PHP Draw 3D pie chart class function

The following about the PHP tutorial 3D pie chart Class drawing class function implementation principle is based on//ellipse long axis and other parameters to draw a 3D pie graphics code.

Class chart{

var $a; Oval Long Half axis
var $b; Elliptic Short Half axis
var $DataArray; Each sector of the data
var $ColorArray; The color of each pie is required to be written in hexadecimal but not preceded by 0x
For edges and shadows for black

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]; Figure out the data and

Filling back
Imagefill ($image, 0, 0, imagecolorallocate ($image, 0xFF, 0xFF, 0xFF));

    /*


* * Draw every fan


    */


$Degrees = 0;


for ($i = 0; $i &lt; $DataNumber; $i + +) {


$StartDegrees = round ($Degrees);


$Degrees + + ($this-&gt;dataarray[$i]/$DataTotal) *360);


$EndDegrees = round ($Degrees);


$percent = Number_format ($this-&gt;dataarray[$i]/$DataTotal *100, 1);


list ($R, $G, $B) =getrgb (Hexdec ($this-&gt;colorarray[$i));


$CurrentColor =imagecolorallocate ($image, $R, $G, $B);


if ($R &gt;60 and $R &lt;256) $R = $R-60;


if ($G &gt;60 and $G &lt;256) $G = $G-60;


if ($B &gt;60 and $B &lt;256) $B = $B-60;


$CurrentDarkColor =imagecolorallocate ($image, $R, $G, $B);


//Draw fan arc


Imagearc ($image, $PieCenterX, $PieCenterY, $DoubleA, $DoubleB, $StartDegrees, $EndDegrees, $CurrentColor);


//Draw a straight line


list ($ArcX, $ArcY) = Pie_point ($StartDegrees, $this-&gt;a, $this-&gt;b);


Imageline ($image, $PieCenterX, $PieCenterY, floor ($PieCenterX + $ArcX), floor ($PieCenterY + $ArcY), $CurrentColor);


//Draw a straight line


list ($ArcX, $ArcY) = Pie_point ($EndDegrees, $this-&gt;a, $this-&gt;b);


imageline ($image, $PieCenterX, $PieCenterY, ceil ($PieCenterX + $ArcX), ceil ($PieCenterY + $ArcY), $CurrentColor);


//Filled fan


$MidPoint = Round (($EndDegrees-$StartDegrees)/2) + $StartDegrees);


list ($ArcX, $ArcY) = Pie_point ($MidPoint, $this-&GT;A*3/4, $this-&GT;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);

       /Draw Shadow
        if ($ Startdegrees>=0 and $StartDegrees <=180) {
           if ($EndDegrees <=180) {    
                for ($k = 1; $k < $k + +)
                 Imagearc ($image, $PieCenterX, $PieCenterY + $k, $DoubleA, $DoubleB, $StartDegrees, $EndDegrees, $ Currentdarkcolor);
          }else{
                for ($k = 1; $k < $k + +)
                 Imagearc ($image, $PieCenterX, $PieCenterY + $k, $ Doublea, $DoubleB, $StartDegrees, 180, $CurrentDarkColor);
          }

}
}

* * To this script has already had a picture
* * Now need to send it to the browser, it is important to the hair to the browser, let it know is a GIF file. Otherwise, you can only see a bunch of weird gibberish.
*/
Output generated pictures
Header ("Content-type:image/gif");
Imagegif ($image);
Imagedestroy ($image);
}//end Drawpie ()
}//end class

Achieve

$OBJP = new chart ();
$OBJP->drawpie ();