void PaintCharacterSys(Painter& sw, double x, double y, int ch, Font fnt)
{
DrawLock __;
PAINTER_TIMING("CharacterOp");
FT_Face face = FTFace(fnt, NULL);
int glyph_index = FT_Get_Char_Index(face, ch);
if(glyph_index && FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT) == 0)
RenderOutline(face->glyph->outline, sw, x, y + fnt.GetAscent());
sw.EvenOdd(true);
}
void BufferPainter::ApproximateChar(LinearPathConsumer& t, const CharData& ch, double tolerance)
{
PAINTER_TIMING("ApproximateChar");
Value v;
INTERLOCKED {
PAINTER_TIMING("ApproximateChar::Fetch");
static LRUCache<Value, GlyphKey> cache;
cache.Shrink(500000);
sMakeGlyph h;
h.gk.fnt = ch.fnt;
h.gk.chr = ch.ch;
h.gk.tolerance = tolerance;
v = cache.Get(h);
}
#if 0
GlyphPainter chp;
chp.move = chp.pos = Null;
chp.tolerance = tolerance;
PaintCharacter(chp, ch.p, ch.ch, ch.fnt);
Vector<float>& g = chp.glyph;
#else
const Vector<float>& g = ValueTo< Vector<float> >(v);
#endif
int i = 0;
while(i < g.GetCount()) {
Pointf p;
p.x = g[i++];
if(p.x > 1e30) {
p.x = g[i++];
p.y = g[i++];
t.Move(p + ch.p);
}
else {
PAINTER_TIMING("ApproximateChar::Line");
p.y = g[i++];
t.Line(p + ch.p);
}
}
}
void Painter::CharacterOp(double x, double y, int ch, Font fnt)
{
PAINTER_TIMING("CharacterOp");
String s;
INTERLOCKED {
static LRUCache<String, FontChar> cache;
cache.Shrink(100000);
sMakeCharOutline h;
h.fc.fnt = fnt;
h.fc.chr = ch;
s = cache.Get(h);
}
RenderCharPath(s, s.GetLength(), *this, x, y + fnt.Info().GetAscent());
EvenOdd(true);
}
NAMESPACE_UPP
static void sQuadratic(LinearPathConsumer& t, const Pointf& p1, const Pointf& p2, const Pointf& p3,
double qt, int lvl)
{
if(lvl < 16) {
PAINTER_TIMING("Quadratic approximation");
Pointf d = p3 - p1;
double q = Squared(d);
if(q > 1e-30) {
Pointf pd = p2 - p1;
double u = (pd.x * d.x + pd.y * d.y) / q;
if(u <= 0 || u >= 1 || SquaredDistance(u * d, pd) > qt) {
Pointf p12 = Mid(p1, p2);
Pointf p23 = Mid(p2, p3);
Pointf div = Mid(p12, p23);
sQuadratic(t, p1, p12, div, qt, lvl + 1);
sQuadratic(t, div, p23, p3, qt, lvl + 1);
return;
}
}
}
t.Line(p3);
}
