note 106939 added to function.imageantialias

I little change function for transparent background. function imagecircleaa($img, $cx, $cy, $r, $w, $s, $t, $color) // image, centerX, centerY, radius, stroke width, aa width, tightness, color { $adj = $w + $s; $sCol = imagecolorallocate($img, $color['r'], $color['g'], $color['b']); for($x = -$r - $adj; $x <= $r + $adj; $x++) { for($y = -$r - $adj; $y <= $r + $adj; $y++) { $d = sqrt($x * $x + $y * $y); // distance from pixel to center $err = abs($d - $r); // absolute distance from pixel to circle edge if($err <= $w / 2 + $s) // within the stroke width + smoothing radius { if($err <= $w / 2) // inside the stroke width so make it solid color { $aaCol = $sCol; } else // in the antialisaing region so make it a blended color { $err -= $w / 2; // adjust to the aliased part $err = 1 - $err / $s; // adjust to between 0 and 1 $err = ($err - 0.5) * $t * 2; // adjust to -$t to +$t for tightness $err = ($err / sqrt(1 + $err * $err) + 1) / 2; // sigmoid curve to smooth edges $aaCol = imagecolorallocatealpha($img,$color['r'], $color['g'], $color['b'],127-(127*$err)); } imagesetpixel($img, $x + $cx, $y + $cy, $aaCol); } } } } ---- Server IP: 82.177.164.100 Probable Submitter: 81.219.54.77 ---- Manual Page -- http://www.php.net/manual/en/function.imageantialias.php Edit -- https://master.php.net/note/edit/106939 Del: integrated -- https://master.php.net/note/delete/106939/integrated Del: useless -- https://master.php.net/note/delete/106939/useless Del: bad code -- https://master.php.net/note/delete/106939/bad+code Del: spam -- https://master.php.net/note/delete/106939/spam Del: non-english -- https://master.php.net/note/delete/106939/non-english Del: in docs -- https://master.php.net/note/delete/106939/in+docs Del: other reasons-- https://master.php.net/note/delete/106939 Reject -- https://master.php.net/note/reject/106939 Search -- https://master.php.net/manage/user-notes.php