/**
* ctreates round corners
* @param string destination image key
* @param integer radius (0-100)
* @param integer rounding quality (1-5)
* @return void
*/
function make_roundcorners($sDestKey, $radius = 5, $rate = 5)
{
$width = ImagesX($this->img[$sDestKey]);
$height = ImagesY($this->img[$sDestKey]);
ImageAlphablending($this->img[$sDestKey], false);
ImageSaveAlpha($this->img[$sDestKey], true);
$rs_radius = $radius * $rate;
$rs_size = $rs_radius * 2;
$corner = ImageCreateTrueColor($rs_size, $rs_size);
ImageAlphablending($corner, false);
$trans = ImageColorAllocateAlpha($corner, 255, 255, 255, 127);
ImageFill($corner, 0, 0, $trans);
$positions = array(array(0, 0, 0, 0), array($rs_radius, 0, $width - $radius, 0), array($rs_radius, $rs_radius, $width - $radius, $height - $radius), array(0, $rs_radius, 0, $height - $radius));
foreach ($positions as $pos) {
ImageCopyResampled($corner, $this->img[$sDestKey], $pos[0], $pos[1], $pos[2], $pos[3], $rs_radius, $rs_radius, $radius, $radius);
}
$lx = $ly = 0;
$i = -$rs_radius;
$y2 = -$i;
$r_2 = $rs_radius * $rs_radius;
for (; $i <= $y2; $i++) {
$y = $i;
$x = sqrt($r_2 - $y * $y);
$y += $rs_radius;
$x += $rs_radius;
ImageLine($corner, $x, $y, $rs_size, $y, $trans);
ImageLine($corner, 0, $y, $rs_size - $x, $y, $trans);
$lx = $x;
$ly = $y;
}
foreach ($positions as $i => $pos) {
ImageCopyResampled($this->img[$sDestKey], $corner, $pos[2], $pos[3], $pos[0], $pos[1], $radius, $radius, $rs_radius, $rs_radius);
}
ImageDestroy($corner);
}
/**
* Закругленные углы
*
* @param mixed $img дескриптор изображения
* @param mixed $cornercolor цвет углов в 16-ной кодировке. Если false - прозрачный
* @param mixed $radius радиус закругления
* @param mixed $rate сглаживание закругления, максимум - 20
*/
private function roundCornersGD(&$img, $cornercolor, $radius = 5, $rate = 5)
{
if ($radius <= 0) {
return false;
}
if ($rate <= 0) {
$rate = 5;
}
if ($radius > 100) {
$radius = 100;
}
if ($rate > 20) {
$rate = 20;
}
$width = ImagesX($img);
$height = ImagesY($img);
$radius = $width <= $height ? round($width / 100 * $radius / 2) : round($height / 100 * $radius / 2);
$rs_radius = $radius * $rate;
$rs_size = $rs_radius * 2;
ImageAlphablending($img, false);
ImageSaveAlpha($img, true);
$corner = ImageCreateTrueColor($rs_size, $rs_size);
ImageAlphablending($corner, false);
if ($cornercolor === false) {
$this->oImg['type'] = IMAGETYPE_PNG;
}
if ($this->oImg['type'] == IMAGETYPE_PNG) {
$trans = ImageColorAllocateAlpha($corner, 255, 255, 255, 127);
} else {
$trans = ImageColorAllocateAlpha($corner, (int) ($cornercolor % 0x1000000 / 0x10000), (int) ($cornercolor % 0x10000 / 0x100), $cornercolor % 0x100, 0);
}
imagefilledrectangle($corner, 0, 0, $rs_size, $rs_size, $trans);
$positions = array(array(0, 0, 0, 0), array($rs_radius, 0, $width - $radius, 0), array($rs_radius, $rs_radius, $width - $radius, $height - $radius), array(0, $rs_radius, 0, $height - $radius));
foreach ($positions as $pos) {
ImageCopyResampled($corner, $img, $pos[0], $pos[1], $pos[2], $pos[3], $rs_radius, $rs_radius, $radius, $radius);
}
$lx = $ly = 0;
$i = -$rs_radius;
$y2 = -$i;
$r_2 = $rs_radius * $rs_radius;
for (; $i <= $y2; $i++) {
$y = $i;
$x = sqrt($r_2 - $y * $y);
$y += $rs_radius;
$x += $rs_radius;
ImageLine($corner, $x, $y, $rs_size, $y, $trans);
ImageLine($corner, 0, $y, $rs_size - $x, $y, $trans);
$lx = $x;
$ly = $y;
}
foreach ($positions as $i => $pos) {
ImageCopyResampled($img, $corner, $pos[2], $pos[3], $pos[0], $pos[1], $radius, $radius, $rs_radius, $rs_radius);
}
ImageDestroy($corner);
}
