note 58932 added to function.imagecopy

Here a function to make holes into images: // Set the alpha channel for a part of an image (it ignores the canvas alpha atm). // $img_canvas - 32-bit true color image w/ alpha channel // $img_mask - 8-bit gray scale image (white parts will be masked transparent in the canvas). // This relies on the current pixel format: // (high byte) -> (alpha channel} {red} {green} {blue} <- (low byte) function mask($img_canvas, $img_mask, $dst_x, $dst_y) { $old_blendmode = imagealphablending($img_canvas, FALSE); $width = imagesx($img_mask); $heigth = imagesy($img_mask); $mask_x = 0; $x = $dst_y; while ($mask_x<$width) { $mask_y = 0; $y = $dst_y; while ($mask_y<$heigth) { imagesetpixel($img_canvas, $x, $y, ((imagecolorat($img_mask, $mask_x, $mask_y) >> 1) << 24) | (imagecolorat($img_canvas, $x, $y) & 0x00FFFFFF)); ++$mask_y; ++$y; } ++$mask_x; ++$x; } imagealphablending($img_canvas, $old_blendmode); } ---- Manual Page -- http://www.php.net/manual/en/function.imagecopy.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+58932 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+58932&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+58932&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+58932&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+58932&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+58932&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+58932&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+58932&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+58932&report=yes Search -- http://master.php.net/manage/user-notes.php