Unity 將UI放置在鼠標點擊位置的位置

• 1、當渲染模式爲：Screen Space-Overlay

Vector2 localPoint = Input.mousePosition - new Vector3(Screen.width*0.5f,Screen.height*0.5f);
target.transform.localPosition = localPoint/canvans.transform.localScale.x;

• 2、當渲染模式爲：Screen Space-Camera

Vector2 localPoint;
RectTransformUtility.ScreenPointToLocalPointInRectangle(p,Input.mousePosition,cam,out localPoint);
target.transform.localPosition = localPoint;

其中p爲目標父節點

• 3、當渲染模式爲：World Space 代碼同2