void QgsSpatiaLiteFeatureIterator::getFeatureGeometry( sqlite3_stmt* stmt, int ic, QgsFeature& feature )
{
if ( sqlite3_column_type( stmt, ic ) == SQLITE_BLOB )
{
unsigned char *featureGeom = NULL;
size_t geom_size = 0;
const void *blob = sqlite3_column_blob( stmt, ic );
size_t blob_size = sqlite3_column_bytes( stmt, ic );
QgsSpatiaLiteProvider::convertToGeosWKB(( const unsigned char * )blob, blob_size,
&featureGeom, &geom_size );
if ( featureGeom )
{
QgsGeometry *g = new QgsGeometry();
g->fromWkb( featureGeom, geom_size );
feature.setGeometry( g );
}
else
feature.setGeometry( 0 );
}
else
{
// NULL geometry
feature.setGeometry( 0 );
}
}
bool QgsOgrFeatureIterator::readFeature( OGRFeatureH fet, QgsFeature& feature )
{
feature.setFeatureId( OGR_F_GetFID( fet ) );
feature.initAttributes( mSource->mFields.count() );
feature.setFields( &mSource->mFields ); // allow name-based attribute lookups
bool useIntersect = mRequest.flags() & QgsFeatureRequest::ExactIntersect;
bool geometryTypeFilter = mSource->mOgrGeometryTypeFilter != wkbUnknown;
if ( mFetchGeometry || useIntersect || geometryTypeFilter )
{
OGRGeometryH geom = OGR_F_GetGeometryRef( fet );
if ( geom )
{
if ( mGeometrySimplifier )
mGeometrySimplifier->simplifyGeometry( geom );
// get the wkb representation
int memorySize = OGR_G_WkbSize( geom );
unsigned char *wkb = new unsigned char[memorySize];
OGR_G_ExportToWkb( geom, ( OGRwkbByteOrder ) QgsApplication::endian(), wkb );
QgsGeometry* geometry = feature.geometry();
if ( !geometry ) feature.setGeometryAndOwnership( wkb, memorySize ); else geometry->fromWkb( wkb, memorySize );
}
if (( useIntersect && ( !feature.geometry() || !feature.geometry()->intersects( mRequest.filterRect() ) ) )
|| ( geometryTypeFilter && ( !feature.geometry() || QgsOgrProvider::ogrWkbSingleFlatten(( OGRwkbGeometryType )feature.geometry()->wkbType() ) != mSource->mOgrGeometryTypeFilter ) ) )
{
OGR_F_Destroy( fet );
return false;
}
}
if ( !mFetchGeometry )
{
feature.setGeometry( 0 );
}
// fetch attributes
if ( mRequest.flags() & QgsFeatureRequest::SubsetOfAttributes )
{
const QgsAttributeList& attrs = mRequest.subsetOfAttributes();
for ( QgsAttributeList::const_iterator it = attrs.begin(); it != attrs.end(); ++it )
{
getFeatureAttribute( fet, feature, *it );
}
}
else
{
// all attributes
for ( int idx = 0; idx < mSource->mFields.count(); ++idx )
{
getFeatureAttribute( fet, feature, idx );
}
}
return true;
}
// TODO: make this a QgsGeometry member...
