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LOD fix

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Пелипенко Иван
2023-03-17 13:48:26 +03:00
parent e9b995879a
commit c3d1d0fa69
1 changed files with 33 additions and 29 deletions
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62
libs/graphic/graphic.cpp
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@@ -2206,43 +2206,47 @@ void Graphic::calcLOD(int index) {
if (!m_LODOptimization) return;
GraphicType & t(graphics[index]);
t._lod.clear();
t._lod.reserve(32);
int pcnt = t.polyline.size();
// qDebug() << "calcLOD" << index;
while (pcnt >= 10) {
QPolygonF & pl(t._lod.isEmpty() ? t.polyline : t._lod.back());
t._lod.append(QPolygonF());
QPolygonF & cl(t._lod.back());
cl << pl.front();
int qcnt = (pl.size() + 1) / 4;
pcnt = qcnt * 2 + 2;
int pc = 4;
qreal mx[2] = {0., 0.}, my[2] = {0., 0.}, my_x[2] = {0., 0.}, px, py;
for (int i = 0; i < qcnt; ++i) {
int j = i * 4 + 1;
if (i == qcnt - 1) pc = pl.size() - j - 1;
mx[0] = mx[1] = my_x[0] = my_x[1] = pl[j].x();
my[0] = my[1] = pl[j].y();
for (int k = 1; k < pc; ++k) {
px = pl[j + k].x();
py = pl[j + k].y();
mx[0] = qMin(mx[0], px);
mx[1] = qMax(mx[1], px);
if (my[0] > py) {
my[0] = py;
my_x[0] = px;
}
if (my[1] < py) {
my[1] = py;
my_x[1] = px;
if (pl.size() > 4) {
cl << pl.front();
int qcnt = (pl.size() + 1) / 4;
pcnt = qcnt * 2 + 2;
int pc = 4;
qreal mx[2] = {0., 0.}, my[2] = {0., 0.}, my_x[2] = {0., 0.}, px, py;
for (int i = 0; i < qcnt; ++i) {
int j = i * 4 + 1;
if (i == qcnt - 1) pc = pl.size() - j - 1;
mx[0] = mx[1] = my_x[0] = my_x[1] = pl[j].x();
my[0] = my[1] = pl[j].y();
for (int k = 1; k < pc; ++k) {
px = pl[j + k].x();
py = pl[j + k].y();
mx[0] = qMin(mx[0], px);
mx[1] = qMax(mx[1], px);
if (my[0] > py) {
my[0] = py;
my_x[0] = px;
}
if (my[1] < py) {
my[1] = py;
my_x[1] = px;
}
}
qreal dx = (mx[1] - mx[0]) / 4., cx = (mx[1] + mx[0]) / 2.;
if (my_x[1] >= my_x[0])
cl << QPointF(cx - dx, my[0]) << QPointF(cx + dx, my[1]);
else
cl << QPointF(cx - dx, my[1]) << QPointF(cx + dx, my[0]);
}
qreal dx = (mx[1] - mx[0]) / 4., cx = (mx[1] + mx[0]) / 2.;
if (my_x[1] >= my_x[0])
cl << QPointF(cx - dx, my[0]) << QPointF(cx + dx, my[1]);
else
cl << QPointF(cx - dx, my[1]) << QPointF(cx + dx, my[0]);
}
cl << pl.back();
cl << pl.back();
} else
cl = pl;
// qDebug() << "lod" << t._lod.size() << "->" << cl.size();
}
}