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author | Anton Luka Šijanec <anton@sijanec.eu> | 2024-05-27 13:08:29 +0200 |
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committer | Anton Luka Šijanec <anton@sijanec.eu> | 2024-05-27 13:08:29 +0200 |
commit | 75160b12821f7f4299cce7f0b69c83c1502ae071 (patch) | |
tree | 27e25e4ccaef45f0c58b22831164050d1af1d4db /vendor/markbaker/matrix/classes/src/Builder.php | |
parent | prvi-commit (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | vendor/markbaker/matrix/classes/src/Builder.php | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/vendor/markbaker/matrix/classes/src/Builder.php b/vendor/markbaker/matrix/classes/src/Builder.php new file mode 100644 index 0000000..d075479 --- /dev/null +++ b/vendor/markbaker/matrix/classes/src/Builder.php @@ -0,0 +1,70 @@ +<?php
+
+/**
+ *
+ * Class for the creating "special" Matrices
+ *
+ * @copyright Copyright (c) 2018 Mark Baker (https://github.com/MarkBaker/PHPMatrix)
+ * @license https://opensource.org/licenses/MIT MIT
+ */
+
+namespace Matrix;
+
+/**
+ * Matrix Builder class.
+ *
+ * @package Matrix
+ */
+class Builder
+{
+ /**
+ * Create a new matrix of specified dimensions, and filled with a specified value
+ * If the column argument isn't provided, then a square matrix will be created
+ *
+ * @param mixed $fillValue
+ * @param int $rows
+ * @param int|null $columns
+ * @return Matrix
+ * @throws Exception
+ */
+ public static function createFilledMatrix($fillValue, $rows, $columns = null)
+ {
+ if ($columns === null) {
+ $columns = $rows;
+ }
+
+ $rows = Matrix::validateRow($rows);
+ $columns = Matrix::validateColumn($columns);
+
+ return new Matrix(
+ array_fill(
+ 0,
+ $rows,
+ array_fill(
+ 0,
+ $columns,
+ $fillValue
+ )
+ )
+ );
+ }
+
+ /**
+ * Create a new identity matrix of specified dimensions
+ * This will always be a square matrix, with the number of rows and columns matching the provided dimension
+ *
+ * @param int $dimensions
+ * @return Matrix
+ * @throws Exception
+ */
+ public static function createIdentityMatrix($dimensions, $fillValue = null)
+ {
+ $grid = static::createFilledMatrix($fillValue, $dimensions)->toArray();
+
+ for ($x = 0; $x < $dimensions; ++$x) {
+ $grid[$x][$x] = 1;
+ }
+
+ return new Matrix($grid);
+ }
+}
|