Instafilter\Filter::curves PHP Method

Filter Class Documentation Show file Open project: fbf/instafilter

curves() public method

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
return	Filter

    public function curves($points, $channel = null)
    {
        //polynomial interpolation
        throw new \Exception('Curves is not yet implemented.');
        return $this;
    }

Filter

__construct

_exec

apply_filter

brightness_contrast

colorize

curves

curves_graph

exec

gamma

hsl

image

imagick

levels

vignette