PHP | Gmagick setimageblueprimary() Function

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:

PHP

// Create new Gmagick object
$Gmagick = new Gmagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-15.png');

// 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:

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