Specialized shape representing a convex polygon. More...

#include <D:/private/SFML/SFML/include/SFML/Graphics/ConvexShape.hpp>

Inheritance diagram for sf::ConvexShape:

Public Member Functions
	ConvexShape (std::size_t pointCount=0)
	Default constructor.
void	setPointCount (std::size_t count)
	Set the number of points of the polygon.
std::size_t	getPointCount () const override
	Get the number of points of the polygon.
void	setPoint (std::size_t index, Vector2f point)
	Set the position of a point.
Vector2f	getPoint (std::size_t index) const override
	Get the position of a point.
void	setTexture (const Texture *texture, bool resetRect=false)
	Change the source texture of the shape.
void	setTextureRect (const IntRect &rect)
	Set the sub-rectangle of the texture that the shape will display.
void	setFillColor (Color color)
	Set the fill color of the shape.
void	setOutlineColor (Color color)
	Set the outline color of the shape.
void	setOutlineThickness (float thickness)
	Set the thickness of the shape's outline.
void	setMiterLimit (float miterLimit)
	Set the limit on the ratio between miter length and outline thickness.
const Texture *	getTexture () const
	Get the source texture of the shape.
const IntRect &	getTextureRect () const
	Get the sub-rectangle of the texture displayed by the shape.
Color	getFillColor () const
	Get the fill color of the shape.
Color	getOutlineColor () const
	Get the outline color of the shape.
float	getOutlineThickness () const
	Get the outline thickness of the shape.
float	getMiterLimit () const
	Get the limit on the ratio between miter length and outline thickness.
virtual Vector2f	getGeometricCenter () const
	Get the geometric center of the shape.
FloatRect	getLocalBounds () const
	Get the local bounding rectangle of the entity.
FloatRect	getGlobalBounds () const
	Get the global (non-minimal) bounding rectangle of the entity.
void	setPosition (Vector2f position)
	set the position of the object
void	setRotation (Angle angle)
	set the orientation of the object
void	setScale (Vector2f factors)
	set the scale factors of the object
void	setOrigin (Vector2f origin)
	set the local origin of the object
Vector2f	getPosition () const
	get the position of the object
Angle	getRotation () const
	get the orientation of the object
Vector2f	getScale () const
	get the current scale of the object
Vector2f	getOrigin () const
	get the local origin of the object
void	move (Vector2f offset)
	Move the object by a given offset.
void	rotate (Angle angle)
	Rotate the object.
void	scale (Vector2f factor)
	Scale the object.
const Transform &	getTransform () const
	get the combined transform of the object
const Transform &	getInverseTransform () const
	get the inverse of the combined transform of the object

Protected Member Functions
void	update ()
	Recompute the internal geometry of the shape.

Detailed Description

Specialized shape representing a convex polygon.

This class inherits all the functions of sf::Transformable (position, rotation, scale, bounds, ...) as well as the functions of sf::Shape (outline, color, texture, ...).

It is important to keep in mind that a convex shape must always be... convex, otherwise it may not be drawn correctly. Moreover, the points must be defined in order; using a random order would result in an incorrect shape.

Usage example:

sf::ConvexShape polygon;
polygon.setPointCount(3);
polygon.setPoint(0, sf::Vector2f(0, 0));
polygon.setPoint(1, sf::Vector2f(0, 10));
polygon.setPoint(2, sf::Vector2f(25, 5));
polygon.setOutlineColor(sf::Color::Red);
polygon.setOutlineThickness(5);
polygon.setPosition({10, 20});
...
window.draw(polygon);

See also: sf::Shape, sf::RectangleShape, sf::CircleShape

Definition at line 45 of file ConvexShape.hpp.

Constructor & Destructor Documentation

◆ ConvexShape()

sf::ConvexShape::ConvexShape ( std::size_t pointCount = 0 )

explicit

Default constructor.

Parameters

pointCount Number of points of the polygon

Member Function Documentation

◆ getFillColor()

Color sf::Shape::getFillColor ( ) const

nodiscardinherited

Get the fill color of the shape.

