PHP Object Programming Implementation 3D pie chart _php Tutorial

Common functions
Convert the angle to radians
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, $B));
}
Gets the value of the X, Y point on an ellipse with an elliptical heart (0,0)
function Pie_point ($deg, $va, $VB) {
$x = cos (DEG2ARC ($deg)) * $VA;
$y = sin (Deg2arc ($deg)) * $VB;
Return (Array ($x, $y));
}
3D Pie Chart Class
Class pie3d{
var $a; Elliptical Long Half axis
var $b; Elliptic Short Half axis
var $DataArray; Each sector of the data
var $ColorArray; The color of each sector is required to be written in hexadecimal but not 0x in front
Black for edges and shadows
function Pie3d ($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);

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