private void Process(Image <Rgba32> img)
{
for (int y = 0; y < height; y += yscale)
{
for (int x = 0; x < width; x += xscale)
{
int gray = ProcessChunk(img, x, y);
char symbol = gray == -1 ? ' ' : Ascii.Symbol(gray);
output.Append(symbol);
}
output.Append(Environment.NewLine);
}
}
static void Main(string[] args)
{
String filename;
string scale;
if (args.Length == 0)
{
Console.Write("Input File Name: ");
filename = Console.ReadLine();
Console.Write("Input scale: ");
scale = Console.ReadLine();
}
else
{
filename = args[0];
scale = args.Length > 1 ? args[1] : DEFAULT_SCALE.ToString();
}
// make sure "scale" is alright
int intscale = DEFAULT_SCALE;
try
{
intscale = int.Parse(scale);
}
catch (FormatException)
{
Console.WriteLine($"Error: {scale} is not an integer.");
return;
}
try
{
Ascii ascii = new Ascii(filename, intscale);
ascii.Export();
}
catch (FileNotFoundException)
{
Console.WriteLine($"Error: File {filename} does not exist.");
}
}