QgsGeometry geomFromHexWKB( const char *hexwkb )
{
int wkbsize;
unsigned char *wkb = hex2bytes( hexwkb, &wkbsize );
QgsGeometry geom;
// NOTE: QgsGeometry takes ownership of wkb
geom.fromWkb( wkb, wkbsize );
return geom;
}
//! Returns a simplified version the specified geometry (Removing duplicated points) when is applied the specified map2pixel context
QgsGeometry* QgsMapToPixelSimplifier::simplify( QgsGeometry* geometry ) const
{
QgsGeometry* g = new QgsGeometry();
size_t wkbSize = geometry->wkbSize();
unsigned char* wkb = ( unsigned char* )malloc( wkbSize );
memcpy( wkb, geometry->asWkb(), wkbSize );
g->fromWkb( wkb, wkbSize );
simplifyGeometry( g, mSimplifyFlags, mTolerance );
return g;
}
QgsGeometry* QgsGPXFeatureIterator::readWaypointGeometry( const QgsWaypoint& wpt )
{
char* geo = new char[21];
std::memset( geo, 0, 21 );
geo[0] = QgsApplication::endian();
geo[geo[0] == QgsApplication::NDR ? 1 : 4] = QGis::WKBPoint;
std::memcpy( geo + 5, &wpt.lon, sizeof( double ) );
std::memcpy( geo + 13, &wpt.lat, sizeof( double ) );
QgsGeometry *g = new QgsGeometry();
g->fromWkb(( unsigned char * )geo, 21 );
return g;
}
QgsGeometry *QgsGPXFeatureIterator::readWaypointGeometry( const QgsWaypoint &wpt )
{
int size = 1 + sizeof( int ) + 2 * sizeof( double );
unsigned char *geo = new unsigned char[size];
QgsWkbPtr wkbPtr( geo, size );
wkbPtr << ( char ) QgsApplication::endian() << QgsWkbTypes::Point << wpt.lon << wpt.lat;
QgsGeometry *g = new QgsGeometry();
g->fromWkb( geo, size );
return g;
}
QgsGeometry spatialiteBlobToQgsGeometry( const char *blob, size_t size )
{
const int header_size = SpatialiteBlobHeader::LENGTH;
const int wkb_size = static_cast< const int >( size - header_size );
char *wkb = new char[wkb_size];
uint32_t osize = 0;
copySpatialiteCollectionWkbToQgsGeometry( blob + header_size - 1, wkb, osize, /*endianness*/blob[1] );
QgsGeometry geom;
geom.fromWkb( reinterpret_cast< unsigned char * >( wkb ), wkb_size );
return geom;
}
QgsGeometry QgsOgrUtils::ogrGeometryToQgsGeometry( OGRGeometryH geom )
{
if ( !geom )
return QgsGeometry();
// get the wkb representation
int memorySize = OGR_G_WkbSize( geom );
unsigned char *wkb = new unsigned char[memorySize];
OGR_G_ExportToWkb( geom, ( OGRwkbByteOrder ) QgsApplication::endian(), wkb );
QgsGeometry g;
g.fromWkb( wkb, memorySize );
return g;
}
QgsGeometry* QgsGPXFeatureIterator::readTrackGeometry( const QgsTrack& trk )
{
// TODO: support multi line string for segments
if ( trk.segments.size() == 0 )
return 0;
// A track consists of several segments. Add all those segments into one.
int totalPoints = 0;;
for ( int i = 0; i < trk.segments.size(); i ++ )
{
totalPoints += trk.segments[i].points.size();
}
if ( totalPoints == 0 )
return 0;
//QgsDebugMsg( "GPX feature track total points: " + QString::number( totalPoints ) );
// some wkb voodoo
char* geo = new char[9 + 16 * totalPoints];
if ( !geo )
{
QgsDebugMsg( "Too large track!!!" );
return 0;
}
std::memset( geo, 0, 9 + 16 * totalPoints );
geo[0] = QgsApplication::endian();
geo[geo[0] == QgsApplication::NDR ? 1 : 4] = QGis::WKBLineString;
std::memcpy( geo + 5, &totalPoints, 4 );
int thisPoint = 0;
for ( int k = 0; k < trk.segments.size(); k++ )
{
int nPoints = trk.segments[k].points.size();
for ( int i = 0; i < nPoints; ++i )
{
std::memcpy( geo + 9 + 16 * thisPoint, &trk.segments[k].points[i].lon, sizeof( double ) );
std::memcpy( geo + 9 + 16 * thisPoint + 8, &trk.segments[k].points[i].lat, sizeof( double ) );
thisPoint++;
}
}
//create QgsGeometry and use it for intersection test
//if geometry is to be fetched, it is attached to the feature, otherwise we delete it
QgsGeometry* theGeometry = new QgsGeometry();
theGeometry->fromWkb(( unsigned char * )geo, 9 + 16 * totalPoints );
return theGeometry;
}
QgsGeometry *QgsGPXFeatureIterator::readTrackGeometry( const QgsTrack &trk )
{
// TODO: support multi line string for segments
if ( trk.segments.isEmpty() )
return nullptr;
// A track consists of several segments. Add all those segments into one.
