/**
* @param GDImage_Image $image
* @param int $radius
* @param int $color
* @param int $smoothness
* @return GDImage_Image
*/
function execute($image, $radius, $color, $smoothness, $corners)
{
if ($smoothness < 1) {
$sample_ratio = 1;
} elseif ($smoothness > 16) {
$sample_ratio = 16;
} else {
$sample_ratio = $smoothness;
}
$corner = GDImage::createTrueColorImage($radius * $sample_ratio, $radius * $sample_ratio);
if ($color === null) {
imagepalettecopy($corner->getHandle(), $image->getHandle());
$bg_color = $corner->allocateColor(0, 0, 0);
$corner->fill(0, 0, $bg_color);
$fg_color = $corner->allocateColor(255, 255, 255);
$corner->getCanvas()->filledEllipse($radius * $sample_ratio, $radius * $sample_ratio, $radius * 2 * $sample_ratio, $radius * 2 * $sample_ratio, $fg_color);
$corner = $corner->resize($radius, $radius);
$result = $image->asTrueColor();
$tc = $result->getTransparentColor();
if ($tc == -1) {
$tc = $result->allocateColorAlpha(255, 255, 255, 127);
imagecolortransparent($result->getHandle(), $tc);
$result->setTransparentColor($tc);
}
if ($corners & GDImage::SIDE_TOP_LEFT || $corners & GDImage::SIDE_LEFT || $corners & GDImage::SIDE_TOP) {
$result = $result->applyMask($corner, -1, -1);
}
$corner = $corner->rotate(90);
if ($corners & GDImage::SIDE_TOP_RIGHT || $corners & GDImage::SIDE_TOP || $corners & GDImage::SIDE_RIGHT) {
$result = $result->applyMask($corner, $result->getWidth() - $corner->getWidth() + 1, -1, 100);
}
$corner = $corner->rotate(90);
if ($corners & GDImage::SIDE_BOTTOM_RIGHT || $corners & GDImage::SIDE_RIGHT || $corners & GDImage::SIDE_BOTTOM) {
$result = $result->applyMask($corner, $result->getWidth() - $corner->getWidth() + 1, $result->getHeight() - $corner->getHeight() + 1, 100);
}
$corner = $corner->rotate(90);
if ($corners & GDImage::SIDE_BOTTOM_LEFT || $corners & GDImage::SIDE_LEFT || $corners & GDImage::SIDE_BOTTOM) {
$result = $result->applyMask($corner, -1, $result->getHeight() - $corner->getHeight() + 1, 100);
}
return $result;
} else {
$bg_color = $color;
$corner->fill(0, 0, $bg_color);
$fg_color = $corner->allocateColorAlpha(127, 127, 127, 127);
$corner->getCanvas()->filledEllipse($radius * $sample_ratio, $radius * $sample_ratio, $radius * 2 * $sample_ratio, $radius * 2 * $sample_ratio, $fg_color);
$corner = $corner->resize($radius, $radius);
$result = $image->copy();
if ($corners & GDImage::SIDE_TOP_LEFT || $corners & GDImage::SIDE_LEFT || $corners & GDImage::SIDE_TOP) {
$result = $image->merge($corner, -1, -1, 100);
}
$corner = $corner->rotate(90);
if ($corners & GDImage::SIDE_TOP_RIGHT || $corners & GDImage::SIDE_TOP || $corners & GDImage::SIDE_RIGHT) {
$result = $result->merge($corner, $result->getWidth() - $corner->getWidth() + 1, -1, 100);
}
$corner = $corner->rotate(90);
if ($corners & GDImage::SIDE_BOTTOM_RIGHT || $corners & GDImage::SIDE_RIGHT || $corners & GDImage::SIDE_BOTTOM) {
$result = $result->merge($corner, $result->getWidth() - $corner->getWidth() + 1, $result->getHeight() - $corner->getHeight() + 1, 100);
}
$corner = $corner->rotate(90);
if ($corners & GDImage::SIDE_BOTTOM_LEFT || $corners & GDImage::SIDE_LEFT || $corners & GDImage::SIDE_BOTTOM) {
$result = $result->merge($corner, -1, $result->getHeight() - $corner->getHeight() + 1, 100);
}
return $result;
}
}