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;
+    }
+}