gtkmm: Gdk::Graphene::Point Class Reference

gtkmm 4.14.0

Public Member Functions | Protected Attributes | Related Symbols | List of all members
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