function findRotation($p, $boardX, $solutions)
{
$tmp = rotateBoard($p, $boardX);
// Rotated 90
if (in_array($tmp, $solutions)) {
} else {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $boardX);
// Rotated 180
if (in_array($tmp, $solutions)) {
} else {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $boardX);
// Rotated 270
if (in_array($tmp, $solutions)) {
} else {
$solutions[] = $tmp;
}
// Reflected
$tmp = array_reverse($p);
if (in_array($tmp, $solutions)) {
} else {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $boardX);
// Reflected and Rotated 90
if (in_array($tmp, $solutions)) {
} else {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $boardX);
// Reflected and Rotated 180
if (in_array($tmp, $solutions)) {
} else {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $boardX);
// Reflected and Rotated 270
if (in_array($tmp, $solutions)) {
} else {
$solutions[] = $tmp;
}
return $solutions;
}
/**
* find rotations of a solution
* @param array $row
* @param int $board
* @param array $solutions
* @return array
*/
function findRotation($row, $board, $solutions)
{
$tmp = rotateBoard($row, $board);
// Rotated 90
if (!in_array($tmp, $solutions)) {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $board);
// Rotated 180
if (!in_array($tmp, $solutions)) {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $board);
// Rotated 270
if (!in_array($tmp, $solutions)) {
$solutions[] = $tmp;
}
$tmp = array_reverse($row);
// Reflected
if (!in_array($tmp, $solutions)) {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $board);
// Reflected and Rotated 90
if (!in_array($tmp, $solutions)) {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $board);
// Reflected and Rotated 180
if (!in_array($tmp, $solutions)) {
$solutions[] = $tmp;
}
$tmp = rotateBoard($tmp, $board);
// Reflected and Rotated 270
if (!in_array($tmp, $solutions)) {
$solutions[] = $tmp;
}
return $solutions;
}