copy from github

Runtime/ShapeFactory.cs

@@ -0,0 +1,49 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Jovian.ZoneSystem {
+    public static class ShapeFactory {
+        public const int CircleSegments = 24;
+        public const float DefaultRadius = 2f;
+        public const float DefaultSquareHalf = 2f;
+        public const float DefaultPolygonRadius = 3f;
+        public const int DefaultPolygonVertices = 12;
+
+        public static List<Vector2> CreateSquare(float halfSize = DefaultSquareHalf) {
+            return new List<Vector2> {
+                new(-halfSize, -halfSize),
+                new(-halfSize, halfSize),
+                new(halfSize, halfSize),
+                new(halfSize, -halfSize)
+            };
+        }
+
+        public static List<Vector2> CreateCircle(float radius = DefaultRadius, int segments = CircleSegments) {
+            List<Vector2> points = new List<Vector2>(segments);
+            float step = 2f * Mathf.PI / segments;
+            for(int i = 0; i < segments; i++) {
+                float angle = i * step;
+                points.Add(new Vector2(Mathf.Cos(angle) * radius, Mathf.Sin(angle) * radius));
+            }
+            return points;
+        }
+
+        public static List<Vector2> CreatePolygon(float radius = DefaultPolygonRadius, int vertices = DefaultPolygonVertices) {
+            return CreateCircle(radius, vertices);
+        }
+
+        public static List<Vector2> CreateDefault(ZoneShape shape) {
+            switch(shape) {
+                case ZoneShape.Square: return CreateSquare();
+                case ZoneShape.Circle: return CreateCircle();
+                case ZoneShape.Polygon: return CreatePolygon();
+                default: return CreateSquare();
+            }
+        }
+
+        public static void RegenerateCircle(ZoneData data) {
+            data.polygon.Clear();
+            data.polygon.AddRange(CreateCircle(data.circleRadius));
+        }
+    }
+}