xtd::drawing::point Class Reference

Inheritance diagram for xtd::drawing::point:

Definition

Represents an ordered pair of integer x- and y-coordinates that defines a point in a two-dimensional plane.

class drawing_export_ point : public xtd::object

Inheritance

xtd::object → xtd::drawing::point

Namespace

xtd::drawing

Library

xtd.drawing

Remarks

To convert a point to a point_f, use Implicit cast operator.

Examples

void create_points_and_sizes(paint_event_args& e) {
  // Create the starting point.
  point start_point = subtract_button.size();
 
  // Use the addition operator to get the end point.
  point end_point = start_point + size(140, 150);
 
  // Draw a line between the points.
  e.graphics().draw_line(system_pens::highlight, start_point, end_point);
 
  // Convert the starting point to a size and compare it to the subtractButton size.
  size button_size(start_point);
  if (button_size == subtract_button.size()) {
    // If the sizes are equal, tell the user.
    e.graphics().draw_string("The sizes are equal.", font(font, font_style.italic), brushes::indigo, 10.0F, 65.0F);
  }
}

Examples

animation.cpp, application_settings_without_cmake_setting_commands.cpp, buttons.cpp, circular_form.cpp, colored_forms.cpp, docked_panels.cpp, draw_point.cpp, emplace.cpp, fill_ellipse.cpp, fill_rectangle.cpp, fill_rounded_rectangle.cpp, form_paint.cpp, graph_control.cpp, graphics.cpp, labels_and_unicode_text.cpp, lcd_label3.cpp, minesweeper.cpp, point.cpp, screenshot.cpp, tutorial_button.cpp, user_control.cpp, and wiggly.cpp.

Public Fields
static const point	empty
	Represents a xtd::drawing::point that has xtd::drawing::point::x and xtd::drawing::point::y values set to zero.

Public Constructors
	point () noexcept=default
	Initializes a new instance of the xtd::drawing::point class.
	point (int32 dw) noexcept
	Initializes a new instance of the xtd::drawing::point class using coordinates specified by an integer value.
	point (int32 x, int32 y) noexcept
	Initializes a new instance of the xtd::drawing::point class with the specified coordinates.
	point (const size &sz) noexcept
	Initializes a new instance of the xtd::drawing::point class from a xtd::drawing::size.

Public Properties
bool	is_empty () const noexcept
	Gets a value indicating whether this xtd::drawing::point is empty.
int32	x () const noexcept
	Gets the x-coordinate of this xtd::drawing::point.
void	x (int32 x) noexcept
	Sets the x-coordinate of this xtd::drawing::point.
int32	y () const noexcept
	Gets the y-coordinate of this xtd::drawing::point.
void	y (int32 y) noexcept
	Sets the y-coordinate of this xtd::drawing::point.

Public Methods
bool	equals (const point &value) const noexcept override
void	offset (int32 dx, int32 dy) noexcept
	Translates this xtd::drawing::point by the specified amount.
void	offset (const point &p) noexcept
	Translates this xtd::drawing::point by the specified xtd::drawing::point.
xtd::string	to_string () const noexcept override
	Converts this point to a human-readable string.
virtual bool	equals (const object &obj) const noexcept
	Determines whether the specified object is equal to the current object.
static point	truncate (const point_f &value) noexcept
	Converts the specified xtd::drawing::point_f to a point by truncating the values of the xtd::drawing::point_f.
static point	add (const point &pt, const size &sz) noexcept
	Adds the specified xtd::drawing::size to the specified xtd::drawing::point.
static point	add (const point &pt1, const point &pt2) noexcept
	Adds the specified xtd::drawing::point to the specified xtd::drawing::point.
static point	ceiling (const point_f &value) noexcept
	Converts the specified xtd::drawing::point_f to a point by rounding the values of the xtd::drawing::point_f to the next higher integer values.
static point	round (const point_f &value) noexcept
	Converts the specified xtd::drawing::point_f to a point object by rounding the xtd::drawing::point_f values to the nearest integer.
static point	subtract (const point &pt, const size &sz) noexcept
	Returns the result of subtracting specified xtd::drawing::size from the specified xtd::drawing::point.
static point	subtract (const point &pt1, const point &pt2) noexcept
	Returns the result of subtracting specified xtd::drawing::point from the specified xtd::drawing::point.
template<typename object_a_t , typename object_b_t >
static bool	equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are considered equal.

