CamMovementTracker.cs

Go to the documentation of this file.

using Microsoft.MixedReality.Toolkit.Utilities;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class CamMovementTracker : MonoBehaviour
{
    public static CamMovementTracker m_CamTrackerInstance { get; private set; }
 
    [SerializeField]
    private readonly float m_SampleTime = 1.0f;
        
    private Vector3 m_LastSampleLocation;
 
    private Quaternion m_LastSampleRotation;
 
    private float m_LastSampleTime;
 
    public float Speed { get; private set; }
 
    public float RotationDelta { get; private set; }
 
    public float Distance { get; private set; }
 
    public bool IsMoving { get; private set; }
 
    private void Awake()
    {
        if( m_CamTrackerInstance != null && m_CamTrackerInstance != this )
        {
            Destroy( this );
        }
        else
        {
            m_CamTrackerInstance = this;
        }
    }
 
    void Start()
    {
        m_LastSampleTime = Time.time;
        m_LastSampleLocation = CameraCache.Main.transform.position;
        m_LastSampleRotation = CameraCache.Main.transform.rotation;
    }
 
    void Update()
    {
        if( Time.time - m_LastSampleTime > m_SampleTime)
        {
            Speed = CalculateSpeed();
            RotationDelta = CalculateRotation();
            Distance = CalculateDistanceCovered();
            IsMoving = IsCameraMoving( Speed );
 
            m_LastSampleTime = Time.time;
            m_LastSampleLocation = CameraCache.Main.transform.position;
            m_LastSampleRotation = CameraCache.Main.transform.rotation;
        }
    }
 
    private float CalculateDistanceCovered()
    {
        return Vector3.Distance( m_LastSampleLocation, CameraCache.Main.transform.position );
    }
 
    private float CalculateSpeed()
    {
        return Mathf.Abs( CalculateDistanceCovered() / ( Time.time - m_LastSampleTime ) * 3.6f );
    }
 
    private float CalculateRotation()
    {
        return Mathf.Abs( Quaternion.Angle( m_LastSampleRotation, CameraCache.Main.transform.rotation ) );
    }
 
    private bool IsCameraMoving( float speed )
    {
        if( speed > 0.6f )
        {
            return true;
        }
 
        return false;
    }
}