testArithmeticalDSSConvexHull.cpp File Reference

#include <iostream>
#include "DGtal/base/Common.h"
#include "DGtal/geometry/curves/ArithmeticalDSL.h"
#include "DGtal/geometry/curves/ArithmeticalDSSConvexHull.h"
#include "DGtal/geometry/curves/ArithmeticalDSS.h"
#include "DGtal/kernel/SpaceND.h"
#include "DGtal/kernel/NumberTraits.h"
#include "DGtal/arithmetic/LatticePolytope2D.h"

Go to the source code of this file.

Functions
template<typename DSL >
bool	basicTest (const DSL &aDSL)
template<typename DSL >
bool	basicTest (typename DSL::Coordinate a, typename DSL::Coordinate b)
bool	testWithoutLengthConstraint ()
template<typename DSL >
bool	comparisonLeftHull (typename DSL::Coordinate a, typename DSL::Coordinate b)
bool	testWithLengthConstraint ()
template<typename DSL >
DSL	smartCHSubsegment (const DSL &aDSL, typename DSL::Position x, typename DSL::Position y)
template<typename DSL >
DSL	trivialSubsegment (const DSL &aDSL, typename DSL::Position x, typename DSL::Position y)
template<typename DSL >
bool	comparisonSubsegment (const DSL &aDSL, typename DSL::Position x, typename DSL::Position y)
template<typename DSL >
bool	comparisonSubsegment (typename DSL::Coordinate a, typename DSL::Coordinate b)
bool	testSubsegment ()
template<typename DSL >
bool	basicTest2 (const DSL &aDSL)
template<typename DSL >
bool	basicTest2 (typename DSL::Coordinate a, typename DSL::Coordinate b)
bool	testWithoutLengthConstraint2 ()
template<typename DSS >
DSS::DSL	reversedSmartCHSubsegment (const DSS &aDSS, typename DSS::Position aBound)
template<typename DSS >
bool	comparisonSubsegment2 (const DSS &aDSS, typename DSS::Position aBound)
template<typename DSL >
bool	comparisonSubsegment2 (typename DSL::Coordinate a, typename DSL::Coordinate b)
bool	testSubsegment2 ()
int	main (int argc, char **argv)

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

Tristan Roussillon (trist.nosp@m.an.r.nosp@m.oussi.nosp@m.llon.nosp@m.@liri.nosp@m.s.cn.nosp@m.rs.fr ) Laboratoire d'InfoRmatique en Image et Systèmes d'information - LIRIS (CNRS, UMR 5205), CNRS, France

Date

2014/02/11

Functions for testing class ArithmeticalDSSConvexHull.

This file is part of the DGtal library.

Definition in file testArithmeticalDSSConvexHull.cpp.

Function Documentation

basicTest() [1/2]

template<typename DSL >

bool basicTest

(

const DSL &

aDSL

)

Applies smartCH on a segment starting from (0,0) and contained in a given arithmetical DSL

Parameters

aDSL

any DSL

Returns

'true' if the algorithm returns correct values, 'false' otherwise

Template Parameters

DSL	an arithmeticalDSS type (either naive or standard)

Definition at line 61 of file testArithmeticalDSSConvexHull.cpp.

{ 
  typedef typename DSL::Point Point; 
  typedef typename DSL::Vector Vector; 
  typedef typename DSL::Integer Integer; 
  typedef typename DSL::Position Position; 
  
  unsigned int nbok = 0;
  unsigned int nb = 0;
 
  trace.beginBlock ( "One simple test..." );
 
  trace.info() << aDSL << std::endl; 
 
  //forward test
  Position l = (2*aDSL.patternLength()); 
  std::vector<Point> lch, uch; 
  Vector v = smartCH( aDSL, Point(0,0), l,
                      std::back_inserter(uch), std::back_inserter(lch) );
 
  if (v == Vector(aDSL.b(),aDSL.a())) //eq. 7
    nbok++; 
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") " << std::endl;
  if ( aDSL.remainder(lch.back()) == aDSL.mu()-1 ) //eq. 8
    nbok++; 
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") " << std::endl; //eq. 8
  if ( aDSL.remainder(uch.back()) == aDSL.mu() )
    nbok++; 
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") " << std::endl;
 
  //test on the size of the convex hulls
  double bound = NumberTraits<Integer>::castToDouble(aDSL.patternLength()); 
  unsigned int threshold = (unsigned int) std::ceil( std::log(bound) / std::log(1.618) );
  if ( (lch.size()+uch.size()-1) <= threshold )
    nbok++; 
  nb++; 
  trace.info() << "(" << nbok << "/" << nb << ") " << std::endl;
 
  trace.endBlock();
 
  return (nbok == nb);  
}

References DGtal::Trace::beginBlock(), DGtal::Trace::endBlock(), DGtal::Trace::info(), DGtal::functions::smartCH(), and DGtal::trace.

