/// <summary>
/// Generates an image from ascii string.
/// </summary>
/// <param name="ascii"> String to be drawn to the empty bitmap </param>
/// <param name="width"> Width of the newly created bitmap. </param>
/// <param name="font"> Font to be set when drawing the ascii string. <para> * Use monospaced fonts only. </para></param>
/// <param name="color"> Font color. </param>
/// <returns> An image that drawn with the ascii string. </returns>
public Bitmap ASCIIToImage(string ascii, int width, Font font, Color color)
{
var asciiLines = ascii.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
var dim = Graphics.FromImage(new Bitmap(1, 1)).MeasureString(ascii, font);
var asciiImage = new Bitmap((int)dim.Width, (int)dim.Height);
using (Graphics g = Graphics.FromImage(asciiImage))
{
for (int i = 0; i < asciiLines.Length; i++)
{
g.DrawString(asciiLines[i], font, new SolidBrush(color), 0, i * font.Height);
}
}
return(ImageUtils.ResizeImage(asciiImage, width));
}
public static Color[] ExtractColors(Bitmap bmp, int width)
{
var resized = ImageUtils.ResizeImage(bmp, width);
var colors = new Color[resized.Width * resized.Height];
var lockedBitmap = new LockBitmap(resized);
lockedBitmap.LockBits();
for (int y = 0; y < resized.Height; y++)
{
for (int x = 0; x < resized.Width; x++)
{
colors[x + y * resized.Width] = lockedBitmap.GetPixel(x, y);
}
}
lockedBitmap.UnlockBits();
return(colors);
}
/// <summary>
/// Processesing done: Grayscaling, Resizing, Contrast Adjustment.
/// </summary>
/// <param name="bmp"> Source of the bitmap to be processed and passed to the ImageToASCII method. </param>
/// <returns> Ascii string from the processed image. </returns>
public string GenerateASCII(Bitmap bmp, int width, int contrastThreshold)
{
return(ImageToASCII(ImageUtils.Grayscale(ImageUtils.ResizeImage(ImageUtils.SetContrast(bmp, contrastThreshold), width))));
}
/// <summary>
/// Processesing done: Grayscaling, Resizing.
/// </summary>
/// <param name="bmp"> Source of the bitmap to be processed and passed to the ImageToASCII method. </param>
/// <returns> Ascii string from the processed image. </returns>
public string GenerateASCII(Bitmap bmp, int width)
{
return(ImageToASCII(ImageUtils.Grayscale(ImageUtils.ResizeImage(bmp, width))));
}