PHP | Gmagick modulateimage() Function
The Gmagick::modulateimage() function is an inbuilt function in PHP which is used to control the brightness, saturation, and hue of an image.
Syntax:
Gmagick Gmagick::modulateimage( $brightness, $saturation, $hue )
Parameters: This function accepts three parameters as mentioned above and described below:
- $brightness: This parameter is used to hold the value of brightness.
- $saturation: This parameter is used to hold the value of saturation.
- $hue: This parameter is used to hold the value of hue.
Return Value: This function returns Gmagick object on success.
Errors/Exceptions: This function throws GmagickException on error.
Below programs illustrates the Gmagick::modulateimage() function in PHP:
Program 1:
Input Image:
<?php // Create a Gmagick object $gmagick = new Gmagick( // Use modulateimage function $gmagick ->modulateimage(60, 100, 100); 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 modulateimage function $gmagick ->modulateimage(60, 100, 100); // Display the output image header( "Content-Type: image/png" ); echo $gmagick ->getImageBlob(); ?> |
Output:
Reference: http://php.net/manual/en/gmagick.modulateimage.php