Referenced by basicTest(), main(), and testWithoutLengthConstraint().

basicTest() [2/2]

template<typename DSL >

bool basicTest	(	typename DSL::Coordinate	a,
		typename DSL::Coordinate	b
	)

Applies smartCH on a segment starting from (0,0) and contained in a naive DSL of slope a, b with various intercepts

Parameters

a	numerator of the slope
b	denominator of the slope

Returns

'true' if the tests passed, 'false' otherwise

Template Parameters

DSL	an arithmeticalDSL type (either naive or standard)

Definition at line 117 of file testArithmeticalDSSConvexHull.cpp.

{
  unsigned int nbok = 0;
  unsigned int nb = 0;
 
  DSL aDSL(a,b,0); 
  for (typename DSL::Integer mu = 0; ( (-mu < aDSL.omega())&&(nbok == nb) ); --mu)
    {
      if (basicTest(DSL(a,b,mu)))
        nbok++; 
      nb++; 
    }
 
  return (nbok == nb);    
}

References basicTest().

basicTest2() [1/2]

template<typename DSL >

bool basicTest2

(

const DSL &

aDSL

)

Applies reversedSmartCH on a segment starting from (0,0) and contained in a given arithmetical DSL

Parameters

aDSL

any DSL

Returns

'true' if the algorithm returns correct values, 'false' otherwise

Template Parameters

DSL	an arithmeticalDSL type (either naive or standard)

Definition at line 499 of file testArithmeticalDSSConvexHull.cpp.

{ 
  typedef typename DSL::Point Point; 
  typedef typename DSL::Vector Vector; 
  typedef typename DSL::Coordinate Coordinate; 
  typedef typename DSL::Integer Integer; 
  typedef typename DSL::Position Position; 
  
  unsigned int nbok = 0;
  unsigned int nb = 0;
 
  trace.beginBlock ( "One simple test..." );
 
  //bounding DSS
  typedef ArithmeticalDSS<Coordinate, Integer, DSL::foregroundAdjacency> DSS;
  Point A(0,0); 
  Position l = (2*aDSL.patternLength());
  Point B = aDSL.getPoint( aDSL.position(A) + l + 1 ); 
  DSS dss(aDSL.begin(A), aDSL.begin(B) ); 
 
  trace.info() << dss << std::endl; 
 
  //computation
  std::vector<Point> lch, uch; 
  Vector v = reversedSmartCH( dss, NumberTraits<Position>::ZERO,
                             std::back_inserter(uch), std::back_inserter(lch) );
 
  trace.info() << v << lch.back() << uch.back() << std::endl; 
 
  if ( (uch.back() == A) && (lch.back() == A - aDSL.shift()) )
    nbok++; 
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") " << std::endl; 
 
  Vector LU = lch.back() - uch.back(); 
  if ( (v[0]*LU[1] - v[1]*LU[0]) == NumberTraits<Coordinate>::ONE )
    nbok++; 
  nb++;
  trace.info() << "(" << nbok << "/" << nb << ") " << std::endl;
 
  trace.endBlock();
 
  return (nbok == nb);  
}

References DGtal::Trace::beginBlock(), DGtal::Trace::endBlock(), DGtal::Trace::info(), DGtal::functions::reversedSmartCH(), and DGtal::trace.

Referenced by basicTest2(), and testWithoutLengthConstraint2().

basicTest2() [2/2]

template<typename DSL >

bool basicTest2	(	typename DSL::Coordinate	a,
		typename DSL::Coordinate	b
	)

Applies reversedSmartCH on a segment starting from (0,0) and contained in a naive DSL of slope a, b with various intercepts

Parameters

a	numerator of the slope
b	denominator of the slope

Returns

'true' if the tests passed, 'false' otherwise

Template Parameters

DSL	an arithmeticalDSL type (either naive or standard)

Definition at line 554 of file testArithmeticalDSSConvexHull.cpp.

