osg::Node* makePlaceNode(FilterContext& context,
Feature* feature,
const Style& style,
NumericExpression& priorityExpr )
{
osg::Vec3d center = feature->getGeometry()->getBounds().center();
AltitudeMode mode = ALTMODE_ABSOLUTE;
const AltitudeSymbol* alt = style.getSymbol<AltitudeSymbol>();
if (alt &&
(alt->clamping() == AltitudeSymbol::CLAMP_TO_TERRAIN || alt->clamping() == AltitudeSymbol::CLAMP_RELATIVE_TO_TERRAIN) &&
alt->technique() == AltitudeSymbol::TECHNIQUE_SCENE)
{
mode = ALTMODE_RELATIVE;
}
GeoPoint point(feature->getSRS(), center.x(), center.y(), center.z(), mode);
PlaceNode* node = new PlaceNode(0L, point, style, context.getDBOptions());
if ( !priorityExpr.empty() )
{
float val = feature->eval(priorityExpr, &context);
node->setPriority( val >= 0.0f ? val : FLT_MAX );
}
return node;
}