用C#拼接图像

时间:2012-08-23 12:19:52

标签: c# image sprite

我目前正在制作一个精灵表制作者,但我无法拼接目录中的所有图像。到目前为止,我有一些代码可以读取用户输入的目录中所有文件的名称,并将它们放在一个字符串列表中。但是我不知道如何将它们拼接在一起。
我现在已经添加了拼接图像的代码,并在程序保存拼接图像时获得异常 我输入的图像是* .png,输出也是如此。图像需要水平缝合 我目前的代码:

static void Main()
        {
            bool cont = false;
            bool skip = false;
            while (cont == false)
            {
                Console.WriteLine("Enter a Folder name(end to end):");
                string fold = Console.ReadLine();
                if (fold.Equals("end"))
                {
                    break;
                }
                try
                {
                    string[] files = Directory.GetFiles(@"sprites\" + fold, "*.PNG");
                    foreach (string file in files)
                    {
                        Console.WriteLine(file);
                    }
                    skip = false;
                }
                catch (Exception)
                {
                    Console.WriteLine("Folder not Found!");
                    Console.WriteLine("Try Again!");
                    cont = false;
                    skip = true;
                }
                if (skip != true)
                {
                    try
                    {
                        string[] files = Directory.GetFiles(@"sprites\" + fold, "*.PNG");
                        System.Drawing.Bitmap stitchedImage = Combine(files);
                        Console.WriteLine("save filename (no extention)");
                        string fil = Console.ReadLine();
                        stitchedImage.Save(@"/sheets/"+fil+".png", System.Drawing.Imaging.ImageFormat.Png);
                        cont = true;
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine("Error Creating Sprite Sheet");
                        Console.WriteLine(ex);
                        Console.WriteLine("Please Try Again!");
                    }
                }
            }
            Console.WriteLine("Done!");
            Console.WriteLine("Program will now exit(Enter to continue)");
            Console.ReadLine();
        }
        public static System.Drawing.Bitmap Combine(string[] files)
        {
            //read all images into memory
            List<System.Drawing.Bitmap> images = new List<System.Drawing.Bitmap>();
            System.Drawing.Bitmap finalImage = null;

            try
            {
                int width = 0;
                int height = 0;

                foreach (string image in files)
                {
                    //create a Bitmap from the file and add it to the list
                    System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(image);

                    //update the size of the final bitmap
                    width += bitmap.Width;
                    height = bitmap.Height > height ? bitmap.Height : height;

                    images.Add(bitmap);
                }

                //create a bitmap to hold the combined image
                finalImage = new System.Drawing.Bitmap(width, height);

                //get a graphics object from the image so we can draw on it
                using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(finalImage))
                {
                    //set background color
                    g.Clear(System.Drawing.Color.Black);

                    //go through each image and draw it on the final image
                    int offset = 0;
                    foreach (System.Drawing.Bitmap image in images)
                    {
                        g.DrawImage(image,
                          new System.Drawing.Rectangle(offset, 0, image.Width, image.Height));
                        offset += image.Width;
                    }
                }

                return finalImage;
            }
            catch (Exception ex)
            {
                if (finalImage != null)
                {
                    finalImage.Dispose();
                }
                Console.WriteLine(ex);
                throw ex;
            }
            finally
            {
                //clean up memory
                foreach (System.Drawing.Bitmap image in images)
                {
                    image.Dispose();
                }
            }
        }

2 个答案:

答案 0 :(得分:0)

为什么不使用像SpriteMe这样的许多工具之一?

,而不是自己构建一些东西

答案 1 :(得分:0)

真的不那么难 - 依次解锁每个图像的位并将其写入新图像(考虑空/边界/缓冲像素)。

您需要预先确定横向和横向的图像数量,每个图像的大小,以及最终的图像尺寸。图像格式(pixelFormat - 是否需要透明度等) 您可以设置Stride或让.Net为您设置等等。

通常你希望尺寸为2的幂或4的幂 - 依赖于最终的精灵表的使用。您可能还需要将图像转换为不直接支持的DDS。网络。