{
  unsigned int nbok = 0;
  unsigned int nb = 0;
 
  DSL aDSL(a,b,0); 
  for (typename DSL::Integer mu = 0; ( (-mu < aDSL.omega())&&(nbok == nb) ); --mu)
    {
      if (basicTest2(DSL(a,b,mu)))
        nbok++; 
      nb++; 
    }
 
  return (nbok == nb);    
}

References basicTest2().

comparisonLeftHull()

template<typename DSL >

bool comparisonLeftHull	(	typename DSL::Coordinate	a,
		typename DSL::Coordinate	b
	)

Compares smartCH to the algorithm of Charrier and Buzer, implemented in LatticePolytope2D.

Parameters

a	(positive) numerator of the slope
b	(positive) denominator of the slope

Precondition

b is greater than a, which is greater than 0.

Returns

'true' if the two algorithms return the same results, 'false' otherwise

Template Parameters

DSL	an arithmeticalDSL type (either naive or standard)

Definition at line 196 of file testArithmeticalDSSConvexHull.cpp.

{
  ASSERT(a >= 0); 
  ASSERT(b >= 0); 
  ASSERT(a < b); 
 
  typedef typename DSL::Point Point; 
  typedef typename DSL::Vector Vector; 
  typedef typename DSL::Coordinate Coordinate; 
 
  unsigned int nbok = 0;
  unsigned int nb = 0;
 
  trace.beginBlock ( "Comparison ..." );
  DSL inputDSL(a,b,0); 
 
  trace.info() << a << " " << b << std::endl; 
  trace.info() << "testing every mu between 0 and -" << inputDSL.omega() << std::endl; 
 
  for (typename DSL::Integer mu = 0; ( (mu-1 >= -inputDSL.omega())&&(nbok == nb) ); --mu)
    {
      trace.info() << "mu=" << mu << ", testing every length between 1 and 2*" << inputDSL.omega() << std::endl; 
      inputDSL = DSL(a,b,mu); 
 
      for (typename DSL::Position l = 1; ( (l <= 2*inputDSL.patternLength())&&(nbok == nb) ); ++l)
        {
          //trace.info() << "l=" << l << std::endl; 
 
          //smartCH
          std::vector<Point> lch, uch; 
          Vector v = smartCH( inputDSL, Point(0,0), l,
                              std::back_inserter(uch), std::back_inserter(lch) );
 
          // std::copy( lch.begin(), lch.end(), std::ostream_iterator<Point>(std::cout, " ") ); 
          // std::cout << std::endl; 
          // std::copy( uch.begin(), uch.end(), std::ostream_iterator<Point>(std::cout, " ") ); 
          // std::cout << std::endl; 
 
          Vector shift = -inputDSL.shift(); 
          //algorithm of Charrier and Buzer 
          typedef SpaceND<2, Coordinate> Space2; 
          typedef LatticePolytope2D<Space2> CIP; 
          CIP cip; 
          typename CIP::HalfSpace line( typename CIP::Vector(a,-b), mu ); 
          typename CIP::HalfSpace line2( typename CIP::Vector(a,-b), mu-1 ); 
          //NB: since only closed half-space are used, 
          // we must run the procedure twice, for mu and mu-1
          // in order to get the lower left hull (not included)
          // and the upper left hull (included)
          typename CIP::HalfSpace constraint( typename CIP::Vector(shift[1],-shift[0]), l ); 
          std::vector<typename CIP::Point> inch, outch, inch2, outch2; 
          inch.push_back( typename CIP::Point(shift[0],shift[1]) ); 
          inch2.push_back( typename CIP::Point(shift[0],shift[1]) ); 
          ASSERT( line(inch[0]) ); 
          ASSERT( constraint(inch[0]) ); 
          outch.push_back( typename CIP::Point(0,0) ); 
          outch2.push_back( typename CIP::Point(0,0) ); 
          ASSERT( (!line2(outch[0])) ); 
          ASSERT( constraint(outch[0]) ); 
          typename CIP::Vector vBezout(1,0); 
          cip.getAllPointsOfHull(inch, outch, vBezout, line, constraint); 
          cip.getAllPointsOfHull(inch2, outch2, vBezout, line2, constraint); 
 
          // std::copy( inch2.begin(), inch2.end(), std::ostream_iterator<typename CIP::Point>(std::cout, " ") ); 
          // std::cout << std::endl; 
          // std::copy( outch.begin(), outch.end(), std::ostream_iterator<typename CIP::Point>(std::cout, " ") ); 
          // std::cout << std::endl; 
 
          //comparisons
          std::unique(inch2.begin(), inch2.end()); 
          if (std::equal(lch.begin(), lch.end(), inch2.begin()))
            nbok++; 
          nb++; 
 
          std::unique(outch.begin(), outch.end()); 
          if (std::equal(uch.begin(), uch.end(), outch.begin()))
            nbok++; 
          nb++;
 
        }
    }
 
  trace.endBlock();
 
  return (nbok == nb);    
}

References DGtal::Trace::beginBlock(), DGtal::Trace::endBlock(), DGtal::Trace::info(), DGtal::functions::smartCH(), and DGtal::trace.

