/// <summary>
///TrueType outline, transform normal
/// </summary>
/// <param name="glyph"></param>
/// <param name="m00"></param>
/// <param name="m01"></param>
/// <param name="m10"></param>
/// <param name="m11"></param>
internal static void TtfTransformWith2x2Matrix(Glyph glyph, float m00, float m01, float m10, float m11)
{
//http://stackoverflow.com/questions/13188156/whats-the-different-between-vector2-transform-and-vector2-transformnormal-i
//http://www.technologicalutopia.com/sourcecode/xnageometry/vector2.cs.htm
//change data on current glyph
float new_xmin = 0;
float new_ymin = 0;
float new_xmax = 0;
float new_ymax = 0;
GlyphPointF[] glyphPoints = glyph.GlyphPoints;
for (int i = 0; i < glyphPoints.Length; ++i)
{
GlyphPointF p = glyphPoints[i];
float x = p.P.X;
float y = p.P.Y;
float newX, newY;
//please note that this is transform normal***
glyphPoints[i] = new GlyphPointF(
newX = (float)Math.Round((x * m00) + (y * m10)),
newY = (float)Math.Round((x * m01) + (y * m11)),
p.onCurve);
//short newX = xs[i] = (short)Math.Round((x * m00) + (y * m10));
//short newY = ys[i] = (short)Math.Round((x * m01) + (y * m11));
//------
if (newX < new_xmin)
{
new_xmin = newX;
}
if (newX > new_xmax)
{
new_xmax = newX;
}
//------
if (newY < new_ymin)
{
new_ymin = newY;
}
if (newY > new_ymax)
{
new_ymax = newY;
}
}
//TODO: review here
glyph.Bounds = new Bounds(
(short)new_xmin, (short)new_ymin,
(short)new_xmax, (short)new_ymax);
}
internal bool dbugIsEqualsWith(GlyphPointF another)
{
return(this.P == another.P && this.onCurve == another.onCurve);
}