int totalPoints = 0;
for ( int i = 0; i < trk.segments.size(); i ++ )
{
totalPoints += trk.segments[i].points.size();
}
if ( totalPoints == 0 )
return nullptr;
//QgsDebugMsg( "GPX feature track total points: " + QString::number( totalPoints ) );
// some wkb voodoo
int size = 1 + 2 * sizeof( int ) + 2 * sizeof( double ) * totalPoints;
unsigned char *geo = new unsigned char[size];
if ( !geo )
{
QgsDebugMsg( "Track too large!" );
return nullptr;
}
QgsWkbPtr wkbPtr( geo, size );
wkbPtr << ( char ) QgsApplication::endian() << QgsWkbTypes::LineString << totalPoints;
for ( int k = 0; k < trk.segments.size(); k++ )
{
int nPoints = trk.segments[k].points.size();
for ( int i = 0; i < nPoints; ++i )
{
wkbPtr << trk.segments[k].points[i].lon << trk.segments[k].points[i].lat;
}
}
//create QgsGeometry and use it for intersection test
//if geometry is to be fetched, it is attached to the feature, otherwise we delete it
QgsGeometry *g = new QgsGeometry();
g->fromWkb( geo, size );
return g;
}
void QgsWFSFeatureIterator::copyFeature( const QgsFeature* f, QgsFeature& feature, bool fetchGeometry )
{
Q_UNUSED( fetchGeometry );
if ( !f )
{
return;
}
//copy the geometry
const QgsGeometry* geometry = f->constGeometry();
if ( geometry && fetchGeometry )
{
const unsigned char *geom = geometry->asWkb();
int geomSize = geometry->wkbSize();
unsigned char* copiedGeom = new unsigned char[geomSize];
memcpy( copiedGeom, geom, geomSize );
QgsGeometry *g = new QgsGeometry();
g->fromWkb( copiedGeom, geomSize );
feature.setGeometry( g );
}
else
{
feature.setGeometry( nullptr );
}
//and the attributes
feature.initAttributes( mSource->mFields.size() );
for ( int i = 0; i < mSource->mFields.size(); i++ )
{
const QVariant &v = f->attributes().value( i );
if ( v.type() != mSource->mFields.at( i ).type() )
feature.setAttribute( i, QgsVectorDataProvider::convertValue( mSource->mFields.at( i ).type(), v.toString() ) );
else
feature.setAttribute( i, v );
}
//id and valid
feature.setValid( true );
feature.setFeatureId( f->id() );
feature.setFields( mSource->mFields ); // allow name-based attribute lookups
}
QgsGeometry *QgsGPXFeatureIterator::readRouteGeometry( const QgsRoute &rte )
{
// some wkb voodoo
int size = 1 + 2 * sizeof( int ) + 2 * sizeof( double ) * rte.points.size();
unsigned char *geo = new unsigned char[size];
QgsWkbPtr wkbPtr( geo, size );
wkbPtr << ( char ) QgsApplication::endian() << QgsWkbTypes::LineString << rte.points.size();
for ( int i = 0; i < rte.points.size(); ++i )
{
wkbPtr << rte.points[i].lon << rte.points[i].lat;
}
//create QgsGeometry and use it for intersection test
//if geometry is to be fetched, it is attached to the feature, otherwise we delete it
QgsGeometry *g = new QgsGeometry();
g->fromWkb( geo, size );
return g;
}
QgsGeometry* QgsGPXFeatureIterator::readRouteGeometry( const QgsRoute& rte )
{
// some wkb voodoo
int nPoints = rte.points.size();
char* geo = new char[9 + 16 * nPoints];
std::memset( geo, 0, 9 + 16 * nPoints );
geo[0] = QgsApplication::endian();
