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. | |
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. | |
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). | |
uint32 | getInARGBMemoryOrder () const noexcept |
Returns a uint32 which when written to memory, will be in the order a, r, g, b. | |
forcedinline uint32 | getEvenBytes () const noexcept |
Return channels with an even index and insert zero bytes between them. | |
forcedinline uint32 | getOddBytes () const noexcept |
Return channels with an odd index and insert zero bytes between them. | |
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. | |
void | setARGB (uint8 a, uint8 r, uint8 g, uint8 b) noexcept |
Sets the pixel's colour from individual components. | |
template<class Pixel> | |
forcedinline void | blend (const Pixel &src) noexcept |
Blends another pixel onto this one. | |
forcedinline void | blend (PixelRGB src) noexcept |
Blends another pixel onto this one. | |
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. | |
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. | |
forcedinline void | setAlpha (uint8 newAlpha) noexcept |
Replaces the colour's alpha value with another one. | |
forcedinline void | multiplyAlpha (int multiplier) noexcept |
Multiplies the colour's alpha value with another one. | |
forcedinline void | multiplyAlpha (float multiplier) noexcept |
PixelARGB | getUnpremultiplied () const noexcept |
forcedinline void | premultiply () noexcept |
Premultiplies the pixel's RGB values by its alpha. | |
forcedinline void | unpremultiply () noexcept |
Unpremultiplies the pixel's RGB values. | |
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.
Referenced by getUnpremultiplied(), and PixelARGB().
References components, and PixelARGB().
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noexcept |
Returns a uint32 which represents the pixel in a platform dependent format.
References forcedinline, and internal.
Referenced by getInARGBMaskOrder().
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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 components, forcedinline, and getNativeARGB().
Referenced by getInARGBMemoryOrder().
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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 components, and getInARGBMaskOrder().
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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.
References forcedinline, and internal.
Referenced by blend(), blend(), multiplyAlpha(), and tween().
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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.
References forcedinline, and internal.
Referenced by blend(), blend(), multiplyAlpha(), and tween().
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noexcept |
References components, and forcedinline.
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noexcept |
References components, and forcedinline.
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noexcept |
References components, and forcedinline.
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noexcept |
References components, and forcedinline.
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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 forcedinline, and internal.
Referenced by blend().
Sets the pixel's colour from individual components.
References components.
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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 clampPixelComponents(), forcedinline, getEvenBytes(), getOddBytes(), internal, and maskPixelComponents().
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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 clampPixelComponents(), forcedinline, getEvenBytes(), getOddBytes(), internal, and maskPixelComponents().
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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 forcedinline, getEvenBytes(), getOddBytes(), and internal.
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noexcept |
Replaces the colour's alpha value with another one.
References components, and forcedinline.
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noexcept |
Multiplies the colour's alpha value with another one.
References forcedinline, getEvenBytes(), getOddBytes(), and internal.
Referenced by multiplyAlpha().
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noexcept |
References forcedinline, and multiplyAlpha().
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noexcept |
References internal, PixelARGB(), and unpremultiply().
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noexcept |
Premultiplies the pixel's RGB values by its alpha.
References components, and forcedinline.
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noexcept |
Unpremultiplies the pixel's RGB values.
References components, forcedinline, and jmin().
Referenced by getUnpremultiplied().
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noexcept |
References components, and forcedinline.
uint32 PixelARGB::internal |
Referenced by blend(), blend(), getEvenBytes(), getNativeARGB(), getOddBytes(), getUnpremultiplied(), multiplyAlpha(), set(), and tween().
Components PixelARGB::components |
Referenced by desaturate(), getAlpha(), getBlue(), getGreen(), getInARGBMaskOrder(), getInARGBMemoryOrder(), getRed(), PixelARGB(), premultiply(), setAlpha(), setARGB(), and unpremultiply().