/**
* Important!
* Make sure the cache directory is writable
*/
public static function buildCache()
{
static::markTime('before_build_cache');
$mask = new Mask();
for ($a = 1; $a <= Enum::QRSPEC_VERSION_MAX; $a++) {
$frame = Specifications::newFrame($a);
$cache_dir = static::getCacheDir();
$fileName = $cache_dir . 'frame_' . $a . '.png';
Image::png(static::binarize($frame), $fileName, 1, 0);
$width = count($frame);
$bitMask = array_fill(0, $width, array_fill(0, $width, 0));
for ($maskNo = 0; $maskNo < 8; $maskNo++) {
$mask->makeMaskNo($maskNo, $width, $frame, $bitMask, true);
}
}
static::markTime('after_build_cache');
}
