Matrix\Operators\DirectSum Class Reference

Inheritance diagram for Matrix\Operators\DirectSum:

Collaboration diagram for Matrix\Operators\DirectSum:

Public Member Functions
	execute ($value)
	Execute the addition. More...
Public Member Functions inherited from Matrix\Operators\Operator
	__construct (Matrix $matrix)
	Create an new handler object for the operation. More...
	result ()
	Return the result of the operation. More...

Private Member Functions
	directSumMatrix ($value)
	Execute the direct sum for a matrix. More...

Additional Inherited Members
Protected Member Functions inherited from Matrix\Operators\Operator
	validateMatchingDimensions (Matrix $matrix)
	Compare the dimensions of the matrices being operated on to see if they are valid for addition/subtraction. More...
	validateReflectingDimensions (Matrix $matrix)
	Compare the dimensions of the matrices being operated on to see if they are valid for multiplication/division. More...
Protected Attributes inherited from Matrix\Operators\Operator
	$matrix
	$rows
	Number of rows in the matrix. More...
	$columns
	Number of columns in the matrix. More...

Detailed Description

Definition at line 8 of file DirectSum.php.

Member Function Documentation

directSumMatrix()

Matrix\Operators\DirectSum::directSumMatrix (   $value )

private

Execute the direct sum for a matrix.

Parameters

Matrix

$value

The numeric value to concatenate/direct sum with the current base value

Returns

$this The operation object, allowing multiple additions to be chained

Definition at line 36 of file DirectSum.php.

                                            : Operator
    {
        $originalColumnCount = count($this->matrix[0]);
        $originalRowCount = count($this->matrix);
        $valColumnCount = $value->columns;
        $valRowCount = $value->rows;
        $value = $value->toArray();
 
        for ($row = 0; $row < $this->rows; ++$row) {
            $this->matrix[$row] = array_merge($this->matrix[$row], array_fill(0, $valColumnCount, 0));
        }
 
        $this->matrix = array_merge(
            $this->matrix,
            array_fill(0, $valRowCount, array_fill(0, $originalColumnCount, 0))
        );
 
        for ($row = $originalRowCount; $row < $originalRowCount + $valRowCount; ++$row) {
            array_splice(
                $this->matrix[$row],
                $originalColumnCount,
                $valColumnCount,
                $value[$row - $originalRowCount]
            );
        }
 
        return $this;
    }

References $row, and Matrix\Operators\Operator\$rows.

Referenced by Matrix\Operators\DirectSum\execute().

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execute()

Matrix\Operators\DirectSum::execute

(

$value

)

Execute the addition.

Parameters

mixed

$value

The matrix or numeric value to add to the current base value

Returns

$this The operation object, allowing multiple additions to be chained

Exceptions

Exception

If the provided argument is not appropriate for the operation

Definition at line 17 of file DirectSum.php.

                                   : Operator
    {
        if (is_array($value)) {
            $value = new Matrix($value);
        }
 
        if ($value instanceof Matrix) {
            return $this->directSumMatrix($value);
        }
 
        throw new Exception('Invalid argument for addition');
    }

References Matrix\Operators\DirectSum\directSumMatrix().

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The documentation for this class was generated from the following file:

• libs/composer/vendor/markbaker/matrix/classes/src/Operators/DirectSum.php