Represents a 32-bit INTERNAL pixel with premultiplied alpha, and can perform compositing operations with it. More...
Public Types | |
enum | { indexA = 3, indexR = 0, indexG = 1, indexB = 2 } |
The indexes of the different components in the byte layout of this type of colour. More... | |
Public Member Functions | |
PixelARGB () noexcept=default | |
Creates a pixel without defining its colour. More... | |
PixelARGB (uint8 a, uint8 r, uint8 g, uint8 b) noexcept | |
forcedinline uint32 | getNativeARGB () const noexcept |
Returns a uint32 which represents the pixel in a platform dependent format. More... | |
forcedinline uint32 | getInARGBMaskOrder () const noexcept |
Returns a uint32 which will be in argb order as if constructed with the following mask operation ((alpha << 24) | (red << 16) | (green << 8) | blue). More... | |
uint32 | getInARGBMemoryOrder () const noexcept |
Returns a uint32 which when written to memory, will be in the order a, r, g, b. More... | |
forcedinline uint32 | getEvenBytes () const noexcept |
Return channels with an even index and insert zero bytes between them. More... | |
forcedinline uint32 | getOddBytes () const noexcept |
Return channels with an odd index and insert zero bytes between them. More... | |
forcedinline uint8 | getAlpha () const noexcept |
forcedinline uint8 | getRed () const noexcept |
forcedinline uint8 | getGreen () const noexcept |
forcedinline uint8 | getBlue () const noexcept |
template<class Pixel > | |
forcedinline void | set (const Pixel &src) noexcept |
Copies another pixel colour over this one. More... | |
void | setARGB (uint8 a, uint8 r, uint8 g, uint8 b) noexcept |
Sets the pixel's colour from individual components. More... | |
template<class Pixel > | |
forcedinline void | blend (const Pixel &src) noexcept |
Blends another pixel onto this one. More... | |
forcedinline void | blend (PixelRGB src) noexcept |
Blends another pixel onto this one. More... | |
template<class Pixel > | |
forcedinline void | blend (const Pixel &src, uint32 extraAlpha) noexcept |
Blends another pixel onto this one, applying an extra multiplier to its opacity. More... | |
template<class Pixel > | |
forcedinline void | tween (const Pixel &src, uint32 amount) noexcept |
Blends another pixel with this one, creating a colour that is somewhere between the two, as specified by the amount. More... | |
forcedinline void | setAlpha (uint8 newAlpha) noexcept |
Replaces the colour's alpha value with another one. More... | |
forcedinline void | multiplyAlpha (int multiplier) noexcept |
Multiplies the colour's alpha value with another one. More... | |
forcedinline void | multiplyAlpha (float multiplier) noexcept |
PixelARGB | getUnpremultiplied () const noexcept |
forcedinline void | premultiply () noexcept |
Premultiplies the pixel's RGB values by its alpha. More... | |
forcedinline void | unpremultiply () noexcept |
Unpremultiplies the pixel's RGB values. More... | |
forcedinline void | desaturate () noexcept |
Represents a 32-bit INTERNAL pixel with premultiplied alpha, and can perform compositing operations with it.
This is used internally by the imaging classes.
anonymous enum |
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defaultnoexcept |
Creates a pixel without defining its colour.
References gl::a, gl::b, gl::components, gl::g, and gl::r.
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noexcept |
Returns a uint32 which represents the pixel in a platform dependent format.
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noexcept |
Returns a uint32 which will be in argb order as if constructed with the following mask operation ((alpha << 24) | (red << 16) | (green << 8) | blue).
References gl::components.
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noexcept |
Returns a uint32 which when written to memory, will be in the order a, r, g, b.
In other words, if the return-value is read as a uint8 array then the elements will be in the order of a, r, g, b
References gl::components.
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noexcept |
Return channels with an even index and insert zero bytes between them.
This is useful for blending operations. The exact channels which are returned is platform dependent.
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noexcept |
Return channels with an odd index and insert zero bytes between them.
This is useful for blending operations. The exact channels which are returned is platform dependent.
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noexcept |
References gl::components.
Referenced by Colour::getAlpha().
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noexcept |
References gl::components.
Referenced by Colour::getRed().
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noexcept |
References gl::components.
Referenced by Colour::getGreen().
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noexcept |
References gl::components.
Referenced by Colour::getBlue().
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noexcept |
Copies another pixel colour over this one.
This doesn't blend it - this colour is simply replaced by the other one.
References gl::src.
Sets the pixel's colour from individual components.
References gl::a, gl::b, gl::components, gl::g, and gl::r.
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noexcept |
Blends another pixel onto this one.
This takes into account the opacity of the pixel being overlaid, and blends it accordingly.
References gl::alpha, clampPixelComponents(), maskPixelComponents(), and gl::src.
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noexcept |
Blends another pixel onto this one, applying an extra multiplier to its opacity.
The opacity of the pixel being overlaid is scaled by the extraAlpha factor before being used, so this can blend semi-transparently from a PixelRGB argument.
References gl::alpha, clampPixelComponents(), maskPixelComponents(), and gl::src.
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noexcept |
Blends another pixel with this one, creating a colour that is somewhere between the two, as specified by the amount.
References gl::src.
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noexcept |
Replaces the colour's alpha value with another one.
References gl::components.
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noexcept |
Multiplies the colour's alpha value with another one.
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noexcept |
References gl::f.
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noexcept |
Premultiplies the pixel's RGB values by its alpha.
References gl::alpha, and gl::components.
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noexcept |
Unpremultiplies the pixel's RGB values.
References gl::alpha, gl::components, and jmin().
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noexcept |
References gl::components, and int().
uint32 PixelARGB::internal |
Components PixelARGB::components |