Googleのボール紙の磁気ボタンを検出するをクリックします。

Question

私はボール紙でVRアプリケーションを開発しています。磁気ボタンを2回クリックすると、メニューが表示されます。

どのようにC＃でこの条件を記述しますか？

Answer 1

簡単に言えば、携帯電話のコンパスが傾きなく変更されたことを検出する必要があります（磁石が電話に近づき、物理的な向きを変えずにコンパスを壊した）。

両方のベクターを見て、それらが変化したかどうかを確認したいと思うでしょう。

1. http://www.andrewnoske.com/wiki/Unity_-_Detecting_Google_Cardboard_Click
2. https://github.com/CaseyB/UnityCardboardTrigger/blob/develop/MagnetSensor.cs

/*  -- MIT/X11 like license -- 
Copyright (c) 2014 Paramita ltd, (Secret Ingredient Games) 
*/ 

// 
// Google Cardboard click code in C# for Unity. 
// Author: Andrew Whyte 
// 
using UnityEngine; 
using System.Collections; 
using System; 
using System.Runtime.Serialization.Formatters.Binary; 
using System.IO; 

//public static XmlDocument XmlDoc; 
//public static XmlNodeList xnl; 
//public TextAsset TA; 

public class magneticClick { 
    // Concept: two FIR filters, running on Magnetics and tilt. 
    // If the tilt hasn't changed, but the compass has, then the magnetic field moved 
    // without device this is the essence of a cardboard magnet click. 
    private Vector3 lastTiltVector; 
    public float tiltedBaseLine = 0f; 
    public float magnetBaseLine = 0f; 

    public float tiltedMagn = 0f; 
    public float magnetMagn = 0f; 

    private int N_SlowFIR = 25; 
    private int N_FastFIR_magnet = 3; 
    private int N_FastFIR_tilted = 5; // Clicking the magnet tends to tilt the device slightly. 


    public float threshold = 1.0f; 

    bool click = false; 
    bool clickReported = false; 

    public void init() { 
    Input.compass.enabled = true; 

    // Note that init is platform specific to unity. 
    magnetMagn = Input.compass.rawVector.magnitude; 
    magnetBaseLine = Input.compass.rawVector.magnitude; 
    tiltedBaseLine = Input.acceleration.magnitude; 
    tiltedMagn = Input.acceleration.magnitude; 
    } 

    public void magUpdate(Vector3 acc, Vector3 compass) { 
    // Call this function in the Update of a monobehaviour as follows: 
    // <magneticClickInstance>.magUpdate(Input.acceleration, Input.compass.rawVector); 

    // we are interested in the change of the tilt not the actual tilt. 
    Vector3 TiltNow = acc; 
    Vector3 motionVec3 = TiltNow - lastTiltVector; 
    lastTiltVector = TiltNow; 

    // update tilt and compass "fast" values 
    tiltedMagn = ((N_FastFIR_tilted-1) * tiltedMagn + motionVec3.magnitude)/N_FastFIR_tilted; 
    magnetMagn = ((N_FastFIR_magnet-1) * magnetMagn + compass.magnitude)/N_FastFIR_magnet; 

    // update the "slow" values 
    tiltedBaseLine = ((N_SlowFIR-1) * tiltedBaseLine + motionVec3.magnitude)/N_SlowFIR; 
    magnetBaseLine = ((N_SlowFIR-1) * magnetBaseLine + compass.magnitude)/N_SlowFIR; 

    if(tiltedMagn < 0.2 && (magnetMagn/magnetBaseLine) > 1.1 ) { 
     if(clickReported == false) { 
     click = true; 
     } 
     clickReported = true; 
    } else { 
     clickReported = false; 
    } 
    } 

    public bool clicked() { 
    // Basic premise is that the magnitude of magnetic field should change while the 
    // device is steady. This seems to be suiltable for menus etc. 

    // Clear the click by reading (so each 'click' returns true only once) 
    if(click == true) { 
     click = false; 
     return true; 
    } else { 
     return false; 
    } 
    } 
} 

：

私は臆面もなく（隠し味ゲームからアンドリュー・ホワイトへのすべてのクレジット）以下が含ま最も単純れる2つのオープンソース実装を、あります