饼图

<?
/*-------------------------------------------------------------------------*/
//
//   Module Name: 一个3D的饼图类
//
//   Author:Avenger() Last Modify: 2002-10-30 11:19
//   Copyright (c) 2002 by Avenger
/*-------------------------------------------------------------------------*/

//公用函数部分
//把角度转换为弧度
function deg2Arc($degrees) {
 return($degrees * (pi()/180.0));
}
//RGB
function getRGB($color){
 $R=($color>>16) & 0xff;
 $G=($color>>8) & 0xff;
 $B=($color) & 0xff;
 return (array($R,$G,$B));
}

// 取得在椭圆心为（0，0）的椭圆上 x,y点的值
function pie_point($deg,$va,$vb){
 $x= cos(deg2Arc($deg)) * $va;
 $y= sin(deg2Arc($deg)) * $vb;
 return (array($x, $y));
}

//3D饼图类
class Pie3d{
 var $a; //椭圆长半轴
 var $b; //椭圆短半轴
 var $DataArray; //每个扇形的数据
 var $ColorArray; //每个扇形的颜色 要求按照十六进制书写但前面不加0x
 var $Fize;    //字体大小
 var $Fontcolor; //字体的颜色
 //为边缘及阴影为黑色

 function Pie3d($pa=60,$pb=30,$sData="100,200,300,400,500", $sColor="ee00ff,dd0000,cccccc,ccff00,00ccff",$fontsize=1,$fontcolor="000000") {
  $this->a=$pa;
  $this->b=$pb;
  $this->DataArray=split(",",$sData);
  $this->ColorArray=split(",",$sColor);
  $this->Fsize=$fontsize;
  $this->Fontcolor=$fontcolor;
  $this->Bodercolor=$bordercolor;
 }
 
 function setA($v){
  $this->a=$v;
 }
 
 function getA(){
  return $this->a;
 }
 
 function setB($v){
  $this->b=$v;
 }
 
 function getB(){
  return $this->b;
 }
 
 function setDataArray($v){
  $this->DataArray=split(",",$v);
 }
 
 function getDataArray($v){
  return $this->DataArray;
 }
 
 function setColorArray($v){
  $this->ColorArray=split(",",$v);
 }
 
 function getColorArray(){
  return $this->ColorArray;
 }
 
 function DrawPie(){
     $fsize=$this->Fsize;
     $image=imagecreate($this->a*2+40,$this->b*2+40);
     $PieCenterX=$this->a+10;
     $PieCenterY=$this->b+10;
     $DoubleA=$this->a*2;
     $DoubleB=$this->b*2;
      list($R,$G,$B)=getRGB(hexdec($this->Bodercolor));
     $colorBorder=imagecolorallocate($image,$R,$G,$B);
     list($R,$G,$B)=getRGB(hexdec($this->Fontcolor));
     $strColor =imagecolorallocate($image,$R,$G,$B);
     $DataNumber=count($this->DataArray);
     //$DataTotal
     for($i=0;$i<$DataNumber;$i++) $DataTotal+=$this->DataArray[$i]; //算出数据和
        //填充背景
         imagefill($image, 0, 0, imagecolorallocate($image, 255, 255, 255));
     /*
     ** 画每一个扇形
     */
     $Degrees = 0;
     for ($i = 0; $i < $DataNumber; $i++) {
         $StartDegrees = round($Degrees);
         $Degrees += (($this->DataArray[$i]/$DataTotal)*360);
         $EndDegrees = round($Degrees);
         $percent = number_format($this->DataArray[$i]/$DataTotal*100, 2);
         list($R,$G,$B)=getRGB(hexdec($this->ColorArray[$i]));
         $CurrentColor=imagecolorallocate($image,$R,$G,$B);
         if ($R>60 and $R<256) $R=$R-60;
         if ($G>60 and $G<256) $G=$G-60;
         if ($B>60 and $B<256) $B=$B-60;
         $CurrentDarkColor=imagecolorallocate($image,$R,$G,$B);
         //画扇形弧
         imagearc($image,$PieCenterX,$PieCenterY,$DoubleA,$DoubleB,$StartDegrees,$EndDegrees,$CurrentColor);
         //画直线
         list($ArcX, $ArcY) = pie_point($StartDegrees , $this->a , $this->b);
         imageline($image,$PieCenterX,$PieCenterY,floor($PieCenterX + $ArcX),floor($PieCenterY + $ArcY),$CurrentColor);
         //画直线
         list($ArcX, $ArcY) = pie_point($EndDegrees,$this->a , $this->b);
         imageline($image,$PieCenterX,$PieCenterY,ceil($PieCenterX + $ArcX),ceil($PieCenterY + $ArcY),$CurrentColor);
         //填充扇形
         $MidPoint = round((($EndDegrees - $StartDegrees)/2) + $StartDegrees);
         list($ArcX, $ArcY) = Pie_point($MidPoint, $this->a*3/4 , $this->b*3/4);
         imagefilltoborder($image,floor($PieCenterX + $ArcX),floor($PieCenterY + $ArcY),$CurrentColor,$CurrentColor);
         imagestring($image,$fsize,floor($PieCenterX + $ArcX-5),floor($PieCenterY + $ArcY-5),$percent."%",$strColor);
         //画阴影
      
         if ($StartDegrees>=0 and $StartDegrees<=180){
             if($EndDegrees<=180){
                 for($k = 1; $k < 15; $k++)
                     imagearc($image,$PieCenterX, $PieCenterY+$k,$DoubleA, $DoubleB, $StartDegrees, $EndDegrees, $CurrentDarkColor);
             }else{
                 for($k = 1; $k < 15; $k++)
                     imagearc($image,$PieCenterX, $PieCenterY+$k,$DoubleA, $DoubleB, $StartDegrees, 180, $CurrentDarkColor);
             }
         }
       
     }
     //输出生成的图片
     imagepng($image,'http://www.pushad.com/Info/consture.png');
     imagedestroy($image);
 }//End drawPie()
}//End class

$pie = new Pie3d;
$pie->Pie3d($pa=80,$pb=70,$sData="100,200,300,400,500,600,700", $sColor="ee00ff,dd0000,cccccc,ccff00,ddddaa,666666,000000",$fontsize=3,$fontcloor="FF0000");
$pie->DrawPie();
echo '<img src="http://www.pushad.com/Info/consture.png" border=0 alt="交易分析图">';
?>