php 3D饼图类绘制类函数

下面关于php 3d饼图类绘制类函数实现原理是根据//椭圆长半轴 等参数绘制一个3d饼图形的代码。

下面关于php教程 3d饼图类绘制类函数实现原理是根据//椭圆长半轴 等参数绘制一个3d饼图形的代码。

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class chart{ var $a; //椭圆长半轴 var $b; //椭圆短半轴 var $DataArray;  //每个扇形的数据 var $ColorArray; //每个扇形的颜色 要求按照十六进制书写但前面不加0x //为边缘及阴影为黑色 function chart($pa=100,$pb=60,$sData="100,200,300,400,500,300", $sColor="ee00ff,dd0000,cccccc,ccff00,00ccff,ccff00") {     $this->a=$pa;     $this->b=$pb;     $this->DataArray=split(",",$sData);     $this->ColorArray=split(",",$sColor); } 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(){     $image=imagecreate($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(0);     $colorBorder=imagecolorallocate($image,$R,$G,$B);     $DataNumber=count($this->DataArray);          //$DataTotal     for($i=0;$iDataArray[$i]; //算出数据和          //填充背境     imagefill($image, 0, 0, imagecolorallocate($image, 0xFF, 0xFF, 0xFF));     /*     ** 画每一个扇形     */     $Degrees = 0;     for($i = 0; $i DataArray[$i]/$DataTotal)*360);         $EndDegrees = round($Degrees);         $percent = number_format($this->DataArray[$i]/$DataTotal*100, 1);          list($R,$G,$B)=getRGB(hexdec($this->ColorArray[$i]));         $CurrentColor=imagecolorallocate($image,$R,$G,$B);         if ($R>60 and $R60 and $G60 and $Ba , $this->b);         imageline($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($image,2,floor($PieCenterX + $ArcX-5),floor($PieCenterY + $ArcY-5),$percent."%",$colorBorder);         //画阴影         if ($StartDegrees>=0 and $StartDegrees