Imagick::distortImage

(PECL imagick 2.0.1)

Imagick::distortImageDistorts an image using various distortion methods

Descrierea

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.

Această metodă este disponibilă dacă Imagick a fost compilat cu ImageMagick de versiunea 6.3.6 sau ulterior.

Parametri

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

Valorile întoarse

Întoarce TRUE în caz de succes.

Erori/Excepții

Emite ImagickException în caz de eroare.

Exemple

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(100100"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( 1010
                        
105,

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

                        
$im->getImageWidth() - 1010,
                        
$im->getImageWidth() - 1020,

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

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

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

Exemplul de mai sus va afișa ceva similar cu:

Output of example : Using Imagick::distortImage()

Vedeți de asemenea

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User Contributed Notes 2 notes

up
4
DJ Mike
3 years ago
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->distortImageImagick::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;
?>
up
0
ashokmca.g at gmail dot com
3 years ago
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;

?>
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