Operators
point	operator+ (const size &sz) const noexcept
	Translates a xtd::drawing::point by a given xtd::drawing::size.
point	operator+ (const point &pt) const noexcept
	Translates a xtd::drawing::point by a given xtd::drawing::point.
point &	operator+= (const size &sz) noexcept
	Translates a xtd::drawing::point by a given xtd::drawing::size.
point &	operator+= (const point &pt) noexcept
	Translates a xtd::drawing::point by a given xtd::drawing::point.
point	operator- (const size &sz) const noexcept
	Translates a xtd::drawing::point by the negative of a given xtd::drawing::size.
point	operator- (const point &pt) const noexcept
	Translates a xtd::drawing::point by the negative of a given xtd::drawing::point.
point &	operator-= (const size &sz) noexcept
	Translates a xtd::drawing::point by the negative of a given xtd::drawing::size.
point &	operator-= (const point &pt) noexcept
	Translates a xtd::drawing::point by the negative of a given xtd::drawing::point.

Additional Inherited Members
Public Member Functions inherited from xtd::object
	object ()=default
	Create a new instance of the ultimate base class object.
virtual size_t	get_hash_code () const noexcept
	Serves as a hash function for a particular type.
virtual type_object	get_type () const noexcept
	Gets the type of the current instance.
template<typename object_t >
xtd::uptr< object_t >	memberwise_clone () const
	Creates a shallow copy of the current object.
Public Member Functions inherited from xtd::iequatable< point >
virtual bool	equals (const point &) const noexcept=0
	Indicates whether the current object is equal to another object of the same type.
Static Public Member Functions inherited from xtd::object
template<typename object_a_t , typename object_b_t >
static bool	equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are considered equal.
template<typename object_a_t , typename object_b_t >
static bool	reference_equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are the same instance.

Constructor & Destructor Documentation

point() [1/4]

xtd::drawing::point::point ( )

defaultnoexcept

Initializes a new instance of the xtd::drawing::point class.

Remarks

xtd::drawing::point::x and xtd::drawing::point::y values are set to zero.

point() [2/4]

xtd::drawing::point::point ( int32  dw )

explicitnoexcept

Initializes a new instance of the xtd::drawing::point class using coordinates specified by an integer value.

Parameters

dx	A 32-bit integer that specifies the coordinates for the new xtd::drawing::point.

Remarks

The low-order 16 bits of the dw parameter specify the horizontal x-coordinate and the higher 16 bits specify the vertical y-coordinate for the new point.

Examples

The following code example demonstrates how to use the point and size. size constructors and the xtd::drawing::content_alignment enumeration. To run this example, paste this code into a Windows Form (xtd::forms) that contains a label named label1, and call the initialize_label1 method in the form's constructor.

void initialize_label1() {
  // Set a border.
  label1.border_style = border_style::fixed_single;
 
  // Set the size, constructing a size from two integers.
  label1.size(drawing::size(100, 50));
 
  // Set the location, constructing a point from a 32-bit integer
  // (using hexadecimal).
  label1.location(point(0x280028));
 
  // Set and align the text on the lower-right side of the label.
  label1.text_align = content_alignment::bottom_right;
  label1.text = "Bottom Right Alignment";
}

point() [3/4]

xtd::drawing::point::point ( int32  x, int32  y  )

noexcept

Initializes a new instance of the xtd::drawing::point class with the specified coordinates.

Parameters

x	The horizontal position of the point.
y	The vertical position of the point.

