PHP | Gmagick charcoalimage() Function

The Gmagick::charcoalimage() function is an inbuilt function in PHP which is used to rotate an image with given degrees. After rotating the image, empty triangles left which are filled with the background color.

Syntax:

Gmagick Gmagick::charcoalimage( $color, $degree)

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

• $color: This parameter holds the background color.
• $degree: This parameter holds the degree of rotation of image.

Return Value: This function returns Gmagick object on success.

Errors/Exceptions: This function throws GmagickException on error.

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

Program 1:
Original Image:

<?php

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

// Use charcoalimage() function
$gmagick->charcoalimage(10, 13);

header('Content-type: image/png');

// Output the image
echo $gmagick;
?>

Output:

Program 2:

<?php

// Create a GmagickDraw object
$draw = new GmagickDraw();

// Create GmagickPixel object
$strokeColor = new GmagickPixel('Red');
$fillColor = new GmagickPixel('Green');

// Set the color, opacity of image
$draw->setStrokeOpacity(1);
$draw->setStrokeColor('Red');
$draw->setFillColor('Green');

// Set the width and height of image
$draw->setStrokeWidth(7);
$draw->setFontSize(72);

// Function to draw circle
$draw->circle(250, 250, 100, 150);

$gmagick = new Gmagick();
$gmagick->newImage(500, 500, 'White');
$gmagick->setImageFormat("png");
$gmagick->drawImage($draw);

// Use charcoalimage() function
$gmagick->charcoalimage(15, 23);

// Display the output image
header("Content-Type: image/png");
echo $gmagick->getImageBlob();
?>

Output:

Reference: https://www.php.net/manual/en/gmagick.charcoalimage.php/a>