Specialized shape representing a circle. More...

#include <CircleShape.hpp>

Inheritance diagram for sf::CircleShape:

Public Member Functions
	CircleShape (float radius=0, unsigned int pointCount=30)
	Default constructor.

void	setRadius (float radius)
	Set the radius of the circle.

float	getRadius () const
	Get the radius of the circle.

void	setPointCount (unsigned int count)
	Set the number of points of the circle.

virtual unsigned int	getPointCount () const
	Get the number of points of the shape.

virtual Vector2f	getPoint (unsigned int index) const
	Get a point of the shape.

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 (const Color &color)
	Set the fill color of the shape.

void	setOutlineColor (const Color &color)
	Set the outline color of the shape.

void	setOutlineThickness (float thickness)
	Set the thickness of the shape's outline.

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.

const Color &	getFillColor () const
	Get the fill color of the shape.

const Color &	getOutlineColor () const
	Get the outline color of the shape.

float	getOutlineThickness () const
	Get the outline thickness of the shape.

FloatRect	getLocalBounds () const
	Get the local bounding rectangle of the entity.

FloatRect	getGlobalBounds () const
	Get the global bounding rectangle of the entity.

void	setPosition (float x, float y)
	set the position of the object

void	setPosition (const Vector2f &position)
	set the position of the object

void	setRotation (float angle)
	set the orientation of the object

void	setScale (float factorX, float factorY)
	set the scale factors of the object

void	setScale (const Vector2f &factors)
	set the scale factors of the object

void	setOrigin (float x, float y)
	set the local origin of the object

void	setOrigin (const Vector2f &origin)
	set the local origin of the object

const Vector2f &	getPosition () const
	get the position of the object

float	getRotation () const
	get the orientation of the object

const Vector2f &	getScale () const
	get the current scale of the object

const Vector2f &	getOrigin () const
	get the local origin of the object

void	move (float offsetX, float offsetY)
	Move the object by a given offset.

void	move (const Vector2f &offset)
	Move the object by a given offset.

void	rotate (float angle)
	Rotate the object.

void	scale (float factorX, float factorY)
	Scale the object.

void	scale (const 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 circle.

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

Usage example:

sf::CircleShape circle;
circle.setRadius(150);
circle.setOutlineColor(sf::Color::Red);
circle.setOutlineThickness(5);
circle.setPosition(10, 20);
...
window.draw(circle);

Since the graphics card can't draw perfect circles, we have to fake them with multiple triangles connected to each other. The "points count" property of sf::CircleShape defines how many of these triangles to use, and therefore defines the quality of the circle.

The number of points can also be used for another purpose; with small numbers you can create any regular polygon shape: equilateral triangle, square, pentagon, hexagon, ...

See Also: sf::Shape, sf::RectangleShape, sf::ConvexShape

Definition at line 41 of file CircleShape.hpp.

Constructor & Destructor Documentation

sf::CircleShape::CircleShape	(	float	radius = `0`,
		unsigned int	pointCount = `30`
	)

explicit

Default constructor.

Parameters

radius	Radius of the circle
pointCount	Number of points composing the circle

Member Function Documentation

const Color& sf::Shape::getFillColor ( ) const

inherited

Get the fill color of the shape.

Returns: Fill color of the shape

See Also: setFillColor

FloatRect sf::Shape::getGlobalBounds ( ) const

inherited

Get the global bounding rectangle of the entity.

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

Returns: Global bounding rectangle of the entity

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

inherited

get the inverse of the combined transform of the object

Returns: Inverse of the combined transformations applied to the object

See Also: getTransform

FloatRect sf::Shape::getLocalBounds ( ) const

inherited

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

const Vector2f& sf::Transformable::getOrigin ( ) const

inherited

get the local origin of the object

Returns: Current origin

See Also: setOrigin

const Color& sf::Shape::getOutlineColor ( ) const

inherited

Get the outline color of the shape.

Returns: Outline color of the shape

See Also: setOutlineColor

float sf::Shape::getOutlineThickness ( ) const

inherited

Get the outline thickness of the shape.

Returns: Outline thickness of the shape

See Also: setOutlineThickness

virtual Vector2f sf::CircleShape::getPoint ( unsigned int index ) const

virtual

Get a point of the shape.

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: Index-th point of the shape

Implements sf::Shape.

virtual unsigned int sf::CircleShape::getPointCount ( ) const

virtual

Get the number of points of the shape.

Returns: Number of points of the shape

See Also: setPointCount

Implements sf::Shape.

const Vector2f& sf::Transformable::getPosition ( ) const

inherited

get the position of the object

Returns: Current position

See Also: setPosition

float sf::CircleShape::getRadius ( ) const

Get the radius of the circle.

Returns: Radius of the circle

See Also: setRadius

float sf::Transformable::getRotation ( ) const

inherited

get the orientation of the object

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

Returns: Current rotation, in degrees

See Also: setRotation

const Vector2f& sf::Transformable::getScale ( ) const

inherited

get the current scale of the object

Returns: Current scale factors

See Also: setScale

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

inherited

Get the source texture of the shape.

If the shape has no source texture, a NULL pointer 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

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

inherited

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

Returns: Texture rectangle of the shape

See Also: setTextureRect

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

inherited

get the combined transform of the object

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

See Also: getInverseTransform

void sf::Transformable::move	(	float	offsetX,
		float	offsetY
	)

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:

sf::Vector2f pos = object.getPosition();

object.setPosition(pos.x + offsetX, pos.y + offsetY);

Parameters

offsetX	X offset
offsetY	Y offset

See Also: setPosition

void sf::Transformable::move ( const 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);

Parameters

offset Offset

See Also: setPosition

void sf::Transformable::rotate ( float 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);

Parameters

angle Angle of rotation, in degrees

void sf::Transformable::scale	(	float	factorX,
		float	factorY
	)

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 * factorX, scale.y * factorY);

Parameters

factorX	Horizontal scale factor
factorY	Vertical scale factor

See Also: setScale

void sf::Transformable::scale ( const 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);

Parameters

factor Scale factors

See Also: setScale

void sf::Shape::setFillColor ( const 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

void sf::Transformable::setOrigin	(	float	x,
		float	y
	)

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

x	X coordinate of the new origin
y	Y coordinate of the new origin

See Also: getOrigin

void sf::Transformable::setOrigin ( const 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

void sf::Shape::setOutlineColor ( const 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

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

void sf::CircleShape::setPointCount ( unsigned int count )

Set the number of points of the circle.

Parameters

count New number of points of the circle

See Also: getPointCount

void sf::Transformable::setPosition	(	float	x,
		float	y
	)

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).

Parameters

x	X coordinate of the new position
y	Y coordinate of the new position

See Also: move, getPosition

void sf::Transformable::setPosition ( const 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).

Parameters

position New position

See Also: move, getPosition

void sf::CircleShape::setRadius ( float radius )

Set the radius of the circle.

Parameters

radius New radius of the circle

See Also: getRadius

void sf::Transformable::setRotation ( float 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, in degrees

See Also: rotate, getRotation

void sf::Transformable::setScale	(	float	factorX,
		float	factorY
	)

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

factorX	New horizontal scale factor
factorY	New vertical scale factor

See Also: scale, getScale

void sf::Transformable::setScale ( const 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

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 behaviour is undefined. texture can be NULL 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

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

void sf::Shape::update ( )

protectedinherited

Recompute the internal geometry of the shape.

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

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

CircleShape.hpp

Documentation of SFML 2.1

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation