From dc4069b82d4fbab5135103434d673fc6d805e742 Mon Sep 17 00:00:00 2001
From: Arthur Moore <Arthur.Moore.git@cd-net.net>
Date: Mon, 29 Apr 2024 20:56:56 -0400
Subject: [PATCH] Add an affine_scale command

---
 generic-helpers.scad | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/generic-helpers.scad b/generic-helpers.scad
index fbab526..d8e3a25 100644
--- a/generic-helpers.scad
+++ b/generic-helpers.scad
@@ -161,6 +161,18 @@ function affine_translate(vector) = [
     [0, 0, 0, 1]
 ];
 
+/**
+ * @brief Affine transformation matrix equivalent of `scale`
+ * @param vector @see `scale`
+ * @returns An affine transformation matrix for use with `multmatrix()`
+ */
+function affine_scale(vector) = [
+    [vector.x, 0, 0, 0],
+    [0, vector.y, 0, 0],
+    [0, 0, vector.z, 0],
+    [0, 0, 0, 1]
+];
+
 /**
  * @brief Create a rectangle with rounded corners by sweeping a 2d object along a path.
  *        Centered on origin.