ImagickDraw::affine

(PECL imagick 2, PECL imagick 3)

ImagickDraw::affineAjuste la matrice de transformation affine courante

Description

public ImagickDraw::affine(array $affine): bool
Avertissement

Cette fonction est actuellement non documentée ; seule la liste des arguments est disponible.

Ajuste la matrice de transformation affine courante, avec la nouvelle matrice de transformation.

Liste de paramètres

affine

Paramètres de matrice de transformation affine.

Valeurs de retour

Aucune valeur n'est retournée.

Exemples

Exemple #1 Exemple avec ImagickDraw::affine()

<?php
function affine($strokeColor, $fillColor, $backgroundColor) {

$draw = new \ImagickDraw();

$draw->setStrokeWidth(1);
$draw->setStrokeOpacity(1);
$draw->setStrokeColor($strokeColor);
$draw->setFillColor($fillColor);

$draw->setStrokeWidth(2);

$PI = 3.141592653589794;
$angle = 60 * $PI / 360;

//Scale the drawing co-ordinates.
$affineScale = array("sx" => 1.75, "sy" => 1.75, "rx" => 0, "ry" => 0, "tx" => 0, "ty" => 0);

//Shear the drawing co-ordinates.
$affineShear = array("sx" => 1, "sy" => 1, "rx" => sin($angle), "ry" => -sin($angle), "tx" => 0, "ty" => 0);

//Rotate the drawing co-ordinates. The shear affine matrix
//produces incorrectly scaled drawings.
$affineRotate = array("sx" => cos($angle), "sy" => cos($angle), "rx" => sin($angle), "ry" => -sin($angle), "tx" => 0, "ty" => 0,);

//Translate (offset) the drawing
$affineTranslate = array("sx" => 1, "sy" => 1, "rx" => 0, "ry" => 0, "tx" => 30, "ty" => 30);

//The identiy affine matrix
$affineIdentity = array("sx" => 1, "sy" => 1, "rx" => 0, "ry" => 0, "tx" => 0, "ty" => 0);

$examples = [$affineScale, $affineShear, $affineRotate, $affineTranslate, $affineIdentity,];

$count = 0;

foreach (
$examples as $example) {
$draw->push();
$draw->translate(($count % 2) * 250, intval($count / 2) * 250);
$draw->translate(100, 100);
$draw->affine($example);
$draw->rectangle(-50, -50, 50, 50);
$draw->pop();
$count++;
}

//Create an image object which the draw commands can be rendered into
$image = new \Imagick();
$image->newImage(500, 750, $backgroundColor);
$image->setImageFormat("png");

//Render the draw commands in the ImagickDraw object
//into the image.
$image->drawImage($draw);

//Send the image to the browser
header("Content-Type: image/png");
echo
$image->getImageBlob();
}

?>

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