std::unique_ptr<QgsLineString> QgsGeometryFactory::linestringFromPolyline( const QgsPolyline &polyline )
{
QVector< double > x;
x.reserve( polyline.size() );
QVector< double > y;
y.reserve( polyline.size() );
QgsPolyline::const_iterator it = polyline.constBegin();
for ( ; it != polyline.constEnd(); ++it )
{
x << it->x();
y << it->y();
}
std::unique_ptr< QgsLineString > line( new QgsLineString( x, y ) );
return line;
}
void QgsDxfExport::writePolyline( const QgsPolyline& line, const QString& layer, const QString& lineStyleName, int color,
double width, bool polygon )
{
writeGroup( 0, "POLYLINE" );
writeGroup( 8, layer );
writeGroup( 6, lineStyleName );
writeGroup( 62, color );
writeGroup( 66, 1 );
int type = polygon ? 1 : 0;
writeGroup( 70, type );
if ( width > 0 ) //width -1: use default width
{
writeGroup( 40, width );
writeGroup( 41, width );
}
QgsPolyline::const_iterator lineIt = line.constBegin();
for ( ; lineIt != line.constEnd(); ++lineIt )
{
writeVertex( *lineIt, layer );
}
writeGroup( 0, "SEQEND" );
}
void QgsDxfExport::writePolylineAC1018( QTextStream& stream, const QgsPolyline& line, const QString& layer, const QString& lineStyleName, int color,
double width, bool polygon )
{
stream << " 0\n";
stream << "LWPOLYLINE\n";
stream << " 5\n";
stream << QString( "%1\n" ).arg( mNextHandleId++ );
stream << " 8\n";
stream << layer << "\n";
stream << "100\n";
stream << "AcDbEntity\n";
stream << "100\n";
stream << "AcDbPolyline\n";
stream << " 6\n";
stream << QString( "%1\n" ).arg( lineStyleName );
stream << " 62\n";
stream << color << "\n";
stream << " 90\n";
stream << QString( "%1\n" ).arg( line.size() );
stream << " 70\n";
int type = polygon ? 1 : 0;
stream << type << "\n";
stream << " 43\n";
stream << width << "\n";
QgsPolyline::const_iterator lineIt = line.constBegin();
for ( ; lineIt != line.constEnd(); ++lineIt )
{
writeVertexAC1018( stream, *lineIt );
}
}
int QgsVectorLayerEditUtils::addTopologicalPoints( QgsGeometry* geom )
{
if ( !L->hasGeometryType() )
return 1;
if ( !geom )
{
return 1;
}
int returnVal = 0;
QGis::WkbType wkbType = geom->wkbType();
switch ( wkbType )
{
//line
case QGis::WKBLineString25D:
case QGis::WKBLineString:
{
QgsPolyline theLine = geom->asPolyline();
QgsPolyline::const_iterator line_it = theLine.constBegin();
for ( ; line_it != theLine.constEnd(); ++line_it )
{
if ( addTopologicalPoints( *line_it ) != 0 )
{
returnVal = 2;
}
}
break;
}
//multiline
case QGis::WKBMultiLineString25D:
case QGis::WKBMultiLineString:
{
QgsMultiPolyline theMultiLine = geom->asMultiPolyline();
QgsPolyline currentPolyline;
for ( int i = 0; i < theMultiLine.size(); ++i )
{
QgsPolyline::const_iterator line_it = currentPolyline.constBegin();
for ( ; line_it != currentPolyline.constEnd(); ++line_it )
{
if ( addTopologicalPoints( *line_it ) != 0 )
{
returnVal = 2;
}
}
}
break;
}
//polygon
case QGis::WKBPolygon25D:
case QGis::WKBPolygon:
{
QgsPolygon thePolygon = geom->asPolygon();
QgsPolyline currentRing;
for ( int i = 0; i < thePolygon.size(); ++i )
{
currentRing = thePolygon.at( i );
QgsPolyline::const_iterator line_it = currentRing.constBegin();
for ( ; line_it != currentRing.constEnd(); ++line_it )
{
if ( addTopologicalPoints( *line_it ) != 0 )
{
returnVal = 2;
}
}
}
break;
}
//multipolygon
case QGis::WKBMultiPolygon25D:
case QGis::WKBMultiPolygon:
{
QgsMultiPolygon theMultiPolygon = geom->asMultiPolygon();
QgsPolygon currentPolygon;
QgsPolyline currentRing;
for ( int i = 0; i < theMultiPolygon.size(); ++i )
{
currentPolygon = theMultiPolygon.at( i );
for ( int j = 0; j < currentPolygon.size(); ++j )
{
currentRing = currentPolygon.at( j );
QgsPolyline::const_iterator line_it = currentRing.constBegin();
for ( ; line_it != currentRing.constEnd(); ++line_it )
{
if ( addTopologicalPoints( *line_it ) != 0 )
{
returnVal = 2;
}
}
}
}
break;
}
default:
break;
}
return returnVal;
}
