Unity3D - How to get highest value for acceleration from Input.gyro

Question

I'm trying to develop an app that can detect car acceleration, braking and cornering speed. I need to detect device acceleration. Is that acceleration high or low?. Like flo app on Google Play.

I'm using gyroscope and I need to get highest value for user acceleration (x, y, z axises) from gyroscope. Values of x, y and z are changing every frame. I need to achieve highest value of this 3 axis for later use.

Now my current code looks like this

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();
 }
}

Thanks for any help

your question is confusing.... you want to check which axis is greater than 3 of them? Explain more about what you are trying to do... — Programmer, Apr 05 '16 at 07:22
get the highest value of x,y,z...that doesn't make sense. If you really need help, modify your question and add what you mean by highest value and what you are trying to archive. — Programmer, Apr 05 '16 at 07:30
values of x ,y and z are changing every frame. I need to achieve highest value of this 3 axis for later use — , Apr 05 '16 at 07:36
Ok. To make it clear, you want to get the highest value of each axis every 1 second? — Programmer, Apr 05 '16 at 07:40
Ok. I will be back. Please modify your question to reflect this. — Programmer, Apr 05 '16 at 07:49
Check my answer. I wasn't able to test it because Unity wouldn't detect my phone so let me if it works. — Programmer, Apr 05 '16 at 08:21

Programmer · Answer 1 · 2016-04-05T08:26:59.440

Use Time.deltaTime; to do a timer then store Input.gyro.userAcceleration to a temporary Vector3 variable and compare it later on with a new value from the Gyro in the next frame. If the new value is > the old vector3 value, overwrite the old value. When timer is up, you can use the old values as the highest values.

 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 - How to get highest value for acceleration from Input.gyro

1 Answers1