private void calculateAllCharacterSizes()
{
var stringFormat = StringFormat.GenericTypographic;
stringFormat.FormatFlags |= StringFormatFlags.MeasureTrailingSpaces;
using var g = System.Drawing.Graphics.FromImage(measureBitmap);
applyGraphicsSettings(g);
var brush = new SolidBrush(System.Drawing.Color.White);
var drawPos = new PointF(font.Height, font.Height);
foreach (var c in supportedCharacters.Concat(new[] { fallbackGlyph }))
{
g.Clear(System.Drawing.Color.FromArgb(0, 0, 0, 0));
g.DrawString(c.ToString(), font, brush, drawPos);
var(xMin, xMax, yMin, yMax) = findBoundingBoxForCurrentBitmap();
var characterInfo = new MutableCharacterInfo
{
Size = new Vector2i(xMax - xMin + 1, yMax - yMin + 1),
Offset = new Vector2i(xMin - font.Height, yMin - font.Height),
SpacingWidth = g.MeasureString(c.ToString(), font, 0, stringFormat).Width,
};
characterInfos.Add(c, characterInfo);
}
}
private CharacterInfo toCharacterInfo(MutableCharacterInfo info, int textureWidth, int textureHeight)
{
var fontHeightInverse = 1f / font.Height;
var pixelSize = new Vector2(1f / textureWidth, 1f / textureHeight);
return(new CharacterInfo(
info.Size.ToVector2() * fontHeightInverse,
info.Offset.ToVector2() * fontHeightInverse,
info.SpacingWidth * fontHeightInverse,
pixelSize * info.TopLeft.ToVector2(),
pixelSize * (info.TopLeft + info.Size).ToVector2()));
}