Returns: Fill color of the shape

See also: setFillColor

◆ getGeometricCenter()

virtual Vector2f sf::Shape::getGeometricCenter ( ) const

nodiscardvirtualinherited

Get the geometric center of the shape.

The returned point is in local coordinates, that is, the shape's transforms (position, rotation, scale) are not taken into account.

Returns: The geometric center of the shape

Reimplemented in sf::CircleShape, and sf::RectangleShape.

◆ getGlobalBounds()

FloatRect sf::Shape::getGlobalBounds ( ) const

nodiscardinherited

Get the global (non-minimal) bounding rectangle of the entity.

The returned rectangle is in global coordinates, which means that it takes into account the transformations (translation, rotation, scale, ...) that are applied to the entity. In other words, this function returns the bounds of the shape in the global 2D world's coordinate system.

This function does not necessarily return the minimal bounding rectangle. It merely ensures that the returned rectangle covers all the vertices (but possibly more). This allows for a fast approximation of the bounds as a first check; you may want to use more precise checks on top of that.

Returns: Global bounding rectangle of the entity

◆ getInverseTransform()

const Transform & sf::Transformable::getInverseTransform ( ) const

nodiscardinherited

get the inverse of the combined transform of the object

Returns: Inverse of the combined transformations applied to the object

See also: getTransform

◆ getLocalBounds()

FloatRect sf::Shape::getLocalBounds ( ) const

nodiscardinherited

Get the local bounding rectangle of the entity.

The returned rectangle is in local coordinates, which means that it ignores the transformations (translation, rotation, scale, ...) that are applied to the entity. In other words, this function returns the bounds of the entity in the entity's coordinate system.

Returns: Local bounding rectangle of the entity

◆ getMiterLimit()

float sf::Shape::getMiterLimit ( ) const

nodiscardinherited

Get the limit on the ratio between miter length and outline thickness.

Returns: Limit on the ratio between miter length and outline thickness

See also: setMiterLimit

◆ getOrigin()

Vector2f sf::Transformable::getOrigin ( ) const

nodiscardinherited

get the local origin of the object

Returns: Current origin

See also: setOrigin

◆ getOutlineColor()

Color sf::Shape::getOutlineColor ( ) const

nodiscardinherited

Get the outline color of the shape.

Returns: Outline color of the shape

See also: setOutlineColor

◆ getOutlineThickness()

float sf::Shape::getOutlineThickness ( ) const

nodiscardinherited

Get the outline thickness of the shape.

Returns: Outline thickness of the shape

See also: setOutlineThickness

◆ getPoint()

Vector2f sf::ConvexShape::getPoint ( std::size_t index ) const

nodiscardoverridevirtual

Get the position of a point.

The returned point is in local coordinates, that is, the shape's transforms (position, rotation, scale) are not taken into account. The result is undefined if index is out of the valid range.

Parameters

index Index of the point to get, in range [0 .. getPointCount() - 1]

Returns: Position of the index-th point of the polygon

See also: setPoint

Implements sf::Shape.

◆ getPointCount()

std::size_t sf::ConvexShape::getPointCount ( ) const

nodiscardoverridevirtual

Get the number of points of the polygon.

Returns: Number of points of the polygon

See also: setPointCount

Implements sf::Shape.

◆ getPosition()

Vector2f sf::Transformable::getPosition ( ) const

nodiscardinherited

get the position of the object

Returns: Current position

See also: setPosition

◆ getRotation()

Angle sf::Transformable::getRotation ( ) const

nodiscardinherited

get the orientation of the object

The rotation is always in the range [0, 360].

Returns: Current rotation

See also: setRotation

◆ getScale()

Vector2f sf::Transformable::getScale ( ) const

nodiscardinherited

get the current scale of the object

Returns: Current scale factors

See also: setScale

◆ getTexture()

const Texture * sf::Shape::getTexture ( ) const

nodiscardinherited

Get the source texture of the shape.

If the shape has no source texture, a nullptr is returned. The returned pointer is const, which means that you can't modify the texture when you retrieve it with this function.

Returns: Pointer to the shape's texture

See also: setTexture

◆ getTextureRect()

const IntRect & sf::Shape::getTextureRect ( ) const

nodiscardinherited

Get the sub-rectangle of the texture displayed by the shape.

