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<?php
namespace Matrix\Operators;
use Matrix\Matrix;
use Matrix\Exception;
abstract class Operator
{
/**
* Stored internally as a 2-dimension array of values
*
* @property mixed[][] $matrix
**/
protected $matrix;
/**
* Number of rows in the matrix
*
* @property integer $rows
**/
protected $rows;
/**
* Number of columns in the matrix
*
* @property integer $columns
**/
protected $columns;
/**
* Create an new handler object for the operation
*
* @param Matrix $matrix The base Matrix object on which the operation will be performed
*/
public function __construct(Matrix $matrix)
{
$this->rows = $matrix->rows;
$this->columns = $matrix->columns;
$this->matrix = $matrix->toArray();
}
/**
* Compare the dimensions of the matrices being operated on to see if they are valid for addition/subtraction
*
* @param Matrix $matrix The second Matrix object on which the operation will be performed
* @throws Exception
*/
protected function validateMatchingDimensions(Matrix $matrix): void
{
if (($this->rows != $matrix->rows) || ($this->columns != $matrix->columns)) {
throw new Exception('Matrices have mismatched dimensions');
}
}
/**
* Compare the dimensions of the matrices being operated on to see if they are valid for multiplication/division
*
* @param Matrix $matrix The second Matrix object on which the operation will be performed
* @throws Exception
*/
protected function validateReflectingDimensions(Matrix $matrix): void
{
if ($this->columns != $matrix->rows) {
throw new Exception('Matrices have mismatched dimensions');
}
}
/**
* Return the result of the operation
*
* @return Matrix
*/
public function result(): Matrix
{
return new Matrix($this->matrix);
}
}