Examples

The following code example demonstrates how to use the Equality operator and how to construct a point from a size or two integers. It also demonstrates how to use the x and y properties. This example is designed to be used with Windows Forms (xtd.forms). Paste the code into a form that contains a button named button1, and associate the button1_click method with the button's click event.

void button1_click(object& sender, const event_args& e) {
  // Construct a new point with integers.
  point point1(100, 100);
 
  // Create a Graphics object.
  graphics form_graphics = create_graphics();
 
  // Construct another point, this time using a xtd::drawing::size.
  point point2(size(100, 100));
 
  // Call the equality operator to see if the points are equal, and if so print out their x and y values.
  if (point1 == point2) {
    form_graphics.draw_string(string::format("point1.x: {}, point2.x: {}, point1.y: {}, point2.y {}", point1.x(), point2.x(), point1.y(), point2.y()), font(), brushes::black, point_f(10, 70));
  }
}

point() [4/4]

xtd::drawing::point::point ( const size &  sz )

explicitnoexcept

Initializes a new instance of the xtd::drawing::point class from a xtd::drawing::size.

Parameters

sz	A size that specifies the coordinates for the new point.

Examples

The following code example demonstrates how to use the Equality operator and how to construct a point from a size or two integers. It also demonstrates how to use the x and y properties. This example is designed to be used with Windows Forms (xtd.forms). Paste the code into a form that contains a button named button1, and associate the button1_click method with the button's click event.

void button1_click(object& sender, const event_args& e) {
  // Construct a new point with integers.
  point point1(100, 100);
 
  // Create a Graphics object.
  graphics form_graphics = create_graphics();
 
  // Construct another point, this time using a xtd::drawing::size.
  point point2(size(100, 100));
 
  // Call the equality operator to see if the points are equal, and if so print out their x and y values.
  if (point1 == point2) {
    form_graphics.draw_string(string::format("point1.x: {}, point2.x: {}, point1.y: {}, point2.y {}", point1.x(), point2.x(), point1.y(), point2.y()), font(), brushes::black, point_f(10, 70));
  }
}

Member Function Documentation

is_empty()

bool xtd::drawing::point::is_empty ( ) const

noexcept

Gets a value indicating whether this xtd::drawing::point is empty.

Returns

true if both xtd::drawing::point::x and xtd::drawing::point::y are 0; otherwise, false.

x() [1/2]

int32 xtd::drawing::point::x ( ) const

noexcept

Gets the x-coordinate of this xtd::drawing::point.

Returns

The x-coordinate of this xtd::drawing::point.

Examples

The following code example demonstrates how to use the Equality operator and how to construct a point from a size or two integers. It also demonstrates how to use the x and y properties. This example is designed to be used with Windows Forms (xtd.forms). Paste the code into a form that contains a button named button1, and associate the button1_click method with the button's click event.

void button1_click(object& sender, const event_args& e) {
  // Construct a new point with integers.
  point point1(100, 100);
 
  // Create a Graphics object.
  graphics form_graphics = create_graphics();
 
  // Construct another point, this time using a xtd::drawing::size.
  point point2(size(100, 100));
 
  // Call the equality operator to see if the points are equal, and if so print out their x and y values.
  if (point1 == point2) {
    form_graphics.draw_string(string::format("point1.x: {}, point2.x: {}, point1.y: {}, point2.y {}", point1.x(), point2.x(), point1.y(), point2.y()), font(), brushes::black, point_f(10, 70));
  }
}

Examples

animation.cpp, and minesweeper.cpp.

x() [2/2]

void xtd::drawing::point::x ( int32  x )

noexcept

Sets the x-coordinate of this xtd::drawing::point.

Parameters

x	The x-coordinate of this xtd::drawing::point.

Examples

The following code example demonstrates how to use the Equality operator and how to construct a point from a size or two integers. It also demonstrates how to use the x and y properties. This example is designed to be used with Windows Forms (xtd.forms). Paste the code into a form that contains a button named button1, and associate the button1_click method with the button's click event.

void button1_click(object& sender, const event_args& e) {
  // Construct a new point with integers.
  point point1(100, 100);
 
  // Create a Graphics object.
  graphics form_graphics = create_graphics();
 
  // Construct another point, this time using a xtd::drawing::size.
  point point2(size(100, 100));
 
  // Call the equality operator to see if the points are equal, and if so print out their x and y values.
  if (point1 == point2) {
    form_graphics.draw_string(string::format("point1.x: {}, point2.x: {}, point1.y: {}, point2.y {}", point1.x(), point2.x(), point1.y(), point2.y()), font(), brushes::black, point_f(10, 70));
  }
}

y() [1/2]

int32 xtd::drawing::point::y ( ) const

noexcept

Gets the y-coordinate of this xtd::drawing::point.

