testChordGenericStandardPlaneComputer.cpp

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#include <cstdlib>
#include <iostream>
#include <random>
#include <algorithm>
#include "DGtal/base/Common.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/kernel/CPointPredicate.h"
#include "DGtal/geometry/surfaces/CAdditivePrimitiveComputer.h"
#include "DGtal/geometry/surfaces/ChordGenericStandardPlaneComputer.h"
 
using namespace std;
using namespace DGtal;
 
// Functions for testing class ChordGenericStandardPlaneComputer.
 
// Standard services - public :
template <typename Integer>
Integer getRandomInteger( const Integer & first, const Integer & after_last )
{
  Integer r = (Integer) rand();
  return ( r % (after_last - first) ) + first;
}
 
template <typename Domain>
std::vector<typename Domain::Point> pointsInStandardPlane
( const Domain & domain,
  typename Domain::Integer a,
  typename Domain::Integer b,
  typename Domain::Integer c,
  typename Domain::Integer mu )
{
  typedef typename Domain::Integer Integer;
  typedef typename Domain::Point Point;
  typedef typename Domain::ConstIterator ConstIterator;
  std::vector<Point> pts;
  Integer mup = mu + abs(a) + abs(b) + abs(c);
  for ( ConstIterator it = domain.begin(), itE = domain.end();
        it != itE; ++it )
    {
      Point p = *it;
      Integer r = a * p[ 0 ] + b * p[ 1 ] + c * p[ 2 ];
      if ( ( mu <= r ) && ( r < mup ) )
        pts.push_back( p );
    }
  return pts;
}
 
template <typename PlaneComputer >
bool checkChordGenericStandardPlaneComputer
( PlaneComputer & computer, unsigned int nbplanes, int diameter )
{
  typedef typename PlaneComputer::Space Space;
  typedef HyperRectDomain<Space> Domain;
  typedef typename Space::Integer Integer;
  typedef typename Space::Point Point;
  unsigned int nb = 0;
  unsigned int nbok = 0;
  Domain domain( Point( -diameter, -diameter, -diameter ),
                 Point(  diameter,  diameter,  diameter ) );
  Integer a, b, c, mu;
  std::random_device rd;
  std::mt19937 g(rd());
  
  for ( unsigned int p = 0; p < nbplanes; ++p )
    {
      do {
        a = getRandomInteger( -diameter, diameter+1 );
        b = getRandomInteger( -diameter, diameter+1 );
        c = getRandomInteger( -diameter, diameter+1 );
      }
      while ( ( a == 0 ) && ( b == 0 ) && ( c == 0 ) );
      mu = getRandomInteger( -diameter, diameter );
      std::vector<Point> pts = pointsInStandardPlane( domain, a, b, c, mu );
      computer.init( 1, 1 );
      ++nb;
      nbok += computer.extend( pts.begin(), pts.end() ) ? 1 : 0;
      trace.info() << "Primitive=" << computer.primitive() << std::endl;
      trace.info() << "(" << nbok << "/" << nb << ") extend "
                   << pts.size() << " points of plane "
                   << mu << " <= " << a << "*x+" << b << "*y+" << c << "*z+"
                   << " < " << (mu+a+b+c) << std::endl;
      computer.init( 1, 1 );
      std::shuffle( pts.begin(), pts.end(), g );
      ++nb;
      nbok += computer.extend( pts.begin(), pts.end() ) ? 1 : 0;
      trace.info() << "Primitive=" << computer.primitive() << std::endl;
      trace.info() << "(" << nbok << "/" << nb << ") extend "
                   << pts.size() << " shuffled points of plane "
                   << mu << " <= " << a << "*x+" << b << "*y+" << c << "*z+"
                   << " < " << (mu+a+b+c) << std::endl;
    }
  return nb == nbok;
}
 
 
int main( int /*argc*/, char** /*argv*/ )
{
  using namespace Z3i;
 
  typedef ChordGenericStandardPlaneComputer<Space, Point, DGtal::int64_t>
    PlaneComputer;
 
  bool ok;
  PlaneComputer plane;
  plane.init( 1, 1 );
  ok = plane.extend( Point(0,0,0) );
  trace.info() << "Point(0,0,0) is " << ( ok ? "ok" : "ko" ) << std::endl;
  trace.info() << plane << std::endl;
  ok = plane.extend( Point(1,0,0) );
  trace.info() << "Point(1,0,0) is " << ( ok ? "ok" : "ko" ) << std::endl;
  trace.info() << plane << std::endl;
  ok = plane.extend( Point(0,1,0) );
  trace.info() << "Point(0,1,0) is " << ( ok ? "ok" : "ko" ) << std::endl;
  trace.info() << plane << std::endl;
  ok = plane.extend( Point(1,1,0) );
  trace.info() << "Point(1,1,0) is " << ( ok ? "ok" : "ko" ) << std::endl;
  trace.info() << plane << std::endl;
  ok = plane.extend( Point(2,0,0) );
  trace.info() << "Point(2,0,0) is " << ( ok ? "ok" : "ko" ) << std::endl;
  trace.info() << plane << std::endl;
  ok = plane.extend( Point(0,2,0) );
  trace.info() << "Point(0,2,0) is " << ( ok ? "ok" : "ko" ) << std::endl;
  trace.info() << plane << std::endl;
  ok = plane.extend( Point(0,2,0) );
  trace.info() << "Point(0,2,0) is " << ( ok ? "ok" : "ko" ) << std::endl;
  trace.info() << plane << std::endl;
  ok = plane.extend( Point(1,1,1) );
  trace.info() << "Point(1,1,1) is " << ( ok ? "ok" : "ko" ) << std::endl;
  trace.info() << plane << std::endl;
  checkChordGenericStandardPlaneComputer( plane, 5, 20 );
 
  return 0;
}