testBall3D.cpp

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#include "DGtal/shapes/parametric/Ball3D.h"
#include "DGtal/helpers/StdDefs.h"
#include <iostream>
#include "DGtal/shapes/GaussDigitizer.h"
#include "DGtal/io/Color.h"
#include "DGtal/topology/SurfelAdjacency.h"
#include "DGtal/topology/DigitalSurface.h"
#include "DGtal/topology/helpers/BoundaryPredicate.h"
#include "DGtal/topology/SetOfSurfels.h"
#include "DGtal/io/colormaps/GradientColorMap.h"
#include "DGtal/topology/SCellsFunctors.h"
#include "DGtal/io/viewers/Viewer3D.h"

 using namespace std;
 using namespace DGtal;
 using namespace Z3i;

// Standard services - public :


 int main(int argc, char** argv)
 {



   // -------------------------------------------------------------------------- Type declaring
   typedef Space::RealPoint RealPoint;
   typedef Ball3D<Space> EuclideanShape;
   typedef GaussDigitizer<Space,EuclideanShape> DigitalShape;


   // -------------------------------------------------------------------------- Creating the shape
    RealPoint c1(0, 0, 0 );
    EuclideanShape ball1( c1, 12.2 );

   // -------------------------------------------------------------------------- GaussDigitizing
    DigitalShape dshape;
    dshape.attach( ball1 );
    RealPoint p1 =RealPoint( -15.0, -15.0, -15.0 );
    RealPoint p2 =RealPoint( 15.0, 15.0, 15.0 );
    dshape.init( RealPoint( p1 ), RealPoint( p2 ), 1.0);
    Domain domain = dshape.getDomain();


   // -------------------------------------------------------------------------- Khalimskhy
    KSpace K;
    bool space_ok = K.init( domain.lowerBound(), domain.upperBound(), true );
    if (!space_ok)
    {
      return 2;
    }


    // -------------------------------------------------------------------------- Other types
    typedef SurfelAdjacency<KSpace::dimension> MySurfelAdjacency;
    typedef KSpace::Surfel Surfel;
    typedef KSpace::SurfelSet SurfelSet;
    typedef SetOfSurfels< KSpace, SurfelSet > MySetOfSurfels;


    // -------------------------------------------------------------------------- Tracking the boudnadry
    MySurfelAdjacency surfAdj( true ); // interior in all directions.
    MySetOfSurfels theSetOfSurfels( K, surfAdj );
    Surfel bel = Surfaces<KSpace>::findABel( K, dshape, 1000 );
    Surfaces<KSpace>::trackBoundary( theSetOfSurfels.surfelSet(), K, surfAdj, dshape, bel );



    QApplication application(argc,argv);
    Viewer3D<> viewer;
    viewer.show();
    viewer << SetMode3D( domain.className(), "BoundingBox" ) << domain;





//-----------------------------------------------------------------------
// Looking for the min and max values

  double minCurv=1;
  double maxCurv=0;
  CanonicSCellEmbedder<KSpace> midpoint(K);
  for ( std::set<SCell>::iterator it = theSetOfSurfels.begin(), it_end = theSetOfSurfels.end();
  it != it_end; ++it)
  {

    RealPoint A = midpoint( *it );
    DGtal::StarShaped3D<Space>::AngularCoordinates Angles= ball1.parameter(A);
    double a =ball1.meanCurvature(Angles);
//    double a =ball1.gaussianCurvature(Angles);

    if(a>maxCurv)
    {
  maxCurv=a;
    }
    if(a<minCurv)
    {
  minCurv=a;
    }
  }

//-----------------------------------------------------------------------
//Specifing a color map

  GradientColorMap<double> cmap_grad( minCurv, maxCurv+1         );
  cmap_grad.addColor( Color( 50, 50, 255 ) );
  cmap_grad.addColor( Color( 255, 0, 0 ) );
  cmap_grad.addColor( Color( 255, 255, 10 ) );


//-----------------------------------------------------------------------
//Drawing the ball && giving a color to the surfels( depending on the
//curvature)

  unsigned int nbSurfels = 0;


  for ( std::set<SCell>::iterator it = theSetOfSurfels.begin(), it_end = theSetOfSurfels.end();
it != it_end; ++it, ++nbSurfels )
  {
    RealPoint A = midpoint( *it );

    DGtal::StarShaped3D<Space>::AngularCoordinates Angles= ball1.parameter(A);
    double curvature =ball1.meanCurvature(Angles);
//    double curvature =ball1.gaussianCurvature(Angles);
    viewer << CustomColors3D( Color::Black, cmap_grad( curvature));
    viewer << *it;
  }



  viewer << Viewer3D<>::updateDisplay;

  return application.exec();
}
// //