PHP对象编程实现3D饼图
PHP对象编程实现3D饼图,PHP对象编程实现3D饼图
//公用函数
//把角度转换为弧度
function deg2Arc($degrees) {
return($degrees * (pi()/180.0));
}
//RGB
function getRGB($color){
$R=($color16) & 0xff;
$G=($color8) & 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,$B);
if ($R60 and $R<256) $R=$R-60;
if ($G60 and $G<256) $G=$G-60;
&nb