Create a cool PHP Data pie chart _php tutorial

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//+------------------------+

//| Pie3dfun. php//Common Functions |

//+------------------------+

Define ("Angle_step", 5); Defines the angle step when drawing an elliptical arc

function Draw_getdarkcolor ($img, $CLR)//$CLR the corresponding dark color

{

$rgb = Imagecolorsforindex ($img, $CLR);

return Array ($rgb ["Red"]/2, $rgb ["Green"]/2, $rgb ["Blue"]/2);

}

function draw_getexy ($a, $b, $d)//$d point coordinates on the ellipse corresponding to the angle

{

$d = Deg2rad ($d);

Return Array (round ($a *cos ($d)), round ($b *sin ($d)));

}

function Draw_arc ($img, $ox, $oy, $a, $b, $SD, $ed, $CLR)//Elliptical arc function

{

$n = Ceil (($ed-$SD)/angle_step);

$d = $SD;

List ($x 0, $y 0) = draw_getexy ($a, $b, $d);

for ($i =0; $i < $n; $i + +)

{

$d = ($d +angle_step) > $ed $ed:($d +angle_step);

List ($x, $y) = Draw_getexy ($a, $b, $d);

Imageline ($img, $x 0+ $ox, $y 0+ $oy, $x + $ox, $y + $oy, $CLR);

$x 0 = $x;

$y 0 = $y;

}

}

function Draw_sector ($img, $ox, $oy, $a, $b, $SD, $ed, $CLR)//Draw slices

{

$n = Ceil (($ed-$SD)/angle_step);

$d = $SD;

List ($x 0, $y 0) = draw_getexy ($a, $b, $d);

Imageline ($img, $x 0+ $ox, $y 0+ $oy, $ox, $oy, $CLR);

for ($i =0; $i < $n; $i + +)

{

$d = ($d +angle_step) > $ed $ed:($d +angle_step);

List ($x, $y) = Draw_getexy ($a, $b, $d);

Imageline ($img, $x 0+ $ox, $y 0+ $oy, $x + $ox, $y + $oy, $CLR);

$x 0 = $x;

$y 0 = $y;

}

Imageline ($img, $x 0+ $ox, $y 0+ $oy, $ox, $oy, $CLR);

List ($x, $y) = Draw_getexy ($a/2, $b/2, ($d + $sd)/2);

Imagefill ($img, $x + $ox, $y + $oy, $CLR);

}

http://www.bkjia.com/PHPjc/446994.html www.bkjia.com true http://www.bkjia.com/PHPjc/446994.html techarticle Source code://+------------------------+//| pie3dfun. php//Common Functions | +------------------------+ define ("Angle_step", 5); Defines the angle step function dra when drawing an elliptical arc ...

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