Question

以下示例是在C＃中从XNA中的Texture2D中提取数据。我的理解是，Texture2D.GetData最初不能用于将数据拉入2D数组。

如果1D数组包含如下值：1, 2, 3, 4, 5, 6, 7, 8, 9

是否可以将该单维数组复制到2D数组中，其中2D数组的值如下：

1, 2, 3
4, 5, 6
7, 8, 9

我的目标是将整个数组从1D复制到2D，而不是迭代并计算索引。我目前的代码是这样的：

    Color[,] TextureDataTo2DArray(Texture2D texture)
    {
        Color[] colors1D = new Color[texture.Width * texture.Height];
        texture.GetData(colors1D);

        Color[,] colors2D = new Color[texture.Width, texture.Height];
        for (int x = 0; x < texture.Width; x++)
            for (int y = 0; y < texture.Height; y++)
                colors2D[x, y] = colors1D[x + y * texture.Width];

        return colors2D;
    }

Answer 1

在将一维数组复制到二维数组中时，模数运算是你的朋友：

Color[,] TextureDataTo2DArray(Texture2D texture)
    {
        Color[] colors1D = new Color[texture.Width * texture.Height];
        texture.GetData(colors1D);

        Color[,] colors2D = new Color[texture.Width, texture.Height];
        for (int i = 0; i < colors1D.Length; i++)
            colors2D[Math.Floor(i / texture.Width), i % texture.Width] = colors1D[i];

        return colors2D;
    }

但是，最终，如果你正在重塑一个数组，你将不得不计算一个形状与另一个形状之间的对应关系。

Answer 2

你可以增加一个计数器

index = 0;

for (int x = 0; x < texture.Width; x++)
    for (int y = 0; y < texture.Height; y++)
        colors2D[x, y] = colors1D[index++];

Answer 3

        static void Main(string[] args)
        {
            int Size_of_OneDimensional = 0;
            int Start_Index = 0;
            int row = 0;
            int column=0;


            Console.WriteLine("Enter The number of elements you want to add in 1-D Array : ");
            Size_of_OneDimensional = Convert.ToInt32(Console.ReadLine());

            int[] One_Dimensional = new int[Size_of_OneDimensional];

                for (int i = 0; i < Size_of_OneDimensional; i++)
                    {
                        Console.WriteLine("Enter "+i+" Element");
                        One_Dimensional[i] = Convert.ToInt32(Console.ReadLine());
                    }

                Console.WriteLine("Emter Number of Row : ");
                row = Convert.ToInt32(Console.ReadLine());

                Console.WriteLine("Emter Number of Colum : ");
                column= Convert.ToInt32(Console.ReadLine());

                int[,] Two_Dimensional = new int[row, column];

                Console.WriteLine("Here is your 2-D Array");

                for (int i = 0; i < row; i++)
                    {
                    if (Start_Index == One_Dimensional.Length)
                        break;
                    for(int j = 0; j < column; j++)
                        {
                        Two_Dimensional[i, j] = One_Dimensional[Start_Index];
                        Start_Index++;     
                        Console.Write(Two_Dimensional[i, j]);
                        }
                        Console.WriteLine();
                    }
                Console.ReadKey();
        }
    }
   }

是否可以按照描述将1D阵列复制到2D阵列，如果是，如何？

3 个答案: