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PHP | Gmagick setimageblueprimary() Function
  • Last Updated : 29 Aug, 2019

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 accept 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 
   
$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); 
$im->newImage($metrix['textWidth'], $metrix['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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