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ImagickDraw::affine

(PECL imagick 2, PECL imagick 3)

ImagickDraw::affineAdjusts the current affine transformation matrix

Descrição

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

Esta função não está documentada; somente a lista de argumentos está disponível.

Adjusts the current affine transformation matrix with the specified affine transformation matrix.

Parâmetros

affine

Affine matrix parameters

Valor Retornado

Não há valor retornado.

Exemplos

Exemplo #1 ImagickDraw::affine() example

<?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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