Referenced by testWithLengthConstraint().

comparisonSubsegment() [1/2]

template<typename DSL >

bool comparisonSubsegment	(	const DSL &	aDSL,
		typename DSL::Position	x,
		typename DSL::Position	y
	)

Compares smartCH to the classical incremental recognition algorithm for one subgement of a given DSL

Parameters

aDSL	DSL containing the subsegment
x	minimal position
y	maximal position

Returns

'true' if results match, 'false' otherwise

Template Parameters

DSL	an arithmetical DSL (either naive or standard)

Definition at line 397 of file testArithmeticalDSSConvexHull.cpp.

{
  DSL dsl1 = smartCHSubsegment(aDSL, x, y); 
  DSL dsl2 = trivialSubsegment(aDSL, x, y); 
 
  return (dsl1 == dsl2); 
}

References smartCHSubsegment(), and trivialSubsegment().

Referenced by comparisonSubsegment(), main(), and testSubsegment().

comparisonSubsegment() [2/2]

template<typename DSL >

bool comparisonSubsegment	(	typename DSL::Coordinate	a,
		typename DSL::Coordinate	b
	)

Compares smartCH to the classical incremental recognition algorithm for various intercepts and lengths

Parameters

a	numerator of the slope
b	denominator of the slope

Returns

'true' if the two algorithms return the same results, 'false' otherwise

Template Parameters

DSL	an arithmetical DSL (either naive or standard)

Definition at line 416 of file testArithmeticalDSSConvexHull.cpp.

{
  unsigned int nbok = 0;
  unsigned int nb = 0;
 
  trace.beginBlock ( "Subsegment comparison ..." );
 
  DSL aDSL(a, b, 0); 
  for (typename DSL::Integer mu = 0; ( (mu-1 >= -aDSL.omega())&&(nbok == nb) ); --mu)
    {
      //trace.info() << "mu=" << mu << std::endl; 
     
      typename DSL::Position f = -aDSL.patternLength(); 
      for (typename DSL::Position l = 1; ( (l <= 2*aDSL.patternLength())&&(nbok == nb) ); ++l)
        {
          //trace.info() << "f=" << f << " l=" << l << std::endl; 
            
          if (comparisonSubsegment(DSL(a, b, mu), f, f+l))
            nbok++;
          nb++; 
        }
      
    }
  
  trace.endBlock(); 
  
  return (nb == nbok); 
}

References DGtal::Trace::beginBlock(), comparisonSubsegment(), DGtal::Trace::endBlock(), and DGtal::trace.

comparisonSubsegment2() [1/2]

template<typename DSS >

bool comparisonSubsegment2	(	const DSS &	aDSS,
		typename DSS::Position	aBound
	)

Compares reversedSmartCH to the classical incremental recognition algorithm for one subgement of a greater DSS

Parameters

aDSS	DSS containing the subsegment
aBound	maximal position

Returns

'true' if results match, 'false' otherwise

Template Parameters

DSS	an arithmetical DSS (either naive or standard)

Definition at line 664 of file testArithmeticalDSSConvexHull.cpp.

{
  typedef typename DSS::DSL DSL; 
  DSL dsl1 = reversedSmartCHSubsegment(aDSS, aBound); 
  DSL dsl2 = trivialSubsegment(aDSS.dsl(), aDSS.position(aDSS.back()), aBound); 
 
  return (dsl1 == dsl2); 
}

References reversedSmartCHSubsegment(), and trivialSubsegment().

Referenced by comparisonSubsegment2(), and testSubsegment2().

comparisonSubsegment2() [2/2]

template<typename DSL >

bool comparisonSubsegment2	(	typename DSL::Coordinate	a,
		typename DSL::Coordinate	b
	)

Compares reversedSmartCH to the classical incremental recognition algorithm for various intercepts and lengths

Parameters

a	numerator of the slope
b	denominator of the slope

Returns

'true' if the two algorithms return the same results, 'false' otherwise

Template Parameters

DSL	an arithmetical DSL (either naive or standard)

Definition at line 685 of file testArithmeticalDSSConvexHull.cpp.

