static void buildSnapIndex( QgsFeatureIterator &fi, QgsSpatialIndex &index, QVector<AnchorPoint> &pnts, QgsFeedback *feedback, int &count, int totalCount )
{
QgsFeature f;
int pntId = 0;
while ( fi.nextFeature( f ) )
{
if ( feedback->isCanceled() )
break;
QgsGeometry g = f.geometry();
for ( auto it = g.vertices_begin(); it != g.vertices_end(); ++it )
{
QgsPoint pt = *it;
QgsRectangle rect( pt.x(), pt.y(), pt.x(), pt.y() );
QList<QgsFeatureId> ids = index.intersects( rect );
if ( ids.isEmpty() )
{
// add to tree and to structure
index.insertFeature( pntId, pt.boundingBox() );
AnchorPoint xp;
xp.x = pt.x();
xp.y = pt.y();
xp.anchor = -1;
pnts.append( xp );
pntId++;
}
}
++count;
feedback->setProgress( 100. * count / totalCount );
}
}
