io/display3DToOFF.cpp

Example of OFF generation from a Display3D object.

See also:

Export 3D mesh in OFF and OBJ format

Visualisation of the Display3D mesh export using MeshLab software ( http://meshlab.sourceforge.net).

#include <iostream>
#include "DGtal/base/Common.h"
#include "DGtal/io/readers/VolReader.h"
#include "DGtal/io/Display3D.h"

#include "DGtal/io/DrawWithDisplay3DModifier.h"
#include "DGtal/images/ImageSelector.h"
#include "DGtal/images/imagesSetsUtils/SetFromImage.h"
#include "DGtal/helpers/StdDefs.h"
#include "ConfigExamples.h"


using namespace std;
using namespace DGtal;


int main( int /*argc*/, char** /*argv*/ )
{
  std::string inputFilename = examplesPath + "samples/Al.100.vol"; 
  Display3D viewer;
  typedef ImageSelector < Z3i::Domain, int>::Type Image;
  Image image = VolReader<Image>::importVol(inputFilename);
  Z3i::DigitalSet set3d (image.domain());
  SetFromImage<Z3i::DigitalSet>::append<Image>(set3d, image, 0,255);

  viewer << set3d ;  
  viewer >> "exportMeshToOFF.off";
  // Alternatively the viewer can be exported also towards an output stream but exclusively in OFF format:
  // ofstream out;
  // out.open( "exportMeshToOFF.off");
  // viewer>> out;
  // out.close();
  
  return 0;
}