Imagick::distortImage

(PECL imagick 2.0.1)

Imagick::distortImage — Distorts an image using various distortion methods

Description

bool Imagick::distortImage ( int $method , array $arguments , bool $bestfit )

Distorts an image using various distortion methods, by mapping color lookups of the source image to a new destination image usually of the same size as the source image, unless 'bestfit' is set to TRUE.

If 'bestfit' is enabled, and distortion allows it, the destination image is adjusted to ensure the whole source 'image' will just fit within the final destination image, which will be sized and offset accordingly. Also in many cases the virtual offset of the source image will be taken into account in the mapping.

This method is available if Imagick has been compiled against ImageMagick version 6.3.6 or newer.

Parameters

method: The method of image distortion. See distortion constants
arguments: The arguments for this distortion method
bestfit: Attempt to resize destination to fit distorted source

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.

Examples

Example #1 Using Imagick::distortImage():

Distort an image and display to the browser.


<?php
/* Create new object */
$im = new Imagick();

/* Create new checkerboard pattern */
$im->newPseudoImage(100, 100, "pattern:checkerboard");

/* Set the image format to png */
$im->setImageFormat('png');

/* Fill new visible areas with transparent */
$im->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_TRANSPARENT);

/* Activate matte */
$im->setImageMatte(true);

/* Control points for the distortion */
$controlPoints = array( 10, 10, 
                        10, 5,

                        10, $im->getImageHeight() - 20,
                        10, $im->getImageHeight() - 5,

                        $im->getImageWidth() - 10, 10,
                        $im->getImageWidth() - 10, 20,

                        $im->getImageWidth() - 10, $im->getImageHeight() - 10,
                        $im->getImageWidth() - 10, $im->getImageHeight() - 30);

/* Perform the distortion */                       
$im->distortImage(Imagick::DISTORTION_PERSPECTIVE, $controlPoints, true);

/* Ouput the image */
header("Content-Type: image/png");
echo $im;
?>

The above example will output something similar to:

Output of example : Using Imagick::distortImage()

Коментарии

Feb 04

Автор: ashokmca.g at gmail dot com


Slide image with shadow using distortImage



<?php



$slideValue = 150;



// Create new object 

$im = new Imagick("grnhrs.jpg");



// Resize 

$im->thumbnailImage(500,400);



// Set the image format to png 

$im->setImageFormat('png');



//Clone the current object

$shadow = $im->clone();



//Set image background color to black (this is the color of the shadow)

$shadow->setImageBackgroundColor( new ImagickPixel( 'black' ) );

 

 //Create the shadow 

$shadow->shadowImage( 80, 10, 5, 5 );



// Fill background area with transparent for image

//VIRTUALPIXELMETHOD_TRANSPARENT

$im->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_ TRANSPARENT);



// Activate matte 

$im->setImageMatte(true);



//Control points for the distortion 

$controlPoints = array( 0, 0,

                        $slideValue, 0,

                        

                        0, $im->getImageHeight(),

                        0, $im->getImageHeight(),

                        

                        $im->getImageWidth(), 0,

                        $im->getImageWidth(), 0,

                        

                        $im->getImageWidth(), $im->getImageHeight(),

                        $im->getImageWidth()-$slideValue, $im->getImageHeight());

                        

// Perform the distortion 

$im->distortImage(Imagick::DISTORTION_PERSPECTIVEPROJECTION, $controlPoints, true);



// Perform the distortion in shadow image

$shadow->distortImage(Imagick::DISTORTION_PERSPECTIVEPROJECTION, $controlPoints, true);



// Imagick::shadowImage only creates the shadow.

// That is why the original image is composited over it 

$shadow->compositeImage( $im, Imagick::COMPOSITE_OVER, 0, 0 );



/* Ouput the image */

header("Content-Type: image/png");

echo $shadow;



?>

2011-02-04 04:13:33

http://php5.kiev.ua/manual/ru/imagick.distortimage.html

Apr 12

Автор: DJ Mike


Affine



<?php 

$image = new imagick( "opossum.jpg" ); 

$points = array( 

                0,0, 25,25,   

               100,0, 100,50 

               );

$image->setimagebackgroundcolor("#fad888");

$image->setImageVirtualPixelMethod( imagick::VIRTUALPIXELMETHOD_BACKGROUND );

$image->distortImage(  Imagick::DISTORTION_AFFINE, $points, TRUE ); 

header( "Content-Type: image/jpeg" ); 

echo $image;

?>



Affine Projection



<?php 

$image = new imagick( "opossum.jpg" ); 

$points = array( 0.9,0.3,

                -0.2,0.7,

                 20,15 );

$image->setimagebackgroundcolor("#fad888");

$image->setImageVirtualPixelMethod( imagick::VIRTUALPIXELMETHOD_BACKGROUND );

$image->distortImage( Imagick::DISTORTION_AFFINEPROJECTION, $points, TRUE ); 

header( "Content-Type: image/jpeg" ); 

echo $image;

?>



Arc



<?php 

$image = new imagick( "opossum.jpg" ); 

$draw = new imagickdraw(); 

$degrees = array( 180 );

$image->setimagebackgroundcolor("#fad888");

$image->setImageVirtualPixelMethod( imagick::VIRTUALPIXELMETHOD_BACKGROUND );

