PHP | ImagickDraw setGravity() Function

Difficulty Level : Easy
Last Updated : 30 Aug, 2019

The ImagickDraw::setGravity() function is an inbuilt function in PHP which is used to set the text placement gravity when annotating with text.

Syntax:

bool ImagickDraw::setGravity( $gravity )

Parameters: This function accepts single parameter $gravity which is used to hold the value of gravity as GRAVITY_ constant.

List of GRAVITY constants are given below:

imagick::GRAVITY_NORTHWEST (integer)
imagick::GRAVITY_NORTH (integer)
imagick::GRAVITY_NORTHEAST (integer)
imagick::GRAVITY_WEST (integer)
imagick::GRAVITY_CENTER (integer)
imagick::GRAVITY_EAST (integer)
imagick::GRAVITY_SOUTHWEST (integer)
imagick::GRAVITY_SOUTH (integer)
imagick::GRAVITY_SOUTHEAST (integer)

Return Value: This function does not return any value.

Below programs illustrate the ImagickDraw::setGravity() function in PHP:

Program 1:

<?php
  
// Create an ImagickDraw object
$draw = new ImagickDraw();
  
// Set the image filled color 
$draw->setFillColor('Green');
  
// Set the Font Size
$draw->setFontSize(30);
  
// Set the Gravity Position
$draw->setGravity(5);
  
// Set the font family
$draw->setFontFamily('Ani');
  
// Set the text to be added
$draw->annotation(30, 40, "GeeksForGeeks");
  
// Create new Imagick object 
$imagick = new Imagick();'
  
// Set the image dimension
$imagick->newImage(300, 150, 'white');
  
// Set the image format
$imagick->setImageFormat("png");
  
// Draw the image
$imagick->drawImage($draw);
header("Content-Type: image/png");
  
// Display the image
echo $imagick->getImageBlob();
?>

Output:
setGravity

Program 2:

<?php
  
// Create an ImagickDraw object 
$draw = new ImagickDraw();
  
// Set the image filled color 
$draw->setFillColor('green');
  
// Set the font size
$draw->setFontSize(60);
  
// Set the Gravity Position
$draw->setGravity(2);
  
// Set the text decoration
$draw->setTextDecoration(4);
  
// Set the text to be added
$draw->annotation(50, 75, "GeeksForGeeks");
  
// Create new Imagick object  
$imagick = new Imagick();
  
// Set the image dimensions
$imagick->newImage(600, 160, 'white');
  
// Set the image format
$imagick->setImageFormat("png");
  
// Draw the image
$imagick->drawImage($draw);
header("Content-Type: image/png");
  
// Display the image
echo $imagick->getImageBlob();
?>

Output:
setGravity

Reference: http://php.net/manual/en/imagickdraw.setgravity.php

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