geo[geo[0] == QgsApplication::NDR ? 1 : 4] = QGis::WKBLineString;
std::memcpy( geo + 5, &nPoints, 4 );
for ( int i = 0; i < rte.points.size(); ++i )
{
std::memcpy( geo + 9 + 16 * i, &rte.points[i].lon, sizeof( double ) );
std::memcpy( geo + 9 + 16 * i + 8, &rte.points[i].lat, sizeof( double ) );
}
//create QgsGeometry and use it for intersection test
//if geometry is to be fetched, it is attached to the feature, otherwise we delete it
QgsGeometry* theGeometry = new QgsGeometry();
theGeometry->fromWkb(( unsigned char * )geo, 9 + 16 * nPoints );
return theGeometry;
}
bool QgsGPXProvider::nextFeature( QgsFeature& feature )
{
feature.setValid( false );
bool result = false;
QgsAttributeList::const_iterator iter;
if ( mFeatureType == WaypointType )
{
// go through the list of waypoints and return the first one that is in
// the bounds rectangle
for ( ; mWptIter != data->waypointsEnd(); ++mWptIter )
{
const QgsWaypoint* wpt;
wpt = &( *mWptIter );
if ( boundsCheck( wpt->lon, wpt->lat ) )
{
feature.setFeatureId( wpt->id );
result = true;
// some wkb voodoo
if ( mFetchGeom )
{
char* geo = new char[21];
std::memset( geo, 0, 21 );
geo[0] = QgsApplication::endian();
geo[geo[0] == QgsApplication::NDR ? 1 : 4] = QGis::WKBPoint;
std::memcpy( geo + 5, &wpt->lon, sizeof( double ) );
std::memcpy( geo + 13, &wpt->lat, sizeof( double ) );
feature.setGeometryAndOwnership(( unsigned char * )geo, sizeof( wkbPoint ) );
}
feature.setValid( true );
// add attributes if they are wanted
for ( iter = mAttributesToFetch.begin(); iter != mAttributesToFetch.end(); ++iter )
{
switch ( *iter )
{
case NameAttr:
feature.addAttribute( NameAttr, QVariant( wpt->name ) );
break;
case EleAttr:
if ( wpt->ele != -std::numeric_limits<double>::max() )
feature.addAttribute( EleAttr, QVariant( wpt->ele ) );
break;
case SymAttr:
feature.addAttribute( SymAttr, QVariant( wpt->sym ) );
break;
case CmtAttr:
feature.addAttribute( CmtAttr, QVariant( wpt->cmt ) );
break;
case DscAttr:
feature.addAttribute( DscAttr, QVariant( wpt->desc ) );
break;
case SrcAttr:
feature.addAttribute( SrcAttr, QVariant( wpt->src ) );
break;
case URLAttr:
feature.addAttribute( URLAttr, QVariant( wpt->url ) );
break;
case URLNameAttr:
feature.addAttribute( URLNameAttr, QVariant( wpt->urlname ) );
break;
}
}
++mWptIter;
break;
}
}
}
else if ( mFeatureType == RouteType )
{
// go through the routes and return the first one that is in the bounds
// rectangle
for ( ; mRteIter != data->routesEnd(); ++mRteIter )
{
const QgsRoute* rte;
rte = &( *mRteIter );
if ( rte->points.size() == 0 )
continue;
const QgsRectangle& b( *mSelectionRectangle );
if (( rte->xMax >= b.xMinimum() ) && ( rte->xMin <= b.xMaximum() ) &&
( rte->yMax >= b.yMinimum() ) && ( rte->yMin <= b.yMaximum() ) )
{
// some wkb voodoo
int nPoints = rte->points.size();
char* geo = new char[9 + 16 * nPoints];
std::memset( geo, 0, 9 + 16 * nPoints );
geo[0] = QgsApplication::endian();
geo[geo[0] == QgsApplication::NDR ? 1 : 4] = QGis::WKBLineString;
std::memcpy( geo + 5, &nPoints, 4 );
