PolyDataRIB

VTKExamples/Cxx/RenderMan/PolyDataRIB


Description

To see the RenderMan results for this example, download and install the non-commercial version of RenderMan.

Code

PolyDataRIB.cxx

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

#include <vtkRIBExporter.h>
#include <vtkRIBProperty.h>

#include <vtksys/SystemTools.hxx>

// static vtkSmartPointer<vtkRIBProperty> spatter(const char *sizes,
//                                                const char *specksize,
//                                                const char *spattercolor,
//                                                const char *basecolor);
static vtkSmartPointer<vtkRIBProperty> rmarble(const char *veining);

int main ( int argc, char *argv[] )
{
  // Parse command line arguments
  if(argc < 2)
  {
    std::cerr << "Usage: " << argv[0]
              << " Filename(.vtp) [freqency]" << std::endl;
    return EXIT_FAILURE;
  }
  const char *freq = "1";
  if (argc > 2)
  {
    freq = argv[2];
  }

  std::string filename = argv[1];
  std::string prefix = vtksys::SystemTools::GetFilenameWithoutExtension(filename);

  // Read all the data from the file
  vtkSmartPointer<vtkXMLPolyDataReader> reader =
    vtkSmartPointer<vtkXMLPolyDataReader>::New();
  reader->SetFileName(filename.c_str());
  reader->Update();

  vtkSmartPointer<vtkPolyDataNormals> normals =
    vtkSmartPointer<vtkPolyDataNormals>::New();
  normals->SetInputConnection(reader->GetOutputPort());

  // Visualize
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(normals->GetOutputPort());

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

  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);
  renderer->SetBackground(.1, .3, .5); // Background color green

  renderWindow->Render();
  renderWindowInteractor->Start();

  prefix = prefix + "_" + freq;
  vtkSmartPointer<vtkRIBExporter> aRib =
    vtkSmartPointer<vtkRIBExporter>::New();
  aRib->BackgroundOn();
  aRib->SetInput(renderWindow);
  aRib->SetFilePrefix(prefix.c_str());
  aRib->Write();
  std::cout << "Exported RIB file is: " << prefix << ".rib" << std::endl;
  if (getenv("RMANTREE") == NULL)
  {
    std::cout << "To render the generated rib file, set the environment variable RMANTREE to the base of your RenderMan install" << std::endl;
  }
  else
  {
    std::string rmantree = getenv("RMANTREE");
    std::cout << "To create a tif file run: " << std::endl;
    std::cout << rmantree << "bin/prman " << prefix << ".rib " << std::endl;
  }
  return EXIT_SUCCESS;
}

// vtkSmartPointer<vtkRIBProperty> spatter(const char *sizes,
//                                         const char *specksize,
//                                         const char *spattercolor,
//                                         const char *basecolor)
// {
//   vtkSmartPointer<vtkRIBProperty> spatterProp =
//     vtkSmartPointer<vtkRIBProperty>::New ();
//   spatterProp->SetVariable("sizes", "float");
//   spatterProp->AddVariable("specksize", "float");
//   spatterProp->AddVariable("spattercolor", "color");
//   spatterProp->AddVariable("basecolor", "color");

//   spatterProp->SetSurfaceShaderParameter("sizes", sizes);
//   spatterProp->AddSurfaceShaderParameter("specksize", specksize);
//   spatterProp->AddSurfaceShaderParameter("spattercolor", spattercolor);
//   spatterProp->AddSurfaceShaderParameter("basecolor", basecolor);
//   spatterProp->SetSurfaceShader("spatter");

//   return spatterProp;
// }

vtkSmartPointer<vtkRIBProperty> rmarble(const char *veining)
{
  vtkSmartPointer<vtkRIBProperty> rmarbleProp =
    vtkSmartPointer<vtkRIBProperty>::New ();
  rmarbleProp->SetVariable("veining", "float");
  rmarbleProp->SetSurfaceShaderParameter("veining", veining);
  rmarbleProp->SetSurfaceShader("rmarble");

  return rmarbleProp;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(PolyDataRIB)

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

add_executable(PolyDataRIB MACOSX_BUNDLE PolyDataRIB.cxx )

target_link_libraries(PolyDataRIB ${VTK_LIBRARIES})

Download and Build PolyDataRIB

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

cd PolyDataRIB/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:

./PolyDataRIB

WINDOWS USERS

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