{
  unsigned int nbok = 0;
  unsigned int nb = 0;
 
  trace.beginBlock ( "Subsegment comparison ..." );
 
  DSL aDSL(a, b, 0); 
  for (typename DSL::Integer mu = 0; ( (mu-1 >= -aDSL.omega())&&(nbok == nb) ); --mu)
    {
      trace.info() << "mu=" << mu << std::endl; 
 
      //computation of a bounding DSS
      typedef typename DSL::Point Point; 
      typedef typename DSL::Coordinate Coordinate; 
      typedef typename DSL::Integer Integer; 
      typedef ArithmeticalDSS<Coordinate,Integer,DSL::foregroundAdjacency> DSS; 
 
      Point startingPoint = aDSL.getPoint(0); 
      ASSERT( aDSL(startingPoint) ); 
      Point endingPoint = aDSL.getPoint(2*aDSL.patternLength()+1); 
      ASSERT( aDSL(endingPoint) ); 
 
      DSS dss = DSS(aDSL.begin(startingPoint), aDSL.begin(endingPoint)); 
 
      //test for a left subsegment
      for (typename DSL::Position l = 1; ( (l <= 2*aDSL.patternLength())&&(nbok == nb) ); ++l)
        {
          trace.info() << "l=" << l << std::endl; 
 
          if (comparisonSubsegment2(dss, l))
            nbok++;
          nb++; 
        }
 
    }
 
  trace.endBlock(); 
 
  return (nb == nbok); 
}

References DGtal::Trace::beginBlock(), comparisonSubsegment2(), DGtal::Trace::endBlock(), DGtal::Trace::info(), and DGtal::trace.

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 773 of file testArithmeticalDSSConvexHull.cpp.

{
  trace.beginBlock ( "Testing class ArithmeticalDSSConvexHull" );
  trace.info() << "Args:";
  for ( int i = 0; i < argc; ++i )
    trace.info() << " " << argv[ i ];
  trace.info() << endl;
 
  if (argc >= 4)
    { //basic test with a specified DSL
      std::istringstream issb(argv[1]); 
      int b; 
      issb >> b; 
      std::istringstream issa(argv[2]); 
      int a; 
      issa >> a; 
      if ( (a <= 0)||(b <= 0) )
        {
          std::cerr << " a and b should be strictly positive " << std::endl; 
          return 1;
        } 
      std::istringstream issmu(argv[3]); 
      int mu; 
      issmu >> mu; 
      if ( (mu > 0)||(mu <= -(std::max(std::abs(a),std::abs(b)))) )
        {
          std::cerr << " mu should be within the range ]-max(|a|,|b|); 0] " << std::endl; 
          return 1;
        } 
 
      bool res = basicTest( NaiveDSL<DGtal::int32_t>(a,b,mu) ) 
        && comparisonSubsegment( NaiveDSL<DGtal::int32_t>(a,b,mu),0,5 );
      trace.emphase() << ( res ? "Passed." : "Error." ) << endl;
      return res ? 0 : 1;
    }
 
  //all automatic tests
  bool res = true; 
  res = res 
    && testWithoutLengthConstraint()
    && testWithLengthConstraint()
    && testSubsegment() 
    && testWithoutLengthConstraint2()
    && testSubsegment2()    
    ; 
 
  trace.emphase() << ( res ? "Passed." : "Error." ) << endl;
  trace.endBlock();
  return res ? 0 : 1;
}

References basicTest(), DGtal::Trace::beginBlock(), comparisonSubsegment(), DGtal::Trace::emphase(), DGtal::Trace::endBlock(), DGtal::Trace::info(), testSubsegment(), testSubsegment2(), testWithLengthConstraint(), testWithoutLengthConstraint(), testWithoutLengthConstraint2(), and DGtal::trace.

reversedSmartCHSubsegment()

template<typename DSS >

DSS::DSL reversedSmartCHSubsegment	(	const DSS &	aDSS,
		typename DSS::Position	aBound
	)

Computes the minimal parameters of a subsegment with reversedSmartCH

Parameters

aDSS	DSS containing the subsegment
aBound	maximal position

Returns

the computed DSL of minimal parameters

Template Parameters

DSS	an arithmetical DSS (either naive or standard)

Definition at line 629 of file testArithmeticalDSSConvexHull.cpp.