for ( uint i = 0; i < rte->points.size(); ++i )
{
std::memcpy( geo + 9 + 16 * i, &rte->points[i].lon, sizeof( double ) );
std::memcpy( geo + 9 + 16 * i + 8, &rte->points[i].lat, sizeof( double ) );
}
//create QgsGeometry and use it for intersection test
//if geometry is to be fetched, it is attached to the feature, otherwise we delete it
QgsGeometry* theGeometry = new QgsGeometry();
theGeometry->fromWkb(( unsigned char * )geo, 9 + 16 * nPoints );
bool intersection = theGeometry->intersects( b );//use geos for precise intersection test
if ( !intersection )
{
delete theGeometry;
}
else
{
if ( mFetchGeom )
{
feature.setGeometry( theGeometry );
}
else
{
delete theGeometry;
}
feature.setFeatureId( rte->id );
result = true;
feature.setValid( true );
// add attributes if they are wanted
for ( iter = mAttributesToFetch.begin(); iter != mAttributesToFetch.end(); ++iter )
{
switch ( *iter )
{
case NameAttr:
feature.addAttribute( NameAttr, QVariant( rte->name ) );
break;
case NumAttr:
if ( rte->number != std::numeric_limits<int>::max() )
feature.addAttribute( NumAttr, QVariant( rte->number ) );
break;
case CmtAttr:
feature.addAttribute( CmtAttr, QVariant( rte->cmt ) );
break;
case DscAttr:
feature.addAttribute( DscAttr, QVariant( rte->desc ) );
break;
case SrcAttr:
feature.addAttribute( SrcAttr, QVariant( rte->src ) );
break;
case URLAttr:
feature.addAttribute( URLAttr, QVariant( rte->url ) );
break;
case URLNameAttr:
feature.addAttribute( URLNameAttr, QVariant( rte->urlname ) );
break;
}
}
++mRteIter;
break;
}
//++mRteIter;
//xbreak;
}
}
}
else if ( mFeatureType == TrackType )
{
// go through the tracks and return the first one that is in the bounds
// rectangle
for ( ; mTrkIter != data->tracksEnd(); ++mTrkIter )
{
const QgsTrack* trk;
trk = &( *mTrkIter );
QgsDebugMsg( QString( "GPX feature track segments: %1" ).arg( trk->segments.size() ) );
if ( trk->segments.size() == 0 )
continue;
// A track consists of several segments. Add all those segments into one.
int totalPoints = 0;;
for ( std::vector<QgsTrackSegment>::size_type i = 0; i < trk->segments.size(); i ++ )
{
totalPoints += trk->segments[i].points.size();
}
if ( totalPoints == 0 )
continue;
QgsDebugMsg( "GPX feature track total points: " + QString::number( totalPoints ) );
const QgsRectangle& b( *mSelectionRectangle );
if (( trk->xMax >= b.xMinimum() ) && ( trk->xMin <= b.xMaximum() ) &&
( trk->yMax >= b.yMinimum() ) && ( trk->yMin <= b.yMaximum() ) )
{
// some wkb voodoo
char* geo = new char[9 + 16 * totalPoints];
if ( !geo )
{
QgsDebugMsg( "Too large track!!!" );
return false;
}
std::memset( geo, 0, 9 + 16 * totalPoints );
geo[0] = QgsApplication::endian();
geo[geo[0] == QgsApplication::NDR ? 1 : 4] = QGis::WKBLineString;
std::memcpy( geo + 5, &totalPoints, 4 );
int thisPoint = 0;
for ( std::vector<QgsTrackSegment>::size_type k = 0; k < trk->segments.size(); k++ )
{
int nPoints = trk->segments[k].points.size();
for ( int i = 0; i < nPoints; ++i )
{