Returns

The y-coordinate of this xtd::drawing::point.

Examples

The following code example demonstrates how to use the Equality operator and how to construct a point from a size or two integers. It also demonstrates how to use the x and y properties. This example is designed to be used with Windows Forms (xtd.forms). Paste the code into a form that contains a button named button1, and associate the button1_click method with the button's click event.

void button1_Click(object& sender, const event_args& e) {
  // Construct a new point with integers.
  point point1(100, 100);
 
  // Create a Graphics object.
  graphics form_graphics = create_graphics();
 
  // Construct another point, this time using a xtd::drawing::size.
  point point2(size(100, 100));
 
  // Call the equality operator to see if the points are equal, and if so print out their x and y values.
  if (point1 == point2) {
    form_graphics.draw_string(string::format("point1.x: {}, point2.x: {}, point1.y: {}, point2.y {}", point1.x(), point2.x(), point1.y(), point2.y()), font(), brushes::black, point_f(10, 70));
  }
}

Examples

animation.cpp, minesweeper.cpp, and screen.cpp.

y() [2/2]

void xtd::drawing::point::y ( int32  y )

noexcept

Sets the y-coordinate of this xtd::drawing::point.

Parameters

y	The x-coordinate of this xtd::drawing::point.

Examples

The following code example demonstrates how to use the Equality operator and how to construct a point from a size or two integers. It also demonstrates how to use the x and y properties. This example is designed to be used with Windows Forms (xtd.forms). Paste the code into a form that contains a button named button1, and associate the button1_click method with the button's click event.

void button1_Click(object& sender, const event_args& e) {
  // Construct a new point with integers.
  point point1(100, 100);
 
  // Create a Graphics object.
  graphics form_graphics = create_graphics();
 
  // Construct another point, this time using a xtd::drawing::size.
  point point2(size(100, 100));
 
  // Call the equality operator to see if the points are equal, and if so print out their x and y values.
  if (point1 == point2) {
    form_graphics.draw_string(string::format("point1.x: {}, point2.x: {}, point1.y: {}, point2.y {}", point1.x(), point2.x(), point1.y(), point2.y()), font(), brushes::black, point_f(10, 70));
  }
}

offset() [1/2]

void xtd::drawing::point::offset ( int32  dx, int32  dy  )

noexcept

Translates this xtd::drawing::point by the specified amount.

Parameters

dx	The amount to offset the x-coordinate.
dy	The amount to offset the y-coordinate.

offset() [2/2]

void xtd::drawing::point::offset ( const point &  p )

noexcept

Translates this xtd::drawing::point by the specified xtd::drawing::point.

Parameters

p	The xtd::drawing::point used offset this xtd::drawing::point.

Remarks

This method adjusts the xtd::drawing::point::x and xtd::drawing::point::y values of this xtd::drawing::point to the sum of the xtd::drawing::point::x and xtd::drawing::point::y values of this xtd::drawing::point and p.

Examples

The following example shows how to use the Offset method. To run this example, paste it into a Windows Form. Handle the form's xtd::forms::control::paint event and call the Offsetpoint method from the xtd::forms::control::paint event-handling method, passing e as xtd::forms::paint_event_args.

void offset_point(paint_event_args& e) {
  point point1(10, 10);
  point1.offset(50, 0);
  point point2(250, 10);
  e.graphics().draw_line(pens::red, point1, point2);
}

to_string()

xtd::string xtd::drawing::point::to_string ( ) const

overridevirtualnoexcept

Converts this point to a human-readable string.

Returns

An xtd::string that represents this xtd::drawing::point.

Reimplemented from xtd::object.

truncate()

static point xtd::drawing::point::truncate ( const point_f &  value )

staticnoexcept

Converts the specified xtd::drawing::point_f to a point by truncating the values of the xtd::drawing::point_f.

Parameters

value

The xtd::drawing::point_f to convert.

