internal static CharacterWidth[] For(int count)
{
var widths = new CharacterWidth[count];
for (var i = 0; i < widths.Length; i++)
{
widths[i] = new CharacterWidth();
}
return widths;
}
internal static CharacterWidth[] For(int count)
{
var widths = new CharacterWidth[count];
for (var i = 0; i < widths.Length; i++)
{
widths[i] = new CharacterWidth();
}
return(widths);
}
public static string CharacterImageURL(int characterId, CharacterWidth width)
{
return(BASE_URL + $"/Character/{characterId}_{((int)width).ToString()}.jpg");
}
public static string CharacterImageURL(int characterId, CharacterWidth width)
{
return($"{BASE_URL}/characters/{characterId}/portrait?size={(int)width}");
}
public AsciiArt(string text, FIGletFont font = null, CharacterWidth width = CharacterWidth.Fitted)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
if (text.Contains(Environment.NewLine))
{
throw new ArgumentException($"{nameof(text)} can not contain multi line");
}
Text = text;
Font = font ?? FIGletFont.Default;
CharacterWidth = width;
Result = new string[Font.Height];
if (Text.Length == 0)
{
return;
}
switch (width)
{
case CharacterWidth.Full:
{
for (int currentLine = 0; currentLine < Height; currentLine++)
{
StringBuilder lineBuilder = new StringBuilder( );
foreach (char currentChar in Text)
{
lineBuilder.Append(Font.GetCharacter(currentChar, currentLine));
lineBuilder.Append(' ');
}
Result [currentLine] = lineBuilder.ToString( );
}
break;
}
case CharacterWidth.Fitted:
{
for (int currentLine = 0; currentLine < Height; currentLine++)
{
StringBuilder lineBuilder = new StringBuilder( );
foreach (char currentChar in Text)
{
lineBuilder.Append(Font.GetCharacter(currentChar, currentLine));
}
Result [currentLine] = lineBuilder.ToString( );
}
break;
}
case CharacterWidth.Smush:
{
for (int currentLine = 0; currentLine < Height; currentLine++)
{
StringBuilder lineBuilder = new StringBuilder( );
lineBuilder.Append(Font.GetCharacter(Text [0], currentLine));
char lastChar = Text [0];
for (int currentCharIndex = 1; currentCharIndex < Text.Length; currentCharIndex++)
{
char currentChar = Text [currentCharIndex];
string currentCharacterLine = Font.GetCharacter(currentChar, currentLine);
if (lastChar != ' ' &&
currentChar != ' ')
{
if (lineBuilder [lineBuilder.Length - 1] == ' ')
{
lineBuilder [lineBuilder.Length - 1] = currentCharacterLine [0];
}
lineBuilder.Append(currentCharacterLine.Substring(1));
}
else
{
lineBuilder.Append(currentCharacterLine);
}
lastChar = currentChar;
}
Result [currentLine] = lineBuilder.ToString( );
}
break;
}
}
}
/// <summary>
/// Constructs a text display.
/// </summary>
/// <param name="width">Width in characters</param>
/// <param name="height">Height in characters</param>
/// <param name="fontFile">Font texture</param>
/// <param name="convertFont">Enable support for masked fonts</param>
/// <param name="paletteFile">Palette texture</param>
public TextDisplay(uint width, uint height, string fontFile = "font.png", bool convertFont = true, string paletteFile = "palette.png")
{
if (string.IsNullOrEmpty(fontFile))
{
throw new ArgumentNullException("fontFile");
}
if (string.IsNullOrEmpty(paletteFile))
{
throw new ArgumentNullException("paletteFile");
}
Width = width;
Height = height;
_data = new Image(width, height, Color.Black);
_dataTexture = new Texture(_data);
var fontImage = new Image(Path.Combine(DataFolder, fontFile));
CharacterWidth = fontImage.Size.X / 16;
CharacterHeight = fontImage.Size.Y / 16;
if (convertFont)
{
var fontWidth = fontImage.Size.X;
var fontHeight = fontImage.Size.Y;
var fontPixels = fontImage.Pixels;
fontImage.Dispose();
// use top left pixel of space as mask color
var maskX = (32 % 16) * CharacterWidth;
var maskY = (32 / 16) * CharacterHeight * (fontWidth * 4);
var maskI = maskX + maskY;
var maskR = fontPixels[maskI + 0];
var maskG = fontPixels[maskI + 1];
var maskB = fontPixels[maskI + 2];
var maskA = fontPixels[maskI + 3];
for (int i = 0; i < fontPixels.Length; i += 4)
{
var r = fontPixels[i + 0];
var g = fontPixels[i + 1];
var b = fontPixels[i + 2];
var a = fontPixels[i + 3];
if (r == maskR && g == maskG && b == maskB && a == maskA)
{
// mask color, set to transparent
fontPixels[i + 3] = 0;
}
else
{
// set alpha channel to average of rgb
var level = (r + b + g) / 3f;
var alpha = a / 256f;
fontPixels[i + 3] = (byte)(level * alpha);
}
}
fontImage = new Image(fontWidth, fontHeight, fontPixels);
//fontImage.SaveToFile("result.png");
}
_fontTexture = new Texture(fontImage);
_palette = new Image(Path.Combine(DataFolder, paletteFile));
_paletteTexture = new Texture(_palette);
_display = new VertexArray(PrimitiveType.Quads, 4);
_display[0] = new Vertex(new Vector2f(0, 0), new Vector2f(0, 0));
_display[1] = new Vertex(new Vector2f(width * CharacterWidth, 0), new Vector2f(1, 0));
_display[2] = new Vertex(new Vector2f(width * CharacterWidth, height * CharacterHeight), new Vector2f(1, 1));
_display[3] = new Vertex(new Vector2f(0, height * CharacterHeight), new Vector2f(0, 1));
var displayVertexSource = File.ReadAllText(Path.Combine(DataFolder, "texter.vert"));
var displayFragmentSource = File.ReadAllText(Path.Combine(DataFolder, "texter.frag"))
.Replace("#W#", CharacterWidth.ToString("D"))
.Replace("#H#", CharacterHeight.ToString("D"));
_renderer = Shader.FromString(displayVertexSource, displayFragmentSource);
_renderer.SetParameter("data", _dataTexture);
_renderer.SetParameter("dataSize", width, height);
_renderer.SetParameter("font", _fontTexture);
_renderer.SetParameter("palette", _paletteTexture);
}