std::memcpy( geo + 9 + 16 * thisPoint, &trk->segments[k].points[i].lon, sizeof( double ) );
std::memcpy( geo + 9 + 16 * thisPoint + 8, &trk->segments[k].points[i].lat, sizeof( double ) );
thisPoint++;
}
}
//create QgsGeometry and use it for intersection test
//if geometry is to be fetched, it is attached to the feature, otherwise we delete it
QgsGeometry* theGeometry = new QgsGeometry();
theGeometry->fromWkb(( unsigned char * )geo, 9 + 16 * totalPoints );
bool intersection = theGeometry->intersects( b );//use geos for precise intersection test
if ( !intersection ) //no intersection, delete geometry and move on
{
delete theGeometry;
}
else //intersection
{
if ( mFetchGeom )
{
feature.setGeometry( theGeometry );
}
else
{
delete theGeometry;
}
feature.setFeatureId( trk->id );
result = true;
feature.setValid( true );
// add attributes if they are wanted
for ( iter = mAttributesToFetch.begin(); iter != mAttributesToFetch.end(); ++iter )
{
switch ( *iter )
{
case NameAttr:
feature.addAttribute( NameAttr, QVariant( trk->name ) );
break;
case NumAttr:
if ( trk->number != std::numeric_limits<int>::max() )
feature.addAttribute( NumAttr, QVariant( trk->number ) );
break;
case CmtAttr:
feature.addAttribute( CmtAttr, QVariant( trk->cmt ) );
break;
case DscAttr:
feature.addAttribute( DscAttr, QVariant( trk->desc ) );
break;
case SrcAttr:
feature.addAttribute( SrcAttr, QVariant( trk->src ) );
break;
case URLAttr:
feature.addAttribute( URLAttr, QVariant( trk->url ) );
break;
case URLNameAttr:
feature.addAttribute( URLNameAttr, QVariant( trk->urlname ) );
break;
}
}
++mTrkIter;
break;
}
}
}
}
if ( result )
{
feature.setValid( true );
}
return result;
}
void QgsGml::endElement( const XML_Char* el )
{
QString elementName( QString::fromUtf8( el ) );
ParseMode theParseMode( mParseModeStack.isEmpty() ? none : mParseModeStack.top() );
QStringList splitName = elementName.split( NS_SEPARATOR );
QString localName = splitName.last();
QString ns = splitName.size() > 1 ? splitName.first() : "";
if (( theParseMode == coordinate && elementName == GML_NAMESPACE + NS_SEPARATOR + "coordinates" )
|| ( theParseMode == posList && (
elementName == GML_NAMESPACE + NS_SEPARATOR + "pos"
|| elementName == GML_NAMESPACE + NS_SEPARATOR + "posList" ) ) )
{
mParseModeStack.pop();
}
else if ( theParseMode == attribute && localName == mAttributeName ) //add a thematic attribute to the feature
{
mParseModeStack.pop();
setAttribute( mAttributeName, mStringCash );
}
else if ( theParseMode == geometry && localName == mGeometryAttribute )
{
mParseModeStack.pop();
}
else if ( theParseMode == boundingBox && elementName == GML_NAMESPACE + NS_SEPARATOR + "boundedBy" )
{
//create bounding box from mStringCash
if ( createBBoxFromCoordinateString( mCurrentExtent, mStringCash ) != 0 )
{
QgsDebugMsg( "creation of bounding box failed" );
}
mParseModeStack.pop();
}
else if ( theParseMode == feature && localName == mTypeName )
{
Q_ASSERT( mCurrentFeature );
if ( mCurrentWKBSize > 0 )
{
QgsGeometry *g = new QgsGeometry();
g->fromWkb( mCurrentWKB, mCurrentWKBSize );
