testShortcuts.cpp

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#include <iostream>
#include "DGtal/base/Common.h"
#include "DGtal/helpers/Shortcuts.h"
#include "DGtalCatch.h"
 
using namespace std;
using namespace DGtal;
 
 
// Functions for testing class Shortcuts.
 
SCENARIO( "Shortcuts< K3 > pointel ordering", "[shortcuts][pointel]" )
{
  typedef KhalimskySpaceND<3>                       KSpace;
  typedef Shortcuts< KSpace >                       SH3;
 
  auto params          = SH3::defaultParameters();
  const double h       = 0.25;
  params( "polynomial", "goursat" )( "gridstep", h );
  auto implicit_shape  = SH3::makeImplicitShape3D  ( params );
  auto digitized_shape = SH3::makeDigitizedImplicitShape3D( implicit_shape, params );
  auto binary_image    = SH3::makeBinaryImage      ( digitized_shape, params );
  auto K               = SH3::getKSpace( params );
  auto embedder        = SH3::getCellEmbedder( K );
  auto surface         = SH3::makeLightDigitalSurface( binary_image, K, params );
  
  GIVEN( "A digital surface, its associated polygonal surface, and its pointel range" ) {
    SH3::Cell2Index c2i;
    auto polySurf        = SH3::makePrimalPolygonalSurface( c2i, surface );
    auto pointels        = SH3::getPointelRange( surface );
    THEN( "The polygonal surface and the pointel range have the same number of pointels" ) {
      REQUIRE( pointels.size() == polySurf->nbVertices() );
    }
    THEN( "The vertices of the polygonal surface are in the same order as the pointel range" ) {
      unsigned int nb_ok = 0, nb_ko = 0;
      for ( auto i = 0; i < polySurf->nbVertices(); i++ )
        {
          auto    p = pointels[ i ];
          auto  idx = c2i[ p ];
          if ( i != idx )
            {
              DGtal::trace.error() << "Pointel " << p << " of primal polygonal surface has not the same index in the polygonal surface (" << idx << ") and in the pointel range (" << i << ")." << std::endl;
              nb_ko += 1;
            }
          else nb_ok += 1;
        }
      REQUIRE( nb_ko == 0 );
    }
  }
}
 
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