Returns: Texture rectangle of the shape

See also: setTextureRect

◆ getTransform()

const Transform & sf::Transformable::getTransform ( ) const

nodiscardinherited

get the combined transform of the object

Returns: Transform combining the position/rotation/scale/origin of the object

See also: getInverseTransform

◆ move()

void sf::Transformable::move ( Vector2f offset )

inherited

Move the object by a given offset.

This function adds to the current position of the object, unlike setPosition which overwrites it. Thus, it is equivalent to the following code:

object.setPosition(object.getPosition() + offset);

sf::Transformable::getPosition

Vector2f getPosition() const

get the position of the object

Parameters

offset Offset

See also: setPosition

◆ rotate()

void sf::Transformable::rotate ( Angle angle )

inherited

Rotate the object.

This function adds to the current rotation of the object, unlike setRotation which overwrites it. Thus, it is equivalent to the following code:

object.setRotation(object.getRotation() + angle);

sf::Transformable::getRotation

Angle getRotation() const

get the orientation of the object

Parameters

angle Angle of rotation

◆ scale()

void sf::Transformable::scale ( Vector2f factor )

inherited

Scale the object.

This function multiplies the current scale of the object, unlike setScale which overwrites it. Thus, it is equivalent to the following code:

sf::Vector2f scale = object.getScale();

object.setScale(scale.x * factor.x, scale.y * factor.y);

sf::Transformable::scale

void scale(Vector2f factor)

Scale the object.

Parameters

factor Scale factors

See also: setScale

◆ setFillColor()

void sf::Shape::setFillColor ( Color color )

inherited

Set the fill color of the shape.

This color is modulated (multiplied) with the shape's texture if any. It can be used to colorize the shape, or change its global opacity. You can use sf::Color::Transparent to make the inside of the shape transparent, and have the outline alone. By default, the shape's fill color is opaque white.

Parameters

color New color of the shape

See also: getFillColor, setOutlineColor

◆ setMiterLimit()

void sf::Shape::setMiterLimit ( float miterLimit )

inherited

Set the limit on the ratio between miter length and outline thickness.

Outline segments around each shape corner are joined either with a miter or a bevel join.

A miter join is formed by extending outline segments until they intersect. The distance between the point of intersection and the shape's corner is the miter length.
A bevel join is formed by connecting outline segments with a straight line perpendicular to the corner's bissector.

The miter limit is used to determine whether ouline segments around a corner are joined with a bevel or a miter. When the ratio between the miter length and outline thickness exceeds the miter limit, a bevel is used instead of a miter.

The miter limit is linked to the maximum inner angle of a corner below which a bevel is used by the following formula:

miterLimit = 1 / sin(angle / 2)

The miter limit must be greater than or equal to 1. By default, the miter limit is 10.

Parameters

miterLimit New miter limit

See also: getMiterLimit

◆ setOrigin()

void sf::Transformable::setOrigin ( Vector2f origin )

inherited

set the local origin of the object

The origin of an object defines the center point for all transformations (position, scale, rotation). The coordinates of this point must be relative to the top-left corner of the object, and ignore all transformations (position, scale, rotation). The default origin of a transformable object is (0, 0).

Parameters

origin New origin

See also: getOrigin

◆ setOutlineColor()

void sf::Shape::setOutlineColor ( Color color )

inherited

Set the outline color of the shape.

By default, the shape's outline color is opaque white.

Parameters

color New outline color of the shape

See also: getOutlineColor, setFillColor

◆ setOutlineThickness()

void sf::Shape::setOutlineThickness ( float thickness )

inherited

Set the thickness of the shape's outline.

Note that negative values are allowed (so that the outline expands towards the center of the shape), and using zero disables the outline. By default, the outline thickness is 0.

Parameters

thickness New outline thickness

See also: getOutlineThickness

◆ setPoint()

void sf::ConvexShape::setPoint	(	std::size_t	index,
		Vector2f	point )

Set the position of a point.

