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(PECL imagick 2.0.0)
ImagickDraw::affine — Adjusts the current affine transformation matrix
$affine
)本函数还未编写文档,仅有参数列表。
Adjusts the current affine transformation matrix with the specified affine transformation matrix.
affine
Affine matrix parameters
没有返回值。
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 ();
}
?>