PHP 클래스 Instafilter\Filter

This holds all of the common things between filters like getting access to the imagemagick instance etc.

공개 메소드들

메소드	설명
__construct ( array $configuration = [] )
apply_filter ( )	You should only call this when you're ready to save, it often overwrites your image a few times (not always though) *
brightness_contrast ( integer $brightness, integer $contrast ) : Filter	Replicate brightness/contrast photoshop function
colorize ( string $color, integer $composition = Imagick::COMPOSITE_MULTIPLY ) : Filter	Replicate Colorize function
curves ( array $points, integer $channel = null ) : Filter	Replicate photoshop's curves function
curves_graph ( string $fx ) : Filter	Perform an imagemagick-style function on each pixel
exec ( string $command, string $params ) : Filter	Execute a manual CLI command -- normally used when there's no PHP alternatice
gamma ( float $gamma, integer $channel = null ) : Filter	Change the gamma of an image
hsl ( integer $hue, integer $saturation, integer $lightness ) : Filter	Replicate HSL function
image ( &$image = null )
imagick ( &$imagick = null )	This is the imagemagick instance to perform the filters on
levels ( float $gamma = 1, integer $input_min, integer $input_max = 255, integer $output_min, integer $output_max = 255, integer $channel = Imagick::CHANNEL_ALL ) : Filter	Replicate Photoshop's levels function.
vignette ( string $color, integer $composition = Imagick::COMPOSITE_DEFAULT, float $crop_factor = 1.5 ) : Filter	Adds a vignette to the image

비공개 메소드들

메소드	설명
_exec ( type $program, type $params, type $passthru = false ) : type	Execute the command

메소드 상세

__construct() 공개 메소드

public __construct ( array $configuration = [] )
$configuration	array

apply_filter() 추상적인 공개 메소드

You should only call this when you're ready to save, it often overwrites your image a few times (not always though) *

abstract public apply_filter ( )

brightness_contrast() 공개 메소드

Now this one is a bit of a pain. PHP's extension doesn't provide us with this handle (yet?) So we have to save the image to disk at this point, perform the function using the command line, and reload the image. yay.

public brightness_contrast ( integer $brightness, integer $contrast ) : Filter
$brightness	integer	this is should be -150 <= brightnes <= 150. 0 for no change.
$contrast	integer	this is should be -150 <= contrast <= 150. 0 for no change.
리턴	Filter

colorize() 공개 메소드

Replicate Colorize function

public colorize ( string $color, integer $composition = Imagick::COMPOSITE_MULTIPLY ) : Filter
$color	string	a hex or rgb(a) color
$composition	integer	use imagicks constants here
리턴	Filter

curves() 공개 메소드

This takes a series of points and generates a function for the graph that fits the points. That function is then applied to each pixes, as in photoshop. It should use curves_graph once the function has been generated.

public curves ( array $points, integer $channel = null ) : Filter
$points	array	an array of arrays. array(array(12, 32), array(32,56)) etc.
$channel	integer	use imagemagicks contants here
리턴	Filter

curves_graph() 공개 메소드

Perform an imagemagick-style function on each pixel

public curves_graph ( string $fx ) : Filter
$fx	string	the function
리턴	Filter

exec() 공개 메소드

Execute a manual CLI command -- normally used when there's no PHP alternatice

public exec ( string $command, string $params ) : Filter
$command	string	normally 'convert'
$params	string	the CLI params
리턴	Filter

gamma() 공개 메소드

Change the gamma of an image

public gamma ( float $gamma, integer $channel = null ) : Filter
$gamma	float	normally between 0.8 and 2
$channel	integer	Use the Imagick constants for this
리턴	Filter

hsl() 공개 메소드

Imagemagick calls this 'modulate '

public hsl ( integer $hue, integer $saturation, integer $lightness ) : Filter
$hue	integer	-100 <= hue <= 100. 0 is no change.
$saturation	integer	-100 <= hue <= 100. 0 is no change.
$lightness	integer	-100 <= hue <= 100. 0 is no change.
리턴	Filter

image() 공개 메소드

public image ( &$image = null )

imagick() 공개 메소드

It's recommended you supply a temporary file here! Some functions, such as brightness_contrast, overwrite the image.

public imagick ( &$imagick = null )

levels() 공개 메소드

Replicate Photoshop's levels function.

public levels ( float $gamma = 1, integer $input_min, integer $input_max = 255, integer $output_min, integer $output_max = 255, integer $channel = Imagick::CHANNEL_ALL ) : Filter
$gamma	float
$input_min	integer	between 0 and 255, same as photoshops
$input_max	integer	between 0 and 255, same as photoshops
$output_min	integer	between 0 and 255, same as photoshops
$output_max	integer	between 0 and 255, same as photoshops
$channel	integer	use imagemagicks constants
리턴	Filter

vignette() 공개 메소드

Adds a vignette to the image

public vignette ( string $color, integer $composition = Imagick::COMPOSITE_DEFAULT, float $crop_factor = 1.5 ) : Filter
$color	string	the colour of the vignette
$composition	integer	an imagick constant defining the composition to use
$crop_factor	float	defines the strenth of the vignette
리턴	Filter