$width = $mat[1];
$height = $mat[2];
} else {
$width = 200;
$height = 200;
$text = $width . 'x' . $height;
}
if ($width < 1 || $height < 1) {
die("too small!");
}
$area = $width * $height;
if ($area >= 16000000 || $width > 9999 || $height > 9999) {
die("to big!");
}
$newbg = color2rgb($bg);
$newcolor = color2rgb($color);
$font = 'wqy-microhei.ttc';
$text_angle = 0;
$fontsize = max(min($width / strlen($text) * 1.15, $height * 0.5), 5);
$text = mb_convert_encoding(urldecode($text), "UTF-8", "auto");
$rect = ImageTTFBBox($fontsize, 0, $font, $text);
$a = deg2rad($text_angle);
$ca = cos($a);
$sa = sin($a);
$ret = array();
for ($i = 0; $i < 7; $i += 2) {
$ret[$i] = round($rect[$i] * $ca + $rect[$i + 1] * $sa);
$ret[$i + 1] = round($rect[$i + 1] * $ca - $rect[$i] * $sa);
}
$textWidth = ceil(($ret[4] - $ret[1]) * 1.07);
$textHeight = ceil((abs($ret[7]) + abs($ret[1])) * 1);
function imagefilledellipseaa(&$im, $CX, $CY, $Width, $Height, $color)
{
$XRadius = floor($Width / 2);
$YRadius = floor($Height / 2);
$baseColor = color2rgb($color);
$TwoASquare = 2 * $XRadius * $XRadius;
$TwoBSquare = 2 * $YRadius * $YRadius;
$X = $XRadius;
$Y = 0;
$XChange = $YRadius * $YRadius * (1 - 2 * $XRadius);
$YChange = $XRadius * $XRadius;
$EllipseError = 0;
$StoppingX = $TwoBSquare * $XRadius;
$StoppingY = 0;
$alpha = 77;
$color = imagecolorexactalpha($im, $baseColor[0], $baseColor[1], $baseColor[2], $alpha);
while ($StoppingX >= $StoppingY) {
imagefilledellipseaa_Plot4EllipsePoints($im, $CX, $CY, $X, $Y, $color, 0);
$Y++;
$StoppingY += $TwoASquare;
$EllipseError += $YChange;
$YChange += $TwoASquare;
if (2 * $EllipseError + $XChange > 0) {
$X--;
$StoppingX -= $TwoBSquare;
$EllipseError += $XChange;
$XChange += $TwoBSquare;
}
$filled = $X - sqrt($XRadius * $XRadius - $XRadius * $XRadius / ($YRadius * $YRadius) * $Y * $Y);
$alpha = abs(90 * $filled + 37);
imagecolordeallocate($im, $color);
$color = imagecolorexactalpha($im, $baseColor[0], $baseColor[1], $baseColor[2], $alpha);
}
$X = 0;
$Y = $YRadius;
$XChange = $YRadius * $YRadius;
$YChange = $XRadius * $XRadius * (1 - 2 * $YRadius);
$EllipseError = 0;
$StoppingX = 0;
$StoppingY = $TwoASquare * $YRadius;
$alpha = 77;
$color = imagecolorexactalpha($im, $baseColor[0], $baseColor[1], $baseColor[2], $alpha);
while ($StoppingX <= $StoppingY) {
imagefilledellipseaa_Plot4EllipsePoints($im, $CX, $CY, $X, $Y, $color, 1);
$X++;
$StoppingX += $TwoBSquare;
$EllipseError += $XChange;
$XChange += $TwoBSquare;
if (2 * $EllipseError + $YChange > 0) {
$Y--;
$StoppingY -= $TwoASquare;
$EllipseError += $YChange;
$YChange += $TwoASquare;
}
$filled = $Y - sqrt($YRadius * $YRadius - $YRadius * $YRadius / ($XRadius * $XRadius) * $X * $X);
$alpha = abs(90 * $filled + 37);
imagecolordeallocate($im, $color);
$color = imagecolorexactalpha($im, $baseColor[0], $baseColor[1], $baseColor[2], $alpha);
}
}
