void
FeatureModelGraph::checkForGlobalStyles( const Style& style )
{
const AltitudeSymbol* alt = style.get<AltitudeSymbol>();
if ( alt )
{
if (alt->clamping() == AltitudeSymbol::CLAMP_TO_TERRAIN ||
alt->clamping() == AltitudeSymbol::CLAMP_RELATIVE_TO_TERRAIN)
{
if ( alt->technique() == AltitudeSymbol::TECHNIQUE_GPU && !_clampable )
{
_clampable = new ClampableNode( 0L );
_overlayChange = OVERLAY_INSTALL_CLAMPABLE;
}
else if ( alt->technique() == AltitudeSymbol::TECHNIQUE_DRAPE && !_drapeable )
{
_drapeable = new DrapeableNode( 0L );
_overlayChange = OVERLAY_INSTALL_DRAPEABLE;
}
}
}
if ( _clampable )
{
// if we're using extrusion, don't perform depth offsetting:
const ExtrusionSymbol* extrusion = style.get<ExtrusionSymbol>();
if ( extrusion )
{
DepthOffsetOptions d = _clampable->getDepthOffsetOptions();
d.enabled() = false;
_clampable->setDepthOffsetOptions( d );
}
// check for explicit depth offset render settings (note, this could
// override the automatic disable put in place by the presence of an
// ExtrusionSymbol above)
const RenderSymbol* render = style.get<RenderSymbol>();
if ( render && render->depthOffset().isSet() )
{
_clampable->setDepthOffsetOptions(*render->depthOffset());
}
}
else
{
const RenderSymbol* render = style.get<RenderSymbol>();
if ( render && render->depthOffset().isSet() )
{
_depthOffsetAdapter.setGraph( this );
_depthOffsetAdapter.setDepthOffsetOptions( *render->depthOffset() );
}
}
}
void
DepthOffsetAdapter::setDepthOffsetOptions(const DepthOffsetOptions& options)
{
if ( !_supported ) return;
// if "enabled" changed, reset the graph.
bool reinitGraph = ( options.enabled() != _options.enabled() );
_options = options;
if ( reinitGraph )
{
setGraph( _graph.get() );
}
updateUniforms();
_dirty = (options.automatic() == true);
}
