/// <summary>
/// Sort character ranges and merge overlapping ranges.
/// </summary>
private void NormalizeCharacterRanges()
{
if (CharacterRanges.Count == 0)
{
return;
}
CharacterRanges.Sort((rl, rr) => rl.Start - rr.Start);
var prevRange = CharacterRanges[CharacterRanges.Count - 1];
for (var i = CharacterRanges.Count - 2; i >= 0; i--)
{
var range = CharacterRanges[i];
if (prevRange.Start <= range.End - 1)
{
prevRange = new Range <int>(prevRange.Start, range.End > prevRange.End ? range.End : prevRange.End);
CharacterRanges.RemoveAt(i + 1);
}
else
{
CharacterRanges[i] = prevRange;
prevRange = range;
}
}
CharacterRanges[0] = prevRange;
}
public int GetCharRange(IReadOnlyList <CharacterRange> ranges)
{
for (var i = 0; i <= CharacterRanges.Count - ranges.Count; i++)
{
if (RangeMatchesRange(i, ranges))
{
return(i);
}
}
var result = CharacterRanges.Count;
CharacterRanges.AddRange(ranges.Select(range => new CharRange(range.Min, range.Max)));
return(result);
}
public int GetCharRange(CharacterRange range)
{
for (var i = 0; i < CharacterRanges.Count; i++)
{
var exisingRange = CharacterRanges[i];
if (exisingRange.Min == range.Min && exisingRange.Max == range.Max)
{
return(i);
}
}
var result = CharacterRanges.Count;
CharacterRanges.Add(new CharRange(range.Min, range.Max));
return(result);
}
/// <summary> /// Total number of characters. /// </summary> public int GetCharacterCount() => CharacterRanges.Sum(r => r.End - r.Start + 1);
/// <summary>
/// Add the given character ranges to this <see cref="FontAtlasEntry"/>.
/// Ranges are merged when they overlap.
/// </summary>
/// <param name="ranges">The character ranges to add.</param>
public void AddCharacterRanges(IEnumerable <Range <int> > ranges)
{
CharacterRanges.AddRange(ranges);
NormalizeCharacterRanges();
}
