QgsAbstractGeometryV2* QgsMultiPolygonV2::boundary() const
{
QgsMultiLineStringV2* multiLine = new QgsMultiLineStringV2();
for ( int i = 0; i < mGeometries.size(); ++i )
{
if ( QgsPolygonV2* polygon = dynamic_cast<QgsPolygonV2*>( mGeometries.at( i ) ) )
{
QgsAbstractGeometryV2* polygonBoundary = polygon->boundary();
if ( QgsLineStringV2* lineStringBoundary = dynamic_cast< QgsLineStringV2* >( polygonBoundary ) )
{
multiLine->addGeometry( lineStringBoundary );
}
else if ( QgsMultiLineStringV2* multiLineStringBoundary = dynamic_cast< QgsMultiLineStringV2* >( polygonBoundary ) )
{
for ( int j = 0; j < multiLineStringBoundary->numGeometries(); ++j )
{
multiLine->addGeometry( multiLineStringBoundary->geometryN( j )->clone() );
}
delete multiLineStringBoundary;
}
else
{
delete polygonBoundary;
}
}
}
if ( multiLine->numGeometries() == 0 )
{
delete multiLine;
return nullptr;
}
return multiLine;
}
QgsAbstractGeometryV2* QgsGeometryImport::fromMultiPolyline( const QgsMultiPolyline& multiline )
{
QgsMultiLineStringV2* mLine = new QgsMultiLineStringV2();
for ( int i = 0; i < multiline.size(); ++i )
{
mLine->addGeometry( fromPolyline( multiline.at( i ) ) );
}
return mLine;
}