Gdk::Graphene::Point Class Reference

A point with 2 coordinates. More...

#include <gdkmm/graphene_point.h>

Public Member Functions
	Point ()
	Constructs an invalid object.
	Point (graphene_point_t *castitem, bool make_a_copy=false)
	Point (const Point &src)
Point &	operator= (const Point &src)
	Point (Point &&other) noexcept
Point &	operator= (Point &&other) noexcept
	~Point () noexcept
void	swap (Point &other) noexcept
graphene_point_t *	gobj ()
const graphene_point_t *	gobj () const
graphene_point_t *	gobj_copy () const
	Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs.
	Point (float x, float y)
	operator bool () const
	Checks if this instance is valid.
float	get_x () const
void	set_x (const float & value)
float	get_y () const
void	set_y (const float & value)
bool	equal (const Point & b) const
	Checks if the two points a and b point to the same coordinates.
bool	near (const Point & b, float epsilon) const
	Checks whether the two points a and b are within the threshold of epsilon.

Protected Attributes
graphene_point_t *	gobject_

Related Symbols
(Note that these are not member symbols.)
void	swap (Point &lhs, Point &rhs) noexcept
Gdk::Graphene::Point	wrap (graphene_point_t *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Detailed Description

A point with 2 coordinates.

Gdk::Graphene::Point is a data structure capable of describing a point with two coordinates.

Since gtkmm 4.12:

Constructor & Destructor Documentation

Point() [1/5]

Gdk::Graphene::Point::Point

(

)

Constructs an invalid object.

E.g. for output arguments to methods. There is not much you can do with the object before it has been assigned a valid value.

Point() [2/5]

Gdk::Graphene::Point::Point ( graphene_point_t *  castitem, bool  make_a_copy = false  )

explicit

Point() [3/5]

Gdk::Graphene::Point::Point

(

const Point &

src

)

Point() [4/5]

Gdk::Graphene::Point::Point ( Point &&  other )

noexcept

~Point()

Gdk::Graphene::Point::~Point ( )

noexcept

Point() [5/5]

Gdk::Graphene::Point::Point	(	float	x,
		float	y
	)

Member Function Documentation

equal()

bool Gdk::Graphene::Point::equal

(

const Point &

b

)

const

Checks if the two points a and b point to the same coordinates.

This function accounts for floating point fluctuations; if you want to control the fuzziness of the match, you can use graphene_point_near() instead.

Since gtkmm 4.12:

Parameters

b	A graphene_point_t.

Returns

true if the points have the same coordinates.

get_x()

float Gdk::Graphene::Point::get_x

(

)

const

get_y()

float Gdk::Graphene::Point::get_y

(

)

const

gobj() [1/2]

graphene_point_t * Gdk::Graphene::Point::gobj ( )

inline

gobj() [2/2]

const graphene_point_t * Gdk::Graphene::Point::gobj ( ) const

inline

gobj_copy()

graphene_point_t * Gdk::Graphene::Point::gobj_copy

(

)

const

Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs.

near()

bool Gdk::Graphene::Point::near	(	const Point &	b,
		float	epsilon
	)		const

Checks whether the two points a and b are within the threshold of epsilon.

Since gtkmm 4.12:

Parameters

b	A graphene_point_t.
epsilon	Threshold between the two points.

Returns

true if the distance is within epsilon.

operator bool()

Gdk::Graphene::Point::operator bool ( ) const

explicit

Checks if this instance is valid.

It is valid if and only if it contains a value. For instance,

if (point)
  do_something()

operator=() [1/2]

Point & Gdk::Graphene::Point::operator=

(

const Point &

src

)

operator=() [2/2]

Point & Gdk::Graphene::Point::operator= ( Point &&  other )

noexcept

set_x()

void Gdk::Graphene::Point::set_x

(

const float &

value

)

set_y()

void Gdk::Graphene::Point::set_y

(

const float &

value

)

swap()

void Gdk::Graphene::Point::swap ( Point &  other )

noexcept

Friends And Related Symbol Documentation

swap()

void swap ( Point &  lhs, Point &  rhs  )

related

Parameters

lhs	The left-hand side
rhs	The right-hand side

wrap()

Gdk::Graphene::Point wrap ( graphene_point_t *  object, bool  take_copy = false  )

related

A Glib::wrap() method for this object.

Parameters

object	The C instance.
take_copy	False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns

A C++ instance that wraps this C instance.

Member Data Documentation

gobject_

graphene_point_t* Gdk::Graphene::Point::gobject_

protected