Documentation de SFML 2.6.2
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Public Member Functions |
Public Attributes |
Static Public Attributes |
Related Symbols |
List of all members
sf::Color Class Reference
Utility class for manipulating RGBA colors. More...
#include <SFML/Graphics/Color.hpp>
Public Member Functions | |
| Color () | |
| Default constructor. | |
| Color (Uint8 red, Uint8 green, Uint8 blue, Uint8 alpha=255) | |
| Construct the color from its 4 RGBA components. | |
| Color (Uint32 color) | |
| Construct the color from 32-bit unsigned integer. | |
| Uint32 | toInteger () const |
| Retrieve the color as a 32-bit unsigned integer. | |
Public Attributes | |
| Uint8 | r |
| Red component. | |
| Uint8 | g |
| Green component. | |
| Uint8 | b |
| Blue component. | |
| Uint8 | a |
| Alpha (opacity) component. | |
Static Public Attributes | |
| static const Color | Black |
| Black predefined color. | |
| static const Color | White |
| White predefined color. | |
| static const Color | Red |
| Red predefined color. | |
| static const Color | Green |
| Green predefined color. | |
| static const Color | Blue |
| Blue predefined color. | |
| static const Color | Yellow |
| Yellow predefined color. | |
| static const Color | Magenta |
| Magenta predefined color. | |
| static const Color | Cyan |
| Cyan predefined color. | |
| static const Color | Transparent |
| Transparent (black) predefined color. | |
Related Symbols | |
(Note that these are not member symbols.) | |
| bool | operator== (const Color &left, const Color &right) |
| Overload of the == operator. | |
| bool | operator!= (const Color &left, const Color &right) |
| Overload of the != operator. | |
| Color | operator+ (const Color &left, const Color &right) |
| Overload of the binary + operator. | |
| Color | operator- (const Color &left, const Color &right) |
| Overload of the binary - operator. | |
| Color | operator* (const Color &left, const Color &right) |
| Overload of the binary * operator. | |
| Color & | operator+= (Color &left, const Color &right) |
| Overload of the binary += operator. | |
| Color & | operator-= (Color &left, const Color &right) |
| Overload of the binary -= operator. | |
| Color & | operator*= (Color &left, const Color &right) |
| Overload of the binary *= operator. | |
Detailed Description
Utility class for manipulating RGBA colors.
sf::Color is a simple color class composed of 4 components:
- Red
- Green
- Blue
- Alpha (opacity)
Each component is a public member, an unsigned integer in the range [0, 255]. Thus, colors can be constructed and manipulated very easily:
sf::Color color(255, 0, 0); // red
color.r = 0; // make it black
color.b = 128; // make it dark blue
The fourth component of colors, named "alpha", represents the opacity of the color. A color with an alpha value of 255 will be fully opaque, while an alpha value of 0 will make a color fully transparent, whatever the value of the other components is.
The most common colors are already defined as static variables:
sf::Color black = sf::Color::Black;
sf::Color white = sf::Color::White;
sf::Color red = sf::Color::Red;
sf::Color green = sf::Color::Green;
sf::Color blue = sf::Color::Blue;
sf::Color yellow = sf::Color::Yellow;
sf::Color magenta = sf::Color::Magenta;
sf::Color cyan = sf::Color::Cyan;
sf::Color transparent = sf::Color::Transparent;
Colors can also be added and modulated (multiplied) using the overloaded operators + and *.
Constructor & Destructor Documentation
◆ Color() [1/3]
| sf::Color::Color | ( | ) |
Default constructor.
Constructs an opaque black color. It is equivalent to sf::Color(0, 0, 0, 255).
◆ Color() [2/3]
| sf::Color::Color | ( | Uint8 | red, |
| Uint8 | green, | ||
| Uint8 | blue, | ||
| Uint8 | alpha = 255 ) |
Construct the color from its 4 RGBA components.
- Parameters
-
red Red component (in the range [0, 255]) green Green component (in the range [0, 255]) blue Blue component (in the range [0, 255]) alpha Alpha (opacity) component (in the range [0, 255])
◆ Color() [3/3]
|
explicit |
Construct the color from 32-bit unsigned integer.
- Parameters
-
color Number containing the RGBA components (in that order)
Member Function Documentation
◆ toInteger()
| Uint32 sf::Color::toInteger | ( | ) | const |
Retrieve the color as a 32-bit unsigned integer.
- Returns
- Color represented as a 32-bit unsigned integer
Friends And Related Symbol Documentation
◆ operator!=()
Overload of the != operator.
This operator compares two colors and check if they are different.
- Parameters
-
left Left operand right Right operand
- Returns
- True if colors are different, false if they are equal
◆ operator*()
Overload of the binary * operator.
This operator returns the component-wise multiplication (also called "modulation") of two colors. Components are then divided by 255 so that the result is still in the range [0, 255].
- Parameters
-
left Left operand right Right operand
- Returns
- Result of left * right
◆ operator*=()
Overload of the binary *= operator.
This operator returns the component-wise multiplication (also called "modulation") of two colors, and assigns the result to the left operand. Components are then divided by 255 so that the result is still in the range [0, 255].
- Parameters
-
left Left operand right Right operand
- Returns
- Reference to left
◆ operator+()
Overload of the binary + operator.
This operator returns the component-wise sum of two colors. Components that exceed 255 are clamped to 255.
- Parameters
-
left Left operand right Right operand
- Returns
- Result of left + right
◆ operator+=()
Overload of the binary += operator.
This operator computes the component-wise sum of two colors, and assigns the result to the left operand. Components that exceed 255 are clamped to 255.
- Parameters
-
left Left operand right Right operand
- Returns
- Reference to left
◆ operator-()
Overload of the binary - operator.
This operator returns the component-wise subtraction of two colors. Components below 0 are clamped to 0.
- Parameters
-
left Left operand right Right operand
- Returns
- Result of left - right
◆ operator-=()
Overload of the binary -= operator.
This operator computes the component-wise subtraction of two colors, and assigns the result to the left operand. Components below 0 are clamped to 0.
- Parameters
-
left Left operand right Right operand
- Returns
- Reference to left
◆ operator==()
Overload of the == operator.
This operator compares two colors and check if they are equal.
- Parameters
-
left Left operand right Right operand
- Returns
- True if colors are equal, false if they are different
Member Data Documentation
◆ a
◆ b
◆ Black
|
static |
◆ Blue
◆ Cyan
◆ g
◆ Green
|
static |
◆ Magenta
|
static |
◆ r
◆ Red
◆ Transparent
|
static |
◆ White
|
static |
◆ Yellow
|
static |
The documentation for this class was generated from the following file: