mln::Gpoint< E > Struct Template Reference

Base class for implementation of point classes. More...

#include <gpoint.hh>

Inheritance diagram for mln::Gpoint< E >:

List of all members.

Public Types
typedef Gpoint< void >	category
typedef E	exact_t
Protected Member Functions
	Gpoint ()
Related Functions
(Note that these are not member functions.)
template<typename P , typename D >
P	operator+ (const Gpoint< P > &p, const Gdpoint< D > &dp)
	Add a delta-point rhs to a grid point lhs.
template<typename P , typename D >
P &	operator+= (Gpoint< P > &p, const Gdpoint< D > &dp)
	Shift a point by a delta-point dp.
template<typename L , typename R >
L::delta	operator- (const Gpoint< L > &lhs, const Gpoint< R > &rhs)
	Difference between a couple of grid point lhs and rhs.
template<typename P , typename D >
P &	operator-= (Gpoint< P > &p, const Gdpoint< D > &dp)
	Shift a point by the negate of a delta-point dp.
template<typename P , typename D >
P	operator/ (const Gpoint< P > &p, const value::scalar_< D > &dp)
	Divise a point by a scalar s.
template<typename P >
std::ostream &	operator<< (std::ostream &ostr, const Gpoint< P > &p)
	Print a grid point p into the output stream ostr.
template<typename L , typename R >
bool	operator== (const Gpoint< L > &lhs, const Gpoint< R > &rhs)
	Equality comparison between a couple of grid point lhs and rhs.

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Detailed Description

template<typename E>
struct mln::Gpoint< E >

Base class for implementation of point classes.

A point is an element of a space.

For instance, mln::point2d is the type of elements defined on the discrete square grid of the 2D plane.

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Member Typedef Documentation

template<typename E>

typedef Gpoint<void> mln::Gpoint< E >::category

Reimplemented from mln::Site< E >.

template<typename E>

typedef E mln::Object< E >::exact_t [inherited]

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Constructor & Destructor Documentation

template<typename E >

mln::Gpoint< E >::Gpoint

(

)

[inline, protected]

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Friends And Related Function Documentation

template<typename P , typename D >

P operator+	(	const Gpoint< P > &	p,
		const Gdpoint< D > &	dp
	)			[related]

Add a delta-point rhs to a grid point lhs.

Parameters:

[in]	p	A grid point.
[in]	dp	A delta-point.

The type of dp has to compatible with the type of p.

Returns:

A point (temporary object).

See also:

mln::Gdpoint

template<typename P , typename D >

P & operator+=	(	Gpoint< P > &	p,
		const Gdpoint< D > &	dp
	)			[related]

Shift a point by a delta-point dp.

Parameters:

[in,out]	p	The targeted point.
[in]	dp	A delta-point.

Returns:

A reference to the point p once translated by dp.

Precondition:

The type of dp has to be compatible with the type of p.

template<typename L , typename R >

L::delta operator-	(	const Gpoint< L > &	lhs,
		const Gpoint< R > &	rhs
	)			[related]

Difference between a couple of grid point lhs and rhs.

Parameters:

[in]	lhs	A first grid point.
[in]	rhs	A second grid point.

Warning:

There is no type promotion in Milena so the client has to make sure that both points are defined with the same type of coordinates.

Precondition:

Both lhs and rhs have to be defined on the same topology and with the same type of coordinates; otherwise this test does not compile.

Postcondition:

The result, dp, is such as lhs == rhs + dp.

Returns:

A delta point (temporary object).

See also:

mln::Gdpoint

template<typename P , typename D >

P & operator-=	(	Gpoint< P > &	p,
		const Gdpoint< D > &	dp
	)			[related]

Shift a point by the negate of a delta-point dp.

Parameters:

[in,out]	p	The targeted point.
[in]	dp	A delta-point.

Returns:

A reference to the point p once translated by - dp.

Precondition:

The type of dp has to be compatible with the type of p.

template<typename P , typename D >

P operator/	(	const Gpoint< P > &	p,
		const value::scalar_< D > &	dp
	)			[related]

Divise a point by a scalar s.

Parameters:

[in,out]	p	The targeted point.
[in]	dp	A scalar.

Returns:

A reference to the point p once divised by s.

template<typename P >

std::ostream & operator<<	(	std::ostream &	ostr,
		const Gpoint< P > &	p
	)			[related]

Print a grid point p into the output stream ostr.

Parameters:

[in,out]	ostr	An output stream.
[in]	p	A grid point.

Returns:

The modified output stream ostr.

template<typename L , typename R >

bool operator==	(	const Gpoint< L > &	lhs,
		const Gpoint< R > &	rhs
	)			[related]

Equality comparison between a couple of grid point lhs and rhs.

Parameters:

[in]	lhs	A first grid point.
[in]	rhs	A second grid point.

Precondition:

Both lhs and rhs have to be defined on the same topology; otherwise this test does not compile.

Returns:

True if both grid points have the same coordinates, otherwise false.