OnEnteringPolygon* SITSituationVisitor::visitOnEnteringPolygon(ASTNode *node) {
            OnEnteringPolygon *oep = NULL;

            if (node != NULL) {
                oep = new OnEnteringPolygon();

                ASTNode *n = findByKey("OBJECTID", node->getParent(), 3);
                if (n == NULL) {
                    OPENDAVINCI_CORE_THROW_EXCEPTION(SITSituationVisitorException, "Node to get name from OBJECTID expected.");
                }
                oep->setID(n->getValue<uint32_t>());

                n = findByKey("VERTEX2", node->getParent(), 4);
                if (n == NULL) {
                    OPENDAVINCI_CORE_THROW_EXCEPTION(SITSituationVisitorException, "Node to get name from VERTEX222 expected.");
                }
                n = n->getParent()->getParent();
                vector<ASTNode*> listOfEnteringPolygon = n->getChildren();
                vector<ASTNode*>::iterator it = listOfEnteringPolygon.begin();
                while (it != listOfEnteringPolygon.end()) {
                    n = (*it++);
                    if (n->getFirstChild()->getKey() == "VERTEX2") {
                        oep->add(visitVertex3(n));
                    }
                }
            }

            return oep;
        }
        Object SITSituationVisitor::visitObject(ASTNode *node) {
            Object o;

            if (node != NULL) {
                ASTNode *n = NULL;

                n = node->getNodeFromFirstMatchingChildFor("OBJECT");
                if (n == NULL) {
                    OPENDAVINCI_CORE_THROW_EXCEPTION(SITSituationVisitorException, "Node to get value from OBJECT expected.");
                }
                o.setName(n->getValue<string>());

                n = node->getNodeFromFirstMatchingChildFor("OBJECTID");
                if (n == NULL) {
                    OPENDAVINCI_CORE_THROW_EXCEPTION(SITSituationVisitorException, "Node to get value from OBJECTID expected.");
                }
                o.setID(n->getValue<uint32_t>());

                // Parse shape from child.
                vector<ASTNode*> listOfChildren = node->getChildren("OBJECTID");
                vector<ASTNode*>::iterator it = listOfChildren.begin() + 1; // Skip first OBJECTID.
                while (it != listOfChildren.end()) {
                    ASTNode *child = (*it++)->getFirstChild();
                    if (child != NULL) {
                        if (child->getKey() == "SHAPENAME") {
                            Shape *shape = visitShape(child->getParent());
                            o.setShape(shape);
                        }
                    }
                }

                n = node->getNodeFromFirstMatchingChildFor("ROTZ");
                if (n == NULL) {
                    OPENDAVINCI_CORE_THROW_EXCEPTION(SITSituationVisitorException, "Node to get value from ROTZ expected.");
                }
                o.setRotationZ(n->getValue<double>());

                n = *(node->getChildren("ROTZ").begin() + 1); // BEHAVIOR starts directly after ROTZ.
                if (n == NULL) {
                    OPENDAVINCI_CORE_THROW_EXCEPTION(SITSituationVisitorException, "Node to get value from BEHAVIOR expected.");
                }
                o.setBehavior(visitBehavior(n));
            }

            return o;
        }