unity UGUI画线（Image方式）

		/// <summary>/// 画线/// 注意：startPoint和endPoint，须和lineTransform在同一路径层级下的位置关系！！！/// </summary>/// <param name="self"></param>/// <param name="lineTransform">LineImg RectTransform <param>/// <param name="startPoint"></param>/// <param name="endPoint"></param>/// <param name="lineColor"></param>/// <param name="lineWidth"></param>private void DrawLine(RectTransform lineTransform, Vector2 startPoint, Vector2 endPoint, Color lineColor, float lineWidth = 5f){Log.Debug($"startPoint.x:{startPoint.x}; startPoint.y:{startPoint.y}; endPoint.x:{endPoint.x}; endPoint.y:{endPoint.y}");// 计算线条的方向和长度Vector2 direction = endPoint - startPoint;float length = direction.magnitude;// 如果长度为0，则不绘制线条if (length == 0) return;// 标准化方向向量Vector2 normalizedDirection = direction.normalized;// 设置线条的RectTransform属性float angle = Mathf.Atan2(normalizedDirection.y, normalizedDirection.x) * Mathf.Rad2Deg;lineTransform.localRotation = Quaternion.AngleAxis(angle, Vector3.forward);lineTransform.sizeDelta = new Vector2(length, lineWidth);lineTransform.anchoredPosition = startPoint + normalizedDirection * length * 0.5f; // 将线条中心放在起始点// 设置线条颜色lineTransform.gameObject.GetComponent<Image>().color = lineColor;}