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PHP | Gmagick setimageblueprimary() Function

Last Updated : 11 Jan, 2022
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The Gmagick::setimageblueprimary() function is an inbuilt function in PHP which is used to set the depth for a particular image channel.

Syntax: 

Gmagick Gmagick::setimageblueprimary( $x, $y )

Parameters: This function accepts two parameters as mentioned above and described below:  

  • $x: It specifies the blue primary x-point.
  • $y: It specifies the blue primary y-point.

Return Value: This function returns an array containing x and y coordinate of point.

Below programs illustrate the Gmagick::setimageblueprimary() function in PHP:

Program 1: 
Original Image: 

https://media.geeksforgeeks.org/wp-content/uploads/geeks-21.png

PHP




// Create new Gmagick object
$Gmagick = new Gmagick(
    
// Using getImageBluePrimary function
echo "Before Set Blue Primary: ";
$res = $Gmagick->getImageBluePrimary();
print_r($res);
    
// Set blue primary point
$Gmagick->setImageBluePrimary( 1.765, 2.5698 );
    
echo "</br>  After Set Blue Primary: ";
$res = $Gmagick->getImageBluePrimary();
   
print_r($res);
?>


Output: 

Before Set Blue Primary: Array ( [x] => 0.15000000596046 [y] => 
0.059999998658895 )
After Set Blue Primary: Array ( [x] => 1.765 [y] => 2.5698 ) 

Program 2: 
Original Image: 

https://media.geeksforgeeks.org/wp-content/uploads/Screenshot-from-2018-10-16-23-23-54.png

PHP




<?php 
    
$string = "Computer Science portal for Geeks!"
    
// Creating new image of above String 
// and add color  
$im = new Gmagick(); 
$draw = new GmagickDraw(); 
    
// Fill the color in image 
$draw->setFillColor(new GmagickPixel('green')); 
    
// Set the text font size 
$draw->setFontSize(50); 
    
$metrix = $im->queryFontMetrics($draw, $string); 
$draw->annotation(0, 40, $string); 
$im->newImage($matrix['textWidth'], $matrix['textHeight'], 
        new GmagickPixel('white')); 
    
// Draw the image         
$im->drawImage($draw); 
$im->setImageFormat('jpeg'); 
    
// Using getImageBluePrimary function
echo "Before Set Blue Primary: ";
$res = $im->getImageBluePrimary();
print_r($res);
    
    
// Set blue primary point
$im->setImageBluePrimary(20.765, 14.1698);
    
echo "</br>  After Set Blue Primary: ";
$res = $im->getImageBluePrimary();
print_r($res);
?>


Output: 

Before Set Blue Primary: Array ( [x] => 0.15000000596046 [y] => 
0.059999998658895 )
After Set Blue Primary: Array ( [x] => 20.765 [y] => 14.1698 ) 

Reference: http://php.net/manual/en/gmagick.setimageblueprimary.php
 



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