【Unity】简单的边缘高亮

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使用方法

Demo

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class HighlightUser : MonoBehaviour
{
   public  enum HighType {on, ConstantOn , ConstantOnImmediate , ConstantSwitch , FlashingOn , Off }
    RaycastHit hit;
    Action<HighlightableObject> action;
    GameObject Target;
    HighType currentType;
    Color CurrentColor=Color.green;

    private HighType CurrentType {
        get {
            return currentType;
        }
        set
        {
            currentType = value;
            SetAction(currentType);
        }
   
    }
    private void Start()
    {
        CurrentType = HighType.on;
    }
    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButton(0))
        {
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            if (Physics.Raycast(ray,out hit))
            {
                Target = hit.collider.gameObject;
                higtObj(Target);
            }
          
        }
    }
    
    void higtObj(GameObject game)
    {
        HighlightableObject highlightableObject;
        game.TryGetComponent<HighlightableObject>(out highlightableObject);
        if (highlightableObject)
        {
            action(highlightableObject);
        }
        else
        {
            game.AddComponent<HighlightableObject>();
            higtObj(game);
        }
    }

     void SetAction(HighType type)
    {
        switch (type)
        {
            case HighType.on:
                action = On;
                break;
            case HighType.ConstantOn:
                action = ConstantOn;
                break;
            case HighType.ConstantOnImmediate:
                action = ConstantOnImmediate;
                break;
            case HighType.ConstantSwitch:
                action = ConstantSwitch;
                break;
            case HighType.FlashingOn:
                action = FlashingOn;
                break;
            case HighType.Off:
                action = Off;
                break;
            default:
                break;
        }

    }
    /// <summary>
    /// 单帧高亮
    /// </summary>
    /// <param name="highlightableObject"></param>
    private void On(HighlightableObject highlightableObject)
    {
        highlightableObject.On(CurrentColor);
    }
    /// <summary>
    /// 持续高亮
    /// </summary>
    /// <param name="highlightableObject"></param>
    private void ConstantOn(HighlightableObject highlightableObject)
    {
        highlightableObject.ConstantOn(CurrentColor);
    }
    /// <summary>
    /// 立刻持续高亮
    /// </summary>
    /// <param name="highlightableObject"></param>
    private void ConstantOnImmediate(HighlightableObject highlightableObject)
    {
        highlightableObject.ConstantOnImmediate(CurrentColor);
    }
    /// <summary>
    /// 切换不断凸显
    /// </summary>
    /// <param name="highlightableObject"></param>
    private void ConstantSwitch(HighlightableObject highlightableObject)
    {
        highlightableObject.ConstantSwitch();
    }
    /// <summary>
    /// 打开闪烁
    /// </summary>
    /// <param name="highlightableObject"></param>
    private void FlashingOn(HighlightableObject highlightableObject)
    {
        highlightableObject.FlashingOn(Color.yellow,Color.blue);
    }
    /// <summary>
    /// 关闭全部高亮
    /// </summary>
    /// <param name="highlightableObject"></param>
    private void Off(HighlightableObject highlightableObject)
    {
        highlightableObject.Off();
    }

    public void SetType(int  highType)
    {
        CurrentType = (HighType)highType;
    }
    public void SetColor(int color)
    {
        if (color==0)
        {
            CurrentColor = Color.red;
        }
        else if (color == 1)
        {
            CurrentColor = Color.green;
        }
        else if (color == 2)
        {
            CurrentColor = Color.blue;
        }
     
    }
}