public Font LoadFont(FontData font_data)
{
var texture = LoadTexture(font_data.FontSheet);
var glyphs = new Sprite[font_data.GlyphRects.Length];
for (int i = 0; i < font_data.GlyphRects.Length; ++i)
{
var glyph_rect = font_data.GlyphRects[i];
glyphs[i] = new Sprite(texture, glyph_rect.X1, glyph_rect.Y1, glyph_rect.Width, glyph_rect.Height);
}
var font = new Font(texture, glyphs, font_data.PreSpacings, font_data.PostSpacings)
{
Id = font_data.Id
};
return(font);
}
public FontData LoadFontData(string descr_path, string image_path)
{
var sheet_data = LoadPixmapData(image_path);
var glyphs = new RectF[255];
var pre_spacings = new float[255];
var post_spacings = new float[255];
using (var descr_stream = File.OpenRead(descr_path))
{
using (var reader = new StreamReader(descr_stream, Encoding.UTF8))
{
string line;
var idx = 0;
while ((line = reader.ReadLine()) != null)
{
if (line.Length == 0)
{
continue;
}
if (idx == 0 && !line.Equals(FNT_HEADER_TAG))
{
throw new Exception("Invalid Font Description File.");
}
if (line.StartsWith(FNT_CHAR_TAG))
{
string char_def_str = line.Split('=')[1];
string[] char_def_attrs = char_def_str.Split(',');
if (char_def_attrs.Length != 7)
{
throw new Exception(
$"Invalid Font Description File: Invalid Char Definition at line: {line + 1}");
}
int ch_idx = int.Parse(char_def_attrs[0]);
if (ch_idx < 0 || ch_idx > 255)
{
throw new Exception("Invalid Font Description File: Character Id out of range");
}
int letter_reg_x = int.Parse(char_def_attrs[1]);
int letter_reg_y = int.Parse(char_def_attrs[2]);
int letter_reg_w = int.Parse(char_def_attrs[3]);
int letter_reg_h = int.Parse(char_def_attrs[4]);
int letter_pre_spac = int.Parse(char_def_attrs[5]);
int letter_post_spac = int.Parse(char_def_attrs[6]);
glyphs[ch_idx] = RectF.FromBox(letter_reg_x, letter_reg_y, letter_reg_w,
letter_reg_h);
pre_spacings[ch_idx] = letter_pre_spac;
post_spacings[ch_idx] = letter_post_spac;
}
idx++;
}
}
}
var id = Path.GetFileNameWithoutExtension(descr_path);
var font_data = new FontData()
{
FontSheet = sheet_data,
GlyphRects = glyphs,
Id = id,
PreSpacings = pre_spacings,
PostSpacings = post_spacings
};
return(font_data);
}