$image->distortImage( Imagick::DISTORTION_ARC, $degrees, TRUE ); 

header( "Content-Type: image/jpeg" ); 

echo $image;

?>



Rotated Arc



<?php 

$image = new imagick( "opossum.jpg" ); 

$draw = new imagickdraw(); 

$degrees = array( 180, 45, 100, 20 );

$image->setimagebackgroundcolor("#fad888");

$image->setImageVirtualPixelMethod( imagick::VIRTUALPIXELMETHOD_BACKGROUND );

$image->distortImage( Imagick::DISTORTION_ARC, $degrees, TRUE ); 

header( "Content-Type: image/jpeg" ); 

echo $image;

?>



Bilinear



<?php 

$image = new imagick( "opossum.jpg" ); 

$points = array( 

                0,0, 25,25, # top left  

                176,0, 126,0, # top right

                0,135, 0,105, # bottom right 

                176,135, 176,135 # bottum left

                );

$image->setimagebackgroundcolor("#fad888");

$image->setImageVirtualPixelMethod( imagick::VIRTUALPIXELMETHOD_BACKGROUND );

$image->distortImage( Imagick::DISTORTION_BILINEAR, $points, TRUE ); 

header( "Content-Type: image/jpeg" ); 

echo $image;

?>



Perspective



<?php 

$image = new imagick( "opossum.jpg" ); 

$points = array( 

                0,0, 25,25, # top left  

                176,0, 126,0, # top right

                0,135, 0,105, # bottom right 

                176,135, 176,135 # bottum left

                );

$image->setimagebackgroundcolor("#fad888");

$image->setImageVirtualPixelMethod( imagick::VIRTUALPIXELMETHOD_BACKGROUND );

$image->distortImage( Imagick::DISTORTION_PERSPECTIVE, $points, TRUE ); 

header( "Content-Type: image/jpeg" ); 

echo $image;

?>



Scale Rotate Translate



<?php 

$image = new imagick( "opossum.jpg" ); 

$points = array( 

                 1.5, # scale 150%

                 150 # rotate

               );

$image->setimagebackgroundcolor("#fad888");

$image->setImageVirtualPixelMethod( imagick::VIRTUALPIXELMETHOD_BACKGROUND );

$image->distortImage( imagick::DISTORTION_SCALEROTATETRANSLATE, $points, TRUE ); 

header( "Content-Type: image/jpeg" ); 

echo $image;

?>

2011-04-12 02:11:07

http://php5.kiev.ua/manual/ru/imagick.distortimage.html

Dec 30

Автор: peter dot e dot lind at gmail dot com


It is worth nothing that details on distorts as well as arguments can be found at http://www.imagemagick.org/Usage/distorts/ - the PHP manual doesn't give much, if any, detail on arguments.



I found this very useful when I had to do a translated rotation on an image - i.e. rotating around a point in the image that was not square in the center. This can be achieved by using distortImage with Imagick::DISTORTION_SCALEROTATETRANSLATE like this:



<?php



$imagick = new Imagick('/path/to/image');

$args = array(

    20, # x point to rotate around

    20, # y point to rotate around

    1, # scaling factor - 1 means no scaling

    90, # angle to rotate

);



$imagick->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_TRANSPARENT);

$imagick->distortImage(Imagick::DISTORTION_SCALEROTATETRANSLATE, $args, true);



?>



Note that this type of distort takes from 1 to 7 arguments, depending on what you want to do exactly - there is a lot of flexibility here.

2014-12-30 10:55:08

http://php5.kiev.ua/manual/ru/imagick.distortimage.html

Feb 13

Автор: Abe


Control Points for DISTORTION_PERSPECTIVE are pairs of x0, y0, x1, y1 coordinates, where x0/y0 is the original point and x1/y1 is the destination point, 



e.g. for a four point distortion:



    <?php 



    $im = new imagick( $fn); 



    $w=$im->getImageWidth();

    $h=$im->getImageHeight();

    $im->setImageFormat('png');



    $controlPoints = array(

                    $tLx, $tLy, 0, 0,  // top left

                    $tRx, $tRy, $w, 0, // top right

                    $bRx, $bRy, $w, $h, // bottom right

                    $bLx, $bLy, 0, $h // bottom left

                );



    /* Perform the distortion */

    $im->distortImage(Imagick::DISTORTION_PERSPECTIVE, $controlPoints, false);



    // Output the image

    $output = $im->getimageblob();

    $outputtype = $im->getFormat();



    header("Content-type: $outputtype");

    echo $output;

     

    ?>

2021-02-13 19:21:27

http://php5.kiev.ua/manual/ru/imagick.distortimage.html

Imagick::displayImages

Imagick::drawImage

Imagick

PHP Manual

PHP5

Для web разработчика

Nov 13
Функция Imagick::distortImage() - Distorts an image using various distortion methods

Imagick::distortImage

Description

Parameters

Return Values

Errors/Exceptions

Examples

See Also

Коментарии

PHP5

Для web разработчика

Nov 13Функция Imagick::distortImage() - Distorts an image using various distortion methods

Imagick::distortImage

Description

Parameters

Return Values

Errors/Exceptions

Examples

See Also

Коментарии

Nov 13
Функция Imagick::distortImage() - Distorts an image using various distortion methods