os-sim/www/vulnmeter/inc/sector.php
<?php
require('chinese.php');

class PDF_Sector extends PDF_Chinese
{
	function Sector($xc, $yc, $r, $a, $b, $style='FD', $cw=true, $o=90)
	{
		if($cw){
			$d = $b;
			$b = $o - $a;
			$a = $o - $d;
		}else{
			$b += $o;
			$a += $o;
		}
		$a = ($a%360)+360;
		$b = ($b%360)+360;
		if ($a > $b)
			$b +=360;
		$b = $b/360*2*M_PI;
		$a = $a/360*2*M_PI;
		$d = $b-$a;
		if ($d == 0 )
			$d =2*M_PI;
		$k = $this->k;
		$hp = $this->h;
		if($style=='F')
			$op='f';
		elseif($style=='FD' or $style=='DF')
			$op='b';
		else
			$op='s';
		if (sin($d/2))
			$MyArc = 4/3*(1-cos($d/2))/sin($d/2)*$r;
		//first put the center
		$this->_out(sprintf('%.2f %.2f m',($xc)*$k,($hp-$yc)*$k));
		//put the first point
		$this->_out(sprintf('%.2f %.2f l',($xc+$r*cos($a))*$k,(($hp-($yc-$r*sin($a)))*$k)));
		//draw the arc
		if ($d < M_PI/2){
			$this->_Arc($xc+$r*cos($a)+$MyArc*cos(M_PI/2+$a),
						$yc-$r*sin($a)-$MyArc*sin(M_PI/2+$a),
						$xc+$r*cos($b)+$MyArc*cos($b-M_PI/2),
						$yc-$r*sin($b)-$MyArc*sin($b-M_PI/2),
						$xc+$r*cos($b),
						$yc-$r*sin($b)
						);
		}else{
			$b = $a + $d/4;
			$MyArc = 4/3*(1-cos($d/8))/sin($d/8)*$r;
			$this->_Arc($xc+$r*cos($a)+$MyArc*cos(M_PI/2+$a),
						$yc-$r*sin($a)-$MyArc*sin(M_PI/2+$a),
						$xc+$r*cos($b)+$MyArc*cos($b-M_PI/2),
						$yc-$r*sin($b)-$MyArc*sin($b-M_PI/2),
						$xc+$r*cos($b),
						$yc-$r*sin($b)
						);
			$a = $b;
			$b = $a + $d/4;
			$this->_Arc($xc+$r*cos($a)+$MyArc*cos(M_PI/2+$a),
						$yc-$r*sin($a)-$MyArc*sin(M_PI/2+$a),
						$xc+$r*cos($b)+$MyArc*cos($b-M_PI/2),
						$yc-$r*sin($b)-$MyArc*sin($b-M_PI/2),
						$xc+$r*cos($b),
						$yc-$r*sin($b)
						);
			$a = $b;
			$b = $a + $d/4;
			$this->_Arc($xc+$r*cos($a)+$MyArc*cos(M_PI/2+$a),
						$yc-$r*sin($a)-$MyArc*sin(M_PI/2+$a),
						$xc+$r*cos($b)+$MyArc*cos($b-M_PI/2),
						$yc-$r*sin($b)-$MyArc*sin($b-M_PI/2),
						$xc+$r*cos($b),
						$yc-$r*sin($b)
						);
			$a = $b;
			$b = $a + $d/4;
			$this->_Arc($xc+$r*cos($a)+$MyArc*cos(M_PI/2+$a),
						$yc-$r*sin($a)-$MyArc*sin(M_PI/2+$a),
						$xc+$r*cos($b)+$MyArc*cos($b-M_PI/2),
						$yc-$r*sin($b)-$MyArc*sin($b-M_PI/2),
						$xc+$r*cos($b),
						$yc-$r*sin($b)
						);
		}
		//terminate drawing
		$this->_out($op);
	}

	function _Arc($x1, $y1, $x2, $y2, $x3, $y3 )
	{
		$h = $this->h;
		$this->_out(sprintf('%.2f %.2f %.2f %.2f %.2f %.2f c',
			$x1*$this->k,
			($h-$y1)*$this->k,
			$x2*$this->k,
			($h-$y2)*$this->k,
			$x3*$this->k,
			($h-$y3)*$this->k));
	}
}
?>
