Safe Haskell	None
Language	Haskell2010

GEGL.Buffer.BufferIterator

Description

Module for iterating over buffers

Synopsis

Documentation

newtype GeglBufferIterator #

Constructors

GeglBufferIterator GeglBufferIteratorDummy

gegl_buffer_iterator_new #

Arguments

:: GeglBuffer	Buffer to draw data from
-> GeglRectangle	Rectangle to iterate over
-> PixelFormat	Format to process pixel data in
-> GeglAccessMode	Access mode to pixel data
-> GeglAbyssPolicy	Abyss policy for pixel data
-> IO GeglBufferIterator

Create a new iterator over a specified area on a buffer.

gegl_buffer_iterator_next #

Arguments

:: GeglBufferIterator	Iterator to fill with data
-> IO Bool

This function fills the GeglBufferIterator with its appropriate data and returns True as long as there is something to iterate over. Upon returning False the iterator is invalidated.

data Pixel #

Data type to represent Pixels in iteration.

Constructors

Pixel
Fields pixelX :: Int X coordinate pixelY :: Int Y coordinate pixelData :: (ComponentValue, ComponentValue, ComponentValue, ComponentValue) Colour data

data ComponentValue #

Container type for component values

Constructors

CVhalf CUShort
CVfloat CFloat
CVdouble CDouble
CVu8 CUChar
CVu15 CUShort
CVu16 CUShort
CVu32 CUInt
CVa8 CUChar
CVrgb24 CUChar
CVrgba32 CUChar

pixelMap #

Arguments

:: GeglBuffer	Terget buffer
-> GeglRectangle	Rectangle to iterate over
-> PixelFormat	Pixel format
-> GeglAccessMode	Access mode to pixel data
-> GeglAbyssPolicy	Abbyss policy for pixel data
-> (Pixel -> Pixel)	Function to apply to each pixel
-> IO ()

Simple iteration over a rectangle section of a buffer. Generates its own iterator.

pixelPoke #

Arguments

:: GeglBuffer	Terget buffer
-> GeglRectangle	Rectangle to iterate over
-> PixelFormat	Pixel format
-> GeglAccessMode	Access mode to pixel data
-> GeglAbyssPolicy	Abbyss policy for pixel data
-> ((Int, Int) -> Pixel)	Function to apply to each pixel
-> IO ()

Simple iteration over a rectangle section of a buffer. Generates its own iterator.