<?php //公用函数 //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 $ColorArray; //每个扇形的颜色 要求按照十六进制书写但前面不加0x //为边缘及阴影为黑色 function Pie3d($pa=100,$pb=60,$sData="100,200,300,400,500", $sColor="ee00ff,dd0000,cccccc,ccff00,00ccff") { $this->a=$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;$i<$DataNumber;$i++) $DataTotal+=$this->DataArray[$i]; //算出数据和 //填充背境 imagefill($image, 0, 0, imagecolorallocate($image, 0xFF, 0xFF, 0xFF)); /* ** 画每一个扇形 */ $Degrees = 0; for($i = 0; $i < $DataNumber; $i++){ $StartDegrees = round($Degrees); $Degrees += (($this->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 $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($image,2,floor($PieCenterX + $ArcX-5),floor($PieCenterY + $ArcY-5),$percent."%",$colorBorder); //画阴影 if ($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, $CurrentDarkColor); } } } /*到此脚本已经生了一幅图像了 **现在需要的是把它发到浏览器上，重要的一点是要将标头发给浏览器，让它知道是一个GIF文件。不然的话你只能看到一堆奇怪的乱码 */ //输出生成的图片 header("Content-type: image/gif"); imagegif($image); imagedestroy($image); }//End drawPie() }//End class //实现 $objp = new Pie3d(); $objp->DrawPie(); ?> 【本文版权归作者与奥索网共同拥有，如需转载，请注明作者及出处】
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