【Unity】图片融合

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using UnityEngine;using System.Collections;using System.Collections.Generic;/// <summary>/// 脚本挂载到墙上/// </summary>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 Queue<Vector2> uiQueues;// 存储像素点信息// Use this for initializationvoid Start () {uiQueues = new Queue<Vector2> ();wallTexture = GetComponent<MeshRenderer> ().material.mainTexture as Texture2D;// 【备份墙的图片】NewWallTexture = Instantiate (wallTexture);GetComponent<MeshRenderer> ().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 framevoid 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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