Returns

The xtd::drawing::point this method converts to.

add() [1/2]

static point xtd::drawing::point::add ( const point &  pt, const size &  sz  )

staticnoexcept

Adds the specified xtd::drawing::size to the specified xtd::drawing::point.

Parameters

pt	The xtd::drawing::point to add.
sz	The xtd::drawing::size to add.

Returns

The xtd::drawing::point that is the result of the addition operation.

Remarks

The xtd::drawing::point::add adds the xtd::drawing::size::width and xtd::drawing::size::height of the specified size to the xtd::drawing::point::x and xtd::drawing::point::y values of the specified xtd::drawing::point.

Examples

The following example shows how to use the add method. To run this example, paste it into a Windows Form (xtd::forms. Handle the form's xtd::forms::control::paint event and call the add_point method from the paint event-handling method, passing e as paint_event_args.

void add_point(paint_event_args& e) {
  point point1(10, 10);
  point point2 = point::add(point1, drawing::size(250,0));
  e.graphics().draw_line(pens::red, point1, point2);
}

add() [2/2]

static point xtd::drawing::point::add ( const point &  pt1, const point &  pt2  )

staticnoexcept

Adds the specified xtd::drawing::point to the specified xtd::drawing::point.

Parameters

pt1	The xtd::drawing::point to add.
pt2	The xtd::drawing::point to add.

Returns

The xtd::drawing::point that is the result of the addition operation.

ceiling()

static point xtd::drawing::point::ceiling ( const point_f &  value )

staticnoexcept

Converts the specified xtd::drawing::point_f to a point by rounding the values of the xtd::drawing::point_f to the next higher integer values.

Parameters

value

The xtd::drawing::point_f to convert.

Returns

The xtd::drawing::point this method converts to.

round()

static point xtd::drawing::point::round ( const point_f &  value )

staticnoexcept

Converts the specified xtd::drawing::point_f to a point object by rounding the xtd::drawing::point_f values to the nearest integer.

Parameters

value

The xtd::drawing::point_f to convert.

Returns

The xtd::drawing::point this method converts to.

subtract() [1/2]

static point xtd::drawing::point::subtract ( const point &  pt, const size &  sz  )

staticnoexcept

Returns the result of subtracting specified xtd::drawing::size from the specified xtd::drawing::point.

Parameters

pt	The xtd::drawing::point to be subtracted from.
sz	The xtd::drawing::size to subtract from the xtd::drawing::point.

Returns

The xtd::drawing::point that is the result of the subtraction operation.

Remarks

The xtd::drawing::point::subtract subtracts the xtd::drawing::size::width and xtd::drawing::size::height of the specified xtd::drawing::size from the xtd::drawing::point::x and xtd::drawing::point::y values of the specified xtd::drawing::point.

subtract() [2/2]

static point xtd::drawing::point::subtract ( const point &  pt1, const point &  pt2  )

staticnoexcept

Returns the result of subtracting specified xtd::drawing::point from the specified xtd::drawing::point.

Parameters

pt1	The xtd::drawing::point to be subtracted from.
pt2	The xtd::drawing::point to subtract from the xtd::drawing::point.

Returns

The xtd::drawing::point that is the result of the subtraction operation.

operator+() [1/2]

point xtd::drawing::point::operator+ ( const size &  sz ) const

noexcept

Translates a xtd::drawing::point by a given xtd::drawing::size.

Parameters

sz	A xtd::drawing::size that specifies the pair of numbers to add to the coordinates of this xtd::drawing::point.

Returns

The translated xtd::drawing::point.

operator+() [2/2]

point xtd::drawing::point::operator+ ( const point &  pt ) const

noexcept

Translates a xtd::drawing::point by a given xtd::drawing::point.

Parameters

pt	A xtd::drawing::point that specifies the pair of numbers to add to the coordinates of this xtd::drawing::point.

Returns

The translated xtd::drawing::point.

operator+=() [1/2]

point & xtd::drawing::point::operator+= ( const size &  sz )

noexcept

Translates a xtd::drawing::point by a given xtd::drawing::size.

Parameters

sz	A xtd::drawing::size that specifies the pair of numbers to add to the coordinates of this xtd::drawing::point.

