Poi(Point Of Interest) display error using tfs (osgText)

[tjdtnfksp]

Can I ask you a question about the last version of osgearth?

Use OpenSceneGraph-3.6.4 + osgearth-2.10.2.

Use TFS to develop POI (Point Of Interest) functions.

I did the tiling, too.

And using minRange and MaxRange, it appears on the map by altitude, is erased (Movements zoom in and zoom out), and when repeated, the program stops.

I can't modify the source using dll.

Did I build something wrong with osgText?

Is it because there are a lot of poi displayed at once?

Please help me.

///my code

osgEarth::Drivers::TFSFeatureOptions featureOptions;
featureOptions.url() = url;
featureOptions.format() = "json";

Style poiStyle;

TextSymbol* text = poiStyle.getOrCreateSymbol<TextSymbol>();
text->content() = StringExpression("[eng_nm]");
//text->priority() = NumericExpression("[ID]");
text->size() = 16.0f;
text->alignment() = TextSymbol::ALIGN_CENTER_CENTER;
text->fill()->color() = Color::White;
text->halo()->color() = Color::DarkGray;
text->encoding() = osgEarth::Symbology::TextSymbol::ENCODING_UTF8;
text->declutter() = false;

StyleSheet* styleSheet = new StyleSheet();
styleSheet->addStyle(poiStyle);

osgEarth::Drivers::FeatureGeomModelOptions geomOptions;
geomOptions.featureOptions() = featureOptions;
geomOptions.styles() = styleSheet;
geomOptions.enableLighting() = false;	

geomOptions.maxRange() = max;
geomOptions.minRange() = min;

FeatureModelLayer* layer = new FeatureModelLayer(geomOptions);	
mMap->addLayer(layer);

[gwaldron]

If I had to guess, I would say you encountered a thread-safety issue in the osgText library. Unfortunately I don't have a good workaround to suggest. I once thought about pre-loading all the text glyphs so they don't get created on the fly; that would probably solve the problem, but we never looked into it further.