note 121938 added to function.imagesetinterpolation

Setting the interpolation does not carry through to any images created by imageaffine() or imagerotate(). It defaults to IMG_BILINEAR_FIXED and would need to be set on each generated image as required. <?php imagesetinterpolation( $image, IMG_NEAREST_NEIGHBOUR ); // Rotated using IMG_NEAREST_NEIGHBOUR $rotated = imagerotate( $image, 45, $transparent ); // Rotated using IMG_BILINEAR_FIXED $rotated_again = imagerotate( $rotated, 45, $transparent ); ?> Setting the interpolation to IMG_NEAREST_NEIGHBOUR can help to preserve details and prevent sampling issues when rotating an image at 90 degree increments, including when rotating clockwise. <?php // Rotated image can appear blurred and on a slight angle. $rotated = imagerotate( $image, -360, $transparent ); // Similar to starting Image although it may still show a background or be on a slight angle. imagesetinterpolation( $image, IMG_NEAREST_NEIGHBOUR ); $rotated = imagerotate( $image, -360, $transparent ); ?> ---- Server IP: 208.43.231.9 Probable Submitter: 211.26.34.121 ---- Manual Page -- http://php.net/manual/en/function.imagesetinterpolation.php Edit -- https://master.php.net/note/edit/121938 Del: integrated -- https://master.php.net/note/delete/121938/integrated Del: useless -- https://master.php.net/note/delete/121938/useless Del: bad code -- https://master.php.net/note/delete/121938/bad+code Del: spam -- https://master.php.net/note/delete/121938/spam Del: non-english -- https://master.php.net/note/delete/121938/non-english Del: in docs -- https://master.php.net/note/delete/121938/in+docs Del: other reasons-- https://master.php.net/note/delete/121938 Reject -- https://master.php.net/note/reject/121938 Search -- https://master.php.net/manage/user-notes.php