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using UnityEngine;using System.Collections;using System.Collections.Generic;////// 脚本挂载到墙上/// public class ImageFusion : MonoBehaviour { public Texture2D bulletTexture; // 【图片】弹痕 private Texture2D wallTexture; // 【图片】墙 private Texture2D NewWallTexture; // 【图片】墙的备份 private float wall_height; // 【获取墙和弹痕图片的宽高信息】 private float wall_width; private float bullet_height; private float bullet_width; RaycastHit hit; // 获取子弹打击点 private QueueuiQueues; // 存储像素点信息 // Use this for initialization void Start () { uiQueues = new Queue (); wallTexture = GetComponent ().material.mainTexture as Texture2D; // 【备份墙的图片】 NewWallTexture = Instantiate (wallTexture); GetComponent ().material.mainTexture = NewWallTexture; wall_height = wallTexture.height; wall_width = wallTexture.width; bullet_height = bulletTexture.height; bullet_width = bulletTexture.width; Debug.Log (wall_width); Debug.Log (bullet_width); } // Update is called once per frame void Update () { if (Input.GetMouseButtonDown(0)) { Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition); if (Physics.Raycast(ray,out hit)) { if (hit.collider.name == "Plane") { // 得到打击点的图片UV坐标 // UV坐标是当前图片宽高的百分比【左下角(0,0)，右上角(1,1)】 Vector2 uv = hit.textureCoord; uiQueues.Enqueue (uv); for (int i = 0; i < bullet_width; i++) { for (int j = 0; j < bullet_height; j++) { // 先减去弹痕宽度的一半得到最左边的坐标，依次向右递增 float w = uv.x * wall_width - bullet_width / 2 + i; // 同理，从下到上递增 float h = uv.y * wall_height - bullet_height / 2 + j; Color wallColor = NewWallTexture.GetPixel ((int)w, (int)h); Color bulletColor = bulletTexture.GetPixel (i, j); // 修改弹痕位置的像素为两图的融合颜色，若不相乘融合会使用弹痕原图 NewWallTexture.SetPixel ((int)w, (int)h, wallColor * bulletColor); } } // 应用图片 NewWallTexture.Apply (); Invoke ("ReturnWall", 3f); } } } } void ReturnWall() { // 还原以打击点为原点的图片像素点 Vector2 uv = uiQueues.Dequeue (); for (int i = 0; i < bullet_width; i++) { for (int j = 0; j < bullet_height; j++) { float w = uv.x * wall_width - bullet_width / 2 + i; float h = uv.y * wall_height - bullet_height / 2 + j; // 使用原图的像素进行还原 Color wallColor = wallTexture.GetPixel ((int)w,(int)h); NewWallTexture.SetPixel ((int)w, (int)h, wallColor); } } NewWallTexture.Apply (); }}
图片下载地址：https://pan.baidu.com/s/1gfLZwNx
①需要设置这两张图片的TextureType为Advanced；
②这两张图片都要勾选上Read/WriteEnable属性，允许图片进行像素编辑；
③设置弹痕图片的MaxSize为64，Format格式为：RGBA32 bit；
④设置wall图片的MaxSize为2048，Format格式为RGBA32 bit；
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