void QTessellatorPrivate::emitEdges(QTessellator *tessellator)
{
//QDEBUG() << "TRAPS:";
if (!scanline.old_size)
return;
// emit edges
if (winding) {
// winding fill rule
int w = 0;
scanline.old[0]->y_left = y;
for (int i = 0; i < scanline.old_size - 1; ++i) {
Edge *left = scanline.old[i];
Edge *right = scanline.old[i+1];
w += left->winding;
// qDebug() << "i=" << i << "edge->winding=" << left->winding << "winding=" << winding;
if (w == 0) {
left->y_right = y;
right->y_left = y;
} else if (!emit_clever || left->mark || right->mark) {
Q27Dot5 top = qMax(left->y_right, right->y_left);
if (top != y) {
QTessellator::Trapezoid trap;
fillTrapezoid(top, y, left->edge, right->edge, vertices, &trap);
tessellator->addTrap(trap);
// QDEBUG() << " top=" << Q27Dot5ToDouble(top) << "left=" << left->edge << "right=" << right->edge;
}
right->y_left = y;
left->y_right = y;
}
left->mark = false;
}
if (scanline.old[scanline.old_size - 1]->mark) {
scanline.old[scanline.old_size - 1]->y_right = y;
scanline.old[scanline.old_size - 1]->mark = false;
}
} else {
// odd-even fill rule
for (int i = 0; i < scanline.old_size; i += 2) {
Edge *left = scanline.old[i];
Edge *right = scanline.old[i+1];
if (!emit_clever || left->mark || right->mark) {
Q27Dot5 top = qMax(left->y_right, right->y_left);
if (top != y) {
QTessellator::Trapezoid trap;
fillTrapezoid(top, y, left->edge, right->edge, vertices, &trap);
tessellator->addTrap(trap);
}
// QDEBUG() << " top=" << Q27Dot5ToDouble(top) << "left=" << left->edge << "right=" << right->edge;
left->y_left = y;
left->y_right = y;
right->y_left = y;
right->y_right = y;
left->mark = right->mark = false;
}
}
}
}
void GridHealerVertical::doHealingOnBelowAndAboveRangePair (QImage &image,
int yBelowStart,
int yBelowEnd,
int yAboveStart,
int yAboveEnd)
{
// LOG4CPP_INFO_S is replaced by GridLog
int x0 = m_blackPixelsBelow [yBelowStart];
int x1 = m_blackPixelsBelow [yBelowEnd ];
int x2 = m_blackPixelsAbove [yAboveEnd ];
int x3 = m_blackPixelsAbove [yAboveStart];
int y0 = yBelowStart;
int y1 = yBelowEnd;
int y2 = yAboveEnd;
int y3 = yAboveStart;
gridLog().showOutputTrapezoid (QPoint (x0, y0),
QPoint (x1, y1),
QPoint (x2, y2),
QPoint (x3, y3));
if (pointsAreGood (image, x0, y0, x2, y2)) {
// Big enough so keep it. Four points that define the trapezoid to be filled in
fillTrapezoid (image,
x0, y0,
x1, y1,
x2, y2,
x3, y3);
}
}
