void QgsOverlayAnalyzer::combineAttributeMaps( QgsAttributeMap& attributeMapA, QgsAttributeMap attributeMapB )
{
QMap<int, QVariant>::const_iterator i = attributeMapB.constBegin();
QVariant attribute;
int fcount = attributeMapA.size();
while ( i != attributeMapB.constEnd() )
{
attribute = i.value();
attributeMapA.insert( fcount, attribute );
++i;
++fcount;
}
}
bool QgsVectorLayerEditBuffer::changeAttributeValues( QgsFeatureId fid, const QgsAttributeMap &newValues, const QgsAttributeMap &oldValues )
{
bool success = true;
for ( auto it = newValues.constBegin() ; it != newValues.constEnd(); ++it )
{
const int field = it.key();
const QVariant newValue = it.value();
QVariant oldValue;
if ( oldValues.contains( field ) )
oldValue = oldValues[field];
success &= changeAttributeValue( fid, field, newValue, oldValue );
}
return success;
}
void QgsMapToolChangeLabelProperties::applyChanges( const QgsAttributeMap& changes )
{
QgsVectorLayer* vlayer = mCurrentLabel.layer;
if ( !vlayer )
return;
if ( !changes.isEmpty() )
{
vlayer->beginEditCommand( tr( "Changed properties for label" ) + QStringLiteral( " '%1'" ).arg( currentLabelText( 24 ) ) );
QgsAttributeMap::const_iterator changeIt = changes.constBegin();
for ( ; changeIt != changes.constEnd(); ++changeIt )
{
vlayer->changeAttributeValue( mCurrentLabel.pos.featureId, changeIt.key(), changeIt.value() );
}
vlayer->endEditCommand();
vlayer->triggerRepaint();
}
}
void RgLineVectorLayerDirector::makeGraph( RgGraphBuilder *builder, const QVector< QgsPoint >& additionalPoints,
QVector< QgsPoint >& tiedPoint ) const
{
QgsVectorLayer *vl = myLayer();
if ( vl == NULL )
return;
int featureCount = ( int ) vl->featureCount() * 2;
int step = 0;
QgsCoordinateTransform ct;
QgsDistanceArea da;
ct.setSourceCrs( vl->crs() );
if ( builder->coordinateTransformEnabled() )
{
ct.setDestCRS( builder->destinationCrs() );
da.setProjectionsEnabled( true );
//
//da.setSourceCrs( builder->destinationCrs().srsid() );
//
}
else
{
ct.setDestCRS( vl->crs() );
da.setProjectionsEnabled( false );
}
tiedPoint = QVector< QgsPoint >( additionalPoints.size(), QgsPoint( 0.0, 0.0 ) );
TiePointInfo tmpInfo;
tmpInfo.mLength = infinity();
QVector< TiePointInfo > pointLengthMap( additionalPoints.size(), tmpInfo );
QVector< TiePointInfo >::iterator pointLengthIt;
// begin: tie points to the graph
QgsAttributeList la;
vl->select( la );
QgsFeature feature;
while ( vl->nextFeature( feature ) )
{
QgsMultiPolyline mpl;
if ( feature.geometry()->wkbType() == QGis::WKBLineString )
{
mpl.push_back( feature.geometry()->asPolyline() );
}else if ( feature.geometry()->wkbType() == QGis::WKBMultiLineString )
{
mpl = feature.geometry()->asMultiPolyline();
}
QgsMultiPolyline::iterator mplIt;
for ( mplIt = mpl.begin(); mplIt != mpl.end(); ++mplIt )
{
QgsPoint pt1, pt2;
bool isFirstPoint = true;
QgsPolyline::iterator pointIt;
for ( pointIt = mplIt->begin(); pointIt != mplIt->end(); ++pointIt )
{
pt2 = builder->addVertex( ct.transform( *pointIt ) );
if ( !isFirstPoint )
{
int i = 0;
for ( i = 0; i != additionalPoints.size(); ++i )
{
TiePointInfo info;
if ( pt1 == pt2 )
{
info.mLength = additionalPoints[ i ].sqrDist( pt1 );
info.mTiedPoint = pt1;
}
else
{
info.mLength = additionalPoints[ i ].sqrDistToSegment( pt1.x(), pt1.y(), pt2.x(), pt2.y(), info.mTiedPoint );
}
if ( pointLengthMap[ i ].mLength > info.mLength )
{
info.mTiedPoint = builder->addVertex( info.mTiedPoint );
info.mFirstPoint = pt1;
info.mLastPoint = pt2;
pointLengthMap[ i ] = info;
tiedPoint[ i ] = info.mTiedPoint;
}
}
}
pt1 = pt2;
isFirstPoint = false;
}
}
emit buildProgress( ++step, featureCount );
}
// end: tie points to graph
if ( mDirectionFieldId != -1 )
{
la.push_back( mDirectionFieldId );
}
if ( mSpeedFieldId != -1 )
{
la.push_back( mSpeedFieldId );
}
SpeedUnit su = SpeedUnit::byName( mSpeedUnitName );
// begin graph construction
vl->select( la );
while ( vl->nextFeature( feature ) )
{
QgsAttributeMap attr = feature.attributeMap();
int directionType = mDefaultDirection;
QgsAttributeMap::const_iterator it;
// What direction have feature?
