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First attempt to write AC1018
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@mhugent
mhugent committed Nov 13, 2013
1 parent 421c030 commit 09103b5
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Showing 2 changed files with 339 additions and 9 deletions.
328 changes: 321 additions & 7 deletions src/core/qgsdxfexport.cpp
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Expand Up @@ -286,7 +286,7 @@ double QgsDxfExport::mDxfColors[][3] =
{1, 1, 1} // 255
};

QgsDxfExport::QgsDxfExport(): mSymbologyScaleDenominator( 1.0 ), mSymbologyExport( NoSymbology ), mMapUnits( QGis::Meters ), mSymbolLayerCounter( 0 )
QgsDxfExport::QgsDxfExport(): mSymbologyScaleDenominator( 1.0 ), mSymbologyExport( NoSymbology ), mMapUnits( QGis::Meters ), mSymbolLayerCounter( 0 ), mNextHandleId( 10 )
{
}

Expand All @@ -308,8 +308,8 @@ int QgsDxfExport::writeToFile( QIODevice* d )
}

QTextStream outStream( d );
writeHeader( outStream );
writeTables( outStream );
writeHeaderAC1018( outStream );
writeTablesAC1018( outStream );
writeEntities( outStream );
writeEndFile( outStream );
return 0;
Expand Down Expand Up @@ -703,7 +703,7 @@ void QgsDxfExport::addFeature( const QgsFeature& fet, QTextStream& stream, const
//single line
if ( geometryType == QGis::WKBLineString || geometryType == QGis::WKBLineString25D )
{
writePolyline( stream, geom->asPolyline(), layer, lineStyleName, c, width, false );
writePolylineAC1018( stream, geom->asPolyline(), layer, lineStyleName, c, width, false );
}

//multiline
Expand All @@ -713,7 +713,7 @@ void QgsDxfExport::addFeature( const QgsFeature& fet, QTextStream& stream, const
QgsMultiPolyline::const_iterator lIt = multiLine.constBegin();
for ( ; lIt != multiLine.constEnd(); ++lIt )
{
writePolyline( stream, *lIt, layer, lineStyleName, c, width, false );
writePolylineAC1018( stream, *lIt, layer, lineStyleName, c, width, false );
}
}

Expand All @@ -724,7 +724,7 @@ void QgsDxfExport::addFeature( const QgsFeature& fet, QTextStream& stream, const
QgsPolygon::const_iterator polyIt = polygon.constBegin();
for ( ; polyIt != polygon.constEnd(); ++polyIt ) //iterate over rings
{
writePolyline( stream, *polyIt, layer, lineStyleName, c, width, true );
writePolylineAC1018( stream, *polyIt, layer, lineStyleName, c, width, true );
}
}

Expand All @@ -738,7 +738,7 @@ void QgsDxfExport::addFeature( const QgsFeature& fet, QTextStream& stream, const
QgsPolygon::const_iterator polyIt = mpIt->constBegin();
for ( ; polyIt != mpIt->constEnd(); ++polyIt )
{
writePolyline( stream, *polyIt, layer, lineStyleName, c, width, true );
writePolylineAC1018( stream, *polyIt, layer, lineStyleName, c, width, true );
}
}
}
Expand Down Expand Up @@ -1001,3 +1001,317 @@ void QgsDxfExport::writeLinestyle( QTextStream& stream, const QString& styleName
isSpace = !isSpace;
}
}

/******************************************************AC_1018 methods***************************************************************/

void QgsDxfExport::writeHeaderAC1018( QTextStream& stream )
{
stream << "999\n";
stream << "DXF created from QGIS\n";
startSection( stream );
stream << " 2\n";
stream << "HEADER\n";
//ACADVER
stream << " 9\n";
stream << "$ACADVER\n";
stream << " 1\n";
stream << "AC1018\n";

