求一个饼状图或柱状图php生成类或例子

时间：2006/7/19 6:10:04

作者：佚名

人气：268

PHP代码:--------------------------------------------------------------------------------

/*-------------------------------------------------------------------------*/

//

// Module Name: 一个3D的饼图类

//

// Author:Avenger(avenger@php.net) 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

//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) {

$this->a=$pa;

$this->b=$pb;

$this->DataArray=split(",",$sData);

$this->ColorArray=split(",",$sColor);

$this->Fsize=$fontsize;

}

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(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, 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($image,$fsize,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);

}

}

}

//输出生成的图片

imagepng($image,'consture.png');

imagedestroy($image);

}//End drawPie()

}//End class

$pie = new Pie3d;

$pie->Pie3d($pa=300,$pb=150,$sData="100,200,300,400,500", $sColor="ee00ff,dd0000,cccccc,ccff00,ddddaa",$fontsize=5);

$pie->DrawPie();

echo '';

?>