Fix should draw condition

frontend/src/scripts/math/circle.ts

@@ -0,0 +1,15 @@
+import { vec2 } from 'gl-matrix';
+
+export class Circle {
+  public constructor(public center: vec2, public radius: number) {}
+
+  public isInside(position: vec2): boolean {
+    const distance = vec2.distance(this.center, position);
+    return distance < this.radius;
+  }
+
+  public areIntersecting(other: Circle): boolean {
+    const distance = vec2.distance(this.center, other.center);
+    return distance < this.radius + other.radius;
+  }
+}