protected override void OnPopulateMesh(VertexHelper vh) { base.OnPopulateMesh(vh); var center = (BottomLeft + UpRight) * 0.5f; var size = new Vector2(rectTransform.rect.width, rectTransform.rect.height) * 0.5f; vh.DrawArc(center, size, 0, Mathf.PI * 2, Sides, color); }