Method evaluate

Engine/EffectInstance.cpp:3033–3068

}

void
EffectInstance::evaluate(bool isSignificant,
                         bool refreshMetadatas)
{
    NodePtr node = getNode();

    if ( refreshMetadatas && node->isNodeCreated() ) {
        refreshMetadata_public(true);
    }

    /*
       We always have to trigger a render because this might be a tree not connected via a link to the knob who changed
       but just an expression

       if (reason == eValueChangedReasonSlaveRefresh) {
        //do not trigger a render, the master will do it already
        return;
       }*/


    double time = getCurrentTime();
    std::list<ViewerInstance* > viewers;
    node->hasViewersConnected(&viewers);
    for (std::list<ViewerInstance* >::iterator it = viewers.begin();
         it != viewers.end();
         ++it) {
        if (isSignificant) {
            (*it)->renderCurrentFrame(true);
        } else {
            (*it)->redrawViewer();
        }
    }
    if (isSignificant) {
        node->refreshPreviewsRecursivelyDownstream(time);
    }
} // evaluate

bool
EffectInstance::message(MessageTypeEnum type,