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Eigen::ParametrizedLine< _Scalar, _AmbientDim > Class Template Reference

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#include <ParametrizedLine.h>

Public Types

enum  { AmbientDimAtCompileTime = _AmbientDim }
 
enum  { AmbientDimAtCompileTime = _AmbientDim, Options = _Options }
 
typedef _Scalar Scalar
 
typedef NumTraits< Scalar >::Real RealScalar
 
typedef Matrix< Scalar, AmbientDimAtCompileTime, 1 > VectorType
 
typedef _Scalar Scalar
 
typedef NumTraits< Scalar >::Real RealScalar
 
typedef DenseIndex Index
 
typedef Matrix< Scalar, AmbientDimAtCompileTime, 1, OptionsVectorType
 

Public Member Functions

 ParametrizedLine ()
 Default constructor without initialization.
 
 ParametrizedLine (int _dim)
 Constructs a dynamic-size line with _dim the dimension of the ambient space.
 
 ParametrizedLine (const VectorType &origin, const VectorType &direction)
 Initializes a parametrized line of direction direction and origin origin. More...
 
 ParametrizedLine (const Hyperplane< _Scalar, _AmbientDim > &hyperplane)
 Constructs a parametrized line from a 2D hyperplane. More...
 
int dim () const
 
const VectorTypeorigin () const
 
VectorTypeorigin ()
 
const VectorTypedirection () const
 
VectorTypedirection ()
 
RealScalar squaredDistance (const VectorType &p) const
 
RealScalar distance (const VectorType &p) const
 
VectorType projection (const VectorType &p) const
 
Scalar intersection (const Hyperplane< _Scalar, _AmbientDim > &hyperplane)
 
template<typename NewScalarType >
internal::cast_return_type< ParametrizedLine, ParametrizedLine< NewScalarType, AmbientDimAtCompileTime > >::type cast () const
 
template<typename OtherScalarType >
 ParametrizedLine (const ParametrizedLine< OtherScalarType, AmbientDimAtCompileTime > &other)
 Copy constructor with scalar type conversion.
 
bool isApprox (const ParametrizedLine &other, typename NumTraits< Scalar >::Real prec=precision< Scalar >()) const
 
 ParametrizedLine ()
 Default constructor without initialization.
 
template<int OtherOptions>
 ParametrizedLine (const ParametrizedLine< Scalar, AmbientDimAtCompileTime, OtherOptions > &other)
 
 ParametrizedLine (Index _dim)
 Constructs a dynamic-size line with _dim the dimension of the ambient space.
 
 ParametrizedLine (const VectorType &origin, const VectorType &direction)
 Initializes a parametrized line of direction direction and origin origin. More...
 
template<int OtherOptions>
 ParametrizedLine (const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &hyperplane)
 Constructs a parametrized line from a 2D hyperplane. More...
 
Index dim () const
 
const VectorTypeorigin () const
 
VectorTypeorigin ()
 
const VectorTypedirection () const
 
VectorTypedirection ()
 
RealScalar squaredDistance (const VectorType &p) const
 
RealScalar distance (const VectorType &p) const
 
VectorType projection (const VectorType &p) const
 
VectorType pointAt (const Scalar &t) const
 
template<int OtherOptions>
Scalar intersectionParameter (const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &hyperplane) const
 
template<int OtherOptions>
Scalar intersection (const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &hyperplane) const
 
template<int OtherOptions>
VectorType intersectionPoint (const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &hyperplane) const
 
template<typename NewScalarType >
internal::cast_return_type< ParametrizedLine, ParametrizedLine< NewScalarType, AmbientDimAtCompileTime, Options > >::type cast () const
 
template<typename OtherScalarType , int OtherOptions>
 ParametrizedLine (const ParametrizedLine< OtherScalarType, AmbientDimAtCompileTime, OtherOptions > &other)
 Copy constructor with scalar type conversion.
 
bool isApprox (const ParametrizedLine &other, const typename NumTraits< Scalar >::Real &prec=NumTraits< Scalar >::dummy_precision()) const
 
template<int OtherOptions>
_Scalar intersectionParameter (const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &hyperplane) const
 
template<int OtherOptions>
_Scalar intersection (const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &hyperplane) const
 

Static Public Member Functions

static ParametrizedLine Through (const VectorType &p0, const VectorType &p1)
 Constructs a parametrized line going from p0 to p1. More...
 
static ParametrizedLine Through (const VectorType &p0, const VectorType &p1)
 Constructs a parametrized line going from p0 to p1. More...
 