QgsRectangle ext = dxfExtent();
if ( !ext.isEmpty() )
{
//EXTMIN
stream << " 9\n";
stream << "$EXTMIN\n";
stream << " 10\n";
stream << ext.xMinimum() << "\n";
stream << " 20\n";
stream << ext.yMinimum() << "\n";
stream << " 30\n";
stream << "0\n";
//EXTMAX
stream << " 9\n";
stream << "$EXTMAX\n";
stream << " 10\n";
stream << ext.xMaximum() << "\n";
stream << " 20\n";
stream << ext.yMaximum() << "\n";
stream << " 30\n";
stream << "0\n";
}
//LTSCALE
stream << " 9\n";
stream << "$LTSCALE\n";
stream << " 40\n";
stream << "1.0\n";
//PDMODE
stream << " 9\n";
stream << "$PDMODE\n";
stream << " 70\n";
stream << "33\n";
//PDSIZE
stream << " 9\n";
stream << "$PDSIZE\n";
stream << " 40\n";
stream << "1\n";
endSection( stream );
//PSLTSCALE
stream << " 9\n";
stream << "$PSLTSCALE\n";
stream << " 70\n";
stream << "0\n";
}

void QgsDxfExport::writeTablesAC1018( QTextStream& stream )
{
startSection( stream );
stream << " 2\n";
stream << "TABLES\n";

//todo: VPORT table

//iterate through all layers and get symbol layer pointers
QList<QgsSymbolLayerV2*> slList;
if ( mSymbologyExport != NoSymbology )
{
slList = symbolLayers();
}

//LTYPE
mLineStyles.clear();
stream << " 0\n";
stream << "TABLE\n";
stream << " 2\n";
stream << "LTYPE\n";
stream << " 5\n";
stream << QString( "%1\n" ).arg( mNextHandleId++ );
stream << "100\n";
stream << "AcDbSymbolTable\n";
stream << " 70\n";
stream << QString( "%1\n" ).arg( nLineTypes( slList ) + 1 ); //number of linetypes

//add continuous style as default
stream << " 0\n";
stream << "LTYPE\n";
stream << " 5\n";
stream << QString( "%1\n" ).arg( mNextHandleId++ );
stream << "100\n";
stream << "AcDbSymbolTableRecord\n";
stream << "100\n";
stream << "AcDbLinetypeTableRecord\n";
stream << " 2\n";
stream << "CONTINUOUS\n";
stream << " 70\n";
stream << "64\n";
stream << " 3\n";
stream << "Defaultstyle\n";
stream << " 72\n";
stream << "65\n";
stream << " 73\n";
stream << "0\n";
stream << " 40\n"; //todo: add segments in group 49
stream << "0.0\n";

//add symbol layer linestyles
QList<QgsSymbolLayerV2*>::const_iterator slIt = slList.constBegin();
for ( ; slIt != slList.constEnd(); ++slIt )
{
writeSymbolLayerLinestyleAC1018( stream, *slIt );
}

stream << " 0\n";
stream << "ENDTAB\n";

//LAYER
stream << " 0\n";
stream << "TABLE\n";
stream << " 2\n";
stream << "LAYER\n";
stream << " 5\n";
stream << QString( "%1\n" ).arg( mNextHandleId++ );
stream << "100\n";
stream << "AcDbSymbolTable\n";
stream << " 70\n";
stream << mLayers.count() << "\n";
QList< QgsMapLayer* >::const_iterator layerIt = mLayers.constBegin();
for ( ; layerIt != mLayers.constEnd(); ++layerIt )
{
stream << " 0\n";
stream << "LAYER\n";
stream << "100\n";
stream << "AcDbSymbolTableRecord\n";
stream << "100\n";
stream << "AcDbLayerTableRecord\n";
stream << " 2\n";
if ( *layerIt )
{
stream << ( *layerIt )->name() << "\n";
}
stream << " 70\n"; //layer property
stream << "64\n";
stream << " 62\n"; //layer color
stream << "1\n";
stream << " 6\n"; //layer line type
stream << "CONTINUOUS\n";
}
stream << " 0\n";
stream << "ENDTAB\n";