Returns

The translated xtd::drawing::point.

operator+=() [2/2]

point & xtd::drawing::point::operator+= ( const point &  pt )

noexcept

Translates a xtd::drawing::point by a given xtd::drawing::point.

Parameters

pt	A xtd::drawing::point that specifies the pair of numbers to add to the coordinates of this xtd::drawing::point.

Returns

The translated xtd::drawing::point.

operator-() [1/2]

point xtd::drawing::point::operator- ( const size &  sz ) const

noexcept

Translates a xtd::drawing::point by the negative of a given xtd::drawing::size.

Parameters

sz	A xtd::drawing::size that specifies the pair of numbers to subtract from the coordinates of this xtd::drawing::point.

Returns

A xtd::drawing::point structure that is translated by the negative of a given xtd::drawing::size structure.

operator-() [2/2]

point xtd::drawing::point::operator- ( const point &  pt ) const

noexcept

Translates a xtd::drawing::point by the negative of a given xtd::drawing::point.

Parameters

pt	A xtd::drawing::point that specifies the pair of numbers to subtract from the coordinates of this xtd::drawing::point.

Returns

A xtd::drawing::point structure that is translated by the negative of a given xtd::drawing::size structure.

operator-=() [1/2]

point & xtd::drawing::point::operator-= ( const size &  sz )

noexcept

Translates a xtd::drawing::point by the negative of a given xtd::drawing::size.

Parameters

sz	A xtd::drawing::size that specifies the pair of numbers to subtract from the coordinates of this xtd::drawing::point.

Returns

The translated xtd::drawing::point.

operator-=() [2/2]

point & xtd::drawing::point::operator-= ( const point &  pt )

noexcept

Translates a xtd::drawing::point by the negative of a given xtd::drawing::point.

Parameters

pt	A xtd::drawing::point that specifies the pair of numbers to subtract from the coordinates of this xtd::drawing::point.

Returns

The translated xtd::drawing::point.

equals() [1/2]

virtual bool xtd::object::equals ( const object &  obj ) const

virtualnoexcept

Determines whether the specified object is equal to the current object.

Parameters

obj	The object to compare with the current object.

Returns

true if the specified object is equal to the current object. otherwise, false.

Examples

The following code example compares the current instance with another object.

#include <xtd/console>
 
using namespace xtd;
 
auto main() -> int {
  auto object1 = new_ptr<object>();
  auto object2 = new_ptr<object>();
  
  auto object3 = object2;
  console::write_line(object1->equals(*object3));
  console::write_line(*object1 == *object3);
  object3 = object1;
  console::write_line(object1->equals(*object3));
  console::write_line(*object1 == *object3);
}
 
// This code produces the following output :
//
// false
// false
// true
// true

Reimplemented from xtd::object.

equals() [2/2]

template<typename object_a_t , typename object_b_t >

static bool xtd::object::equals ( const object_a_t &  object_a, const object_b_t &  object_b  )

inlinestaticnoexcept

Determines whether the specified object instances are considered equal.

Parameters

object_a	The first object to compare.
object_b	The second object to compare.

Returns

true if object_a is the same instance as object_b or if both are null references or if object_a(object_b) returns true. otherwise, false.

Examples

The following code example compares different objects.

#include <xtd/console>
 
using namespace xtd;
 
auto main() -> int {
  string s1 = "Tom";
  string s2 = "Carol";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
  
  s1 = "Tom";
  s2 = "Tom";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
  
  s1 = "";
  s2 = "Tom";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
  
  s1 = "Carol";
  s2 = "";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
  
  s1 = "";
  s2 = "";
  console::write_line("object::equals(\"{0}\", \"{1}\") => {2}", s1, s2, object::equals(s1, s2));
}
 
// This code produces the following output :
//
// object::equals("Tom", "Carol") => false
// object::equals("Tom", "Tom") => true
// object::equals("", "Tom") => false
// object::equals("Carol", "") => false
// object::equals("", "") => true

Member Data Documentation

empty

const point xtd::drawing::point::empty

static

Represents a xtd::drawing::point that has xtd::drawing::point::x and xtd::drawing::point::y values set to zero.

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

• xtd.drawing/include/xtd/drawing/point.hpp