// Todo: Optimize drawing text.
public void Draw(SpriteBatch _spriteBatch, string text, Vector2 position, Color color, float rotation, float size = 1)
{
if (isDistanceField)
{
distanceFontEffect.Parameters["scale"].SetValue(size);
spriteBatch.Begin(SpriteSortMode.Immediate, BlendState.NonPremultiplied, SamplerState.AnisotropicClamp, null, null, distanceFontEffect);
}
float x = position.X;
float y = position.Y;
for (int i = 0; i < text.Length; ++i)
{
char ch = text[i];
if (ch == '\n' || ch == '\r')
{
x = position.X;
y += (Info.LineHeight + Info.SpacingV) * size;
continue;
}
else if (ch == '\t')
{
CharInfo spaceInfo = Info.CharInfos[' '];
x += (spaceInfo.XAdvance + Info.SpacingH) * size * 4;
continue;
}
if (!Info.CharInfos.ContainsKey(ch))
{
ch = Info.CharInfos.ContainsKey('?') ? '?' : ' ';
}
CharInfo chInfo = Info.CharInfos[ch];
var chKern = new KerningPair();
if (i < text.Length - 1 && Info.HasKerning(text[i], text[i + 1]))
{
chKern = Info.GetKerning(text[i], text[i + 1]);
}
var source = new Rectangle(chInfo.X, chInfo.Y, chInfo.Width, chInfo.Height);
var texture = pageTextures[chInfo.Page];
var drawPosition = new Vector2(x + (chInfo.XOffset * size), y + (chInfo.YOffset * size));
if (isDistanceField)
spriteBatch.Draw(texture, drawPosition, source, color, 0f, Vector2.Zero, size, SpriteEffects.None, 0);
else
_spriteBatch.Draw(texture, drawPosition, source, color, 0f, Vector2.Zero, size, SpriteEffects.None, 0);
x += (chInfo.XAdvance + chKern.Amount + Info.SpacingH) * size;
}
if (isDistanceField)
spriteBatch.End();
}
// Todo: Optimize measuring text.
public Vector2 MeasureString(string text)
{
int width = 0;
int longestWidth = 0;
int height = Info.Base;
for (int i = 0; i < text.Length; ++i)
{
char ch = text[i];
if (ch == '\n' || ch == '\r')
{
if (width > longestWidth)
longestWidth = width;
width = 0;
height += Info.LineHeight + Info.SpacingV;
continue;
}
else if (ch == '\t')
{
CharInfo spaceInfo = Info.CharInfos[' '];
width += (spaceInfo.XAdvance + Info.SpacingH) * 4;
continue;
}
if (!Info.CharInfos.ContainsKey(ch))
{
ch = Info.CharInfos.ContainsKey('?') ? '?' : ' ';
}
CharInfo chInfo = Info.CharInfos[ch];
var chKern = new KerningPair();
if (i < text.Length - 1 && Info.HasKerning(text[i], text[i + 1]))
{
chKern = Info.GetKerning(text[i], text[i + 1]);
}
width += chInfo.XAdvance + chKern.Amount + Info.SpacingH;
}
longestWidth = width;
return new Vector2(longestWidth, height);
}