-
-
- define("ANGLE_STEP", 5); //定義畫橢圓弧時的角度步長
-
- function draw_getgetkcolor($ img,$clr) //求$clr對應的暗色
- {
- $rgb = imagecolorsforindex($img,$clr);
- return array($rgb["red"]/2,$rgb ["green"]/2,$rgb["blue"]/2);
- }
-
- function draw_getexy($a, $b, $d) //求角度$d對應的橢圓上的點座標
- {
- $d = deg2rad($d);
- return array(round($a*Cos($d)), round($b*Sin($d))) ;
- }
-
- function draw_arc($img,$ox,$oy,$a,$b,$sd,$ed,$clr) //橢圓弧函數
- {
- $n = ceil(($ed-$sd)/ANGLE_STEP);
- $d = $sd;
- list($x0,$y0) = draw_getexy($a,$b,$d);
- for($i=0; $i {
- $d = ($d ANGLE_STEP)>$ed?$ed:($d ANGLE_STEP);
- list ($x, $y) = draw_getexy($a, $b, $d);
- imageline($img, $x0 $ox, $y0 $oy, $x $ox, $y $oy, $clr );
- $x0 = $x;
- $y0 = $y;
- }
- }
-
- function draw_sector($img, $ox, $oy, $a, $ b, $sd, $ed, $clr) //畫扇面
- {
- $n = ceil(($ed-$sd)/ANGLE_STEP);
- $d = $sd;
- list($x0,$y0) = draw_getexy($a, $b, $d);
- imageline($img, $x0 $ox, $y0 $oy, $ox, $oy, $clr);
- for($i=0; $i {
- $d = ($d ANGLE_STEP)>$ed?$ed:($d ANGLE_STEP);
- list ($x, $y) = draw_getexy($a, $b, $d);
- imageline($img, $x0 $ox, $y0 $oy, $x $ox, $y $oy, $clr );
- $x0 = $x;
- $y0 = $y;
- }
- imageline($img, $x0 $ox, $y0 $oy, $ox, $oy, $clr );
- list($x, $y) = draw_getexy($a/2, $b/2, ($d $sd)/2);
- imagefill($img, $x $ox, $ y $oy, $clr);
- }
-
- function draw_sector3d($img, $ox, $oy, $a, $b, $v, $sd, $ed, $clr) // 3d扇面
- {
- draw_sector($img, $ox, $oy, $a, $b, $sd, $ed, $clr);
- if($sd {
- list($R, $G, $B) = draw_getdarkcolor($img, $clr);
- $clr=imagecolorallocate($img, $R, $G, $B);
- if( $ed>180) $ed = 180;
- list($sx, $sy) = draw_getexy($a,$b,$sd);
- $sx = $ox;
- $sy = $ oy;
- list($ex, $ey) = draw_getexy($a, $b, $ed);
- $ex = $ox;
- $ey = $oy;
- imageline($ img, $sx, $sy, $sx, $sy $v, $clr);
- imageline($img, $ex, $ey, $ex, $ey $v, $clr);
- draw_arc ($img, $ox, $oy $v, $a, $b, $sd, $ed, $clr);
- list($sx, $sy) = draw_getexy($a, $b, ($ sd $ed)/2);
- $sy = $oy $v/2;
- $sx = $ox;
- imagefill($img, $sx, $sy, $clr);
- }
- }
-
- function draw_getindexcolor($img, $clr) //RBG轉索引色
- {
- $R = ($clr>>16) & 0xff;
- $G = ($clr>>8)& 0xff;
- $B = ($clr) & 0xff;
- return imagecolorallocate($img, $R, $G, $B);
- }
-
- // 繪圖主函數,並輸出圖片
- // $datLst 為資料數組, $datLst 為標籤數組, $datLst 為顏色數組
- // 以上三個數組的維數應該相等
- function draw_img($datLst,$labLst,$clrLst,$a=250,$b=120,$v=20,$font=10)
- {
- $ox = 5 $a;
- $oy = 5 $b;
- $fw = imagefontwidth($font);
- $fh = imagefontheight($font);
-
- $n = count($datLst);/ /資料項數
-
- $w = 10 $a*2;
- $h = 10 $b*2 $v ($fh 2)*$n;
-
- $img = imagecreate($w, $h);
-
- //轉RGB為索引色
- for($i=0; $i $clrLst[$i ] = draw_getindexcolor($img,$clrLst[$i]);
-
- $clrbk = imagecolorallocate($img, 0xff, 0xff, 0xff);
- $allclrt = imagecolor. , 0x00);
-
- //填充背景色
- imagefill($img, 0, 0, $clrbk);
-
- //求和
- $tot = 0
- //求和
- $tot = 0;
- for($i=0; $i $tot = $datLst[$i];
-
- $sd = 0;
- $ed = 0;
- $ly = 10 $b*2 $v;
- for($i=0; $i {
- $sd = $ed;
- $ ed = $datLst[$i]/$tot*360;
-
- //畫圓餅
- draw_sector3d($img, $ox, $oy, $a, $b, $v, $sd , $ed, $clrLst[$i]); //$sd,$ed,$clrLst[$i]);
-
- //畫標籤
- imagefilledrectangle($img, 5, $ly , 5 $fw, $ly $fh, $clrLst[$i]);
- imagerectangle($img, 5, $ly, 5 $fw, $ly $fh, $clrt);
- //imagestring ($img, $font, 5 2*$fw, $ly, $labLst[$i].":".$datLst[$i]."(".(round(10000*($datLst[$i] /$tot))/100)."%)", $clrt);
-
- $str = iconv("GB2312", "UTF-8", $labLst[$i]);
- ImageTTFText($img, $font, 0, 5 2*$fw, $ly 13, $clrt, "./simsun.ttf", $str.":".$datLst[$i]."(".( round(10000*($datLst[$i]/$tot))/100)."%)");
- $ly = $fh 2;
- }
-
- //輸出圖形
- header("Content-type: image/png");
-
- //輸出產生的圖片
- $imgFileName = "temp/".time().".png";
- imagepng($img,$imgFileName);
- echo '';
} ?> 複製程式碼
2、呼叫方法:
-
-
-
-
- require_once ("piefunction.php");
-
- $datLst = array(10,110,3000); 🎜>$labLst = array("好評","中評","負評"); //標籤
- $clrLst = array(0x99ff00, 0xff6666, 0x0099ff);
-
- ?>
複製程式碼
說明:
只要資料的數量與後面的標籤,顏色數一致就可以輸出正確的餅狀圖效果了。 |