mCurrentFeature->setGeometry( g );
mCurrentWKB = QgsWkbPtr( nullptr, 0 );
}
else if ( !mCurrentExtent.isEmpty() )
{
mCurrentFeature->setGeometry( QgsGeometry::fromRect( mCurrentExtent ) );
}
else
{
mCurrentFeature->setGeometry( nullptr );
}
mCurrentFeature->setValid( true );
mFeatures.insert( mCurrentFeature->id(), mCurrentFeature );
if ( !mCurrentFeatureId.isEmpty() )
{
mIdMap.insert( mCurrentFeature->id(), mCurrentFeatureId );
}
mCurrentFeature = nullptr;
++mFeatureCount;
mParseModeStack.pop();
}
else if ( elementName == GML_NAMESPACE + NS_SEPARATOR + "Point" )
{
QList<QgsPoint> pointList;
if ( pointsFromString( pointList, mStringCash ) != 0 )
{
//error
}
if ( pointList.isEmpty() )
return; // error
if ( theParseMode == QgsGml::geometry )
{
//directly add WKB point to the feature
if ( getPointWKB( mCurrentWKB, *( pointList.constBegin() ) ) != 0 )
{
//error
}
if ( *mWkbType != QGis::WKBMultiPoint ) //keep multitype in case of geometry type mix
{
*mWkbType = QGis::WKBPoint;
}
}
else //multipoint, add WKB as fragment
{
QgsWkbPtr wkbPtr( nullptr, 0 );
if ( getPointWKB( wkbPtr, *( pointList.constBegin() ) ) != 0 )
{
//error
}
if ( !mCurrentWKBFragments.isEmpty() )
{
mCurrentWKBFragments.last().push_back( wkbPtr );
}
else
{
QgsDebugMsg( "No wkb fragments" );
delete [] wkbPtr;
}
}
}
else if ( elementName == GML_NAMESPACE + NS_SEPARATOR + "LineString" )
{
//add WKB point to the feature
QList<QgsPoint> pointList;
if ( pointsFromString( pointList, mStringCash ) != 0 )
{
//error
}
if ( theParseMode == QgsGml::geometry )
{
if ( getLineWKB( mCurrentWKB, pointList ) != 0 )
{
//error
}
if ( *mWkbType != QGis::WKBMultiLineString )//keep multitype in case of geometry type mix
{
*mWkbType = QGis::WKBLineString;
}
}
else //multiline, add WKB as fragment
{
QgsWkbPtr wkbPtr( nullptr, 0 );
if ( getLineWKB( wkbPtr, pointList ) != 0 )
{
//error
}
if ( !mCurrentWKBFragments.isEmpty() )
{
mCurrentWKBFragments.last().push_back( wkbPtr );
}
else
{
QgsDebugMsg( "no wkb fragments" );
delete [] wkbPtr;
}
}
}
else if (( theParseMode == geometry || theParseMode == multiPolygon ) && elementName == GML_NAMESPACE + NS_SEPARATOR + "LinearRing" )
{
QList<QgsPoint> pointList;
if ( pointsFromString( pointList, mStringCash ) != 0 )
{
//error
}
QgsWkbPtr wkbPtr( nullptr, 0 );
if ( getRingWKB( wkbPtr, pointList ) != 0 )
{
//error
}
if ( !mCurrentWKBFragments.isEmpty() )
{
mCurrentWKBFragments.last().push_back( wkbPtr );
}
else
{
delete[] wkbPtr;
QgsDebugMsg( "no wkb fragments" );
}
}
else if (( theParseMode == geometry || theParseMode == multiPolygon ) && elementName == GML_NAMESPACE + NS_SEPARATOR + "Polygon" )
{
if ( *mWkbType != QGis::WKBMultiPolygon )//keep multitype in case of geometry type mix
{
*mWkbType = QGis::WKBPolygon;
}
if ( theParseMode == geometry )
{
createPolygonFromFragments();
}
}
else if ( theParseMode == multiPoint && elementName == GML_NAMESPACE + NS_SEPARATOR + "MultiPoint" )
{
*mWkbType = QGis::WKBMultiPoint;
mParseModeStack.pop();
