| Method | Description | |
|---|---|---|
| colorize ( $hexColor ) : boolean | WP_Error | Tints the image a different color | |
| grayscale ( ) : boolean | WP_Error | Makes the image grayscale | |
| negate ( ) : boolean | WP_Error | Negates the image | |
| opacity ( float $opacity ) : boolean | WP_Error | Changes the opacity of the image | |
| rotate ( float $angle ) : boolean | WP_Error | Rotates current image counter-clockwise by $angle. |
| Method | Description | |
|---|---|---|
| _opacity ( $image, $opacity ) | params: image resource id, opacity (eg. 0.0-1.0) |
| protected _opacity ( $image, $opacity ) |