//todo: VIEW table

//todo: UCS table

//APPID
stream << " 0\n";
stream << "TABLE\n";
stream << " 2\n";
stream << "APPID\n";
stream << " 5\n";
stream << QString( "%1\n" ).arg( mNextHandleId++ );
stream << "100\n";
stream << "AcDbSymbolTable\n";
stream << " 70\n";
stream << " 1\n";

stream << " 0\n";
stream << "APPID\n";
stream << " 5\n";
stream << QString( "%1\n" ).arg( mNextHandleId++ );
stream << "100\n";
stream << "AcDbSymbolTableRecord\n";
stream << "100\n";
stream << "AcDbRegAppTableRecord\n";
stream << " 2\n";
stream << "ACAD\n";
stream << " 70\n";
stream << " 0\n";
stream << " 0\n";
stream << "ENDTAB\n";

//todo: DIMSTYLE table

//todo: BLOCK_RECORD table

endSection( stream );
}

void QgsDxfExport::writeSymbolLayerLinestyleAC1018( QTextStream& stream, const QgsSymbolLayerV2* symbolLayer )
{
if ( !symbolLayer )
{
return;
}

//QgsSimpleLineSymbolLayer can have customDashVector() / customDashPatternUnit()
const QgsSimpleLineSymbolLayerV2* simpleLine = dynamic_cast< const QgsSimpleLineSymbolLayerV2* >( symbolLayer );
if ( simpleLine )
{
if ( simpleLine->useCustomDashPattern() )
{
++mSymbolLayerCounter;
QString name = QString( "symbolLayer%1" ).arg( mSymbolLayerCounter );
QVector<qreal> dashPattern = simpleLine->customDashVector();
writeLinestyleAC1018( stream, name, dashPattern, simpleLine->customDashPatternUnit() );
mLineStyles.insert( symbolLayer, name );
}
}
}

void QgsDxfExport::writeLinestyleAC1018( QTextStream& stream, const QString& styleName, const QVector<qreal>& pattern, QgsSymbolV2::OutputUnit u )
{
double length = 0;
QVector<qreal>::const_iterator dashIt = pattern.constBegin();
for ( ; dashIt != pattern.constEnd(); ++dashIt )
{
length += *dashIt;
}

stream << " 0\n";
stream << "LTYPE\n";
stream << " 5\n";
stream << QString( "%1\n" ).arg( mNextHandleId++ );
stream << "100\n";
stream << "AcDbSymbolTableRecord\n";
stream << "100\n";
stream << "AcDbLinetypeTableRecord\n";
stream << " 2\n";
stream << QString( "%1\n" ).arg( styleName );
stream << " 70\n";
stream << "64\n";
stream << " 3\n";
stream << "\n";
stream << " 72\n";
stream << "65\n";
stream << " 73\n";
stream << QString( "%1\n" ).arg( pattern.size() ); //number of segments
stream << " 40\n"; //total length of segments
stream << QString( "%1\n" ).arg( length );

dashIt = pattern.constBegin();
bool isSpace = false;
for ( ; dashIt != pattern.constEnd(); ++dashIt )
{
stream << " 49\n";

//map units or mm?
double segmentLength = ( isSpace ? -*dashIt : *dashIt );
segmentLength *= mapUnitScaleFactor( mSymbologyScaleDenominator, u, mMapUnits );
stream << QString( "%1\n" ).arg( segmentLength );
isSpace = !isSpace;
}
}

void QgsDxfExport::writeEntitiesAC1018( QTextStream& stream )
{
//todo...
}

void QgsDxfExport::writeEntitiesSymbolLevelsAC1018( QTextStream& stream, QgsVectorLayer* layer )
{
//todo...
}

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 );
}
}

void QgsDxfExport::writeVertexAC1018( QTextStream& stream, const QgsPoint& pt )
{
stream << " 10\n";
stream << pt.x() << "\n";
stream << " 20\n";
stream << pt.y() << "\n";
}

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