createMultiPointFromFragments();
}
else if ( theParseMode == multiLine && elementName == GML_NAMESPACE + NS_SEPARATOR + "MultiLineString" )
{
*mWkbType = QGis::WKBMultiLineString;
mParseModeStack.pop();
createMultiLineFromFragments();
}
else if ( theParseMode == multiPolygon && elementName == GML_NAMESPACE + NS_SEPARATOR + "MultiPolygon" )
{
*mWkbType = QGis::WKBMultiPolygon;
mParseModeStack.pop();
createMultiPolygonFromFragments();
}
}
QgsGeometry QgsOgrUtils::ogrGeometryToQgsGeometry( OGRGeometryH geom )
{
if ( !geom )
return QgsGeometry();
// get the wkb representation
int memorySize = OGR_G_WkbSize( geom );
unsigned char *wkb = new unsigned char[memorySize];
OGR_G_ExportToWkb( geom, ( OGRwkbByteOrder ) QgsApplication::endian(), wkb );
// Read original geometry type
uint32_t origGeomType;
memcpy( &origGeomType, wkb + 1, sizeof( uint32_t ) );
bool hasZ = ( origGeomType >= 1000 && origGeomType < 2000 ) || ( origGeomType >= 3000 && origGeomType < 4000 );
bool hasM = ( origGeomType >= 2000 && origGeomType < 3000 ) || ( origGeomType >= 3000 && origGeomType < 4000 );
// PolyhedralSurface and TINs are not supported, map them to multipolygons...
if ( origGeomType % 1000 == 16 ) // is TIN, TINZ, TINM or TINZM
{
// TIN has the same wkb layout as a multipolygon, just need to overwrite the geom types...
int nDims = 2 + hasZ + hasM;
uint32_t newMultiType = static_cast<uint32_t>( QgsWkbTypes::zmType( QgsWkbTypes::MultiPolygon, hasZ, hasM ) );
uint32_t newSingleType = static_cast<uint32_t>( QgsWkbTypes::zmType( QgsWkbTypes::Polygon, hasZ, hasM ) );
unsigned char *wkbptr = wkb;
// Endianness
wkbptr += 1;
// Overwrite geom type
memcpy( wkbptr, &newMultiType, sizeof( uint32_t ) );
wkbptr += 4;
// Geom count
uint32_t numGeoms;
memcpy( &numGeoms, wkb + 5, sizeof( uint32_t ) );
wkbptr += 4;
// For each part, overwrite the geometry type to polygon (Z|M)
for ( uint32_t i = 0; i < numGeoms; ++i )
{
// Endianness
wkbptr += 1;
// Overwrite geom type
memcpy( wkbptr, &newSingleType, sizeof( uint32_t ) );
wkbptr += sizeof( uint32_t );
// skip coordinates
uint32_t nRings;
memcpy( &nRings, wkbptr, sizeof( uint32_t ) );
wkbptr += sizeof( uint32_t );
for ( uint32_t j = 0; j < nRings; ++j )
{
uint32_t nPoints;
memcpy( &nPoints, wkbptr, sizeof( uint32_t ) );
wkbptr += sizeof( uint32_t ) + sizeof( double ) * nDims * nPoints;
}
}
}
else if ( origGeomType % 1000 == 15 ) // PolyhedralSurface, PolyhedralSurfaceZ, PolyhedralSurfaceM or PolyhedralSurfaceZM
{
// PolyhedralSurface has the same wkb layout as a MultiPolygon, just need to overwrite the geom type...
uint32_t newType = static_cast<uint32_t>( QgsWkbTypes::zmType( QgsWkbTypes::MultiPolygon, hasZ, hasM ) );
// Overwrite geom type
memcpy( wkb + 1, &newType, sizeof( uint32_t ) );
}
QgsGeometry g;
g.fromWkb( wkb, memorySize );
return g;
}
/** Set the pointer to the feature geometry
*/
void QgsFeature::setGeometryAndOwnership( unsigned char *geom, size_t length )
{
QgsGeometry *g = new QgsGeometry();
g->fromWkb( geom, length );
setGeometry( g );
}