BitmapToASCii

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using System; using System.Collections.Generic; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks;   namespace PicToASCii {     public static class ASCiiHelper     {         public static string Generate(Bitmap bitmap, int rowSize, int colSize, int type)         {             StringBuilder result = new StringBuilder();             char[] charset = { ' ', '.', ',', ':', ';', 'i', '1', 'r', 's', '5', '3', 'A', 'H', '9', '8', '&', '@', '#' };             if (type == 1)             {                 //charset = new char[] { '8', '9', '6', '4', '3', '5', '7', '0', '2', '1', '.',' ' };                 charset = new char[] { ' ', '.', '1', '2', '0', '7', '5', '3', '4', '6', '9', '8' };             }             else if (type == 2)             {                 charset = new char[] { '丶', '卜', '乙', '日', '瓦', '車', '馬', '龠', '齱', '龖' };             }             int bitmapH = bitmap.Height;             int bitmapW = bitmap.Width;             for (int h = 0; h < bitmapH / rowSize; h++)             {                 int offsetY = h * rowSize;                 for (int w = 0; w < bitmapW / colSize; w++)                 {                     int offsetX = w * colSize;                     float averBright = 0;                     for (int j = 0; j < rowSize; j++)                     {                         for (int i = 0; i < colSize; i++)                         {                             try                             {                                 Color color = bitmap.GetPixel(offsetX + i, offsetY + j);                                 averBright += color.GetBrightness();                             }                             catch (ArgumentOutOfRangeException)                             {                                 averBright += 0;                             }                         }                     }                     averBright /= (rowSize * colSize);                     int index = (int)(averBright * charset.Length);                     if (index == charset.Length)                         index--;                     result.Append(charset[charset.Length - 1 - index]);                 }                 result.Append("\r\n");             }             return result.ToString();         }     } }