void parseHits(QXmlStreamReader & in, Task & task, const QString subtask)
{
QMultiMap<int, Task::Hit> sortedHits;
while(!in.atEnd()) {
QXmlStreamReader::TokenType token = in.readNext();
if (token == QXmlStreamReader::StartElement) {
QString elementName = in.name().toString();
if (0) {
} else if (elementName.compare("h", Qt::CaseInsensitive) == 0){
Task::Hit hit;
QXmlStreamAttributes attrs = in.attributes();
hit.timestamp = QDateTime::fromString(attrs.value("t").toString(), DATETIMEFORMAT);
hit.duration = attrs.value("d").toString().toUInt();
sortedHits.insertMulti(hit.timestamp.toTime_t(), hit);
}
} else if (token == QXmlStreamReader::EndElement && in.name().toString().compare("hits", Qt::CaseInsensitive) == 0) {
break;
}
}
// remove duplicates
QMultiMap<int, Task::Hit>::iterator itr = sortedHits.begin();
Task::Hit prev;
while(itr != sortedHits.end()) {
if (itr.value() == prev)
itr = sortedHits.erase(itr);
else {
prev = itr.value();
itr++;
}
}
task.hits[subtask] = sortedHits.values();
}
int QgsSnapper::snapMapPoint( const QgsPoint& mapCoordPoint, QList<QgsSnappingResult>& snappingResult, const QList<QgsPoint>& excludePoints )
{
snappingResult.clear();
QMultiMap<double, QgsSnappingResult> snappingResultList;//all snapping results
QMultiMap<double, QgsSnappingResult> currentResultList; //snapping results of examined layer
//start point in (output) map coordinates
QgsPoint layerCoordPoint; //start point in layer coordinates
QgsSnappingResult newResult;
QList<QgsSnapper::SnapLayer>::iterator snapLayerIt;
for ( snapLayerIt = mSnapLayers.begin(); snapLayerIt != mSnapLayers.end(); ++snapLayerIt )
{
if ( !snapLayerIt->mLayer->hasGeometryType() )
continue;
currentResultList.clear();
//transform point from map coordinates to layer coordinates
layerCoordPoint = mMapSettings.mapToLayerCoordinates( snapLayerIt->mLayer, mapCoordPoint );
double tolerance = QgsTolerance::toleranceInMapUnits( snapLayerIt->mTolerance, snapLayerIt->mLayer, mMapSettings, snapLayerIt->mUnitType );
if ( snapLayerIt->mLayer->snapWithContext( layerCoordPoint, tolerance,
currentResultList, snapLayerIt->mSnapTo ) != 0 )
{
//error
}
//transform each result from layer crs to map crs (including distance)
QMultiMap<double, QgsSnappingResult>::iterator currentResultIt;
for ( currentResultIt = currentResultList.begin(); currentResultIt != currentResultList.end(); ++currentResultIt )
{
//for each snapping result: transform start point, snap point and other points into map coordinates to find out distance
//store results in snapping result list
newResult = currentResultIt.value();
newResult.snappedVertex = mMapSettings.layerToMapCoordinates( snapLayerIt->mLayer, currentResultIt.value().snappedVertex );
newResult.beforeVertex = mMapSettings.layerToMapCoordinates( snapLayerIt->mLayer, currentResultIt.value().beforeVertex );
newResult.afterVertex = mMapSettings.layerToMapCoordinates( snapLayerIt->mLayer, currentResultIt.value().afterVertex );
snappingResultList.insert( sqrt( newResult.snappedVertex.sqrDist( mapCoordPoint ) ), newResult );
}
}
//excluded specific points from result
cleanResultList( snappingResultList, excludePoints );
//evaluate results according to snap mode
QMultiMap<double, QgsSnappingResult>::iterator evalIt = snappingResultList.begin();
if ( evalIt == snappingResultList.end() )
{
return 0;
}
//Gives a priority to vertex snapping over segment snapping
QgsSnappingResult returnResult = evalIt.value();
for ( evalIt = snappingResultList.begin(); evalIt != snappingResultList.end(); ++evalIt )
{
if ( evalIt.value().snappedVertexNr != -1 )
{
returnResult = evalIt.value();
snappingResultList.erase( evalIt );
break;
}
}
//We return the preferred result
snappingResult.push_back( returnResult );
if ( mSnapMode == QgsSnapper::SnapWithOneResult )
{
//return only a single result, nothing more to do
}
else if ( mSnapMode == QgsSnapper::SnapWithResultsForSamePosition )
{
//take all snapping results within a certain tolerance because rounding differences may occur
double tolerance = 0.000001;
for ( evalIt = snappingResultList.begin(); evalIt != snappingResultList.end(); ++evalIt )
{
if ( returnResult.snappedVertex.sqrDist( evalIt.value().snappedVertex ) < tolerance*tolerance )
{
snappingResult.push_back( evalIt.value() );
}
}
}
else //take all results
{
for ( evalIt = snappingResultList.begin(); evalIt != snappingResultList.end(); ++evalIt )
{
snappingResult.push_back( evalIt.value() );
}
}
return 0;
}
QByteArray huffman(QByteArray data, MainWindow *mainWindow)
{
// count
int count[tableSize];
qFill(&count[0], &count[tableSize - 1], 0);
for (int i = 0; i < data.size(); ++i)
++count[static_cast<quint8>(data[i])];
QMultiMap<int, QList<QPair<quint8, QBitArray> > > p; // <count, <symbol, code> >
for (int i = 0; i < tableSize; ++i)
{
if (count[i] == 0) continue;
QList<QPair<quint8, QBitArray> > list;
list.append(qMakePair(static_cast<quint8>(i), QBitArray()));
p.insert(count[i], list);
}
// caculate codes from bottom to top
while (p.size() > 1)
{
const int count0 = p.begin().key();
QList<QPair<quint8, QBitArray> > list0 = p.begin().value();
p.erase(p.begin());
const int count1 = p.begin().key();
QList<QPair<quint8, QBitArray> > list1 = p.begin().value();
p.erase(p.begin());
for (QList<QPair<quint8, QBitArray> >::Iterator iter = list0.begin(); iter != list0.end(); ++iter)
{
iter->second.resize(iter->second.size() + 1);
iter->second.setBit(iter->second.size() - 1, false);
}
for (QList<QPair<quint8, QBitArray> >::Iterator iter = list1.begin(); iter != list1.end(); ++iter)
{
iter->second.resize(iter->second.size() + 1);
iter->second.setBit(iter->second.size() - 1, true);
}
p.insert(count0 + count1, list0 + list1);
}
// extract codes
QHash<quint8, QBitArray> codes;
for (QList<QPair<quint8, QBitArray> >::ConstIterator iter = p.begin().value().constBegin(); iter != p.begin().value().constEnd(); ++iter)
{
QBitArray code;
code.resize(iter->second.size());
for (int j = 0; j < code.size(); ++j)
if (iter->second[code.size() - j - 1])
code.setBit(j);
codes[iter->first] = code;
}
// encode
QBitArray bits;
for (int i = 0; i < data.size(); ++i)
{
mainWindow->setProgress(qRound(static_cast<qreal>(100 * i) / data.size()));
const QBitArray &code = codes[static_cast<quint8>(data[i])];
const int oldSize = bits.size();
bits.resize(oldSize + code.size());
for (int i = 0; i < code.size(); ++i)
if (code[i]) bits.setBit(oldSize + i);
}
QByteArray result;
{
QDataStream stream(&result, QIODevice::WriteOnly);
stream << codes << static_cast<qint32>(data.size()) << bits;
}
return result;
}
