因为最近工作用NGUI比较多，修改图集时还没原图，有时候需要把图集重新切割开来，用代码会比较方便，一下贴出主要代码

首先读取NGUI图集的信息

[csharp] view plaincopy

UIAtlas mAtlas  ;

         GameObject[] SelectedAsset=Selection.gameObjects;

         if (SelectedAsset.Length == )

         {

             mAtlas = SelectedAsset[].GetComponent<UIAtlas>();  

             if (mAtlas != null)

             {

                 string atlasFile = string.Format("{0}.txt", mAtlas.name);

                 string atlasPng = string.Format("{0}.png", mAtlas.name);

                 char[] ch = { '.' };

                 string path = AssetDatabase.GetAssetPath(SelectedAsset[]);

                 FileInfo aFileinfo = new FileInfo(path);

                 string th = aFileinfo.DirectoryName;

                 string[] strs = path.Split(ch);  

                 if (File.Exists(atlasFile))

                 {

                     File.Delete(atlasFile);

                 }

                 StreamWriter sw = new StreamWriter(strs[] + ".txt");

                 StringBuilder sb = new StringBuilder();

                 foreach (UIAtlas.Sprite sprite in mAtlas.spriteList)

                 {

                     sb.AppendLine(string.Format("name:{0}, coordinate:{1}", sprite.name, sprite.outer));

                 }  

                 sw.Write(sb.ToString());

                 sw.Close();  

                 string[] arg = new string[];

                 arg[] = atlasPng;

                 arg[] = th;

                 //print(arg[0]);

                 //print(arg[1]);

                 string path_2 = AssetDatabase.GetAssetPath(Resources.Load("CutAltas/output"));

                 FileInfo aFileinfo_2 = new FileInfo(path_2);

                 string th_2 = aFileinfo_2.DirectoryName;

                 print(th_2);

                 string s = th_2 + "\\Start.exe";

这是主要的代码，接下来用vs编写一个程序切割图集，主要代码如下

[csharp] view plaincopy

namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        string[] p;

        string path = string.Empty;

        public Form1(string[] s)

        {

            InitializeComponent();

            p = s;

            ImageName.Text = p[];

            path = p[];

        }  

        private void button1_Click(object sender, EventArgs e)

        {

            CutImage(path);

            Application.Exit();  

        }  

        void CutImage(string p)

        {

            string path=@"c:\Documents and Settings\Administrator\桌面\";

            string savePath=string.Empty;

            string imagePath = p + "\\"+ImageName.Text;

            string textPath = string.Empty;

            Image img = Image.FromFile(imagePath);  

            char[] c = { '.' };

            string st= ImageName.Text;

            string[] sts = st.Split(c);

            savePath = path + sts[];

            if (!Directory.Exists(savePath))

            {

                Directory.CreateDirectory(savePath);

            }

            textPath = p + "\\"+sts[]+".txt";

            StreamReader sr = new StreamReader(textPath);  

            while (!sr.EndOfStream)

            {

                string newLine = sr.ReadLine();

             //   Regex reg = new Regex(@"name:(?P<name>.+), coordinate:\(x:(?P<x>\d+)\.00, y:(?P<y>\d+)\.00, width:(?P<width>\d+)\.00, height:(?P<height>\d+)\.00\)");

             //   Regex regName = new Regex(@"\bname:\.*");

                string patternName = @"\bname:\w*";

                string patternX = @"\bcoordinate:\(x:\w*\.\d\d";

                string patternY = @"\by:\d*\.\d\d";

                string patternWidth = @"\bwidth:\d*\.\d\d";

                string patternHeight = @"\bheight:\d*\.\d\d";

                string name = savePath+"\\";

                float x=,y=,width=,height=;

                char[] maoHao = { ':' };  

                MatchCollection imageName = Regex.Matches(newLine, patternName, RegexOptions.ExplicitCapture);  

                foreach (Match nextMatch in imageName)

                {

                    int index = nextMatch.Index;

                    string result = nextMatch.ToString();  

                    string[] re = result.Split(maoHao);

                    name += re[re.Length - ];

                    name += ".png";

                  //  MessageBox.Show(re[1]);

                }

                MatchCollection positionX = Regex.Matches(newLine, patternX, RegexOptions.ExplicitCapture);

                foreach (Match nextMatch in positionX)

                {

                    int index = nextMatch.Index;

                    string result = nextMatch.ToString();  

                    string[] re = result.Split(maoHao);

                    x = float.Parse(re[re.Length - ]);

                //    MessageBox.Show(x.ToString());

                }

                MatchCollection positionY = Regex.Matches(newLine, patternY, RegexOptions.ExplicitCapture);

                foreach (Match nextMatch in positionY)

                {

                    int index = nextMatch.Index;

                    string result = nextMatch.ToString();  

                    string[] re = result.Split(maoHao);

                    y = float.Parse(re[re.Length-]);

                //    MessageBox.Show(y.ToString());

                }

                MatchCollection widths = Regex.Matches(newLine, patternWidth, RegexOptions.ExplicitCapture);

                foreach (Match nextMatch in widths)

                {

                    int index = nextMatch.Index;

                    string result = nextMatch.ToString();  

                    string[] re = result.Split(maoHao);

                    width = float.Parse(re[re.Length - ]);

                //    MessageBox.Show(width.ToString());

                }

                MatchCollection heights = Regex.Matches(newLine, patternHeight, RegexOptions.ExplicitCapture);

                foreach (Match nextMatch in heights)

                {

                    int index = nextMatch.Index;

                    string result = nextMatch.ToString();  

                    string[] re = result.Split(maoHao);

                    height = float.Parse(re[re.Length - ]);

                 //   MessageBox.Show(height.ToString());

                 //   MessageBox.Show("Name: " + name + "x :" + x.ToString() + "y :" + y.ToString() + "width :" + width.ToString() + "height :" + height.ToString());

                }

            //    MessageBox.Show("Name: "+name+"x :"+x.ToString()+"y :"+y.ToString()+"width :"+width.ToString()+"height :"+height.ToString());

                Bitmap bmp = new Bitmap(img);

                Rectangle rec = new Rectangle((int)x, (int)y, (int)width, (int)height);

                bmp = bmp.Clone(rec, bmp.PixelFormat);

                bmp.Save(name, System.Drawing.Imaging.ImageFormat.Png);

            }  

            MessageBox.Show("切割完成，返回桌面查看！");

        //    Bitmap bmp = new Bitmap(img, 100, 100);

          //  bmp.Save(path + "newImage.jpg");

        }

    }

}

最后unity要调用vs生成的程序，并且传进参数

static bool StartProcess(string filename, string[] args)

    {

        //print("wwww");

        try

        {

            string s="";

            foreach(string arg in args)

            {

                s += string.Format("\"{0}\" ", arg);

            }

            s = s.Trim();

            print(s);

            Process myprocess = new Process();

            ProcessStartInfo startInfo = new ProcessStartInfo(filename,s);

            myprocess.StartInfo = startInfo;

            myprocess.StartInfo.UseShellExecute = false;

            myprocess.Start();

            return true;

        }

        catch (Exception ex)

        {

            UnityEngine.Debug.Log("出错原因：" + ex.Message);

        }

        return false; 

    }