Last updated: Fri, 18 Jul 2008

Imagick::evaluateImage

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

Imagick::evaluateImage — Applies an expression to an image

Descrizione

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

Avviso

Questa funzione, al momento non è documentata; è disponibile soltanto la lista degli argomenti.

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.

Elenco dei parametri

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.

Valori restituiti

Restituisce TRUE in caso di successo.

Errori/Eccezioni

Lancia una ImagickException in caso di errore.

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Imagick::evaluateImage

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Imagick::flattenImages

Imagick::equalizeImage

Last updated: Fri, 18 Jul 2008