protected function traverseRow(Matrix $matrix, $rotatedMatrix, $rowIndex)
{
for ($columnIndex = 0, $width = $matrix->getWidth(); $columnIndex < $width; $columnIndex++) {
if (!isset($rotatedMatrix[$rowIndex]) || !isset($rotatedMatrix[$columnIndex])) {
$rotatedMatrix[$columnIndex] = [];
}
$rotatedMatrix[$columnIndex] = $this->addValueToRow($rotatedMatrix[$columnIndex], $this->getMatrixValue($matrix, $rowIndex, $columnIndex));
}
return $rotatedMatrix;
}
protected function getMatrixValue(Matrix $matrix, $rowIndex, $columnIndex)
{
return $matrix->getValue($rowIndex, $matrix->getWidth() - $columnIndex - 1);
}
