PHP對(duì)象編程實(shí)現(xiàn)3D餅圖
Jun 21, 2016 am 09:15 AM編程|餅圖|對(duì)象
//公用函數(shù)
//把角度轉(zhuǎn)換為弧度
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,$B));
}
// 取得在橢圓心為(0,0)的橢圓上 x,y點(diǎn)的值
function pie_point($deg,$va,$vb){
$x= cos(deg2Arc($deg)) * $va;
$y= sin(deg2Arc($deg)) * $vb;
return (array($x, $y));
}
//3D餅圖類
class Pie3d{
var $a; //橢圓長(zhǎng)半軸
var $b; //橢圓短半軸
var $DataArray; //每個(gè)扇形的數(shù)據(jù)
var $ColorArray; //每個(gè)扇形的顏色 要求按照十六進(jìn)制書寫但前面不加0x
//為邊緣及陰影為黑色
function Pie3d($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;$iDataArray[$i]; //算出數(shù)據(jù)和
//填充背境
imagefill($image, 0, 0, imagecolorallocate($image, 0xFF, 0xFF, 0xFF));
/*
** 畫每一個(gè)扇形
*/
$Degrees = 0;
for($i = 0; $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 $R if ($G>60 and $G if ($B>60 and $B $CurrentDarkColor=imagecolorallocate($image,$R,$G,$B);
//畫扇形弧
imagearc($image,$PieCenterX,$PieCenterY,$DoubleA,$DoubleB,$StartDegrees,$EndDegrees,$CurrentColor);
//畫直線
list($ArcX, $ArcY) = pie_point($StartDegrees , $this->a , $this->b);
imageline($image,$PieCenterX,$PieCenterY,floor($PieCenterX + $ArcX),floor($PieCenterY + $ArcY),$CurrentColor);
//畫直線
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."%",$colorBorder);
//畫陰影
if ($StartDegrees>=0 and $StartDegrees if($EndDegrees for($k = 1; $k imagearc($image,$PieCenterX, $PieCenterY+$k,$DoubleA, $DoubleB, $StartDegrees, $EndDegrees, $CurrentDarkColor);
}else{
for($k = 1; $k imagearc($image,$PieCenterX, $PieCenterY+$k,$DoubleA, $DoubleB, $StartDegrees, 180, $CurrentDarkColor);
}
}
}
/*到此腳本已經(jīng)生了一幅圖像了
**現(xiàn)在需要的是把它發(fā)到瀏覽器上,重要的一點(diǎn)是要將標(biāo)頭發(fā)給瀏覽器,讓它知道是一個(gè)GIF文件。不然的話你只能看到一堆奇怪的亂碼
*/
//輸出生成的圖片
header("Content-type: image/gif");
imagegif($image);
imagedestroy($image);
}//End drawPie()
}//End class
//實(shí)現(xiàn)
$objp = new Pie3d();
$objp->DrawPie();
?>

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