/**
* Получить путь картинки
*/
function getDirectionPath($filename)
{
$im = strpos($filename, 'png') !== false ? imagecreatefrompng($filename) : imagecreatefromjpeg($filename);
$width = imagesx($im);
$height = imagesy($im);
$directions = [];
$point = null;
$points = [];
for ($y = 0; $y < $height; $y++) {
for ($x = 0; $x < $width; $x++) {
$a1 = isDark(imagecolorat($im, $x, $y));
$a2 = $width == $x + 1 ? $a1 : isDark(imagecolorat($im, $x + 1, $y));
$a3 = $height == $y + 1 ? $a1 : isDark(imagecolorat($im, $x, $y + 1));
if ($a1 != $a2 || $a1 != $a3) {
if (VIEW_DEBAG) {
echo 1;
}
$points[] = [$x, $y];
} else {
if (VIEW_DEBAG) {
echo '.';
}
}
}
if (VIEW_DEBAG) {
echo "\n";
}
}
imagedestroy($im);
usort($points, function ($a, $b) {
$d = sqrt(pow(abs($a[0] - $b[0]), 2) + pow(abs($a[1] - $b[1]), 2));
return $a[1] > $b[1] ? -1 : 1;
});
$a = null;
while (sizeof($points) > 0) {
if (is_null($a)) {
$a = array_shift($points);
}
$min = null;
foreach ($points as $k => $b) {
$d = sqrt(pow(abs($a[0] - $b[0]), 2) + pow(abs($a[1] - $b[1]), 2));
if (is_null($min) || $min[0] > $d) {
$min = [$d, $b, $k];
}
}
unset($points[$min[2]]);
$x = $min[1][0];
$y = $min[1][1];
$d = 0;
if ($a[0] < $x && $a[1] < $y) {
$d = 1;
//'BR';
} else {
if ($a[0] == $x && $a[1] < $y) {
$d = 2;
//'B';
} else {
if ($a[0] < $x && $a[1] == $y) {
$d = 3;
//'R';
} else {
if ($a[0] < $x && $a[1] > $y) {
$d = 4;
//'TR';
} else {
if ($a[0] == $x && $a[1] > $y) {
$d = 5;
//'T';
} else {
if ($a[0] > $x && $a[1] > $y) {
$d = 6;
//'TL';
} else {
if ($a[0] > $x && $a[1] == $y) {
$d = 7;
//'L';
} else {
if ($a[0] > $x && $a[1] < $y) {
$d = 8;
//'BL';
}
}
}
}
}
}
}
}
if (sizeof($directions) == 0 || $directions[sizeof($directions) - 1] != $d) {
$directions[] = $d;
}
$a = $min[1];
}
return join('', $directions);
}
{
//return $rgb == 0;// var_dump($rgb);
$r = $rgb >> 16 & 0xff;
$g = $rgb >> 8 & 0xff;
$b = $rgb & 0xff;
// var_dump($r, $g, $b);
return $r < 127 && $g < 127 && $b < 127;
// == 0;
}
$directions = [];
$point = null;
for ($y = 0; $y < $height; $y++) {
for ($x = 0; $x < $width; $x++) {
$a1 = isDark(imagecolorat($im, $x, $y));
$a2 = $width == $x + 1 ? $a1 : isDark(imagecolorat($im, $x + 1, $y));
$a3 = $height == $y + 1 ? $a1 : isDark(imagecolorat($im, $x, $y + 1));
if ($a1 != $a2 || $a1 != $a3) {
echo 1;
if (!is_null($point)) {
$d = '';
if ($point[0] < $x && $point[1] < $y) {
$d = 'юго-восток';
} else {
if ($point[0] == $x && $point[1] < $y) {
$d = 'юг';
} else {
if ($point[0] < $x && $point[1] == $y) {
$d = 'восток';
} else {
if ($point[0] < $x && $point[1] > $y) {
$d = 'северо-восток';