Protected Attributes

VectorType m_origin
 
VectorType m_direction
 

Detailed Description

template<typename _Scalar, int _AmbientDim>
class Eigen::ParametrizedLine< _Scalar, _AmbientDim >

A parametrized line

A parametrized line is defined by an origin point \( \mathbf{o} \) and a unit direction vector \( \mathbf{d} \) such that the line corresponds to the set \( l(t) = \mathbf{o} + t \mathbf{d} \), \( l \in \mathbf{R} \).

Parameters
_Scalarthe scalar type, i.e., the type of the coefficients
_AmbientDimthe dimension of the ambient space, can be a compile time value or Dynamic.

A parametrized line

A parametrized line is defined by an origin point \( \mathbf{o} \) and a unit direction vector \( \mathbf{d} \) such that the line corresponds to the set \( l(t) = \mathbf{o} + t \mathbf{d} \), \( t \in \mathbf{R} \).

Parameters
_Scalarthe scalar type, i.e., the type of the coefficients
_AmbientDimthe dimension of the ambient space, can be a compile time value or Dynamic.

Constructor & Destructor Documentation

§ ParametrizedLine() [1/4]

template<typename _Scalar, int _AmbientDim>
Eigen::ParametrizedLine< _Scalar, _AmbientDim >::ParametrizedLine ( const VectorType origin,
const VectorType direction 
)
inline

Initializes a parametrized line of direction direction and origin origin.

Warning
the vector direction is assumed to be normalized.

§ ParametrizedLine() [2/4]

template<typename _Scalar , int _AmbientDim>
Eigen::ParametrizedLine< _Scalar, _AmbientDim >::ParametrizedLine ( const Hyperplane< _Scalar, _AmbientDim > &  hyperplane)
inlineexplicit

Constructs a parametrized line from a 2D hyperplane.

Warning
the ambient space must have dimension 2 such that the hyperplane actually describes a line

§ ParametrizedLine() [3/4]

template<typename _Scalar, int _AmbientDim>
Eigen::ParametrizedLine< _Scalar, _AmbientDim >::ParametrizedLine ( const VectorType origin,
const VectorType direction 
)
inline

Initializes a parametrized line of direction direction and origin origin.

Warning
the vector direction is assumed to be normalized.

§ ParametrizedLine() [4/4]

template<typename _Scalar , int _AmbientDim, int _Options>
template<int OtherOptions>
Eigen::ParametrizedLine< _Scalar, _AmbientDim, _Options >::ParametrizedLine ( const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &  hyperplane)
inlineexplicit

Constructs a parametrized line from a 2D hyperplane.

Warning
the ambient space must have dimension 2 such that the hyperplane actually describes a line

Member Function Documentation

§ cast() [1/2]

template<typename _Scalar, int _AmbientDim>
template<typename NewScalarType >
internal::cast_return_type<ParametrizedLine, ParametrizedLine<NewScalarType,AmbientDimAtCompileTime> >::type Eigen::ParametrizedLine< _Scalar, _AmbientDim >::cast ( ) const
inline
Returns
*this with scalar type casted to NewScalarType

Note that if NewScalarType is equal to the current scalar type of *this then this function smartly returns a const reference to *this.

§ cast() [2/2]

template<typename _Scalar, int _AmbientDim>
template<typename NewScalarType >
internal::cast_return_type<ParametrizedLine, ParametrizedLine<NewScalarType,AmbientDimAtCompileTime,Options> >::type Eigen::ParametrizedLine< _Scalar, _AmbientDim >::cast ( ) const
inline
Returns
*this with scalar type casted to NewScalarType

Note that if NewScalarType is equal to the current scalar type of *this then this function smartly returns a const reference to *this.

§ dim() [1/2]

template<typename _Scalar, int _AmbientDim>
int Eigen::ParametrizedLine< _Scalar, _AmbientDim >::dim ( ) const
inline
Returns
the dimension in which the line holds

§ dim() [2/2]

template<typename _Scalar, int _AmbientDim>
Index Eigen::ParametrizedLine< _Scalar, _AmbientDim >::dim ( ) const
inline
Returns
the dimension in which the line holds

§ distance() [1/2]

template<typename _Scalar, int _AmbientDim>
RealScalar Eigen::ParametrizedLine< _Scalar, _AmbientDim >::distance ( const VectorType p) const
inline
Returns
the distance of a point p to its projection onto the line *this.
See also
squaredDistance()

§ distance() [2/2]

template<typename _Scalar, int _AmbientDim>
RealScalar Eigen::ParametrizedLine< _Scalar, _AmbientDim >::distance ( const VectorType p) const
inline
Returns
the distance of a point p to its projection onto the line *this.
See also
squaredDistance()

