带有 Unity 5 的 Google Cardboard 单对象 3D 查看器

Question

我正在尝试重新创建 Google Cardboard 应用的“展览”演示的功能。即从各个方面查看单个对象 - 向上看，您可以看到对象下方，向下看，您可以从上方查看，向左或向右，您可以从侧面看到它，然后再向后看。

我尝试了很多方法，例如将对象设为相机的子对象，并使用 transform.LookAt(target); 将相机保持在对象上，但它不起作用。

Unity5 新手，非常感谢任何帮助。

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更新

使用来自 SmoothMouseLook 脚本 (http://pastebin.com/vMFkZJAm) 的代码，这是迄今为止我得到的最接近的，但它并没有真正起作用并且感觉太“失控”（对象一直在旋转而不是平滑地转动检查）并且比“展览”演示的可预测性要低得多。我的猜测是我把事情复杂化了。有人有什么想法吗？...

在相机（“主相机”）上附加它以保持对对象的关注：

 using UnityEngine;
 using System.Collections;

 public class LookAt : MonoBehaviour {
     public Transform target;

     void Update () {
         transform.LookAt(target);
     }
 }

在对象上，附加此脚本：

using UnityEngine;
using System.Collections;
using System.Collections.Generic;


public class SmoothMouseLook : MonoBehaviour
{   
    /*
     This script is used to average the mouse input over x 
     amount of frames in order to create a smooth mouselook.
     */

    //Mouse look sensitivity    
    public float sensitivityX = 1f;
    public float sensitivityY = 1f;


    //Default mouse sensitivity
    public float defaultSensX = 1f;
    public float defaultSensY = 1f;


    //Minimum angle you can look up
    public float minimumY = -60f;
    public float maximumY = 60f;

    //Minimum angle you can look up
    public float minimumX = -60f;
    public float maximumX = 60f;


    //Number of frames to be averaged, used for smoothing mouselook
    public int frameCounterX = 35;
    public int frameCounterY = 35;


    //Mouse rotation input
    private float rotationX = 0f;
    private float rotationY = 0f;


    //Used to calculate the rotation of this object
    private Quaternion xQuaternion;
    private Quaternion yQuaternion;
    private Quaternion originalRotation;


    //Array of rotations to be averaged
    private List<float> rotArrayX = new List<float> ();
    private List<float> rotArrayY = new List<float> ();


    void Start ()
    {
        //Lock/Hide cursor

        if (GetComponent<Rigidbody>())      
            GetComponent<Rigidbody>().freezeRotation = true;


        originalRotation = transform.localRotation;

    }


    void FixedUpdate () 
    {

        //Mouse/Camera Movement Smoothing:    
        //Average rotationX for smooth mouselook

        float rotAverageX = 0f;
        //rotationX += Camera.main.transform.eulerAngles.x * sensitivityX;
        //rotationX += Cardboard.SDK.HeadRotation.eulerAngles.x * sensitivityX;
        rotationX += Cardboard.SDK.HeadPose.Orientation.x * sensitivityX;

        rotationX = ClampAngle (rotationX, minimumX, maximumX);

        //Add the current rotation to the array, at the last position
        rotArrayX.Add (rotationX);

        //Reached max number of steps?  Remove the oldest rotation from the array
        if (rotArrayX.Count >= frameCounterX) {

            rotArrayX.RemoveAt (0);

        }

        //Add all of these rotations together
        for (int i_counterX = 0; i_counterX < rotArrayX.Count; i_counterX++) {
            //Loop through the array
            rotAverageX += rotArrayX[i_counterX];
        }


        //Now divide by the number of rotations by the number of elements to get the average
        rotAverageX /= rotArrayX.Count;


        //Average rotationY, same process as above
        float rotAverageY = 0;
        //rotationY += Camera.main.transform.eulerAngles.y * sensitivityY;
        //rotationY += Cardboard.SDK.HeadRotation.eulerAngles.y * sensitivityY;
        rotationY += Cardboard.SDK.HeadPose.Orientation.y * sensitivityY;

        rotationY = ClampAngle (rotationY, minimumY, maximumY);
        rotArrayY.Add (rotationY);


        if (rotArrayY.Count >= frameCounterY) {
            rotArrayY.RemoveAt (0);
        }


        for (int i_counterY = 0; i_counterY < rotArrayY.Count; i_counterY++) {  
            rotAverageY += rotArrayY[i_counterY];
        }


        rotAverageY /= rotArrayY.Count;


        //Apply and rotate this object
        xQuaternion = Quaternion.AngleAxis (rotAverageX, Vector3.up);
        yQuaternion = Quaternion.AngleAxis (rotAverageY, Vector3.left);

        transform.localRotation = originalRotation * xQuaternion * yQuaternion;

    }



    private float ClampAngle (float angle, float min, float max)
    {
        if (angle < -360f)  
            angle += 360f;
        if (angle > 360f)
            angle -= 360f;

        return Mathf.Clamp (angle, min, max);

    }
}

Answer 1

对于该特定用例，您不需要脚本。假设您使用的是 CardboardMain 预制件，请执行以下操作：

• 将对象放在原点，CardboardMain 也放在原点。
• 在 Cardboard 设置中，将 Neck Model Scale 设置为 0。
• 打开 CardboardMain 并选择 Head 对象下的 Main Camera。
• 将其变换位置 Z 值设置为负值（远到可以看到对象）。

（您可以将其视为“自拍杆”相机模型。）