class chart{ var $a; //橢圓長半軸
var $b; //橢圓短半軸
var $DataArray; //每個扇形的資料
var $ColorArray; //每個扇形的顏色 要求按照十六進位書寫但前面不加0x
//為邊緣及陰影為黑色 function chart($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;$i<$DataNumber;$i++) $DataTotal+=$this->DataArray[$i]; //算出資料和
//填充背境
imagefill($image, 0, 0, imagecolorallocate($image, 0xFF, 0xFF, 0xFF)); /*
** 畫每一個扇形
*/
$Degrees = 0;
for($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,$B);
//畫扇形弧
imagearc($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 $StartDegrees<=180){
if($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, $CurrentDarkColor);
} }
}
/*到此指令碼已經生了一幅映像了
**現在需要的是把它發到瀏覽器上，重要的一點是要將標題發給瀏覽器，讓它知道是一個GIF檔案。不然的話你只能看到一堆奇怪的亂碼
*/
//輸出產生的圖片
header("Content-type: image/gif");
imagegif($image);
imagedestroy($image);
}//End drawPie()
}//End class
//實現
$objp = new chart();
$objp->DrawPie(); |
