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Don't use a map where an array is fully suficient and much faster

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This commit is contained in:
Martin Tůma 2021-09-30 20:26:36 +02:00
parent 3d4adba90a
commit 54db2a5a6c
2 changed files with 27 additions and 30 deletions
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44
src/map/IMG/rgnfile.cpp
View File

@ -538,54 +538,53 @@ bool RGNFile::links(Handle &hdl, const SubDiv *subdiv, quint32 shift,
return true;
}
QMap<RGNFile::SegmentType, SubDiv::Segment> RGNFile::segments(Handle &hdl,
SubDiv *subdiv) const
bool RGNFile::segments(Handle &hdl, SubDiv *subdiv, SubDiv::Segment seg[5]) const
{
QMap<SegmentType, SubDiv::Segment> ret;
if (subdiv->offset() == subdiv->end() || !(subdiv->objects() & 0x1F))
return ret;
return true;
quint32 offset = _offset + subdiv->offset();
if (!seek(hdl, offset))
return false;
int no = 0;
for (quint8 mask = 0x1; mask <= 0x10; mask <<= 1)
if (subdiv->objects() & mask)
for (int i = 0; i < 5; i++)
if (subdiv->objects() & (1<<i))
no++;
if (!seek(hdl, offset))
return ret;
quint32 start = offset + 2 * (no - 1);
quint32 ls = 0;
SegmentType lt = (SegmentType)0;
int lt = 0;
for (quint8 mask = 0x1; mask <= 0x10; mask <<= 1) {
if (subdiv->objects() & mask) {
for (int i = 0; i < 5; i++) {
if (subdiv->objects() & (1<<i)) {
if (ls) {
quint16 po;
if (!readUInt16(hdl, po) || !po)
return QMap<RGNFile::SegmentType, SubDiv::Segment>();
return false;
start = offset + po;
ret.insert(lt, SubDiv::Segment(ls, start));
seg[lt] = SubDiv::Segment(ls, start);
}
lt = (SegmentType)mask;
lt = i;
ls = start;
}
}
ret.insert(lt, SubDiv::Segment(ls, subdiv->end()
? _offset + subdiv->end() : _offset + _size));
seg[lt] = SubDiv::Segment(ls,
subdiv->end() ? _offset + subdiv->end() : _offset + _size);
return ret;
return true;
}
bool RGNFile::subdivInit(Handle &hdl, SubDiv *subdiv) const
{
QMap<RGNFile::SegmentType, SubDiv::Segment> seg(segments(hdl, subdiv));
SubDiv::Segment seg[5];
SubDiv::Segment extPoints, extLines, extPolygons;
if (!segments(hdl, subdiv, seg))
return false;
if (subdiv->extPointsOffset() != subdiv->extPointsEnd()) {
quint32 start = _pointsOffset + subdiv->extPointsOffset();
quint32 end = subdiv->extPointsEnd()
@ -608,9 +607,8 @@ bool RGNFile::subdivInit(Handle &hdl, SubDiv *subdiv) const
extLines = SubDiv::Segment(start, end);
}
subdiv->init(seg.value(Point), seg.value(IndexedPoint), seg.value(Line),
seg.value(Polygon), seg.value(RoadReference), extPoints, extLines,
extPolygons);
subdiv->init(seg[Point], seg[IndexedPoint], seg[Line], seg[Polygon],
seg[RoadReference], extPoints, extLines, extPolygons);
return true;
}

13
src/map/IMG/rgnfile.h
View File

@ -15,11 +15,11 @@ class RGNFile : public SubFile
{
public:
enum SegmentType {
Point = 0x1,
IndexedPoint = 0x2,
Line = 0x4,
Polygon = 0x8,
RoadReference = 0x10
Point,
IndexedPoint,
Line,
Polygon,
RoadReference
};
RGNFile(const IMGData *img)
@ -61,8 +61,7 @@ public:
quint32 dictSize() const {return _dictSize;}
private:
QMap<SegmentType, SubDiv::Segment> segments(Handle &hdl, SubDiv *subdiv)
const;
bool segments(Handle &hdl, SubDiv *subdiv, SubDiv::Segment seg[5]) const;
bool readClassFields(Handle &hdl, SegmentType segmentType,
MapData::Poly *poly = 0, const LBLFile *lbl = 0) const;
bool skipLclFields(Handle &hdl, const quint32 flags[3]) const;