§ intersection() [1/2]

template<typename _Scalar , int _AmbientDim>
_Scalar Eigen::ParametrizedLine< _Scalar, _AmbientDim >::intersection ( const Hyperplane< _Scalar, _AmbientDim > &  hyperplane)
inline
Returns
the parameter value of the intersection between *this and the given hyperplane

§ intersection() [2/2]

template<typename _Scalar, int _AmbientDim>
template<int OtherOptions>
_Scalar Eigen::ParametrizedLine< _Scalar, _AmbientDim >::intersection ( const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &  hyperplane) const
inline
Deprecated:
use intersectionParameter()
Returns
the parameter value of the intersection between *this and the given hyperplane

§ intersectionParameter()

template<typename _Scalar, int _AmbientDim>
template<int OtherOptions>
_Scalar Eigen::ParametrizedLine< _Scalar, _AmbientDim >::intersectionParameter ( const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &  hyperplane) const
inline
Returns
the parameter value of the intersection between *this and the given hyperplane

§ intersectionPoint()

template<typename _Scalar , int _AmbientDim, int _Options>
template<int OtherOptions>
ParametrizedLine< _Scalar, _AmbientDim, _Options >::VectorType Eigen::ParametrizedLine< _Scalar, _AmbientDim, _Options >::intersectionPoint ( const Hyperplane< _Scalar, _AmbientDim, OtherOptions > &  hyperplane) const
inline
Returns
the point of the intersection between *this and the given hyperplane

§ isApprox() [1/2]

template<typename _Scalar, int _AmbientDim>
bool Eigen::ParametrizedLine< _Scalar, _AmbientDim >::isApprox ( const ParametrizedLine< _Scalar, _AmbientDim > &  other,
typename NumTraits< Scalar >::Real  prec = precision<Scalar>() 
) const
inline
Returns
true if *this is approximately equal to other, within the precision determined by prec.
See also
MatrixBase::isApprox()

§ isApprox() [2/2]

template<typename _Scalar, int _AmbientDim>
bool Eigen::ParametrizedLine< _Scalar, _AmbientDim >::isApprox ( const ParametrizedLine< _Scalar, _AmbientDim > &  other,
const typename NumTraits< Scalar >::Real &  prec = NumTraits<Scalar>::dummy_precision() 
) const
inline
Returns
true if *this is approximately equal to other, within the precision determined by prec.
See also
MatrixBase::isApprox()

§ pointAt()

template<typename _Scalar , int _AmbientDim, int _Options>
ParametrizedLine< _Scalar, _AmbientDim, _Options >::VectorType Eigen::ParametrizedLine< _Scalar, _AmbientDim, _Options >::pointAt ( const Scalar &  t) const
inline
Returns
the point at t along this line

§ projection() [1/2]

template<typename _Scalar, int _AmbientDim>
VectorType Eigen::ParametrizedLine< _Scalar, _AmbientDim >::projection ( const VectorType p) const
inline
Returns
the projection of a point p onto the line *this.

§ projection() [2/2]

template<typename _Scalar, int _AmbientDim>
VectorType Eigen::ParametrizedLine< _Scalar, _AmbientDim >::projection ( const VectorType p) const
inline
Returns
the projection of a point p onto the line *this.

§ squaredDistance() [1/2]

template<typename _Scalar, int _AmbientDim>
RealScalar Eigen::ParametrizedLine< _Scalar, _AmbientDim >::squaredDistance ( const VectorType p) const
inline
Returns
the squared distance of a point p to its projection onto the line *this.
See also
distance()

§ squaredDistance() [2/2]

template<typename _Scalar, int _AmbientDim>
RealScalar Eigen::ParametrizedLine< _Scalar, _AmbientDim >::squaredDistance ( const VectorType p) const
inline
Returns
the squared distance of a point p to its projection onto the line *this.
See also
distance()

§ Through() [1/2]

template<typename _Scalar, int _AmbientDim>
static ParametrizedLine Eigen::ParametrizedLine< _Scalar, _AmbientDim >::Through ( const VectorType p0,
const VectorType p1 
)
inlinestatic

Constructs a parametrized line going from p0 to p1.

§ Through() [2/2]

template<typename _Scalar, int _AmbientDim>
static ParametrizedLine Eigen::ParametrizedLine< _Scalar, _AmbientDim >::Through ( const VectorType p0,
const VectorType p1 
)
inlinestatic

Constructs a parametrized line going from p0 to p1.


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