Question

我正在尝试开发一款可以检测汽车加速，制动和转弯速度的应用。我需要检测设备加速。加速度是高还是低？喜欢Google Play上的flo app。

我使用陀螺仪，我需要从陀螺仪中获得用户加速度（x，y，z轴）的最高值。 x，y和z的值每帧都在变化。我需要达到这个3轴的最高值以供以后使用。

现在我的当前代码看起来像这样

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class NewBehaviourScript : MonoBehaviour
{
 public Text x, y, z;

 void Start()
 {
     Input.gyro.enabled = true;
 }

 void Update()
 {
     x.text = Mathf.Abs(Input.gyro.userAcceleration.x).ToString();
     y.text = Mathf.Abs(Input.gyro.userAcceleration.y).ToString();
     z.text = Mathf.Abs(Input.gyro.userAcceleration.z).ToString();
 }
}

感谢您的帮助

Answer 1

使用Time.deltaTime;执行计时器，然后将Input.gyro.userAcceleration存储到临时Vector3变量中，然后比较以及来自Gyro的新值下一帧。如果新值为>旧的vector3值，则覆盖旧值。当计时器启动时，您可以使用旧值作为最高值。

 void Start()
 {
     Input.gyro.enabled = true;
 }

bool firstRun = true;
float counter = 0;
float calcTime = 1; //Find highest gyro value  every 1 seconds
Vector3 oldGyroValue = Vector3.zero;
Vector3 highestGyroValue = Vector3.zero;

    void Update()
    {
        gyroFrame();
    }

    void gyroFrame()
    {

        if (firstRun)
        {
            firstRun = false; //Set to false so that this if statement wont run again
            oldGyroValue = Input.gyro.userAcceleration;
            counter += Time.deltaTime; //Increment the timer to reach calcTime
            return; //Exit if first run because there is no old value to compare with the new gyro value 
        }

        //Check if we have not reached the calcTime seconds 
        if (counter <= calcTime)
        {
            Vector3 tempVector = Input.gyro.userAcceleration;
            //Check if we have to Update X, Y, Z
            if (tempVector.x > oldGyroValue.x)
            {
                oldGyroValue.x = tempVector.x;
            }

            if (tempVector.y > oldGyroValue.y)
            {
                oldGyroValue.y = tempVector.y;
            }

            if (tempVector.z > oldGyroValue.z)
            {
                oldGyroValue.z = tempVector.z;
            }
            counter += Time.deltaTime;
        }

        //We have reached the end of timer. Reset counter then get the highest value
        else
        {
            counter = 0;
            highestGyroValue = oldGyroValue;
            Debug.Log("The Highest Values for X: " + highestGyroValue.x + "  Y: " + highestGyroValue.y +
                "  Z: " + highestGyroValue.z);
        }
    }

Unity3D - 如何从Input.gyro获得最高加速值

1 个答案: