static CompositeGlyph ReadCompositeGlyph(DataReader reader)
{
// we need to keep reading glyphs for as long as
// our flags tell us that there are more to read
var subglyphs = new List <Subglyph>();
CompositeGlyphFlags flags;
do
{
flags = (CompositeGlyphFlags)reader.ReadUInt16BE();
var subglyph = new Subglyph {
Flags = flags
};
subglyph.Index = reader.ReadUInt16BE();
// read in args; they vary in size based on flags
if ((flags & CompositeGlyphFlags.ArgsAreWords) != 0)
{
subglyph.Arg1 = reader.ReadInt16BE();
subglyph.Arg2 = reader.ReadInt16BE();
}
else
{
subglyph.Arg1 = reader.ReadSByte();
subglyph.Arg2 = reader.ReadSByte();
}
// figure out the transform; we can either have no scale, a uniform
// scale, two independent scales, or a full 2x2 transform matrix
// transform components are in 2.14 fixed point format
var transform = Matrix3x2.Identity;
if ((flags & CompositeGlyphFlags.HaveScale) != 0)
{
var scale = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M11 = scale;
transform.M22 = scale;
}
else if ((flags & CompositeGlyphFlags.HaveXYScale) != 0)
{
transform.M11 = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M22 = reader.ReadInt16BE() / F2Dot14ToFloat;
}
else if ((flags & CompositeGlyphFlags.HaveTransform) != 0)
{
transform.M11 = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M12 = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M21 = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M22 = reader.ReadInt16BE() / F2Dot14ToFloat;
}
subglyph.Transform = transform;
subglyphs.Add(subglyph);
} while ((flags & CompositeGlyphFlags.MoreComponents) != 0);
var result = new CompositeGlyph {
Subglyphs = subglyphs.ToArray()
};
// if we have instructions, read them now
if ((flags & CompositeGlyphFlags.HaveInstructions) != 0)
{
var instructionLength = reader.ReadUInt16BE();
result.Instructions = reader.ReadBytes(instructionLength);
}
return(result);
}
static CompositeGlyph ReadCompositeGlyph(DataReader reader)
{
// we need to keep reading glyphs for as long as
// our flags tell us that there are more to read
var subglyphs = new List<Subglyph>();
CompositeGlyphFlags flags;
do
{
flags = (CompositeGlyphFlags)reader.ReadUInt16BE();
var subglyph = new Subglyph { Flags = flags };
subglyph.Index = reader.ReadUInt16BE();
// read in args; they vary in size based on flags
if ((flags & CompositeGlyphFlags.ArgsAreWords) != 0)
{
subglyph.Arg1 = reader.ReadInt16BE();
subglyph.Arg2 = reader.ReadInt16BE();
}
else
{
subglyph.Arg1 = reader.ReadSByte();
subglyph.Arg2 = reader.ReadSByte();
}
// figure out the transform; we can either have no scale, a uniform
// scale, two independent scales, or a full 2x2 transform matrix
// transform components are in 2.14 fixed point format
var transform = Matrix3x2.Identity;
if ((flags & CompositeGlyphFlags.HaveScale) != 0)
{
var scale = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M11 = scale;
transform.M22 = scale;
}
else if ((flags & CompositeGlyphFlags.HaveXYScale) != 0)
{
transform.M11 = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M22 = reader.ReadInt16BE() / F2Dot14ToFloat;
}
else if ((flags & CompositeGlyphFlags.HaveTransform) != 0)
{
transform.M11 = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M12 = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M21 = reader.ReadInt16BE() / F2Dot14ToFloat;
transform.M22 = reader.ReadInt16BE() / F2Dot14ToFloat;
}
subglyph.Transform = transform;
subglyphs.Add(subglyph);
} while ((flags & CompositeGlyphFlags.MoreComponents) != 0);
var result = new CompositeGlyph { Subglyphs = subglyphs.ToArray() };
// if we have instructions, read them now
if ((flags & CompositeGlyphFlags.HaveInstructions) != 0)
{
var instructionLength = reader.ReadUInt16BE();
result.Instructions = reader.ReadBytes(instructionLength);
}
return result;
}
