SegmentS2< FT > Class Template Reference

#include <SegmentS2.h>

Public Member Functions
	SegmentS2 ()
	SegmentS2 (const PointS2< FT > &sp, const PointS2< FT > &ep)
bool	is_horizontal () const
bool	is_vertical () const
bool	has_on (const PointS2< FT > &p) const
bool	collinear_has_on (const PointS2< FT > &p) const
bool	operator== (const SegmentS2< FT > &s) const
bool	operator!= (const SegmentS2< FT > &s) const
int	id () const
const PointS2< FT > &	start () const
const PointS2< FT > &	end () const
const PointS2< FT > &	source () const
const PointS2< FT > &	target () const
PointS2< FT >	min () const
PointS2< FT >	max () const
PointS2< FT >	vertex (int i) const
PointS2< FT >	point (int i) const
PointS2< FT >	operator[] (int i) const
FT	squared_length () const
DirectionS2< FT >	direction () const
LineS2< FT >	supporting_line () const
SegmentS2< FT >	opposite () const
SegmentS2< FT >	transform (const Aff_transformationS2< FT > &t) const
bool	is_degenerate () const
Bbox_2	bbox () const

Public Attributes
PointS2< FT >	s
PointS2< FT >	t

Detailed Description

template<class FT>
class SegmentS2< FT >

Definition at line 59 of file SegmentS2.h.

Constructor & Destructor Documentation

CGAL_KERNEL_CTOR_INLINE SegmentS2

(

)

Definition at line 104 of file SegmentS2.h.

{}

CGAL_KERNEL_CTOR_INLINE SegmentS2	(	const PointS2< FT > &	sp,
		const PointS2< FT > &	ep
	)

Definition at line 108 of file SegmentS2.h.

 : s(sp), t(ep) {}

Member Function Documentation

CGAL_KERNEL_INLINE Bbox_2 bbox

(

)

const

Definition at line 220 of file SegmentS2.h.

{ return source().bbox() + target().bbox(); }

CGAL_KERNEL_MEDIUM_INLINE bool collinear_has_on

(

const PointS2< FT > &

p

)

const

Definition at line 289 of file SegmentS2.h.

References NTS::abs(), CGAL_kernel_exactness_precondition, CGAL_NTS, collinear(), PointS2< FT >::x(), x, PointS2< FT >::y(), and y.

{
    CGAL_kernel_exactness_precondition( collinear(source(), p, target()) );
    if (CGAL_NTS abs(target().x()-source().x())
      > CGAL_NTS abs(target().y()-source().y())) {
        if (p.x() < source().x())
            return (p.x() >= target().x());
        if (p.x() <= target().x())
            return true;
        return (p.x() == source().x());
    } else {
        if (p.y() < source().y())
            return (p.y() >= target().y());
        if (p.y() <= target().y())
            return true;
        return (p.y() == source().y());
    }
}

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CGAL_KERNEL_INLINE DirectionS2< FT > direction

(

)

const

Definition at line 196 of file SegmentS2.h.

{ return DirectionS2<FT>( target() - source() ); }

const PointS2< FT > & end ( ) const

inline

Definition at line 134 of file SegmentS2.h.

Referenced by LineS2< FT >::LineS2().

{ return t; }

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CGAL_KERNEL_INLINE bool has_on

(

const PointS2< FT > &

p

)

const

Definition at line 273 of file SegmentS2.h.

References collinear().

{
  return(( p == source() )
         || ( p == target() )
         || ( collinear(source(), p, target())
             && ( DirectionS2<FT>(p - source())
                  !=
                  DirectionS2<FT>(p - target()))
             )
         );
}

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int id

(

)

const

bool is_degenerate ( ) const

inline

Definition at line 226 of file SegmentS2.h.

{ return (source() == target()); }

CGAL_KERNEL_INLINE bool is_horizontal

(

)

const

Definition at line 261 of file SegmentS2.h.

{ return source().y() == target().y(); }

CGAL_KERNEL_INLINE bool is_vertical

(

)

const

Definition at line 267 of file SegmentS2.h.

{ return source().x() == target().x(); }

CGAL_KERNEL_INLINE PointS2< FT > max

(

)

const

Definition at line 163 of file SegmentS2.h.

References lexicographically_xy_smaller().

{
  return (lexicographically_xy_smaller(source(),target())) ? target()
                                                           : source();
}

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CGAL_KERNEL_INLINE PointS2< FT > min

(

)

const

Definition at line 154 of file SegmentS2.h.

References lexicographically_xy_smaller().

{
  return (lexicographically_xy_smaller(source(),target())) ? source()
                                                           : target();
}

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bool operator!= ( const SegmentS2< FT > &  s ) const

inline

Definition at line 122 of file SegmentS2.h.

References s.

{ return !(*this == s); }

bool operator== ( const SegmentS2< FT > &  s ) const

inline

Definition at line 116 of file SegmentS2.h.

References SegmentS2< FT >::source(), and SegmentS2< FT >::target().

{ return ( (source() == s.source()) && (target() == s.target()) ); }

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PointS2< FT > operator[] ( int  i ) const

inline

Definition at line 184 of file SegmentS2.h.

{ return vertex(i); }

SegmentS2< FT > opposite ( ) const

inline

Definition at line 208 of file SegmentS2.h.

{ return SegmentS2<FT>(target(), source()); }

CGAL_KERNEL_INLINE PointS2< FT > point

(

int

i

)

const

Definition at line 178 of file SegmentS2.h.

{ return (i%2 ==0) ? source() : target(); }

const PointS2< FT > & source ( ) const

inline

Definition at line 141 of file SegmentS2.h.

References s.

Referenced by SegmentS2< FT >::operator==().

{ return s; }

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CGAL_KERNEL_INLINE FT squared_length

(

)

const

Definition at line 190 of file SegmentS2.h.

References squared_distance().

{ return squared_distance(source(), target()); }

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const PointS2< FT > & start ( ) const

inline

Definition at line 128 of file SegmentS2.h.

References s.

Referenced by LineS2< FT >::LineS2().

{ return s; }

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LineS2< FT > supporting_line ( ) const

inline

Definition at line 202 of file SegmentS2.h.

{ return LineS2<FT>(*this); }

const PointS2< FT > & target ( ) const

inline

Definition at line 147 of file SegmentS2.h.

Referenced by SegmentS2< FT >::operator==().

{ return t; }

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SegmentS2< FT > transform ( const Aff_transformationS2< FT > &  t ) const

inline

Definition at line 214 of file SegmentS2.h.

References Aff_transformationS2< FT >::transform().

{ return SegmentS2<FT>(t.transform(source()), t.transform(target())); }

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CGAL_KERNEL_INLINE PointS2< FT > vertex

(

int

i

)

const

Definition at line 172 of file SegmentS2.h.

{ return (i%2 ==0) ? source() : target(); }

Member Data Documentation

PointS2<FT> s

Definition at line 98 of file SegmentS2.h.

PointS2<FT> t

Definition at line 99 of file SegmentS2.h.

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The documentation for this class was generated from the following file:

• SegmentS2.h