{
  ASSERT( (aBound - aDSS.position(aDSS.back())) > 0 ); 
 
  typedef typename DSS::Point Point; 
  typedef typename DSS::Vector Vector;
  typedef typename DSS::Integer Integer; 
  typedef typename DSS::DSL DSL; 
  
  Point startingPoint = aDSS.dsl().getPoint(aBound);  
 
  //running reversedSmartCH
  std::vector<Point> lch, uch; 
  Vector v = reversedSmartCH( aDSS, aBound,
                             std::back_inserter(uch), std::back_inserter(lch) );
 
  //computing the slope and the remainder of the last upper leaning point 
  Point upperLeaningPoint = uch.back(); 
  Integer intercept = (static_cast<Integer>(upperLeaningPoint[0])*static_cast<Integer>(v[1])
                       -static_cast<Integer>(upperLeaningPoint[1])*static_cast<Integer>(v[0])); 
 
  //trace.info() << "(" << v[1] << ", " << v[0] << ", " << intercept  << ")" << std::endl; 
  return DSL( v[1],v[0],intercept ); 
}

References DGtal::functions::reversedSmartCH().

Referenced by comparisonSubsegment2().

smartCHSubsegment()

template<typename DSL >

DSL smartCHSubsegment	(	const DSL &	aDSL,
		typename DSL::Position	x,
		typename DSL::Position	y
	)

Computes the minimal parameters of a subsegment with smartCH

Parameters

aDSL	DSL containing the subsegment
x	minimal position
y	maximal position

Precondition

x != y

Returns

the computed DSL of minimal parameters

Template Parameters

DSL	an arithmetical DSL (either naive or standard)

Definition at line 318 of file testArithmeticalDSSConvexHull.cpp.

{
  ASSERT((y-x) > 0); 
 
  typedef typename DSL::Point Point; 
  typedef typename DSL::Vector Vector;
  typedef typename DSL::Integer Integer; 
 
  Point startingPoint = aDSL.getPoint(x);  
 
  //running smartCH
  std::vector<Point> lch, uch; 
  Vector v = smartCH( aDSL, startingPoint, (y-x),
                      std::back_inserter(uch), std::back_inserter(lch) );
 
  //computing the slope and the remainder of the last upper leaning point 
  Point upperLeaningPoint = uch.back(); 
  Integer intercept = (static_cast<Integer>(upperLeaningPoint[0])*static_cast<Integer>(v[1])
                       -static_cast<Integer>(upperLeaningPoint[1])*static_cast<Integer>(v[0])); 
 
  // trace.info() << "(" << v[1] << ", " << v[0] << ", " << intercept  << ")" << std::endl; 
  return DSL( v[1],v[0],intercept ); 
}

References DGtal::functions::smartCH().

Referenced by comparisonSubsegment().

testSubsegment()

bool testSubsegment

(

)

Testing function.

Definition at line 448 of file testArithmeticalDSSConvexHull.cpp.

{
  trace.beginBlock ( "Testing block for the subsegment problem..." );
 
  bool res = true; 
  res = res 
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(5,8)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(8,13)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(12,29)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(29,70)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(8,5)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(-5,8)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(-8,5)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(5,-8)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(8,-5)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(-5,-8)
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t> >(-8,-5)
 
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(5,8)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(8,13)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(12,29)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(29,70)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(8,5)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(-5,8)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(-8,5)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(5,-8)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(8,-5)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(-5,-8)
    && comparisonSubsegment<StandardDSL<DGtal::int32_t> >(-8,-5)
 
#ifdef WITH_BIGINTEGER
    && comparisonSubsegment<NaiveDSL<DGtal::int32_t,DGtal::BigInteger> >(5,8)
    && comparisonSubsegment<NaiveDSL<DGtal::BigInteger,DGtal::BigInteger> >(5,8)
#endif
    ; 
 
  trace.endBlock();
 
  return res;    
}

References DGtal::Trace::beginBlock(), comparisonSubsegment(), DGtal::Trace::endBlock(), and DGtal::trace.

Referenced by main().

testSubsegment2()

bool testSubsegment2

(

)

Testing function.

Definition at line 730 of file testArithmeticalDSSConvexHull.cpp.

