Filter

Filter Interface

Describes Filter interface.

reverseColor

Reverses all colors of the image. Throw GdException if error. Throw ValidationException if invalid.

$selection = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100
];

$gd = $gd->reverseColor($selection);

grayscale

Converts the image into grayscale. Throw GdException if error. Throw ValidationException if invalid.

$selection = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100
];

$gd = $gd->grayscale($selection);

edgeDetect

Uses edge detection to highlight the edges in the image. Throw GdException if error. Throw ValidationException if invalid.

$selection = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100
];

$gd = $gd->edgeDetect($selection);

embosses

Embosses the image. Throw GdException if error. Throw ValidationException if invalid.

$selection = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100
];

$gd = $gd->embosses($selection);

blur

Blurs the image. Throw GdException if error. Throw ValidationException if invalid.

$blur = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100,
    "method" => GdBlur::GAUSSIAN
];

$gd = $gd->blur($blur);

sketchy

Uses mean removal to achieve a "sketchy" effect. Throw GdException if error. Throw ValidationException if invalid.

$selection = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100
];

$gd = $gd->sketchy($selection);

brightness

Changes the brightness of the image. Throw GdException if error. Throw ValidationException if invalid. Level: -255 ~ 255

$brightness = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100,
    "level" => 100
];

$gd = $gd->brightness($brightness);

contrast

Changes the contrast of the image. Throw GdException if error. Throw ValidationException if invalid. Level: -100 ~ 100

$contrast = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100,
    "level" => 50
];

$gd = $gd->contrast($contrast);

smooth

Makes the image smoother. Throw GdException if error. Throw ValidationException if invalid. Level: -8 ~ 8

$smooth = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100,
    "level" => 4
];

$gd = $gd->smooth($smooth);

pixelate

Applies pixelation effect to the image. Throw GdException if error. Throw ValidationException if invalid.

$pixelate = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100,
    "block" => 8,
    "advance" => false
];

$gd = $gd->pixelate($pixelate);

scatter

Applies scatter effect to the image. Throw GdException if error. Throw ValidationException if invalid.

$scatter = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100,
    "substraction" => 8,
    "addition" => 4,
    "colors" => [ ... ]
];

$gd = $gd->scatter($scatter);

colorize

Converts the image into specify color. Throw GdException if error. Throw ValidationException if invalid.

$colorize = [
    "x" => 45,
    "y" => 60,
    "width" => 150,
    "height" => 100,
    "alpha" => 8,
    "red" => 16,
    "green" => 32,
    "blue" => 64
];

$gd = $gd->colorize($colorize);