DGtal  1.4.beta
testAstroid2D.cpp File Reference
#include <iostream>
#include <random>
#include "DGtalCatch.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/shapes/parametric/Astroid2D.h"
Include dependency graph for testAstroid2D.cpp:

Go to the source code of this file.

Typedefs

typedef Astroid2D< SpaceShape
 

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 ("Astroid2D")
 

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 Astroid2D shape. In particular, test the parameter() method for cas leadind to a division by 0.

This file is part of the DGtal library.

Definition in file testAstroid2D.cpp.

Typedef Documentation

◆ Shape

Function Documentation

◆ notNullRealPoint()

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

Definition at line 59 of file testAstroid2D.cpp.

62 {
63  return RealPoint(notNullValue(unif,re),notNullValue(unif,re));
64 }
double notNullValue(std::uniform_real_distribution< double > &unif, std::default_random_engine &re)
PointVector< 3, double > RealPoint

References notNullValue().

Referenced by TEST_CASE().

◆ notNullValue()

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

Definition at line 47 of file testAstroid2D.cpp.

50 {
51  double res;
52  do {
53  res = unif(re);
54  }
55  while ( res == Approx(0.) );
56  return res;
57 }

Referenced by notNullRealPoint(), and TEST_CASE().

◆ TEST_CASE()

TEST_CASE ( "Astroid2D"  )

Definition at line 66 of file testAstroid2D.cpp.

67 {
68  std::uniform_real_distribution<double> unif(-10000,10000);
69  std::default_random_engine re;
70 
71  SECTION("center()")
72  {
73  const RealPoint center(unif(re),unif(re));
74  Shape shape( center, unif(re), unif(re) );
75  REQUIRE( shape.center() == center );
76  }
77 
78  SECTION("Lower and upper bounds")
79  {
80  Shape shape( unif(re), unif(re), unif(re), unif(re) );
81  REQUIRE( shape.getLowerBound() <= shape.getUpperBound() );
82  }
83 
84  SECTION("parameter() with null x-radius -> division by 0.")
85  {
86  Shape shape( unif(re), unif(re), 0., notNullValue(unif,re) );
87  REQUIRE_NOTHROW( shape.parameter(notNullRealPoint(unif,re)) );
88  }
89 
90  SECTION("parameter() with null y-radius -> division by 0.")
91  {
92  Shape shape( unif(re), unif(re), notNullValue(unif,re), 0. );
93  REQUIRE_NOTHROW( shape.parameter(notNullRealPoint(unif,re)) );
94  }
95 
96  SECTION("parameter() with null x-radius and y-radius -> undefined behaviour.")
97  {
98  Shape shape( unif(re), unif(re), 0., 0. );
99  REQUIRE_NOTHROW( shape.parameter(notNullRealPoint(unif,re)) );
100  }
101 
102  SECTION("parameter() where (x,y) parameter with x == center -> pi/2 or 3*pi/2")
103  {
104  const double centerX = unif(re);
105  Shape shape( centerX, unif(re), unif(re), unif(re) );
106  const RealPoint point( centerX, unif(re) );
107  REQUIRE_NOTHROW( shape.parameter(point) );
108  double res = shape.parameter(point);
109  REQUIRE_THAT( res, Catch::WithinAbs(M_PI_2,DBL_EPSILON) || Catch::WithinAbs(3*M_PI_2,DBL_EPSILON) );
110  }
111 
112  SECTION("parameter() with point parameter with null y -> 0. or pi")
113  {
114  const double centerY = unif(re);
115  Shape shape( unif(re), centerY, unif(re), unif(re) );
116  const RealPoint point( unif(re), centerY );
117  REQUIRE_NOTHROW( shape.parameter(point) );
118  double res = shape.parameter(point);
119  REQUIRE_THAT( res, Catch::WithinAbs(0.,DBL_EPSILON) || Catch::WithinAbs(M_PI,DBL_EPSILON) );
120  }
121 }
Aim: Implements basic operations that will be used in Point and Vector classes.
Definition: PointVector.h:593
Point center(const std::vector< Point > &points)
RealPoint notNullRealPoint(std::uniform_real_distribution< double > &unif, std::default_random_engine &re)
SECTION("Testing constant forward iterators")
REQUIRE(domain.isInside(aPoint))

References DGtal::Astroid2D< TSpace >::center(), DGtal::Astroid2D< TSpace >::getLowerBound(), DGtal::Astroid2D< TSpace >::getUpperBound(), notNullRealPoint(), notNullValue(), DGtal::Astroid2D< TSpace >::parameter(), REQUIRE(), and SECTION().