unity_Vector3.up 和 transform.up 的区别-Toy模板网

这篇具有很好参考价值的文章主要介绍了unity_Vector3.up 和 transform.up 的区别。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

Vector3

Vector3.up：即 Vector3(0, 1, 0)
Vector3.down：即 Vector3(0, -1, 0)
Vector3.forward：即 Vector3(0, 0, 1)
Vector3.back：即 Vector3(0, 0, -1)
Vector3.right：即 Vector3(1,0, 0)
Vector3.left：即 Vector3(-1, 0, 0)

在 Scene 中画线（脚本挂给Cube）

    void FixedUpdate()
    {
        Debug.DrawRay(transform.position, Vector3.up * 10, Color.black);//黑色

        Debug.DrawRay(transform.position, Vector3.down * 10, Color.blue);//蓝色

        Debug.DrawRay(transform.position, Vector3.forward * 10, Color.cyan);//青色

        Debug.DrawRay(transform.position, Vector3.back * 10, Color.yellow);//黄色

        Debug.DrawRay(transform.position, Vector3.left * 10, Color.magenta);//洋红

        Debug.DrawRay(transform.position, Vector3.right * 10, Color.green);//绿色
    }

结果

unity_Vector3.up 和 transform.up 的区别

Transform

transform.up：即 Vector3.up
transform.forward：即 Vector3.forward
transform.right：即 Vector3.right

tranform 是基于自身坐标系，而 Vector3 是基于世界坐标系。

    void FixedUpdate()
    {
        Debug.DrawRay(transform.position, transform.up * 10, Color.yellow); //黄色
        Debug.DrawRay(transform.position, transform.forward * 10, Color.cyan); //青色
        Debug.DrawRay(transform.position, transform.right * 10, Color.green); //绿色
        
        Debug.DrawRay(transform.position, Vector3.up * 10, Color.magenta); 
        Debug.DrawRay(transform.position, Vector3.down * 10, Color.magenta); 
        Debug.DrawRay(transform.position, Vector3.forward * 10, Color.magenta); 
        Debug.DrawRay(transform.position, Vector3.back * 10, Color.magenta); 
        Debug.DrawRay(transform.position, Vector3.left * 10, Color.magenta); 
        Debug.DrawRay(transform.position, Vector3.right * 10, Color.magenta); 
    }

效果

unity_Vector3.up 和 transform.up 的区别