<?php

// a twist on the above radar screen. 
// This makes random colored spokes from a center point

    $width =  400;
    $height = 400;
   
    $image = new Imagick();
    $image->newImage( $width, $height, new ImagickPixel( 'wheat' ) );
    $draw = new ImagickDraw();
   //$draw->setStrokeColor( new ImagickPixel( 'black' ) );

    $rx = $width / 2;
    $ry = $height / 2;
    $total = 2*M_PI;
    $part = $total / 16;
    while( $total > 0  )
    {
        $ex = $rx +$rx * sin( $total );
        $ey = $ry +$ry * cos( $total );
        $draw->line  ( $rx, $ry, $ex, $ey );
        $total -= $part;

    // We need three HEX numbers to create an RGB color code like '#FF33DD'.

    $draw->setStrokeColor( get_random_color() );
    }
    $image->drawImage( $draw );
    $image->setImageFormat( "png" );
    header( "Content-Type: image/png" );
    echo $image;
    exit;

function get_random_color()        // Thanks to Greg R. for this nice little function.
{
    for ($i = 0; $i<6; $i++)
    {
        $c .=  dechex(rand(0,15));
    }
    return "#$c";
} 
?>