internal void DrawCharacter(Character character, Vector3 origin, float w, float h, float kerning, TextInfo info)
{
var cw = character.Bounds.Width;
var ch = character.Bounds.Height;
var cu = character.Bounds.Left;
var cv = character.Bounds.Top;
// CCW from top left
var a = new Vector2(origin.X + kerning, origin.Y);
var b = new Vector2(origin.X + kerning, origin.Y + ch);
var c = new Vector2(origin.X + cw + kerning, origin.Y);
var d = new Vector2(origin.X + cw + kerning, origin.Y + ch);
var uv_a = new Vector2(cu / w, cv / h);
var uv_b = new Vector2(cu / w, (cv + ch) / h);
var uv_c = new Vector2((cu + cw) / w, cv / h);
var uv_d = new Vector2((cu + cw) / w, (cv + ch) / h);
Positions.Add(info.Origin);
Positions.Add(info.Origin);
Positions.Add(info.Origin);
Positions.Add(info.Origin);
Positions.Add(info.Origin);
Positions.Add(info.Origin);
Colors.Add(new Color4(0, 0, 0, 1));
Colors.Add(new Color4(0, 0, 0, 1));
Colors.Add(new Color4(0, 0, 0, 1));
Colors.Add(new Color4(0, 0, 0, 1));
Colors.Add(new Color4(0, 0, 0, 1));
Colors.Add(new Color4(0, 0, 0, 1));
TextureCoordinates.Add(uv_b);
TextureCoordinates.Add(uv_d);
TextureCoordinates.Add(uv_a);
TextureCoordinates.Add(uv_a);
TextureCoordinates.Add(uv_d);
TextureCoordinates.Add(uv_c);
info.Offsets.Add(a);
info.Offsets.Add(c);
info.Offsets.Add(b);
info.Offsets.Add(b);
info.Offsets.Add(c);
info.Offsets.Add(d);
}
internal void DrawText(TextInfo info)
{
//Positions.Clear();
//Colors.Clear();
//TextureCoordinates.Clear();
// http://www.cyotek.com/blog/angelcode-bitmap-font-parsing-using-csharp
int x = 0;
int y = 0;
var w = bmpFont.TextureSize.Width;
var h = bmpFont.TextureSize.Height;
char previousCharacter;
previousCharacter = ' ';
var normalizedText = bmpFont.NormalizeLineBreaks(info.Text);
foreach (char character in normalizedText)
{
switch (character)
{
case '\n':
x = 0;
y -= bmpFont.LineHeight;
break;
default:
Character data = bmpFont[character];
int kerning = bmpFont.GetKerning(previousCharacter, character);
//DrawCharacter(data, x + data.Offset.X + kerning, y + data.Offset.Y, builder);
DrawCharacter(data, new Vector3(x, y, 0), w, h, kerning, info);
x += data.XAdvance + kerning;
break;
}
previousCharacter = character;
}
}