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Only preallocate the memory when usin moveto/lineto

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This commit is contained in:
Martin Tůma 2023-05-17 23:10:45 +02:00
parent 81e967f20d
commit e351eb6370
1 changed files with 12 additions and 8 deletions
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20
src/map/mapsforge/rastertile.cpp
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@ -200,17 +200,17 @@ QPainterPath RasterTile::painterPath(const Polygon &polygon, bool curve) const
{ {
QPainterPath path; QPainterPath path;
if (curve) {
#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0) #if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
int size = 0; int size = 0;
for (int i = 0; i < polygon.size(); i++) for (int i = 0; i < polygon.size(); i++)
size += polygon.at(i).size(); size += polygon.at(i).size();
path.reserve(size); path.reserve(size);
#endif // QT 5.13 #endif // QT 5.13
for (int i = 0; i < polygon.size(); i++) { for (int i = 0; i < polygon.size(); i++) {
const QVector<Coordinates> &subpath = polygon.at(i); const QVector<Coordinates> &subpath = polygon.at(i);
if (curve) {
QPointF p1(ll2xy(subpath.first())); QPointF p1(ll2xy(subpath.first()));
QPointF p2(0, 0); QPointF p2(0, 0);
QPointF p3(0, 0); QPointF p3(0, 0);
@ -223,7 +223,11 @@ QPainterPath RasterTile::painterPath(const Polygon &polygon, bool curve) const
p1 = p3; p1 = p3;
} }
path.quadTo(p2, p3); path.quadTo(p2, p3);
} else { }
} else {
for (int i = 0; i < polygon.size(); i++) {
const QVector<Coordinates> &subpath = polygon.at(i);
QVector<QPointF> p(subpath.size()); QVector<QPointF> p(subpath.size());
for (int j = 0; j < subpath.size(); j++) for (int j = 0; j < subpath.size(); j++)
p[j] = ll2xy(subpath.at(j)); p[j] = ll2xy(subpath.at(j));