{
  trace.beginBlock ( "Testing block for the subsegment problem..." );
 
  bool res = true; 
  res = res 
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(5,8)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(8,13)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(12,29)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(29,70)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(8,5)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(-5,8)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(-8,5)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(5,-8)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(8,-5)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(-5,-8)
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t> >(-8,-5)
 
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(5,8)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(8,13)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(12,29)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(29,70)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(8,5)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(-5,8)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(-8,5)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(5,-8)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(8,-5)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(-5,-8)
    && comparisonSubsegment2<StandardDSL<DGtal::int32_t> >(-8,-5)
 
#ifdef WITH_BIGINTEGER
    && comparisonSubsegment2<NaiveDSL<DGtal::int32_t,DGtal::BigInteger> >(5,8)
    && comparisonSubsegment2<NaiveDSL<DGtal::BigInteger,DGtal::BigInteger> >(5,8)
#endif
    ; 
 
  trace.endBlock();
 
  return res;    
}

References DGtal::Trace::beginBlock(), comparisonSubsegment2(), DGtal::Trace::endBlock(), and DGtal::trace.

Referenced by main().

testWithLengthConstraint()

bool testWithLengthConstraint

(

)

Testing function.

Definition at line 286 of file testArithmeticalDSSConvexHull.cpp.

{
  trace.beginBlock ( "Testing block (with length constraint)..." );
 
  bool res = true; 
  res = res 
    && comparisonLeftHull<NaiveDSL<DGtal::int32_t> >(5,8)
    && comparisonLeftHull<NaiveDSL<DGtal::int32_t> >(8,13)
    && comparisonLeftHull<NaiveDSL<DGtal::int32_t> >(12,29)
    && comparisonLeftHull<NaiveDSL<DGtal::int32_t> >(29,70)
 
    && comparisonLeftHull<StandardDSL<DGtal::int32_t> >(5,8)
    && comparisonLeftHull<StandardDSL<DGtal::int32_t> >(8,13)
    && comparisonLeftHull<StandardDSL<DGtal::int32_t> >(12,29)
    && comparisonLeftHull<StandardDSL<DGtal::int32_t> >(29,70)
    ; 
 
  trace.endBlock();
 
  return res;    
}

References DGtal::Trace::beginBlock(), comparisonLeftHull(), DGtal::Trace::endBlock(), and DGtal::trace.

Referenced by main().

testWithoutLengthConstraint()

bool testWithoutLengthConstraint

(

)

Testing function.

Definition at line 137 of file testArithmeticalDSSConvexHull.cpp.

{
  trace.beginBlock ( "Testing block (without length constraint)..." );
 
  bool res = true; 
  res = res 
    && basicTest<NaiveDSL<DGtal::int32_t> >(5,8)
    && basicTest<NaiveDSL<DGtal::int32_t> >(8,13)
    && basicTest<NaiveDSL<DGtal::int32_t> >(12,29)
    && basicTest<NaiveDSL<DGtal::int32_t> >(29,70)
    && basicTest<NaiveDSL<DGtal::int32_t> >(70,29)
    && basicTest<NaiveDSL<DGtal::int32_t> >(-29,70)
    && basicTest<NaiveDSL<DGtal::int32_t> >(-70,29)
    && basicTest<NaiveDSL<DGtal::int32_t> >(29,-70)
    && basicTest<NaiveDSL<DGtal::int32_t> >(70,-29)
    && basicTest<NaiveDSL<DGtal::int32_t> >(-29,-70)
    && basicTest<NaiveDSL<DGtal::int32_t> >(-70,-29)
 
    && basicTest<StandardDSL<DGtal::int32_t> >(5,8)
    && basicTest<StandardDSL<DGtal::int32_t> >(8,13)
    && basicTest<StandardDSL<DGtal::int32_t> >(12,29)
    && basicTest<StandardDSL<DGtal::int32_t> >(29,70)
    && basicTest<StandardDSL<DGtal::int32_t> >(70,29)
    && basicTest<StandardDSL<DGtal::int32_t> >(-29,70)
    && basicTest<StandardDSL<DGtal::int32_t> >(-70,29)
    && basicTest<StandardDSL<DGtal::int32_t> >(29,-70)
    && basicTest<StandardDSL<DGtal::int32_t> >(70,-29)
    && basicTest<StandardDSL<DGtal::int32_t> >(-29,-70)
    && basicTest<StandardDSL<DGtal::int32_t> >(-70,-29)
 
 
    && basicTest<NaiveDSL<DGtal::int32_t> >(33, 109)
    && basicTest<NaiveDSL<DGtal::int32_t> >(109, 360)
    && basicTest<NaiveDSL<DGtal::int32_t> >(8, 73)
    && basicTest<NaiveDSL<DGtal::int32_t,DGtal::int64_t> >(30, 43)
#ifdef WITH_BIGINTEGER
    && basicTest<NaiveDSL<DGtal::int32_t,DGtal::BigInteger> >(57, 520)
    && basicTest<NaiveDSL<DGtal::BigInteger,DGtal::BigInteger> >(157, 225)
#endif
 
    ; 
 
  trace.endBlock();
 
  return res; 
}

References basicTest(), DGtal::Trace::beginBlock(), DGtal::Trace::endBlock(), and DGtal::trace.

