINDOWS USERS

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