From a86471b5ae145b2f6eecfc60839c8d2919ac8f7e Mon Sep 17 00:00:00 2001
From: merowin <martin.unger@planet-earth.at>
Date: Thu, 2 Jan 2025 23:46:00 +0100
Subject: [PATCH 1/2] fix distances of sierpinsky board

---
 .../shared/src/lib/abstractBoard/helper/SierpinskyBoard.ts    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/shared/src/lib/abstractBoard/helper/SierpinskyBoard.ts b/packages/shared/src/lib/abstractBoard/helper/SierpinskyBoard.ts
index 6f8e16c0..fe5217f6 100644
--- a/packages/shared/src/lib/abstractBoard/helper/SierpinskyBoard.ts
+++ b/packages/shared/src/lib/abstractBoard/helper/SierpinskyBoard.ts
@@ -2,7 +2,7 @@ import { Vector2D } from "./types/Vector2D";
 import { Intersection } from "./types/intersection";
 
 export function createSierpinskyBoard(depth: number): Intersection[] {
-  const sideLength = Math.pow(2, depth + 1);
+  const radius = Math.pow(2, depth + 1) / Math.sqrt(3);
 
   const middleIntersections = [0, 1, 2].map(
     (number) =>
@@ -10,7 +10,7 @@ export function createSierpinskyBoard(depth: number): Intersection[] {
         new Vector2D(
           Math.cos((Math.PI * (0.5 + 2 * number)) / 3),
           Math.sin((Math.PI * (0.5 + 2 * number)) / 3),
-        ).Multiply(sideLength / 2),
+        ).Multiply(radius),
       ),
   ) as [Intersection, Intersection, Intersection];
 

From 13130260170782c5796d1dd7a11c1c6c70c9377f Mon Sep 17 00:00:00 2001
From: merowin <martin.unger@planet-earth.at>
Date: Fri, 3 Jan 2025 04:50:47 +0100
Subject: [PATCH 2/2] remove commented code

---
 .../abstractBoard/helper/SierpinskyBoard.ts   | 56 -------------------
 1 file changed, 56 deletions(-)

diff --git a/packages/shared/src/lib/abstractBoard/helper/SierpinskyBoard.ts b/packages/shared/src/lib/abstractBoard/helper/SierpinskyBoard.ts
index fe5217f6..1781c2c4 100644
--- a/packages/shared/src/lib/abstractBoard/helper/SierpinskyBoard.ts
+++ b/packages/shared/src/lib/abstractBoard/helper/SierpinskyBoard.ts
@@ -19,62 +19,6 @@ export function createSierpinskyBoard(depth: number): Intersection[] {
   return [...middleIntersections, ...sierpinskyTriangle.flatten()];
 }
 
-// Not sure if this is usable, I'd like to leave it here as comment for the time being.
-// creates a board for 4 Sierpinsky Triangles connected in 3D, projected onto the plane
-/*
-export function create3DSierpinskyBoard(depth: number): Intersection[] {
-  const sideLength = Math.pow(2, depth + 1);
-
-  var middleIntersections = [0, 1, 2].map(
-    (number) =>
-      new Intersection(
-        new Vector2D(
-          Math.cos((Math.PI * (0.5 + 2 * number)) / 3),
-          Math.sin((Math.PI * (0.5 + 2 * number)) / 3),
-        ).Multiply(sideLength / 2),
-      ),
-  ) as [Intersection, Intersection, Intersection];
-
-  const sierpinskyTriangle = new SierpinskyTriangle(middleIntersections, depth);
-
-  // experimenting
-  const outwardsStretch = 3;
-
-  const outerIntersections = [0, 1, 2].map(
-    (number) =>
-      new Intersection(
-        new Vector2D(
-          Math.cos((Math.PI * (1.5 + 2 * number)) / 3),
-          Math.sin((Math.PI * (1.5 + 2 * number)) / 3),
-        ).Multiply(sideLength * outwardsStretch),
-      ),
-  );
-
-  const outerSierpinskyTriangles = outerIntersections.map(
-    (intersection, index) =>
-      new SierpinskyTriangle(
-        [
-          intersection,
-          outerIntersections[(index + 2) % 3],
-          middleIntersections[index],
-        ],
-        depth,
-      ),
-  );
-
-  return [
-    ...middleIntersections,
-    ...outerIntersections,
-    ...sierpinskyTriangle.flatten(),
-    ...outerSierpinskyTriangles[0].flatten(),
-    ...outerSierpinskyTriangles[1].flatten(),
-    ...outerSierpinskyTriangles[2].flatten(),
-  ].map((intersection, index) => {
-    intersection.Identifier = index;
-    return intersection;
-  });
-}*/
-
 class SierpinskyTriangle {
   private subTriangles: null | SierpinskyTriangle[];