UGUI--------UI以及3D物体显示在鼠标点击位置

1、鼠标的点击的位置—赋值给3D物体

float distance=5;
/// <summary>
/// 赋值鼠标位置给3D物体
/// </summary>
void MouseTo3DPos()
{
Vector2 mousePosition = Input.mousePosition;
Vector3 targetPosition = Camera.main.ScreenToWorldPoint(new Vector3(mousePosition.x, mousePosition.y, distance));
cube.position = targetPosition;
}

2、鼠标的点击位置—赋值给UI物体

2.1、当UI的Canvas的RenderMode为Screen Space–Overlay

public Text m_text;
void MouseToUI()
{
Vector3 mousePosition = Input.mousePosition;
m_text.transform.position = mousePosition;
}

2.2、当UI的Canvas的RenderMode为World Space，其中m_text.transform .parent为该Text所在Canvas.

void MouseToUI()
{
Vector2 localPoint;
RectTransformUtility.ScreenPointToLocalPointInRectangle(m_text.transform .parent .GetComponent <RectTransform >(), Input.mousePosition, Camera.main , out localPoint);
m_text.transform.localPosition = localPoint;

}