function generate_mandelbrot($fname, $size, $min, $max, $iterations)
{
$img = ImageCreate($size[0], $size[1]);
$colors = array();
$colors['inside'] = imagecolorallocate($img, 0, 0, 0);
Profiler::startTimer("palette");
$palette = imagecreatefrompng("palette.png");
for ($i = 0; $i < imagesx($palette); $i++) {
$rgb = imagecolorat($palette, $i, 0);
$colors[$i] = imagecolorallocate($img, $rgb >> 16 & 0xff, $rgb >> 8 & 0xff, $rgb & 0xff);
}
Profiler::stopTimer("palette");
Profiler::startTimer("mainloop");
for ($i = 0; $i < $size[0]; $i++) {
for ($j = 0; $j < $size[1]; $j++) {
Profiler::startTimer("math");
$x = $min[0] + $i * (($max[0] - $min[0]) / ($size[0] - 1));
$y = $min[1] + $j * (($max[1] - $min[1]) / ($size[1] - 1));
$iteration = 0;
$z0 = 0;
$z1 = 0;
$x2 = $y2 = 0;
while ($iteration <= $iterations && $x2 + $y2 <= 4) {
$z1 = 2 * $z0 * $z1 + $y;
$z0 = $x2 - $y2 + $x;
$x2 = $z0 * $z0;
$y2 = $z1 * $z1;
$iteration++;
}
Profiler::stopTimer("math");
Profiler::startTimer("setpixel");
$color = $colors[$iteration == $iterations ? 'inside' : $iteration];
ImageSetPixel($img, $i, $j, $color);
Profiler::stopTimer("setpixel");
}
}
Profiler::stopTimer("mainloop");
Profiler::startTimer("saveimage");
ImagePNG($img, $fname);
Profiler::stopTimer("saveimage");
//print Profiler::display();
}
// Load console scriptfiles
/* ========================= */
$files = GetSubfiles("$abspath/cscripts");
foreach ($files as $file)
require_once("$abspath/cscripts/$file");
/* ========================= */
// Start session
/* ========================= */
require_once("session.php");
require_once("system/links.php");
$prof->stopTimer( "include" );
$prof->startTimer( "database" );
/* ========================= */
// Connect to database
/* ========================= */
if (($str = db_connect()) !== true)
echo "Failed to connect to database!";
$prof->stopTimer( "database" );
/* ========================= */
// Set initial data
/* ========================= */
if (!isset($_SESSION['murrix']['root_id']))
$_SESSION['murrix']['root_id'] = getSetting("ROOT_NODE_ID", 1, "any");
