/// <summary>
/// Add a letter to the layouter.
/// </summary>
/// <param name="c">The letter to add.</param>
/// <param name="g">The atlas glyph corresponding to the letter.</param>
/// <returns>The draw position of the letter.</returns>
public override Vector2 AddLetter(char c, out AtlasGlyph g)
{
if (_newLineIndices.IndexOf(_counter) != -1)
{
NewLine();
}
_counter++;
return(base.AddLetter(c, out g));
}
/// <summary>
/// Add a letter to the layouter.
/// </summary>
/// <param name="c">The letter to add.</param>
/// <param name="g">The atlas glyph corresponding to the letter.</param>
/// <returns>The draw position of the letter.</returns>
public virtual Vector2 AddLetter(char c, out AtlasGlyph g)
{
Vector2 position = GetNextGlyphPosition(c, out Vector2 drawPosition, out g);
_pen = position;
if (g == null)
{
return(position);
}
_pen.X += g.Advance;
return(drawPosition);
}
/// <summary>
/// Returns the position of the next glyph.
/// </summary>
/// <param name="pen">The position of the pen.</param>
/// <param name="c">The character which is the next glyph.</param>
/// <param name="drawPosition">The position to draw the character at.</param>
/// <param name="g">The atlas glyph corresponding to the provided character, or null if none.</param>
/// <returns>The position of the next glyph along the pen.</returns>
public Vector2 GetNextGlyphPosition(Vector2 pen, char c, out Vector2 drawPosition, out AtlasGlyph g)
{
var result = new Vector2(pen.X, pen.Y);
drawPosition = Vector2.Zero;
g = null;
if (c == '\n')
{
result.X = 0;
result.Y += _atlas.FontHeight + LineGap;
}
else
{
if (!_atlas.Glyphs.TryGetValue(c, out g))
{
if (!_hasZeroGlyph)
{
return(result);
}
g = _atlas.Glyphs[(char)0];
}
drawPosition = result;
drawPosition.Y += g.YBearing;
drawPosition.X = g.XMin + drawPosition.X;
}
return(result);
}
/// <summary>
/// Returns the position of the next glyph.
/// </summary>
/// <param name="c">The character which is the next glyph.</param>
/// <param name="drawPosition">The position to draw the character at.</param>
/// <param name="g">The atlas glyph corresponding to the provided character, or null if none.</param>
/// <returns>The position of the next glyph along the pen.</returns>
public Vector2 GetNextGlyphPosition(char c, out Vector2 drawPosition, out AtlasGlyph g)
{
return(GetNextGlyphPosition(_pen, c, out drawPosition, out g));
}
