The Imagick::cycleColormapImage() function is an inbuilt function in PHP which is used to displace the colormap (It is a m × 3 matrix containing real numbers between 0.0 and 1.0. Each row of the matrix is an RGB vector that defines one color.) of the image by a given number of positions. If you cycle the colormap number of times then it can produce a psychedelic effect.
Syntax:
bool Imagick::cycleColormapImage( $displace )
Parameters: This function accepts single parameter $displace which holds the amount to displace the colormap (in integer).
Return Value: This function returns true on success.
Below program illustrates the Imagick::cycleColormapImage() function in PHP:
Program:
<?php // Declare an Imagick object $image = new Imagick(
// Use Imagick::cycleColormapImage() function $image ->cycleColormapImage (8);
header( "Content-Type: image/jpg" );
// Display the output image echo $image ->getImageBlob();
?> |
Output:
Reference: https://www.php.net/manual/en/imagick.cyclecolormapimage.php