testLemniscate2D.cpp

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#include <iostream>
#include <random>
#include "DGtalCatch.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/shapes/parametric/Lemniscate2D.h"
 
 
using namespace DGtal;
using namespace Z2i;
 
typedef Z2i::Space     Space;
typedef Z2i::Point     Point;
typedef Z2i::RealPoint RealPoint;
 
typedef Lemniscate2D<Space> Shape;
 
double notNullValue(
        std::uniform_real_distribution<double>& unif,
        std::default_random_engine& re )
{
  double res;
  do {
    res = unif(re);
  }
  while ( res == Approx(0.) );
  return res;
}
 
RealPoint notNullRealPoint( 
        std::uniform_real_distribution<double>& unif,
        std::default_random_engine& re )
{
  return RealPoint(notNullValue(unif,re),notNullValue(unif,re));
}
 
TEST_CASE("Lemniscate2D")
{
  std::uniform_real_distribution<double> unif(-10000,10000);
  std::default_random_engine re;
 
  SECTION("center()")
    {
      const RealPoint center(unif(re),unif(re));
      Shape shape( center, unif(re) );
      REQUIRE( shape.center() == center );
    }
  
  SECTION("Lower and upper bounds")
    {
      Shape shape( unif(re), unif(re), unif(re) );
      REQUIRE( shape.getLowerBound() <= shape.getUpperBound() );
    }
 
  SECTION("x() with Pi parameter.")
    {
          Shape shape( unif(re), unif(re), unif(re) );
      REQUIRE_NOTHROW( shape.x(M_PI) );
    }
 
  SECTION("x() with Pi parameter -> division by 0.")
    {
          Shape shape( unif(re), unif(re), unif(re) );
      REQUIRE_NOTHROW( shape.x(M_PI) );
    }
 
  SECTION("xp() with Pi parameter -> division by 0.")
    {
          Shape shape( unif(re), unif(re), unif(re) );
      REQUIRE_NOTHROW( shape.xp(M_PI) );
    }
 
  SECTION("xpp() with Pi parameter -> division by 0.")
    {
          Shape shape( unif(re), unif(re), unif(re) );
      REQUIRE_NOTHROW( shape.xp(M_PI) );
    }
}