public function testBase30_to_Native_Full()
{
$converter = new jSignature_Tools_Base30();
$signature = "3E13Z5Y5_1O24Z66_1O1Z3_3E2Z4";
$expected = array(array('x' => array(100, 101, 104, 99, 104), 'y' => array(50, 52, 56, 50, 44)), array('x' => array(50, 51, 48), 'y' => array(100, 102, 98)));
$actual = $converter->Base64ToNative($signature);
$this->assertEquals($expected, $actual);
}
public static function signToImage($dbData, $outFile)
{
// Get signature string from _POST
$data = str_replace('data:image/jsignature;base30,', '', $dbData);
// Create jSignature object
$signature = new \jSignature_Tools_Base30();
// Decode base30 format
$a = $signature->Base64ToNative($data);
// Create a image
$im = imagecreatetruecolor(640, 280);
// Save transparency for PNG
imagesavealpha($im, true);
// Fill background with transparency
$trans_colour = imagecolorallocatealpha($im, 255, 255, 255, 127);
imagefill($im, 0, 0, $trans_colour);
// Set pen thickness
imagesetthickness($im, 5);
// Set pen color to black
$black = imagecolorallocate($im, 0, 0, 0);
// Loop through array pairs from each signature word
for ($i = 0; $i < count($a); $i++) {
// Loop through each pair in a word
for ($j = 0; $j < count($a[$i]['x']); $j++) {
// Make sure we are not on the last coordinate in the array
if (!isset($a[$i]['x'][$j]) or !isset($a[$i]['x'][$j + 1])) {
break;
}
// Draw the line for the coordinate pair
imageline($im, $a[$i]['x'][$j], $a[$i]['y'][$j], $a[$i]['x'][$j + 1], $a[$i]['y'][$j + 1], $black);
}
}
if (file_exists($outFile)) {
unlink($outFile);
}
// Save image to a folder
if (!imagepng($im, $outFile)) {
// Removing $filename will output to browser instead of saving
die("!! Error exporting signature !!");
}
// Clean up
imagedestroy($im);
}