for ( it = attr.constBegin(); it != attr.constEnd(); ++it )
{
if ( it.key() != mDirectionFieldId )
{
continue;
}
QString str = it.value().toString();
if ( str == mBothDirectionValue )
{
directionType = 3;
}
else if ( str == mDirectDirectionValue )
{
directionType = 1;
}
else if ( str == mReverseDirectionValue )
{
directionType = 2;
}
}
// What speed have feature?
double speed = 0.0;
for ( it = attr.constBegin(); it != attr.constEnd(); ++it )
{
if ( it.key() != mSpeedFieldId )
{
continue;
}
speed = it.value().toDouble();
}
if ( speed <= 0.0 )
{
speed = mDefaultSpeed;
}
// begin features segments and add arc to the Graph;
QgsMultiPolyline mpl;
if ( feature.geometry()->wkbType() == QGis::WKBLineString )
{
mpl.push_back( feature.geometry()->asPolyline() );
}else if ( feature.geometry()->wkbType() == QGis::WKBMultiLineString )
{
mpl = feature.geometry()->asMultiPolyline();
}
QgsMultiPolyline::iterator mplIt;
for ( mplIt = mpl.begin(); mplIt != mpl.end(); ++mplIt )
{
QgsPoint pt1, pt2;
bool isFirstPoint = true;
QgsPolyline::iterator pointIt;
for ( pointIt = mplIt->begin(); pointIt != mplIt->end(); ++pointIt )
{
pt2 = builder->addVertex( ct.transform( *pointIt ) );
std::map< double, QgsPoint > pointsOnArc;
pointsOnArc[ 0.0 ] = pt1;
pointsOnArc[ pt1.sqrDist( pt2 )] = pt2;
for ( pointLengthIt = pointLengthMap.begin(); pointLengthIt != pointLengthMap.end(); ++pointLengthIt )
{
if ( pointLengthIt->mFirstPoint == pt1 && pointLengthIt->mLastPoint == pt2 )
{
QgsPoint tiedPoint = pointLengthIt->mTiedPoint;
pointsOnArc[ pt1.sqrDist( tiedPoint )] = tiedPoint;
}
}
if ( !isFirstPoint )
{
std::map< double, QgsPoint >::iterator pointsIt;
QgsPoint pt1;
QgsPoint pt2;
bool isFirstPoint = true;
for ( pointsIt = pointsOnArc.begin(); pointsIt != pointsOnArc.end(); ++pointsIt )
{
pt2 = pointsIt->second;
if ( !isFirstPoint )
{
double cost = da.measureLine( pt1, pt2 );
if ( directionType == 1 ||
directionType == 3 )
{
builder->addArc( pt1, pt2, cost, speed*su.multipler(), feature.id() );
}
if ( directionType == 2 ||
directionType == 3 )
{
builder->addArc( pt2, pt1, cost, speed*su.multipler(), feature.id() );
}
}
pt1 = pt2;
isFirstPoint = false;
}
} // if ( !isFirstPoint )
pt1 = pt2;
isFirstPoint = false;
}
} // for (it = pl.begin(); it != pl.end(); ++it)
emit buildProgress( ++step, featureCount );
} // while( vl->nextFeature(feature) )
} // makeGraph( RgGraphBuilder *builder, const QgsRectangle& rt )