Referenced by main().

testWithoutLengthConstraint2()

bool testWithoutLengthConstraint2

(

)

Testing function.

Definition at line 574 of file testArithmeticalDSSConvexHull.cpp.

{
  trace.beginBlock ( "Testing block (without length constraint)..." );
 
  bool res = true; 
  res = res 
    && basicTest2<NaiveDSL<DGtal::int32_t> >(5,8)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(8,13)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(12,29)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(29,70)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(70,29)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(-29,70)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(-70,29)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(29,-70)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(70,-29)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(-29,-70)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(-70,-29)
 
    && basicTest2<StandardDSL<DGtal::int32_t> >(5,8)
    && basicTest2<StandardDSL<DGtal::int32_t> >(8,13)
    && basicTest2<StandardDSL<DGtal::int32_t> >(12,29)
    && basicTest2<StandardDSL<DGtal::int32_t> >(29,70)
    && basicTest2<StandardDSL<DGtal::int32_t> >(70,29)
    && basicTest2<StandardDSL<DGtal::int32_t> >(-29,70)
    && basicTest2<StandardDSL<DGtal::int32_t> >(-70,29)
    && basicTest2<StandardDSL<DGtal::int32_t> >(29,-70)
    && basicTest2<StandardDSL<DGtal::int32_t> >(70,-29)
    && basicTest2<StandardDSL<DGtal::int32_t> >(-29,-70)
    && basicTest2<StandardDSL<DGtal::int32_t> >(-70,-29)
 
 
    && basicTest2<NaiveDSL<DGtal::int32_t> >(33, 109)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(109, 360)
    && basicTest2<NaiveDSL<DGtal::int32_t> >(8, 73)
    && basicTest2<NaiveDSL<DGtal::int32_t,DGtal::int64_t> >(30, 43)
#ifdef WITH_BIGINTEGER
    && basicTest2<NaiveDSL<DGtal::int32_t,DGtal::BigInteger> >(57, 520)
    && basicTest2<NaiveDSL<DGtal::BigInteger,DGtal::BigInteger> >(157, 225)
#endif
 
    ; 
 
  trace.endBlock();
 
  return res; 
}

References basicTest2(), DGtal::Trace::beginBlock(), DGtal::Trace::endBlock(), and DGtal::trace.

Referenced by main().

trivialSubsegment()

template<typename DSL >

DSL trivialSubsegment	(	const DSL &	aDSL,
		typename DSL::Position	x,
		typename DSL::Position	y
	)

Computes the minimal parameters of a subsegment with the classical recognition algorithm, implemented in ArithmeticalDSS.

Parameters

aDSL	DSL containing the subsegment
x	minimal position
y	maximal position

Precondition

x != y

Returns

the computed DSL of minimal parameters

Template Parameters

DSL	an arithmetical DSL (either naive or standard)

Definition at line 356 of file testArithmeticalDSSConvexHull.cpp.

{
  ASSERT((y-x) > 0); 
 
  typedef typename DSL::Point Point; 
  typedef typename DSL::Coordinate Coordinate; 
  typedef typename DSL::Integer Integer; 
  typedef typename DSL::ConstIterator ConstIterator; 
  typedef ArithmeticalDSS<Coordinate,Integer,DSL::foregroundAdjacency> DSS; 
 
  Point startingPoint = aDSL.getPoint(x); 
  ASSERT( aDSL(startingPoint) ); 
  Point endingPoint = aDSL.getPoint(y); 
  ASSERT( aDSL(endingPoint) ); 
 
  ConstIterator it = aDSL.begin(startingPoint); 
  ConstIterator ite = aDSL.end(endingPoint); 
  ASSERT (it != ite); 
 
  DSS dss = DSS(*it); 
  for (++it; (it != ite); ++it)
    {
      dss.extendFront(*it); 
    }
 
  //trace.info() << "(" << dss.a() << ", " << dss.b() << ", " << dss.mu() << ")" << std::endl; 
  return DSL(dss.a(), dss.b(), dss.mu());  
}

Referenced by comparisonSubsegment(), and comparisonSubsegment2().