BitmapToASCii
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);
}
result.Append("\r\n");
}
return result.ToString();
}
}
}
文档来源：51CTO技术博客https://blog.51cto.com/u_15316096/3209766
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