std::unique_ptr<QgsLineString> QgsGeometryFactory::linestringFromPolyline( const QgsPolylineXY &polyline )
{
QVector< double > x;
x.reserve( polyline.size() );
QVector< double > y;
y.reserve( polyline.size() );
QgsPolylineXY::const_iterator it = polyline.constBegin();
for ( ; it != polyline.constEnd(); ++it )
{
x << it->x();
y << it->y();
}
std::unique_ptr< QgsLineString > line = qgis::make_unique< QgsLineString >( x, y );
return line;
}
int QgsVectorLayerEditUtils::addTopologicalPoints( const QgsGeometry &geom )
{
if ( !mLayer->isSpatial() )
return 1;
if ( geom.isNull() )
{
return 1;
}
int returnVal = 0;
QgsWkbTypes::Type wkbType = geom.wkbType();
switch ( QgsWkbTypes::geometryType( wkbType ) )
{
//line
case QgsWkbTypes::LineGeometry:
{
if ( !QgsWkbTypes::isMultiType( wkbType ) )
{
QgsPolylineXY line = geom.asPolyline();
QgsPolylineXY::const_iterator line_it = line.constBegin();
for ( ; line_it != line.constEnd(); ++line_it )
{
if ( addTopologicalPoints( *line_it ) != 0 )
{
returnVal = 2;
}
}
}
else
{
QgsMultiPolylineXY multiLine = geom.asMultiPolyline();
QgsPolylineXY currentPolyline;
for ( int i = 0; i < multiLine.size(); ++i )
{
QgsPolylineXY::const_iterator line_it = currentPolyline.constBegin();
for ( ; line_it != currentPolyline.constEnd(); ++line_it )
{
if ( addTopologicalPoints( *line_it ) != 0 )
{
returnVal = 2;
}
}
}
}
break;
}
case QgsWkbTypes::PolygonGeometry:
{
if ( !QgsWkbTypes::isMultiType( wkbType ) )
{
QgsPolygonXY polygon = geom.asPolygon();
QgsPolylineXY currentRing;
for ( int i = 0; i < polygon.size(); ++i )
{
currentRing = polygon.at( i );
QgsPolylineXY::const_iterator line_it = currentRing.constBegin();
for ( ; line_it != currentRing.constEnd(); ++line_it )
{
if ( addTopologicalPoints( *line_it ) != 0 )
{
returnVal = 2;
}
}
}
}
else
{
QgsMultiPolygonXY multiPolygon = geom.asMultiPolygon();
QgsPolygonXY currentPolygon;
QgsPolylineXY currentRing;
for ( int i = 0; i < multiPolygon.size(); ++i )
{
currentPolygon = multiPolygon.at( i );
for ( int j = 0; j < currentPolygon.size(); ++j )
{
currentRing = currentPolygon.at( j );
QgsPolylineXY::const_iterator line_it = currentRing.constBegin();
for ( ; line_it != currentRing.constEnd(); ++line_it )
{
if ( addTopologicalPoints( *line_it ) != 0 )
{
returnVal = 2;
}
}
}
}
}
break;
}
case QgsWkbTypes::PointGeometry:
case QgsWkbTypes::UnknownGeometry:
case QgsWkbTypes::NullGeometry:
break;
}
return returnVal;
}
