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该示例代码位置如下：

分析如下：

Hover Enabled：悬停功能，手放在这个模型上，会触发我们手放在这个模型上的悬停功能。此时当手靠近模型的时候，手的模型的颜色会发生改变，反之，则不会改变。
Contact Enabled：触摸功能，与场景物体产生碰撞的功能。
Grasping Enabled：抓取功能，手是否具有抓取功能，是否会抓取起物体。

Hover Activation Radius：触发悬停半径，超过这个范围将不会触发悬停
Touch Activation Radius：抓取半径，超过这个范围将不会触发抓取
Multi Grasp Holding Mode：多个人同时抓取，

• Preserve Pose Per Controller：如果要实现Multi Grasp Holding Mode，我们必须要这个物体允许可以被多个人同时抓取，即被多个手同时抓取，就要求物体开启属性才可以，找到可以交互的物体，挂载组件Interaction Behavior(Script)，在下拉栏中选中Allow Multi Grasp；同时，该手还需要有Interaction Manager 这个组件。此时，物体就可以与手发生Hover、Contact、Grasping 。
  
  
• Reinitialize On Any Release:进行切换，自行体验二者的不同。

Interaction Objects
物体设置：
Ignore Hover Mode：忽略Hover
Ignore Primary Hover：忽略主悬停
Ignore Contact：忽略碰撞
Ignore Grapsing：忽略抓取
Move Objext When Grasp：抓取的物体是否跟着一起动

Use Hover 悬停
Use Primary Hover 主悬停
悬停可以有很多，主悬停只有一个。当手在两个物体上悬停，优先选择主悬停。

挂载在物体上的脚本SimpleInteractionGlow.cs

/******************************************************************************* Copyright (C) Ultraleap, Inc. 2011-2024.                                   **                                                                            ** Use subject to the terms of the Apache License 2.0 available at            ** http://www.apache.org/licenses/LICENSE-2.0, or another agreement           ** between Ultraleap and you, your company or other organization.             *******************************************************************************/using Leap.Unity;
using Leap.Unity.Interaction;
using UnityEngine;namespace Leap.Unity.InteractionEngine.Examples
{/// <summary>/// This simple script changes the color of an InteractionBehaviour as/// a function of its distance to the palm of the closest hand that is/// hovering nearby./// </summary>[AddComponentMenu("")][RequireComponent(typeof(InteractionBehaviour))]public class SimpleInteractionGlow : MonoBehaviour{[Tooltip("If enabled, the object will lerp to its hoverColor when a hand is nearby.")]public bool useHover = true;[Tooltip("If enabled, the object will use its primaryHoverColor when the primary hover of an InteractionHand.")]public bool usePrimaryHover = false;[Header("InteractionBehaviour Colors")]public Color defaultColor = Color.Lerp(Color.black, Color.white, 0.1F);public Color suspendedColor = Color.red;public Color hoverColor = Color.Lerp(Color.black, Color.white, 0.7F);public Color primaryHoverColor = Color.Lerp(Color.black, Color.white, 0.8F);[Header("InteractionButton Colors")][Tooltip("This color only applies if the object is an InteractionButton or InteractionSlider.")]public Color pressedColor = Color.white;private Material[] _materials;private InteractionBehaviour _intObj;[SerializeField]private Rend[] rends;[System.Serializable]public class Rend{public int materialID = 0;public Renderer renderer;}void Start(){// 1、获取自身的InteractionBehaviour组件_intObj = GetComponent<InteractionBehaviour>();if (rends.Length > 0){_materials = new Material[rends.Length];for (int i = 0; i < rends.Length; i++){_materials[i] = rends[i].renderer.materials[rends[i].materialID];}}}void Update(){if (_materials != null){// The target color for the Interaction object will be determined by various simple state checks.Color targetColor = defaultColor;// "Primary hover" is a special kind of hover state that an InteractionBehaviour can// only have if an InteractionHand's thumb, index, or middle finger is closer to it// than any other interaction object.// 2、判断isPrimaryHovered是否为True，如果是，则表示我们的手放在了物体上，并且触发悬停。usePrimaryHover选项限制，需要勾选才触发if (_intObj.isPrimaryHovered && usePrimaryHover){targetColor = primaryHoverColor;// 2.1、变为设置好的颜色}else{// Of course, any number of objects can be hovered by any number of InteractionHands.// InteractionBehaviour provides an API for accessing various interaction-related// state information such as the closest hand that is hovering nearby, if the object// is hovered at all.// 3、判断isHovered 是否为Trueif (_intObj.isHovered && useHover){float glow = _intObj.closestHoveringControllerDistance.Map(0F, 0.2F, 1F, 0.0F);targetColor = Color.Lerp(defaultColor, hoverColor, glow);}}// 3、判断isSuspended是否暂停，如果是则改变颜色if (_intObj.isSuspended){// If the object is held by only one hand and that holding hand stops tracking, the// object is "suspended." InteractionBehaviour provides suspension callbacks if you'd// like the object to, for example, disappear, when the object is suspended.// Alternatively you can check "isSuspended" at any time.targetColor = suspendedColor;}// We can also check the depressed-or-not-depressed state of InteractionButton objects// and assign them a unique color in that case.if (_intObj is InteractionButton && (_intObj as InteractionButton).isPressed){targetColor = pressedColor;}// Lerp actual material color to the target color.for (int i = 0; i < _materials.Length; i++){_materials[i].color = Color.Lerp(_materials[i].color, targetColor, 30F * Time.deltaTime);// 2.2、 改变颜色}}}}
}