重要類(ButtonMask、Device躺坟、Input、Update、DeviceRelation與GetDeviceIndex)

SteamVR_Controller是非Monobehavior的腳本拯坟，并沒有掛在場景下，其運行是通過SteamVR_Render腳本對于其中Update（）函數(shù)的調(diào)用從而一直循環(huán)獲取手柄相關(guān)信息韭山。而SteamVR_Render腳本是在程序運行時自動加載至場景的郁季。先來看看腳本的全貌吧。
先來看看這幾個重要類

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ButtonMask

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1 - 菜單鍵
6 - 系統(tǒng)鍵（按下后手柄斷開連接钱磅，再次按下手柄再次連接上）
7 - 扳機鍵
8 - 握持鍵
9 - 觸摸板鍵

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Device

首先先看這前面這幾個簡單函數(shù)的解釋把

public class Device//最重要的類梦裂，封裝了跟蹤設(shè)備的全部名稱
    {
        public Device(uint i) { index = i; }
        public uint index { get; private set; }

        public bool valid { get; private set; }//GetControllerStateWithPose（）函數(shù)調(diào)用是否成功；
        public bool connected { get { Update(); return pose.bDeviceIsConnected; } }//判斷設(shè)備是否連接
        public bool hasTracking { get { Update(); return pose.bPoseIsValid; } }//判斷設(shè)備是否跟蹤正常 

        //判斷設(shè)備是否超出范圍 
        public bool outOfRange { get { Update(); return pose.eTrackingResult == ETrackingResult.Running_OutOfRange || pose.eTrackingResult == ETrackingResult.Calibrating_OutOfRange; } }
        //判斷設(shè)備是否正在校正 
        public bool calibrating { get { Update(); return pose.eTrackingResult == ETrackingResult.Calibrating_InProgress || pose.eTrackingResult == ETrackingResult.Calibrating_OutOfRange; } }
        //判斷設(shè)備是否未初始化
        public bool uninitialized { get { Update(); return pose.eTrackingResult == ETrackingResult.Uninitialized; } }

        // These values are only accurate for the last controller state change (e.g. trigger release), and by definition, will always lag behind
        // the predicted visual poses that drive SteamVR_TrackedObjects since they are sync'd to the input timestamp that caused them to update.
        //獲取的結(jié)果是包含12個元素的一維數(shù)組盖淡，通過SteamVR_Utils.RigidTransform函數(shù)
        //將12個元素重組為3X4矩陣并針對Unity的坐標系進行修正年柠，同時添加了對position和rotation方便的引用
        public SteamVR_Utils.RigidTransform transform { get { Update(); return new SteamVR_Utils.RigidTransform(pose.mDeviceToAbsoluteTracking); } }
        //velocity和angularVelocity :這兩個速度也針對Unity的坐標系進行修正，lighthouse跟蹤的空間軸方向與Unity存在偏差褪迟。
        public Vector3 velocity { get { Update(); return new Vector3(pose.vVelocity.v0, pose.vVelocity.v1, -pose.vVelocity.v2); } }
        public Vector3 angularVelocity { get { Update(); return new Vector3(-pose.vAngularVelocity.v0, -pose.vAngularVelocity.v1, pose.vAngularVelocity.v2); } }

下面我們再來看看下面這幾個按鍵函數(shù)的應(yīng)用

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針對按鍵的三個函數(shù)冗恨，每種函數(shù)有兩個重載，參數(shù)為ButtonMask或EVRButtonId類牵咙，第二種形式會將EVRButtonId轉(zhuǎn)換為ButtonMask后調(diào)用第一種得到結(jié)果派近。

針對Touchpad的三個函數(shù)，一樣的兩種形式洁桌，同上不解釋渴丸。

       // 按下了扳機按鈕調(diào)用
        if (device.GetTouch(SteamVR_Controller.ButtonMask.Trigger))
        {
            Debug.Log("GetTouch");
        }
//第二種方法
if (device.GetPressDown(Valve.VR.EVRButtonId.k_EButton_SteamVR_Trigger))
        {
            print("GetPressDown");
        }

關(guān)于GetAxis

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關(guān)于TriggerHapticPulse

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關(guān)于這GetHairTrigger/GetHairTriggerDown/GetHairTriggerUp

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Input:初始化16個設(shè)備的信息存儲空間捆愁，并返回某個設(shè)備；