Quaternion.Set

描述

设置现有四元数的 x、y、z 和 w 分量。

//Create three Sliders ( Create>UI>Slider) and three Text GameObjects (Create>UI>Text). These are for manipulating the x, y, and z values of the Quaternion. The text will act as a label for each Slider, so position them appropriately.
//Attach this script to a GameObject.
//Click on the GameObject and attach each of the Sliders and Texts to the fields in the Inspector.

//This script shows how the numbers placed into the x, y, and z components of a Quaternion effect the GameObject when the w component is left at 1.
//Use the Sliders to see the effects.

using UnityEngine;
using UnityEngine.UI;

public class QuaternionSetExample : MonoBehaviour
{
    //These are the floats for the x, y, and z components of the quaternion
    float m_MyX, m_MyY, m_MyZ;
    //These are the Sliders that set the rotation. Remember to assign these in the Inspector
    public Slider m_SliderX, m_SliderY, m_SliderZ;
    //These are the Texts that output the current value of the rotations. Remember to assign these in the Inspector
    public Text m_TextX, m_TextY, m_TextZ;

    // Use this for initialization
    void Start()
    {
        //Initialise the x, y, and z components of the future Quaternion
        m_MyX = 0;
        m_MyY = 0;
        m_MyZ = 0;

        //Set all the sliders max values to 1 so the Quaternion values don't go over 1
        m_SliderX.maxValue = 1;
        m_SliderY.maxValue = 1;
        m_SliderZ.maxValue = 1;

        //Set all the sliders min values to -1 so the Quaternion values don't go under 1
        m_SliderX.minValue = -1;
        m_SliderY.minValue = -1;
        m_SliderZ.minValue = -1;
    }

    //Change the Quaternion values depending on the values of the Sliders
    private static Quaternion Change(float x, float y, float z)
    {
        Quaternion newQuaternion = new Quaternion();
        newQuaternion.Set(x, y, z, 1);
        //Return the new Quaternion
        return newQuaternion;
    }

    void Update()
    {
        //Update the x, y and z values to that of the sliders
        m_MyX = m_SliderX.value;
        m_MyY = m_SliderY.value;
        m_MyZ = m_SliderZ.value;
        //Output the current values of x, y, and z
        m_TextX.text = " X : " + m_MyX;
        m_TextY.text = " Y : " + m_MyY;
        m_TextZ.text = " Z : " + m_MyZ;

        //Rotate the GameObject by the new Quaternion
        transform.rotation = Change(m_MyX, m_MyY, m_MyZ);
    }
}