diff options
Diffstat (limited to '')
-rw-r--r-- | vendor/markbaker/matrix/classes/src/Operators/Multiplication.php | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/vendor/markbaker/matrix/classes/src/Operators/Multiplication.php b/vendor/markbaker/matrix/classes/src/Operators/Multiplication.php new file mode 100644 index 0000000..13d14f0 --- /dev/null +++ b/vendor/markbaker/matrix/classes/src/Operators/Multiplication.php @@ -0,0 +1,86 @@ +<?php
+
+namespace Matrix\Operators;
+
+use Matrix\Matrix;
+use \Matrix\Builder;
+use Matrix\Exception;
+use Throwable;
+
+class Multiplication extends Operator
+{
+ /**
+ * Execute the multiplication
+ *
+ * @param mixed $value The matrix or numeric value to multiply the current base value by
+ * @throws Exception If the provided argument is not appropriate for the operation
+ * @return $this The operation object, allowing multiple multiplications to be chained
+ **/
+ public function execute($value, string $type = 'multiplication'): Operator
+ {
+ if (is_array($value)) {
+ $value = new Matrix($value);
+ }
+
+ if (is_object($value) && ($value instanceof Matrix)) {
+ return $this->multiplyMatrix($value, $type);
+ } elseif (is_numeric($value)) {
+ return $this->multiplyScalar($value, $type);
+ }
+
+ throw new Exception("Invalid argument for $type");
+ }
+
+ /**
+ * Execute the multiplication for a scalar
+ *
+ * @param mixed $value The numeric value to multiply with the current base value
+ * @return $this The operation object, allowing multiple mutiplications to be chained
+ **/
+ protected function multiplyScalar($value, string $type = 'multiplication'): Operator
+ {
+ try {
+ for ($row = 0; $row < $this->rows; ++$row) {
+ for ($column = 0; $column < $this->columns; ++$column) {
+ $this->matrix[$row][$column] *= $value;
+ }
+ }
+ } catch (Throwable $e) {
+ throw new Exception("Invalid argument for $type");
+ }
+
+ return $this;
+ }
+
+ /**
+ * Execute the multiplication for a matrix
+ *
+ * @param Matrix $value The numeric value to multiply with the current base value
+ * @return $this The operation object, allowing multiple mutiplications to be chained
+ * @throws Exception If the provided argument is not appropriate for the operation
+ **/
+ protected function multiplyMatrix(Matrix $value, string $type = 'multiplication'): Operator
+ {
+ $this->validateReflectingDimensions($value);
+
+ $newRows = $this->rows;
+ $newColumns = $value->columns;
+ $matrix = Builder::createFilledMatrix(0, $newRows, $newColumns)
+ ->toArray();
+ try {
+ for ($row = 0; $row < $newRows; ++$row) {
+ for ($column = 0; $column < $newColumns; ++$column) {
+ $columnData = $value->getColumns($column + 1)->toArray();
+ foreach ($this->matrix[$row] as $key => $valueData) {
+ $matrix[$row][$column] += $valueData * $columnData[$key][0];
+ }
+ }
+ }
+ } catch (Throwable $e) {
+ throw new Exception("Invalid argument for $type");
+ }
+ $this->matrix = $matrix;
+
+ return $this;
+ }
+}
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