/**
* Draw an ellipse
*
* Parameter array:
* 'x' : int X center point
* 'y' : int Y center point
* 'rx' : int X radius
* 'ry' : int Y radius
* 'fill' : mixed [optional] The fill color
* 'line' : mixed [optional] The line color
* 'url' : string [optional] Target URL
*
* @param array $params Parameter array
*
* @return void
*/
function ellipse($params)
{
$x = $this->_getX($params['x']);
$y = $this->_getY($params['y']);
$rx = $this->_getX($params['rx']);
$ry = $this->_getY($params['ry']);
// calculate scale factors
$scaleX = 1.0;
$scaleY = 1.0;
$moveX = 0;
$moveY = 0;
if ($rx > $ry) {
$scaleY = $ry / $rx;
$moveY = $ry * (1 - $scaleY);
} elseif ($rx < $ry) {
$scaleX = $rx / $ry;
$moveX = $rx * (1 - $scaleX);
}
$fillColor = isset($params['fill']) ? $params['fill'] : false;
$lineColor = isset($params['line']) ? $params['line'] : false;
$fillColor = $this->_getFillStyle($fillColor);
$lineColor = $this->_getLineStyle($lineColor);
$shape = new SWFShape();
$shape->setRightFill($fillColor[0], $fillColor[1], $fillColor[2]);
$shape->movePenTo($x, $y);
$shape->setLine(1, $lineColor[0], $lineColor[1], $lineColor[2]);
if (count($fillColor)) {
$shape->setRightFill($fillColor[0], $fillColor[1], $fillColor[2]);
}
$shape->drawCircle(max($rx, $ry));
if (isset($params['url'])) {
$button = new SWFButton();
$button->addShape($shape, SWFBUTTON_HIT | SWFBUTTON_UP | SWFBUTTON_DOWN | SWFBUTTON_OVER);
$button->addAction(new SWFAction("getURL('{$params['url']}');"), SWFBUTTON_MOUSEUP);
$ellipse = $this->_canvas->add($button);
} else {
$ellipse = $this->_canvas->add($shape);
}
$ellipse->move($moveX, $moveY);
$ellipse->scaleTo($scaleX, $scaleY);
parent::ellipse($params);
}