Don't forget that the shape must be convex and the order of points matters. Points should not overlap. This applies to rendering; it is explicitly allowed to temporarily have non-convex or degenerate shapes when not drawn (e.g. during shape initialization).

Point count must be specified beforehand. The behavior is undefined if index is greater than or equal to getPointCount.

Parameters

index	Index of the point to change, in range [0 .. getPointCount() - 1]
point	New position of the point

See also: getPoint

◆ setPointCount()

void sf::ConvexShape::setPointCount ( std::size_t count )

Set the number of points of the polygon.

For the shape to be rendered as expected, count must be greater or equal to 3.

Parameters

count New number of points of the polygon

See also: getPointCount

◆ setPosition()

void sf::Transformable::setPosition ( Vector2f position )

inherited

set the position of the object

This function completely overwrites the previous position. See the move function to apply an offset based on the previous position instead. The default position of a transformable object is (0, 0).

Note that sf::Text may appear offset when positioned. This is because its local bounds are influenced by font metrics (e.g. tallest characters) to consistently align with the text's baseline. As such the getGlobalBounds() position may not match the position you set.

To account for this offset, the local bounds need to be considered. Either by including it in the position calculation:

text.setPosition(position - text.getLocalBounds().position);

Or by adjusting the text's origin:

text.setOrigin(text.getLocalBounds().position);

text.setPosition(position);

Parameters

position New position

See also: move, getPosition

◆ setRotation()

void sf::Transformable::setRotation ( Angle angle )

inherited

set the orientation of the object

This function completely overwrites the previous rotation. See the rotate function to add an angle based on the previous rotation instead. The default rotation of a transformable object is 0.

Parameters

angle New rotation

See also: rotate, getRotation

◆ setScale()

void sf::Transformable::setScale ( Vector2f factors )

inherited

set the scale factors of the object

This function completely overwrites the previous scale. See the scale function to add a factor based on the previous scale instead. The default scale of a transformable object is (1, 1).

Parameters

factors New scale factors

See also: scale, getScale

◆ setTexture()

void sf::Shape::setTexture	(	const Texture *	texture,
		bool	resetRect = false )

inherited

Change the source texture of the shape.

The texture argument refers to a texture that must exist as long as the shape uses it. Indeed, the shape doesn't store its own copy of the texture, but rather keeps a pointer to the one that you passed to this function. If the source texture is destroyed and the shape tries to use it, the behavior is undefined. texture can be a null pointer to disable texturing. If resetRect is true, the TextureRect property of the shape is automatically adjusted to the size of the new texture. If it is false, the texture rect is left unchanged.

Parameters

texture	New texture
resetRect	Should the texture rect be reset to the size of the new texture?

See also: getTexture, setTextureRect

◆ setTextureRect()

void sf::Shape::setTextureRect ( const IntRect & rect )

inherited

Set the sub-rectangle of the texture that the shape will display.

The texture rect is useful when you don't want to display the whole texture, but rather a part of it. By default, the texture rect covers the entire texture.

Parameters

rect	Rectangle defining the region of the texture to display

See also: getTextureRect, setTexture

◆ update()

void sf::Shape::update ( )

protectedinherited

Recompute the internal geometry of the shape.

This function must be called by the derived class every time the shape's points change (i.e. the result of either getPointCount or getPoint is different).

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

ConvexShape.hpp

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ ConvexShape()

Member Function Documentation

◆ getFillColor()

◆ getGeometricCenter()

◆ getGlobalBounds()

◆ getInverseTransform()

◆ getLocalBounds()

◆ getMiterLimit()

◆ getOrigin()

◆ getOutlineColor()

◆ getOutlineThickness()

◆ getPoint()

◆ getPointCount()

◆ getPosition()

◆ getRotation()

◆ getScale()

◆ getTexture()

◆ getTextureRect()

◆ getTransform()

◆ move()

◆ rotate()

◆ scale()

◆ setFillColor()

◆ setMiterLimit()

◆ setOrigin()

◆ setOutlineColor()

◆ setOutlineThickness()

◆ setPoint()

◆ setPointCount()

◆ setPosition()

◆ setRotation()

◆ setScale()

◆ setTexture()

◆ setTextureRect()

◆ update()