#include <iostream>
#include <random>
#include "DGtalCatch.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/shapes/parametric/Lemniscate2D.h"

Typedefs
typedef Z2i::Space	Space

typedef Z2i::Point	Point

typedef Z2i::RealPoint	RealPoint

typedef Lemniscate2D< Space >	Shape

Functions
double	notNullValue (std::uniform_real_distribution< double > &unif, std::default_random_engine &re)

RealPoint	notNullRealPoint (std::uniform_real_distribution< double > &unif, std::default_random_engine &re)

	TEST_CASE ("Lemniscate2D")

Detailed Description

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Author: Adrien Krähenbühl (krahe.nosp@m.nbuh.nosp@m.l@uni.nosp@m.stra.nosp@m..fr ) Laboratoire ICube, UMR 7357, Université de Strasbourg, France

Date: 2019/07/18

Functions for testing the methods of the Lemniscate2D shape. In particular, test the x(), xp() and xpp() methods for cases leadind to a division by 0.

This file is part of the DGtal library.

Definition in file testLemniscate2D.cpp.

Typedef Documentation

◆ Point

typedef Z2i::Point Point

Definition at line 45 of file testLemniscate2D.cpp.

◆ RealPoint

typedef Z2i::RealPoint RealPoint

Definition at line 46 of file testLemniscate2D.cpp.

◆ Shape

typedef Lemniscate2D<Space> Shape

Definition at line 48 of file testLemniscate2D.cpp.

◆ Space

typedef Z2i::Space Space

Definition at line 44 of file testLemniscate2D.cpp.

Function Documentation

◆ notNullRealPoint()

RealPoint notNullRealPoint	(	std::uniform_real_distribution< double > &	unif,
		std::default_random_engine &	re
	)

Definition at line 62 of file testLemniscate2D.cpp.

{
  return RealPoint(notNullValue(unif,re),notNullValue(unif,re));
}

References notNullValue(), re, and unif().

◆ notNullValue()

double notNullValue	(	std::uniform_real_distribution< double > &	unif,
		std::default_random_engine &	re
	)

Definition at line 50 of file testLemniscate2D.cpp.

{
  double res;
  do {
    res = unif(re);
  }
  while ( res == Approx(0.) );
  return res;
}

References re, and unif().

Referenced by notNullRealPoint().

◆ TEST_CASE()

TEST_CASE ( "Lemniscate2D" )

Definition at line 69 of file testLemniscate2D.cpp.

{
  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) );
    }
}

References DGtal::Astroid2D< TSpace >::center(), DGtal::Astroid2D< TSpace >::getLowerBound(), DGtal::Astroid2D< TSpace >::getUpperBound(), re, REQUIRE(), SECTION(), unif(), DGtal::Astroid2D< TSpace >::x(), and DGtal::Astroid2D< TSpace >::xp().

Typedefs

Functions