ImagickDraw::affine
ImagickDraw::affine
(PECL imagick 2.0.0)
ImagickDraw::affine — Adjusts the current affine transformation matrix
Description
bool ImagickDraw::affine ( array $affine )
Warning
This function is currently not documented; only its argument list is available.
Adjusts the current affine transformation matrix with the specified affine transformation matrix.
Parameters
affine
Affine matrix parameters
Return Values
No value is returned.
Examples
Example #1 ImagickDraw::affine()
<?php
function affine($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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