From e9a68408fc63dfd3a7f279a36a8db477ac928d09 Mon Sep 17 00:00:00 2001
From: Gabriel Csollei <gcsollei@hotmail.com>
Date: Tue, 7 Jan 2025 19:32:10 +0000
Subject: [PATCH] add path-2d

---
 workspaces/tools/deno.json      |  2 +-
 workspaces/tools/src/index.ts   |  1 +
 workspaces/tools/src/path-2d.ts | 33 +++++++++++++++++++++++++++++++++
 3 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 workspaces/tools/src/path-2d.ts

diff --git a/workspaces/tools/deno.json b/workspaces/tools/deno.json
index d618d45d..da4c63c7 100644
--- a/workspaces/tools/deno.json
+++ b/workspaces/tools/deno.json
@@ -1,5 +1,5 @@
 {
     "name": "@g43/tools",
-    "version": "0.0.1",
+    "version": "0.0.2",
     "exports": "./src/index.ts"
 }
diff --git a/workspaces/tools/src/index.ts b/workspaces/tools/src/index.ts
index 4eff2e90..ec713ebe 100644
--- a/workspaces/tools/src/index.ts
+++ b/workspaces/tools/src/index.ts
@@ -1 +1,2 @@
 export * from "./g-map.ts";
+export * from "./path-2d.ts";
diff --git a/workspaces/tools/src/path-2d.ts b/workspaces/tools/src/path-2d.ts
new file mode 100644
index 00000000..39ec845a
--- /dev/null
+++ b/workspaces/tools/src/path-2d.ts
@@ -0,0 +1,33 @@
+import type { ReadonlySimpleVector2 } from "@g43/types";
+
+export class Path2D<T extends ReadonlySimpleVector2> {
+    public constructor(protected readonly points: readonly T[]) {
+        if (points.length < 2) {
+            throw new Error("Cannot create path with less than 2 points");
+        }
+    }
+
+    public getFirstN(count: number): readonly ReadonlySimpleVector2[] {
+        return this.points.slice(0, count);
+    }
+
+    public getLastN(count: number): readonly ReadonlySimpleVector2[] {
+        return this.points.slice(this.points.length - count, this.points.length);
+    }
+
+    public get length(): number {
+        return this.points.length;
+    }
+
+    public get first(): T {
+        return this.points[0];
+    }
+
+    public get last(): T {
+        return this.points[this.points.length - 1];
+    }
+
+    public getPoint(index: number): T {
+        return this.points[index];
+    }
+}