Last updated: Fri, 22 Aug 2008

Imagick::evaluateImage

(No version information available, might be only in CVS)

Imagick::evaluateImage — Applies an expression to an image

Descripción

bool Imagick::evaluateImage ( int $op , float $constant [, int $channel ] )

Warning

Esta función no está documentada actualmente, solamente se encuentra disponible la lista de parámetros.

Applys an arithmetic, relational, or logical expression to an image. Use these operators to lighten or darken an image, to increase or decrease contrast in an image, or to produce the "negative" of an image.

Lista de parámetros

op: The operator
constant: The value of the operator
channel: Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Defaults to Imagick::CHANNEL_ALL. Refer to this list of channel constants.

Valores retornados

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.

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Imagick::evaluateImage

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Imagick::flattenImages

Imagick::equalizeImage

Last updated: Fri, 22 Aug 2008