From cfd970e21663c3278f6e01d356690789225b6b56 Mon Sep 17 00:00:00 2001
From: Elizabeth Hunt <elizabeth.hunt@simponic.xyz>
Date: Sat, 2 Dec 2023 14:16:56 -0700
Subject: 2022 day 9 and add utils

---
 utils/point2d.ts | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 utils/point2d.ts

(limited to 'utils/point2d.ts')

diff --git a/utils/point2d.ts b/utils/point2d.ts
new file mode 100644
index 0000000..3d07569
--- /dev/null
+++ b/utils/point2d.ts
@@ -0,0 +1,9 @@
+export type Vec2 = {
+  x: number;
+  y: number;
+};
+
+export const l2Norm = (p1: Vec2, p2: Vec2) =>
+  Math.sqrt(Math.pow(p2.x - p1.x, 2) + Math.pow(p2.y - p1.y, 2));
+
+export const isDiagAdj = (p1: Vec2, p2: Vec2) => l2Norm(p1, p2) <= Math.sqrt(2);
-- 
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